libs/banglejs/jswrap_bangle.c

/*
 * This file is part of Espruino, a JavaScript interpreter for Microcontrollers
 *
 * Copyright (C) 2019 Gordon Williams <gw@pur3.co.uk>
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * ----------------------------------------------------------------------------
 * This file is designed to be parsed during the build process
 *
 * Contains JavaScript interface for Bangle.js (http://www.espruino.com/Bangle.js)
 * ----------------------------------------------------------------------------
 */

#include <jswrap_bangle.h>
#include "jsinteractive.h"
#include "jsdevices.h"
#include "jsnative.h"
#include "jshardware.h"
#include "jsdevices.h"
#include "jspin.h"
#include "jstimer.h"
#include "jswrap_promise.h"
#include "jswrap_date.h"
#include "jswrap_math.h"
#include "jswrap_storage.h"
#include "jswrap_array.h"
#include "jswrap_arraybuffer.h"
#include "jswrap_heatshrink.h"
#include "jswrap_espruino.h"
#include "jsflash.h"
#include "graphics.h"
#include "bitmap_font_6x8.h"
#ifndef EMULATED
#include "jswrap_bluetooth.h"
#include "app_timer.h"
#include "nrf_gpio.h"
#include "nrf_delay.h"
#include "nrf_soc.h"
#include "nrf_saadc.h"
#include "nrf5x_utils.h"

#include "bluetooth.h" // for self-test
#include "jsi2c.h" // accelerometer/etc
#endif

#include "jswrap_graphics.h"
#ifdef LCD_CONTROLLER_LPM013M126
#include "lcd_memlcd.h"
#endif
#ifdef LCD_CONTROLLER_ST7789_8BIT
#include "lcd_st7789_8bit.h"
#endif
#if defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
#include "lcd_spilcd.h"
#endif

#ifdef ACCEL_DEVICE_KX126 
#include "kx126_registers.h"
#endif

#include "stepcount.h"

#ifdef GPS_PIN_RX
#include "nmea.h"
#endif
#ifdef USE_TENSORFLOW
#include "jswrap_tensorflow.h"
#endif

/*JSON{
  "type": "class",
  "class" : "Bangle",
  "ifdef" : "BANGLEJS"
}
Class containing utility functions for the [Bangle.js Smart Watch](http://www.espruino.com/Bangle.js)
*/


/*JSON{
  "type" : "variable",
  "name" : "VIBRATE",
  "generate_full" : "VIBRATE_PIN",
  "ifdef" : "BANGLEJS",
  "return" : ["pin",""]
}
The Bangle.js's vibration motor.
*/

/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "accel",
  "params" : [["xyz","JsVar",""]],
  "ifdef" : "BANGLEJS"
}
Accelerometer data available with `{x,y,z,diff,mag}` object as a parameter.

* `x` is X axis (left-right) in `g`
* `y` is Y axis (up-down) in `g`
* `z` is Z axis (in-out) in `g`
* `diff` is difference between this and the last reading in `g`
* `mag` is the magnitude of the acceleration in `g`

You can also retrieve the most recent reading with `Bangle.getAccel()`.
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "step",
  "params" : [["up","int","The number of steps since Bangle.js was last reset"]],
  "ifdef" : "BANGLEJS"
}
Called whenever a step is detected by Bangle.js's pedometer.
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "faceUp",
  "params" : [["up","bool","`true` if face-up"]],
  "ifdef" : "BANGLEJS"
}
Has the watch been moved so that it is face-up, or not face up?
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "twist",
  "ifdef" : "BANGLEJS"
}
This event happens when the watch has been twisted around it's axis - for instance as if it was rotated so someone could look at the time.

To tweak when this happens, see the `twist*` options in `Bangle.setOptions()`
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "charging",
  "params" : [["charging","bool","`true` if charging"]],
  "ifdef" : "BANGLEJS"
}
Is the battery charging or not?
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "mag",
  "params" : [["xyz","JsVar",""]],
  "ifdef" : "BANGLEJS"
}
Magnetometer/Compass data available with `{x,y,z,dx,dy,dz,heading}` object as a parameter

* `x/y/z` raw x,y,z magnetometer readings
* `dx/dy/dz` readings based on calibration since magnetometer turned on
* `heading` in degrees based on calibrated readings (will be NaN if magnetometer hasn't been rotated around 360 degrees)

To get this event you must turn the compass on
with `Bangle.setCompassPower(1)`.

You can also retrieve the most recent reading with `Bangle.getCompass()`.
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "GPS-raw",
  "params" : [["nmea","JsVar",""]],
  "ifdef" : "BANGLEJS"
}
Raw NMEA GPS / u-blox data messages received as a string

To get this event you must turn the GPS on
with `Bangle.setGPSPower(1)`.
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "GPS",
  "params" : [["fix","JsVar","An object with fix info (see below)"]],
  "ifdef" : "BANGLEJS"
}
GPS data, as an object. Contains:

```
{ "lat": number,      // Latitude in degrees
  "lon": number,      // Longitude in degrees
  "alt": number,      // altitude in M
  "speed": number,    // Speed in kph
  "course": number,   // Course in degrees
  "time": Date,       // Current Time (or undefined if not known)
  "satellites": 7,    // Number of satellites
  "fix": 1            // NMEA Fix state - 0 is no fix
  "hdop": number,     // Horizontal Dilution of Precision
}
```

If a value such as `lat` is not known because there is no fix, it'll be `NaN`.

`hdop` is a value from the GPS receiver that gives a rough idea of accuracy
of lat/lon based on the geometry of the satellites in range. Multiply by 5 to
get a value in meters. This is just a ballpark estimation and should
not be considered remotely accurate.

To get this event you must turn the GPS on
with `Bangle.setGPSPower(1)`.
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "HRM",
  "params" : [["hrm","JsVar","An object with heart rate info (see below)"]],
  "ifdef" : "BANGLEJS"
}
Heat rate data, as an object. Contains:

```
{ "bpm": number,             // Beats per minute
  "confidence": number,      // 0-100 percentage confidence in the heart rate
  "raw": Uint8Array,         // raw samples from heart rate monitor
}
```

To get this event you must turn the heart rate monitor on
with `Bangle.setHRMPower(1)`.
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "HRM-raw",
  "params" : [["hrm","JsVar","A object containing instant readings from the heart rate sensor"]],
  "ifdef" : "BANGLEJS"
}
Called when heart rate sensor data is available - see `Bangle.setHRMPower(1)`.

`hrm` is of the form:

```
{ "raw": -1,       // raw value from sensor
  "filt": -1,      // bandpass-filtered raw value from sensor
  "bpm": 88.9,     // last BPM value measured
  "confidence": 0  // confidence in the BPM value
}
```
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "lcdPower",
  "params" : [["on","bool","`true` if screen is on"]],
  "ifdef" : "BANGLEJS"
}
Has the screen been turned on or off? Can be used to stop tasks that are no longer useful if nothing is displayed.  Also see `Bangle.isLCDOn()`
*/
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "lock",
  "params" : [["on","bool","`true` if screen is locked, `false` if it is unlocked and touchscreen/buttons will work"]],
  "ifdef" : "BANGLEJS"
}
Has the screen been locked? Also see `Bangle.isLocked()`
*/
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "tap",
  "params" : [["data","JsVar","`{dir, double, x, y, z}`"]],
  "ifdef" : "BANGLEJS"
}
If the watch is tapped, this event contains information on the way it was tapped.

`dir` reports the side of the watch that was tapped (not the direction it was tapped in).

```
{
  dir : "left/right/top/bottom/front/back",
  double : true/false // was this a double-tap?
  x : -2 .. 2, // the axis of the tap
  y : -2 .. 2, // the axis of the tap
  z : -2 .. 2 // the axis of the tap
```
 */
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "gesture",
  "params" : [["xyz","JsVar","An Int8Array of XYZXYZXYZ data"]],
  "ifdef" : "BANGLEJS"
}
Emitted when a 'gesture' (fast movement) is detected
*/
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "aiGesture",
  "params" : [["gesture","JsVar","The name of the gesture (if '.tfnames' exists, or the index. 'undefined' if not matching"],
              ["weights","JsVar","An array of floating point values output by the model"]],
  "ifdef" : "BANGLEJS"
}
Emitted when a 'gesture' (fast movement) is detected, and a Tensorflow model is in
storage in the `".tfmodel"` file.

If a `".tfnames"` file is specified as a comma-separated list of names, it will be used
to decode `gesture` from a number into a string.
*/
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "swipe",
  "params" : [["direction","int","`-1` for left, `1` for right"]],
  "ifdef" : "BANGLEJS"
}
Emitted when a swipe on the touchscreen is detected (a movement from left->right, or right->left)
*/
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "touch",
  "params" : [
    ["button","int","`1` for left, `2` for right"],
    ["xy","JsVar","Object of form `{x,y}` containing touch coordinates (if the device supports full touch)"]
  ],
  "ifdef" : "BANGLEJS"
}
Emitted when the touchscreen is pressed
*/
/*JSON{
  "type" : "event",
  "class" : "Bangle",
  "name" : "drag",
  "params" : [["event","JsVar","Object of form `{x,y,dx,dy,b}` containing touch coordinates, difference in touch coordinates, and an integer `b` containing number of touch points (currently 1 or 0)"]],
  "ifdef" : "BANGLEJS"
}
Emitted when the touchscreen is dragged or released
*/

#define ACCEL_HISTORY_LEN 50 ///< Number of samples of accelerometer history

typedef struct {
  short x,y,z;
} Vector3;

// =========================================================================
//                                            DEVICE SPECIFIC CONFIG

#ifdef BANGLEJS_Q3
#ifndef EMULATED
JshI2CInfo i2cAccel;
JshI2CInfo i2cMag;
JshI2CInfo i2cTouch;
JshI2CInfo i2cPressure;
JshI2CInfo i2cHRM;
#define ACCEL_I2C &i2cAccel
#define MAG_I2C &i2cMag
#define TOUCH_I2C &i2cTouch
#define PRESSURE_I2C &i2cPressure
#define HRM_I2C &i2cHRM
#define GPS_UART EV_SERIAL1
#define HEARTRATE 1
#endif // EMULATED

#define HOME_BTN 1
#define DEFAULT_LCD_POWER_TIMEOUT 0 // don't turn LCD off
#define DEFAULT_BACKLIGHT_TIMEOUT 3000
#define DEFAULT_LOCK_TIMEOUT 5000

#endif

#ifdef BANGLEJS_F18
#ifndef EMULATED
/// Internal I2C used for Accelerometer/Pressure
JshI2CInfo i2cInternal;
#define ACCEL_I2C &i2cInternal
#define MAG_I2C &i2cInternal
// Nordic app timer to handle backlight PWM
APP_TIMER_DEF(m_backlight_on_timer_id);
APP_TIMER_DEF(m_backlight_off_timer_id);
#define BACKLIGHT_PWM_INTERVAL 15 // in msec - 67Hz PWM
#define HEARTRATE 1
#define GPS_UART EV_SERIAL1
#endif // EMULATED

#define IOEXP_GPS 0x01
#define IOEXP_LCD_BACKLIGHT 0x20
#define IOEXP_LCD_RESET 0x40
#define IOEXP_HRM 0x80


#define HOME_BTN 3
#endif

#ifdef DTNO1_F5
/// Internal I2C used for Accelerometer/Pressure
JshI2CInfo i2cInternal;
#define ACCEL_I2C &i2cInternal
#define PRESSURE_I2C &i2cInternal
#define HOME_BTN 3
#endif

#ifdef DICKENS
JshI2CInfo i2cInternal;
#define ACCEL_I2C &i2cInternal
#define PRESSURE_I2C &i2cInternal
#define MAG_I2C &i2cInternal
#define HOME_BTN 2
#endif

#ifdef ID205
#define HOME_BTN 1
#endif
// =========================================================================

#if HOME_BTN==1
#define HOME_BTN_PININDEX    BTN1_PININDEX
#endif
#if HOME_BTN==2
#define HOME_BTN_PININDEX    BTN2_PININDEX
#endif
#if HOME_BTN==3
#define HOME_BTN_PININDEX    BTN3_PININDEX
#endif
#if HOME_BTN==4
#define HOME_BTN_PININDEX    BTN4_PININDEX
#endif
#if HOME_BTN==5
#define HOME_BTN_PININDEX    BTN5_PININDEX
#endif
// =========================================================================

#define DEFAULT_ACCEL_POLL_INTERVAL 80 // in msec - 12.5 hz to match accelerometer
#define POWER_SAVE_ACCEL_POLL_INTERVAL 800 // in msec
#define POWER_SAVE_MIN_ACCEL 2684354 // min acceleration before we exit power save... sqr(8192*0.2)
#define POWER_SAVE_TIMEOUT 60000 // 60 seconds of inactivity
#define ACCEL_POLL_INTERVAL_MAX 4000 // in msec - DEFAULT_ACCEL_POLL_INTERVAL_MAX+TIMER_MAX must be <65535
#define BTN_LOAD_TIMEOUT 1500 // in msec - how long does the button have to be pressed for before we restart
#define TIMER_MAX 60000 // 60 sec - enough to fit in uint16_t without overflow if we add ACCEL_POLL_INTERVAL
#ifndef DEFAULT_LCD_POWER_TIMEOUT
#define DEFAULT_LCD_POWER_TIMEOUT 30000 // in msec - default for lcdPowerTimeout
#endif
#ifndef DEFAULT_BACKLIGHT_TIMEOUT
#define DEFAULT_BACKLIGHT_TIMEOUT DEFAULT_LCD_POWER_TIMEOUT
#endif
#ifndef DEFAULT_LOCK_TIMEOUT
#define DEFAULT_LOCK_TIMEOUT 30000 // in msec - default for lockTimeout
#endif

#ifdef TOUCH_I2C
unsigned char touchX, touchY; ///< current touch event coordinates
unsigned char lastTouchX, lastTouchY; ///< last touch event coordinates - updated when JSBT_DRAG is fired
bool touchPts, lastTouchPts; ///< whether a fnger is currently touching or not
#endif

#ifdef PRESSURE_I2C
#ifdef PRESSURE_DEVICE_SPL06_007
#define SPL06_PRSB2 0x00       ///< Pressure/temp data start
#define SPL06_PRSCFG 0x06      ///< Pressure config
#define SPL06_TMPCFG 0x07      ///< Temperature config
#define SPL06_MEASCFG 0x08     ///< Sensor status and config
#define SPL06_CFGREG 0x09      ///< FIFO config
#define SPL06_RESET 0x0C       ///< reset
#define SPL06_COEF_START 0x10  ///< Start of calibration coefficients
#define SPL06_COEF_NUM 18	     ///< Number of calibration coefficient registers
#define SPL06_8SAMPLES 3
/// Calibration coefficients
short barometer_c0, barometer_c1, barometer_c01, barometer_c11, barometer_c20, barometer_c21, barometer_c30;
int barometer_c00, barometer_c10;
#endif
#ifdef PRESSURE_DEVICE_BMP280
int barometerDT[3]; // temp calibration
int barometerDP[9]; // pressure calibration
#endif

/// Promise when pressure is requested
JsVar *promisePressure;
double barometerPressure;
double barometerTemperature;
double barometerAltitude;
bool jswrap_banglejs_barometerPoll();
JsVar *jswrap_banglejs_getBarometerObject();
#endif

#ifdef HEARTRATE
#include "hrm.h"
#include "heartrate.h"
#endif

#ifdef GPS_PIN_RX
/// Handling data coming from UBlox GPS
typedef enum {
  UBLOX_PROTOCOL_NOT_DETECTED = 0,
  UBLOX_PROTOCOL_NMEA = 1,
  UBLOX_PROTOCOL_UBX = 2
} UBloxProtocol;
/// What protocol is the current packet??
UBloxProtocol inComingUbloxProtocol = UBLOX_PROTOCOL_NOT_DETECTED;
/// how many characters of NMEA/UBX data do we have in ubloxIn
uint16_t ubloxInLength = 0;
/// Data received from IRQ
uint8_t ubloxIn[NMEA_MAX_SIZE]; //  82 is the max for NMEA
/// UBlox UBX message expected length
uint16_t ubloxMsgPayloadEnd = 0;
/// length of data to be handled in jswrap_banglejs_idle
uint8_t ubloxMsgLength = 0;
/// GPS data to be handled in jswrap_banglejs_idle
char ubloxMsg[NMEA_MAX_SIZE];
/// GPS fix data converted from GPS
NMEAFixInfo gpsFix;
#endif

#ifndef EMULATED
/// Nordic app timer to handle call of peripheralPollHandler
APP_TIMER_DEF(m_peripheral_poll_timer_id);
#endif

/// Is I2C busy? if so we'll skip one reading in our interrupt so we don't overlap
bool i2cBusy;
/// How often should be poll for accelerometer/compass data?
volatile uint16_t pollInterval; // in ms
/// Timer used for power save (lowering the poll interval)
volatile uint16_t powerSaveTimer;

/// counter that counts up if watch has stayed face up or down
volatile uint16_t faceUpTimer;
/// Was the watch face-up? we use this when firing events
volatile bool wasFaceUp, faceUp;
/// Was the FACE_UP event sent yet?
bool faceUpSent;
/// Was the watch charging? we use this when firing events
volatile bool wasCharging;
/// time since a button/touchscreen/etc was last pressed
volatile uint16_t inactivityTimer; // in ms
/// How long has BTN1 been held down for
volatile uint16_t homeBtnTimer; // in ms
/// Is LCD power automatic? If true this is the number of ms for the timeout, if false it's 0
int lcdPowerTimeout; // in ms
/// Is LCD backlight automatic? If true this is the number of ms for the timeout, if false it's 0
int backlightTimeout; // in ms
/// Is locking automatic? If true this is the number of ms for the timeout, if false it's 0
int lockTimeout; // in ms
/// If a button was pressed to wake the LCD up, which one was it?
char lcdWakeButton;
/// If a button was pressed to wake the LCD up, when should we start accepting events for it?
JsSysTime lcdWakeButtonTime;
/// LCD Brightness - 255=full
uint8_t lcdBrightness;
#ifdef ESPR_BACKLIGHT_FADE
/// Actual LCD brightness (if we fade to a new brightness level)
uint8_t realLcdBrightness;
bool lcdFadeHandlerActive;
#endif
#ifdef MAG_I2C
// compass data
Vector3 mag, magmin, magmax;
#endif
/// accelerometer data
Vector3 acc;
/// squared accelerometer magnitude
int accMagSquared;
/// accelerometer difference since last reading
int accdiff;
/// History of accelerometer readings
int8_t accHistory[ACCEL_HISTORY_LEN*3];
/// Index in accelerometer history of the last sample
volatile uint8_t accHistoryIdx;
/// How many samples have we been recording a gesture for? If 0, we're not recoding a gesture
volatile uint8_t accGestureCount;
/// How many samples have been recorded? Used when putting data into an array
volatile uint8_t accGestureRecordedCount;
/// How many samples has the accelerometer movement been less than accelGestureEndThresh for?
volatile uint8_t accIdleCount;
/// data on how watch was tapped
unsigned char tapInfo;
/// time since watch was last twisted enough past twistThreshold
volatile uint16_t twistTimer; // in ms
// Gesture settings
/// how big a difference before we consider a gesture started?
int accelGestureStartThresh = 800*800;
/// how small a difference before we consider a gesture ended?
int accelGestureEndThresh = 2000*2000;
/// how many samples do we keep after a gesture has ended
int accelGestureInactiveCount = 4;
/// how many samples must a gesture have before we notify about it?
int accelGestureMinLength = 10;
/// How much acceleration to register a twist of the watch strap?
int twistThreshold = 800;
/// Maximum acceleration in Y to trigger a twist (low Y means watch is facing the right way up)
int twistMaxY = -800;
/// How little time (in ms) must a twist take from low->high acceleration?
int twistTimeout = 1000;

/// Current steps since reset
uint32_t stepCounter;
/// What state was the touchscreen last in
typedef enum {
  TS_NONE = 0,
  TS_LEFT = 1,
  TS_RIGHT = 2,
  TS_BOTH = 3,
  TS_SWIPED = 4
} TouchState;
TouchState touchLastState; /// What happened in the last event?
TouchState touchLastState2; /// What happened in the event before last?
TouchState touchStatus; ///< What has happened *while the current touch is in progress*

/// Promise when beep is finished
JsVar *promiseBeep;
/// Promise when buzz is finished
JsVar *promiseBuzz;
//
unsigned short beepFreq;
unsigned char buzzAmt;

typedef enum {
  JSBF_NONE,
  JSBF_WAKEON_FACEUP = 1<<0,
  JSBF_WAKEON_BTN1   = 1<<1,
  JSBF_WAKEON_BTN2   = 1<<2,
  JSBF_WAKEON_BTN3   = 1<<3,
  JSBF_WAKEON_TOUCH  = 1<<4,
  JSBF_WAKEON_TWIST  = 1<<5,
  JSBF_BEEP_VIBRATE  = 1<<6, // use vibration motor for beep
  JSBF_ENABLE_BEEP   = 1<<7,
  JSBF_ENABLE_BUZZ   = 1<<8,
  JSBF_ACCEL_LISTENER = 1<<9, ///< we have a listener for accelerometer data
  JSBF_POWER_SAVE    = 1<<10, ///< if no movement detected for a while, lower the accelerometer poll interval
  JSBF_HRM_ON        = 1<<11,
  JSBF_GPS_ON        = 1<<12,
  JSBF_COMPASS_ON    = 1<<13,
  JSBF_BAROMETER_ON  = 1<<14,
  JSBF_LCD_ON        = 1<<15,
  JSBF_LCD_BL_ON     = 1<<16,
  JSBF_LOCKED        = 1<<17,
  JSBF_HRM_INSTANT_LISTENER = 1<<18,

  JSBF_DEFAULT =
      JSBF_WAKEON_TWIST|
      JSBF_WAKEON_BTN1|JSBF_WAKEON_BTN2|JSBF_WAKEON_BTN3
} JsBangleFlags;
volatile JsBangleFlags bangleFlags = JSBF_NONE;


typedef enum {
  JSBT_NONE,
  JSBT_RESET = 1<<0, ///< reset the watch and reload code from flash
  JSBT_LCD_ON = 1<<1, ///< LCD controller (can turn this on without the backlight)
  JSBT_LCD_OFF = 1<<2,
  JSBT_LCD_BL_ON = 1<<3, ///< LCD backlight
  JSBT_LCD_BL_OFF = 1<<4,
  JSBT_LOCK = 1<<5, ///< watch is locked
  JSBT_UNLOCK = 1<<6, ///< watch is unlocked
  JSBT_ACCEL_DATA = 1<<7, ///< need to push xyz data to JS
  JSBT_ACCEL_TAPPED = 1<<8, ///< tap event detected
#ifdef GPS_PIN_RX
  JSBT_GPS_DATA = 1<<9, ///< we got a complete set of GPS data in 'gpsFix'
  JSBT_GPS_DATA_LINE = 1<<10, ///< we got a line of GPS data
  JSBT_GPS_DATA_PARTIAL = 1<<11, ///< we got some GPS data but it needs storing for later because it was too big to go in our buffer
  JSBT_GPS_DATA_OVERFLOW = 1<<12, ///< we got more GPS data than we could handle and had to drop some
#endif
#ifdef PRESSURE_I2C
  JSBT_PRESSURE_DATA = 1<<13,
#endif
  JSBT_MAG_DATA = 1<<14, ///< need to push magnetometer data to JS
  JSBT_GESTURE_DATA = 1<<15, ///< we have data from a gesture
  JSBT_HRM_DATA = 1<<16, ///< Heart rate data is ready for analysis
  JSBT_CHARGE_EVENT = 1<<17, ///< we need to fire a charging event
  JSBT_STEP_EVENT = 1<<18, ///< we've detected a step via the pedometer
  JSBT_SWIPE_LEFT = 1<<19, ///< swiped left over touchscreen
  JSBT_SWIPE_RIGHT = 1<<20, ///< swiped right over touchscreen
  JSBT_SWIPE_UP = 1<<21, ///< swiped left over touchscreen (Bangle 2 only)
  JSBT_SWIPE_DOWN = 1<<22, ///< swiped right over touchscreen (Bangle 2 only)
  JSBT_SWIPE_MASK = JSBT_SWIPE_LEFT | JSBT_SWIPE_RIGHT | JSBT_SWIPE_UP | JSBT_SWIPE_DOWN,
  JSBT_TOUCH_LEFT = 1<<23, ///< touch lhs of touchscreen
  JSBT_TOUCH_RIGHT = 1<<24, ///< touch rhs of touchscreen
  JSBT_TOUCH_MASK = JSBT_TOUCH_LEFT | JSBT_TOUCH_RIGHT,
#ifdef TOUCH_I2C
  JSBT_DRAG = 1<<25,
#endif
  JSBT_TWIST_EVENT = 1<<26, ///< Watch was twisted
  JSBT_FACE_UP = 1<<27, ///< Watch was turned face up/down (faceUp holds the actual state)
  JSBT_ACCEL_INTERVAL_DEFAULT = 1<<28, ///< reschedule accelerometer poll handler to default speed
  JSBT_ACCEL_INTERVAL_POWERSAVE = 1<<29, ///< reschedule accelerometer poll handler to powersave speed
  JSBT_HRM_INSTANT_DATA = 1<<30, ///< Instant heart rate data
} JsBangleTasks;
JsBangleTasks bangleTasks;

static void jswrap_banglejs_setLCDPowerBacklight(bool isOn);

void jswrap_banglejs_pwrGPS(bool on) {
  if (on) bangleFlags |= JSBF_GPS_ON;
  else bangleFlags &= ~JSBF_GPS_ON;
#ifdef BANGLEJS_F18
  jswrap_banglejs_ioWr(IOEXP_GPS, on);
#endif
#ifdef GPS_PIN_EN
  jshPinOutput(GPS_PIN_EN, on);
#endif
}

void jswrap_banglejs_pwrHRM(bool on) {
#ifdef HEARTRATE
  if (on) bangleFlags |= JSBF_HRM_ON;
  else bangleFlags &= ~JSBF_HRM_ON;
#endif
#ifdef BANGLEJS_F18
  jswrap_banglejs_ioWr(IOEXP_HRM, !on);
#endif
#ifdef HEARTRATE_PIN_EN
  jshPinOutput(HEARTRATE_PIN_EN, on);
#endif
}

void jswrap_banglejs_pwrBacklight(bool on) {
#ifdef BANGLEJS_F18
  jswrap_banglejs_ioWr(IOEXP_LCD_BACKLIGHT, !on);
#endif
#ifdef LCD_BL
  jshPinOutput(LCD_BL, on);
#endif
#ifdef LCD_CONTROLLER_LPM013M126
  lcdMemLCD_extcominBacklight(on);
#endif

}

/// Flip buffer contents with the screen.
void lcd_flip(JsVar *parent, bool all) {
#ifdef LCD_WIDTH
  JsVar *graphics = jsvObjectGetChild(execInfo.hiddenRoot, JS_GRAPHICS_VAR, 0);
  if (!graphics) return;
  JsGraphics gfx;
  if (!graphicsGetFromVar(&gfx, graphics)) {
    jsvUnLock(graphics);
    return;
  }

  if (all) {
    gfx.data.modMinX = 0;
    gfx.data.modMinY = 0;
    gfx.data.modMaxX = LCD_WIDTH-1;
    gfx.data.modMaxY = LCD_HEIGHT-1;
  }

#ifdef LCD_CONTROLLER_LPM013M126
  lcdMemLCD_flip(&gfx);
#endif
#ifdef LCD_CONTROLLER_ST7789_8BIT
  lcdST7789_flip(&gfx);
#endif
#if defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
  lcdFlip_SPILCD(&gfx);
#endif
  graphicsSetVar(&gfx);
  jsvUnLock(graphics);
#endif
}

static char clipi8(int x) {
  if (x<-128) return -128;
  if (x>127) return 127;
  return (char)x;
}

static int twosComplement(int val, unsigned char bits) {
  if (val & ((unsigned int)1 << (bits - 1)))
    val -= (unsigned int)1 << bits;
  return val;
}

/** This is called to set whether an app requests a device to be on or off.
 * The value returned is whether the device should be on.
 * Devices: GPS/Compass/HRM/Barom
 */
#define SETDEVICEPOWER_FORCE (execInfo.root)
bool setDeviceRequested(const char *deviceName, JsVar *appID, bool powerOn) {
  if (appID==SETDEVICEPOWER_FORCE) {
    // force the device power to what we asked for
    return powerOn;
  }

  JsVar *bangle = jsvObjectGetChild(execInfo.root, "Bangle", 0);
  if (!bangle) return false;
  JsVar *uses = jsvObjectGetChild(bangle, "_PWR", JSV_OBJECT);
  if (!uses) {
    jsvUnLock(bangle);
    return false;
  }
  bool isOn = false;
  JsVar *device = jsvObjectGetChild(uses, deviceName, JSV_ARRAY);
  if (device) {
    if (appID) appID = jsvAsString(appID);
    else appID = jsvNewFromString("?");

    JsVar *idx = jsvGetIndexOf(device, appID, false);
    if (powerOn) {
      if (!idx) jsvArrayPush(device, appID);
    } else {
      if (idx) jsvRemoveChild(device, idx);
    }
    jsvUnLock2(appID, idx);
    isOn = jsvGetArrayLength(device)>0;
    // free memory by remove the device from the list if not used
    if (!isOn)
      jsvObjectRemoveChild(uses, deviceName);
  }
  jsvUnLock3(device, uses, bangle);
  return isOn;
}
// Check whether a specific device has been requested to be on or not
bool getDeviceRequested(const char *deviceName) {
  JsVar *bangle = jsvObjectGetChild(execInfo.root, "Bangle", 0);
  if (!bangle) return false;
  JsVar *uses = jsvObjectGetChild(bangle, "_PWR", JSV_OBJECT);
  if (!uses) {
    jsvUnLock(bangle);
    return false;
  }
  bool isOn = false;
  JsVar *device = jsvObjectGetChild(uses, deviceName, JSV_ARRAY);
  if (device)
    isOn = jsvGetArrayLength(device)>0;
  jsvUnLock3(device, uses, bangle);
  return isOn;
}

void jswrap_banglejs_setPollInterval_internal(uint16_t msec) {
  pollInterval = (uint16_t)msec;
#ifndef EMULATED
  app_timer_stop(m_peripheral_poll_timer_id);
  #if NRF_SD_BLE_API_VERSION<5
  app_timer_start(m_peripheral_poll_timer_id, APP_TIMER_TICKS(pollInterval, APP_TIMER_PRESCALER), NULL);
  #else
  app_timer_start(m_peripheral_poll_timer_id, APP_TIMER_TICKS(pollInterval), NULL);
  #endif
#endif
}

#ifndef EMULATED
/* Scan peripherals for any data that's needed
 * Also, holding down both buttons will reboot */
void peripheralPollHandler() {
  //jswrap_banglejs_pwrHRM(true);  // debug using HRM LED
  // Handle watchdog
  if (!(jshPinGetValue(BTN1_PININDEX)
#ifdef BTN2_PININDEX
       && jshPinGetValue(BTN2_PININDEX)
#endif
       ))
    jshKickWatchDog();
  // power on display if a button is pressed
  if (inactivityTimer < TIMER_MAX)
    inactivityTimer += pollInterval;
  // If button is held down, trigger a soft reset so we go back to the clock
  if (jshPinGetValue(HOME_BTN_PININDEX)) {
    if (homeBtnTimer < TIMER_MAX) {
      homeBtnTimer += pollInterval;
      if (homeBtnTimer >= BTN_LOAD_TIMEOUT) {
        bangleTasks |= JSBT_RESET;
        jshHadEvent();
        homeBtnTimer = TIMER_MAX;
        // Allow home button to break out of debugger
        if (jsiStatus & JSIS_IN_DEBUGGER) {
          jsiStatus |= JSIS_EXIT_DEBUGGER;
          execInfo.execute |= EXEC_INTERRUPTED;
        }
        // execInfo.execute |= EXEC_CTRL_C|EXEC_CTRL_C_WAIT; // set CTRLC
      }
    }
  } else {
    homeBtnTimer = 0;
  }

#ifdef LCD_CONTROLLER_LPM013M126
  // toggle EXTCOMIN to avoid burn-in on LCD
  if (bangleFlags & JSBF_LCD_ON)
    lcdMemLCD_extcominToggle();
#endif

  if (lcdPowerTimeout && (bangleFlags&JSBF_LCD_ON) && inactivityTimer>=lcdPowerTimeout) {
    // 10 seconds of inactivity, turn off display
    bangleTasks |= JSBT_LCD_OFF;
    jshHadEvent();
  }
  if (backlightTimeout && (bangleFlags&JSBF_LCD_BL_ON) && inactivityTimer>=backlightTimeout) {
    // 10 seconds of inactivity, turn off display
    bangleTasks |= JSBT_LCD_BL_OFF;
    jshHadEvent();
  }
  if (lockTimeout && !(bangleFlags&JSBF_LOCKED) && inactivityTimer>=lockTimeout) {
    // 10 seconds of inactivity, lock display
    bangleTasks |= JSBT_LOCK;
    jshHadEvent();
  }


  // check charge status
  bool isCharging = jswrap_banglejs_isCharging();
  if (isCharging != wasCharging) {
    wasCharging = isCharging;
    bangleTasks |= JSBT_CHARGE_EVENT;
    jshHadEvent();
  }
  if (i2cBusy) return;
  i2cBusy = true;
  unsigned char buf[7];
  // check the magnetometer if we had it on
  if (bangleFlags & JSBF_COMPASS_ON) {
    bool newReading = false;
#ifdef MAG_DEVICE_GMC303
    buf[0]=0x10;
    jsi2cWrite(MAG_I2C, MAG_ADDR, 1, buf, false);
    jsi2cRead(MAG_I2C, MAG_ADDR, 7, buf, true);
    if (buf[0]&1) { // then we have data
      mag.y = buf[1] | (buf[2]<<8);
      mag.x = buf[3] | (buf[4]<<8);
      mag.z = buf[5] | (buf[6]<<8);
      newReading = true;
    }
#endif
#ifdef MAG_DEVICE_UNKNOWN_0C
    buf[0]=0x4E;
    jsi2cWrite(MAG_I2C, MAG_ADDR, 1, buf, false);
    jsi2cRead(MAG_I2C, MAG_ADDR, 7, buf, true);
    if (!(buf[0]&16)) { // then we have data that wasn't read before
      // &2 seems always set
      // &16 seems set if we read twice
      // &32 might be reading in progress
      mag.y = buf[2] | (buf[1]<<8);
      mag.x = buf[4] | (buf[3]<<8);
      mag.z = buf[5] | (buf[5]<<8);
      // Now read 0x3E which should kick off a new reading
      buf[0]=0x3E;
      jsi2cWrite(MAG_I2C, MAG_ADDR, 1, buf, false);
      jsi2cRead(MAG_I2C, MAG_ADDR, 1, buf, true);
      newReading = true;
    }
#endif
    if (newReading) {
      if (mag.x<magmin.x) magmin.x=mag.x;
      if (mag.y<magmin.y) magmin.y=mag.y;
      if (mag.z<magmin.z) magmin.z=mag.z;
      if (mag.x>magmax.x) magmax.x=mag.x;
      if (mag.y>magmax.y) magmax.y=mag.y;
      if (mag.z>magmax.z) magmax.z=mag.z;
      bangleTasks |= JSBT_MAG_DATA;
      jshHadEvent();
    }
  }
#ifdef ACCEL_I2C
#ifdef ACCEL_DEVICE_KX023
  // poll KX023 accelerometer (no other way as IRQ line seems disconnected!)
  // read interrupt source data
  buf[0]=0x12; // INS1
  jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
  jsi2cRead(ACCEL_I2C, ACCEL_ADDR, 2, buf, true);
  // 0 -> 0x12 INS1 - tap event
  // 1 -> 0x13 INS2 - what kind of event
  bool hasAccelData = (buf[1]&16)!=0; // DRDY
  int tapType = (buf[1]>>2)&3; // TDTS0/1
  if (tapType) {
    tapInfo = buf[0] | (tapType<<6);
  }
  if (tapType) {
    bool handled = false;
    // wake on tap, for front (for Bangle.js 2)
#ifdef BANGLEJS_Q3
    if ((bangleFlags&JSBF_WAKEON_TOUCH) && (tapInfo&2)) {
      if (!(bangleFlags&JSBF_LCD_ON)) {
        bangleTasks |= JSBT_LCD_ON;
        handled = true;
      }
      if (bangleFlags&JSBF_LOCKED) {
        bangleTasks |= JSBT_UNLOCK;
        handled = true;
      }
    }
#endif
    // report tap
    if (handled)
      bangleTasks |= JSBT_ACCEL_TAPPED;
    jshHadEvent();
    // clear the IRQ flags
    buf[0]=0x17;
    jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
    jsi2cRead(ACCEL_I2C, ACCEL_ADDR, 1, buf, true);
  }
#endif
#ifdef ACCEL_DEVICE_KXTJ3_1057
  // read interrupt source data
  buf[0]=0x16; // INT_SOURCE1
  jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
  jsi2cRead(ACCEL_I2C, ACCEL_ADDR, 1, buf, true);
  bool hasAccelData = (buf[0]&16)!=0; // DRDY
#endif
#ifdef ACCEL_DEVICE_KX126
  // read interrupt source data (INS1 and INS2 registers)
  buf[0]=KX126_INS1; 
  jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
  jsi2cRead(ACCEL_I2C, ACCEL_ADDR, 2, buf, true);
  // 0 -> INS1 - step counter & tap events
  // 1 -> INS2 - what kind of event
  bool hasAccelData = (buf[1] & KX126_INS2_DRDY)!=0; // Is new data ready?
  int tapType = (buf[1]>>2)&3; // TDTS0/1
  if (tapType) {
    // report tap
    tapInfo = buf[0] | (tapType<<6);
    bangleTasks |= JSBT_ACCEL_TAPPED;
    jshHadEvent();
  }
  // clear the IRQ flags
  buf[0]=KX126_INT_REL;
  jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
  jsi2cRead(ACCEL_I2C, ACCEL_ADDR, 1, buf, true);
#endif
  if (hasAccelData) {
#ifdef ACCEL_DEVICE_KX126
    buf[0]=KX126_XOUT_L;
    jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
#else
    buf[0]=6;
    jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
#endif
    jsi2cRead(ACCEL_I2C, ACCEL_ADDR, 6, buf, true);
    // work out current reading in 16 bit
    short newx = (buf[1]<<8)|buf[0];
    short newy = (buf[3]<<8)|buf[2];
    short newz = (buf[5]<<8)|buf[4];
#ifdef BANGLEJS_Q3
    newx = -newx; //consistent directions with Bangle
    newz = -newz; 
#endif
#ifdef ACCEL_DEVICE_KX126
    newy = -newy;
#endif
    int dx = newx-acc.x;
    int dy = newy-acc.y;
    int dz = newz-acc.z;
    acc.x = newx;
    acc.y = newy;
    acc.z = newz;
    accMagSquared = acc.x*acc.x + acc.y*acc.y + acc.z*acc.z;
    accdiff = dx*dx + dy*dy + dz*dz;
    // save history
    accHistoryIdx = (accHistoryIdx+3) % sizeof(accHistory);
    accHistory[accHistoryIdx  ] = clipi8(newx>>7);
    accHistory[accHistoryIdx+1] = clipi8(newy>>7);
    accHistory[accHistoryIdx+2] = clipi8(newz>>7);
    // Power saving
    if (bangleFlags & JSBF_POWER_SAVE) {
      if (accdiff > POWER_SAVE_MIN_ACCEL) {
        powerSaveTimer = 0;
        if (pollInterval == POWER_SAVE_ACCEL_POLL_INTERVAL) {
          bangleTasks |= JSBT_ACCEL_INTERVAL_DEFAULT;
          jshHadEvent();
        }
      } else {
        if (powerSaveTimer < TIMER_MAX)
          powerSaveTimer += pollInterval;
        if (powerSaveTimer >= POWER_SAVE_TIMEOUT && // stationary for POWER_SAVE_TIMEOUT
            pollInterval == DEFAULT_ACCEL_POLL_INTERVAL && // we are in high power mode
            !(bangleFlags & JSBF_ACCEL_LISTENER) && // nothing was listening to accelerometer data
#ifdef PRESSURE_I2C
            !(bangleFlags & JSBF_BAROMETER_ON) && // barometer isn't on (streaming uses peripheralPollHandler)
#endif
#ifdef MAG_I2C
            !(bangleFlags & JSBF_COMPASS_ON) && // compass isn't on (streaming uses peripheralPollHandler)
#endif
            true) {
          bangleTasks |= JSBT_ACCEL_INTERVAL_POWERSAVE;
          jshHadEvent();
        }
      }
    }
    // trigger accelerometer data task if needed
    if (bangleFlags & JSBF_ACCEL_LISTENER) {
      bangleTasks |= JSBT_ACCEL_DATA;
      jshHadEvent();
    }
    // check for 'face up'
    faceUp = (acc.z<-6700) && (acc.z>-9000) && abs(acc.x)<2048 && abs(acc.y)<2048;
    if (faceUp!=wasFaceUp) {
      faceUpTimer = 0;
      faceUpSent = false;
      wasFaceUp = faceUp;
    }
    if (faceUpTimer<TIMER_MAX) faceUpTimer += pollInterval;
    if (faceUpTimer>=300 && !faceUpSent) {
      faceUpSent = true;
      bangleTasks |= JSBT_FACE_UP;
      jshHadEvent();
    }
    // Step counter
    if (bangleTasks & JSBT_ACCEL_INTERVAL_DEFAULT) {
      // we've come out of powersave, reset the algorithm
      stepcount_init();
    }
    if (powerSaveTimer < POWER_SAVE_TIMEOUT) {
      // only do step counting if power save is off (otherwise accel interval is too low - also wastes power)
      int newSteps = stepcount_new(accMagSquared);
      if (newSteps>0) {
        stepCounter += newSteps;
        bangleTasks |= JSBT_STEP_EVENT;
        jshHadEvent();
      }
    }
    // check for twist action
    if (twistTimer < TIMER_MAX)
      twistTimer += pollInterval;
    int tdy = dy;
    int tthresh = twistThreshold;
    if (tthresh<0) {
      tthresh = -tthresh;
      tdy = -tdy;
    }
    if (tdy>tthresh) twistTimer=0;
    if (tdy<-tthresh && twistTimer<twistTimeout && acc.y<twistMaxY) {
      twistTimer = TIMER_MAX; // ensure we don't trigger again until tdy>tthresh
      bangleTasks |= JSBT_TWIST_EVENT;
      jshHadEvent();
      if (bangleFlags&JSBF_WAKEON_TWIST) {
        inactivityTimer = 0;
        if (!(bangleFlags&JSBF_LCD_ON))
          bangleTasks |= JSBT_LCD_ON;
        if (bangleFlags&JSBF_LOCKED)
          bangleTasks |= JSBT_UNLOCK;
      }
    }

    // checking for gestures
    if (accGestureCount==0) { // no gesture yet
      // if movement is eniugh, start one
      if (accdiff > accelGestureStartThresh) {
        accIdleCount = 0;
        accGestureCount = 1;
      }
    } else { // we're recording a gesture
      // keep incrementing gesture size
      if (accGestureCount < 255)
        accGestureCount++;
      // if idle for long enough...
      if (accdiff < accelGestureEndThresh) {
        if (accIdleCount<255) accIdleCount++;
        if (accIdleCount==accelGestureInactiveCount) {
          // inactive for long enough for a gesture, but not too long
          accGestureRecordedCount = accGestureCount;
          if ((accGestureCount >= accelGestureMinLength) &&
              (accGestureCount < ACCEL_HISTORY_LEN)) {
            bangleTasks |= JSBT_GESTURE_DATA; // trigger a gesture task
            jshHadEvent();
          }
          accGestureCount = 0; // stop the gesture
        }
      } else if (accIdleCount < accelGestureInactiveCount)
        accIdleCount = 0; // it was inactive but not long enough to trigger a gesture
    }
  }

#endif
#ifdef PRESSURE_I2C
  if (bangleFlags & JSBF_BAROMETER_ON) {
    if (jswrap_banglejs_barometerPoll()) {
      bangleTasks |= JSBT_PRESSURE_DATA;
      jshHadEvent();
    }
  }
#endif

  i2cBusy = false;
  //jswrap_banglejs_pwrHRM(false); // debug using HRM LED
}

#ifdef HEARTRATE
static void hrmHandler(int ppgValue) {
  if (hrm_new(ppgValue)) {
    bangleTasks |= JSBT_HRM_DATA;
    jshHadEvent();
  }
  if (bangleFlags & JSBF_HRM_INSTANT_LISTENER) {
    bangleTasks |= JSBT_HRM_INSTANT_DATA;
    jshHadEvent();
  }
}
#endif // HEARTRATE

#ifdef BANGLEJS_F18
void backlightOnHandler() {
  if (i2cBusy) return;
  jswrap_banglejs_pwrBacklight(true); // backlight on
  app_timer_start(m_backlight_off_timer_id, APP_TIMER_TICKS(BACKLIGHT_PWM_INTERVAL, APP_TIMER_PRESCALER) * lcdBrightness >> 8, NULL);
}
void backlightOffHandler() {
  if (i2cBusy) return;
  jswrap_banglejs_pwrBacklight(false); // backlight off
}
#endif // BANGLEJS_F18
#endif // !EMULATED

void btnHandlerCommon(int button, bool state, IOEventFlags flags) {
  // wake up IF LCD power or Lock has a timeout (so will turn off automatically)
  if (lcdPowerTimeout || backlightTimeout || lockTimeout) {
    if (((bangleFlags&JSBF_WAKEON_BTN1)&&(button==1)) ||
        ((bangleFlags&JSBF_WAKEON_BTN2)&&(button==2)) ||
        ((bangleFlags&JSBF_WAKEON_BTN3)&&(button==3)) ||
#ifdef DICKENS
        ((bangleFlags&JSBF_WAKEON_BTN3)&&(button==4)) ||
#endif
        false){
      // if a 'hard' button, turn LCD on
      inactivityTimer = 0;
      if (state) {
        bool ignoreBtnUp = false;
        if (lcdPowerTimeout && !(bangleFlags&JSBF_LCD_ON) && state) {
          bangleTasks |= JSBT_LCD_ON;
          ignoreBtnUp = true;
        }
        if (backlightTimeout && !(bangleFlags&JSBF_LCD_BL_ON) && state) {
          bangleTasks |= JSBT_LCD_BL_ON;
          ignoreBtnUp = true;
        }
        if (lockTimeout && (bangleFlags&JSBF_LOCKED) && state) {
          bangleTasks |= JSBT_UNLOCK;
          ignoreBtnUp = true;
        }
        if (ignoreBtnUp) {
          // This allows us to ignore subsequent button
          // rising or 'bounce' events
          lcdWakeButton = button;
          lcdWakeButtonTime = jshGetSystemTime() + jshGetTimeFromMilliseconds(100);
          return; // don't push button event if the LCD is off
        }
      }
    } else {
      // on touchscreen, keep LCD on if it was in previously
      if (bangleFlags&JSBF_LCD_ON)
        inactivityTimer = 0;
      else // else don't push the event
        return;
    }
  }
  // Handle case where pressing 'home' button repeatedly at just the wrong times
  // could cause us to go home!
  if (button == HOME_BTN) homeBtnTimer = 0;
  /* This stops the button 'up' or bounces from being
   propagated if the button was used to wake the LCD up */
  JsSysTime t = jshGetSystemTime();
  if (button == lcdWakeButton) {
    if ((t < lcdWakeButtonTime) || !state) {
      /* If it's a rising edge *or* it's within our debounce
       * period, reset the debounce timer and ignore it */
      lcdWakeButtonTime = t + jshGetTimeFromMilliseconds(100);
      return;
    } else {
      /* if the next event is a 'down', > 100ms after the last event, we propogate it
       and subsequent events */
      lcdWakeButton = 0;
      lcdWakeButtonTime = 0;
    }
  }
  // if not locked, add to the event queue for normal processing for watches
  if (!(bangleFlags&JSBF_LOCKED))
    jshPushIOEvent(flags | (state?EV_EXTI_IS_HIGH:0), t);
}

#if defined(BANGLEJS_F18)
// returns true if handled and shouldn't create a normal watch event
bool btnTouchHandler() {
  if (bangleFlags&JSBF_WAKEON_TOUCH) {
    inactivityTimer = 0; // ensure LCD doesn't sleep if we're touching it
    bool eventUsed = false;
    if (!(bangleFlags&JSBF_LCD_ON)) {
      bangleTasks |= JSBT_LCD_ON;
      eventUsed = true; // eat the event
    }
    if (bangleFlags&JSBF_LOCKED) {
      bangleTasks |= JSBT_UNLOCK;
      eventUsed = true;
    }
    if (eventUsed) return true; // eat the event
  }
  // if locked, ignore touch/swipe
  if (bangleFlags&JSBF_LOCKED) {
    touchLastState = touchLastState2 = touchStatus = TS_NONE;
    return false;
  }
  // Detect touch/swipe
  TouchState state =
      (jshPinGetValue(BTN4_PININDEX)?TS_LEFT:0) |
      (jshPinGetValue(BTN5_PININDEX)?TS_RIGHT:0);
  touchStatus |= state;
  if ((touchLastState2==TS_RIGHT && touchLastState==TS_BOTH && state==TS_LEFT) ||
      (touchLastState==TS_RIGHT && state==1)) {
    touchStatus |= TS_SWIPED;
    bangleTasks |= JSBT_SWIPE_LEFT;
  }
  if ((touchLastState2==TS_LEFT && touchLastState==TS_BOTH && state==TS_RIGHT) ||
      (touchLastState==TS_LEFT && state==TS_RIGHT)) {
    touchStatus |= TS_SWIPED;
    bangleTasks |= JSBT_SWIPE_RIGHT;
  }
  if (!state) {
    if (touchLastState && !(touchStatus&TS_SWIPED)) {
      if (touchStatus&TS_LEFT) bangleTasks |= JSBT_TOUCH_LEFT;
      if (touchStatus&TS_RIGHT) bangleTasks |= JSBT_TOUCH_RIGHT;
    }
    touchStatus = TS_NONE;
  }
  touchLastState2 = touchLastState;
  touchLastState = state;
  return false;
}
#endif
void btn1Handler(bool state, IOEventFlags flags) {
  btnHandlerCommon(1,state,flags);
}
#ifdef BTN2_PININDEX
void btn2Handler(bool state, IOEventFlags flags) {
  btnHandlerCommon(2,state,flags);
}
#endif
#ifdef BTN3_PININDEX
void btn3Handler(bool state, IOEventFlags flags) {
  btnHandlerCommon(3,state,flags);
}
#endif
#if defined(BANGLEJS_F18) || defined(EMSCRIPTEN)
void btn4Handler(bool state, IOEventFlags flags) {
  if (btnTouchHandler()) return;
  btnHandlerCommon(4,state,flags);
}
void btn5Handler(bool state, IOEventFlags flags) {
  if (btnTouchHandler()) return;
  btnHandlerCommon(5,state,flags);
}
#else
void btn4Handler(bool state, IOEventFlags flags) {
  btnHandlerCommon(4,state,flags);
}
#endif

#ifdef TOUCH_I2C
void touchHandler(bool state, IOEventFlags flags) {
  if (state) return; // only interested in when low
  // Ok, now get touch info
  unsigned char buf[6];
  buf[0]=1;
  jsi2cWrite(TOUCH_I2C, TOUCH_ADDR, 1, buf, false);
  jsi2cRead(TOUCH_I2C, TOUCH_ADDR, 6, buf, true);

  // ignore if locked
  if (bangleFlags & JSBF_LOCKED) return;

  // 0: Gesture type
  // 1: touch pts (0 or 1)
  // 2: Status / X hi (0x00 first, 0x80 pressed, 0x40 released)
  // 3: X lo (0..160)
  // 4: Y hi
  // 5: Y lo (0..160)
  touchX = buf[3] * LCD_WIDTH / 160;
  touchY = buf[5] * LCD_HEIGHT / 160;
  touchPts = buf[1];
  int gesture = buf[0];
  static int lastGesture = 0;
  if (gesture!=lastGesture) {
    switch (gesture) { // gesture
    case 0:break; // no gesture
    case 1: // slide down
        bangleTasks |= JSBT_SWIPE_DOWN;
        break;
    case 2: // slide up
        bangleTasks |= JSBT_SWIPE_UP;
        break;
    case 3: // slide left
        bangleTasks |= JSBT_SWIPE_LEFT;
        break;
    case 4: // slide right
        bangleTasks |= JSBT_SWIPE_RIGHT;
        break;
    case 5: // single click
      if (touchX<80) bangleTasks |= JSBT_TOUCH_LEFT;
      else bangleTasks |= JSBT_TOUCH_RIGHT;
      break;
    }
    // 0x0B double touch
    // 0x0C long touch
  }

  if (touchPts!=lastTouchPts || lastTouchX!=touchX || lastTouchY!=touchY) {
    bangleTasks |= JSBT_DRAG;
    // ensure we don't sleep if touchscreen is being used
    inactivityTimer = 0;
  }

  lastGesture = gesture;
}
#endif

static void jswrap_banglejs_setLCDPowerController(bool isOn) {
#ifdef LCD_CONTROLLER_LPM013M126
  jshPinOutput(LCD_EXTCOMIN, 0);
  jshPinOutput(LCD_DISP, isOn); // enable
#endif
#ifdef LCD_CONTROLLER_ST7789_8BIT
  if (isOn) { // wake
    lcdST7789_cmd(0x11, 0, NULL); // SLPOUT
    jshDelayMicroseconds(20);
    lcdST7789_cmd(0x29, 0, NULL); // DISPON
  } else { // sleep
    lcdST7789_cmd(0x28, 0, NULL); // DISPOFF
    jshDelayMicroseconds(20);
    lcdST7789_cmd(0x10, 0, NULL); // SLPIN
  }
#endif
#if defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
  // TODO: LCD_CONTROLLER_GC9A01 - has an enable/power pin
  if (isOn) { // wake
    lcdCmd_SPILCD(0x11, 0, NULL); // SLPOUT
    jshDelayMicroseconds(20);
    lcdCmd_SPILCD(0x29, 0, NULL); // DISPON
  } else { // sleep
    lcdCmd_SPILCD(0x28, 0, NULL); // DISPOFF
    jshDelayMicroseconds(20);
    lcdCmd_SPILCD(0x10, 0, NULL); // SLPIN
  }
#endif
#ifdef LCD_EN
  jshPinOutput(LCD_EN,isOn); // enable off
#endif
}

#ifdef ESPR_BACKLIGHT_FADE
static void backlightFadeHandler() {
  int target = (bangleFlags&JSBF_LCD_ON) ? lcdBrightness : 0;
  int brightness = realLcdBrightness;
  int step = brightness>>3; // to make this more linear
  if (step<4) step=4;
  if (target > brightness) {
    brightness += step;
    if (brightness > target)
      brightness = target;
  } else if (target < brightness) {
    brightness -= step;
    if (brightness < target)
      brightness = target;
  }
  realLcdBrightness = brightness;
  if (brightness==0) jswrap_banglejs_pwrBacklight(0);
  else if (realLcdBrightness==255) jswrap_banglejs_pwrBacklight(1);
  else {
    jshPinAnalogOutput(LCD_BL, realLcdBrightness/256.0, 200, JSAOF_NONE);
  }
}
#endif

/// Turn just the backlight on or off (or adjust brightness)
static void jswrap_banglejs_setLCDPowerBacklight(bool isOn) {
  if (isOn) bangleFlags |= JSBF_LCD_BL_ON;
  else bangleFlags &= ~JSBF_LCD_BL_ON;
#ifndef EMULATED
#ifdef BANGLEJS_F18
  app_timer_stop(m_backlight_on_timer_id);
  app_timer_stop(m_backlight_off_timer_id);
  if (isOn) { // wake
    if (lcdBrightness > 0) {
      if (lcdBrightness < 255) { //  only do PWM if brightness isn't full
        app_timer_start(m_backlight_on_timer_id, APP_TIMER_TICKS(BACKLIGHT_PWM_INTERVAL, APP_TIMER_PRESCALER), NULL);
      } else // full brightness
        jswrap_banglejs_pwrBacklight(true); // backlight on
    } else { // lcdBrightness == 0
      jswrap_banglejs_pwrBacklight(false); // backlight off
    }
  } else { // sleep
    jswrap_banglejs_pwrBacklight(false); // backlight off
  }
#elif defined(ESPR_BACKLIGHT_FADE)
  if (!lcdFadeHandlerActive) {
    JsSysTime t = jshGetTimeFromMilliseconds(10);
    jstExecuteFn(backlightFadeHandler, NULL, jshGetSystemTime()+t, t);
    lcdFadeHandlerActive = true;
    backlightFadeHandler();
  }
#else
  jswrap_banglejs_pwrBacklight(isOn && (lcdBrightness>0));
#ifdef LCD_BL
  if (isOn && lcdBrightness > 0 && lcdBrightness < 255) {
    jshPinAnalogOutput(LCD_BL, lcdBrightness/256.0, 200, JSAOF_NONE);
  }
#endif // LCD_BL
#endif
#endif // !EMULATED
}


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setLCDPower",
    "generate" : "jswrap_banglejs_setLCDPower",
    "params" : [
      ["isOn","bool","True if the LCD should be on, false if not"]
    ],
    "ifdef" : "BANGLEJS"
}
This function can be used to turn Bangle.js's LCD off or on.

**When on full, the LCD draws roughly 40mA.** You can adjust
When brightness using `Bange.setLCDBrightness`.
*/
void jswrap_banglejs_setLCDPower(bool isOn) {
#ifdef ESPR_BACKLIGHT_FADE
  if (isOn) jswrap_banglejs_setLCDPowerController(1);
  else jswrap_banglejs_setLCDPowerBacklight(0); // RB: don't turn on the backlight here if fading is enabled
  jswrap_banglejs_setLCDPowerBacklight(isOn);
#else
  jswrap_banglejs_setLCDPowerController(isOn);
  jswrap_banglejs_setLCDPowerBacklight(isOn);
#endif
  if ((bangleFlags&JSBF_LCD_ON) != isOn) {
    JsVar *bangle =jsvObjectGetChild(execInfo.root, "Bangle", 0);
    if (bangle) {
      JsVar *v = jsvNewFromBool(isOn);
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"lcdPower", &v, 1);
      jsvUnLock(v);
    }
    jsvUnLock(bangle);
  }
  inactivityTimer = 0;
  if (isOn) bangleFlags |= JSBF_LCD_ON;
  else bangleFlags &= ~JSBF_LCD_ON;
}


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setLCDBrightness",
    "generate" : "jswrap_banglejs_setLCDBrightness",
    "params" : [
      ["brightness","float","The brightness of Bangle.js's display - from 0(off) to 1(on full)"]
    ],
    "ifdef" : "BANGLEJS"
}
This function can be used to adjust the brightness of Bangle.js's display, and
hence prolong its battery life.

Due to hardware design constraints, software PWM has to be used which
means that the display may flicker slightly when Bluetooth is active
and the display is not at full power.

**Power consumption**

* 0 = 7mA
* 0.1 = 12mA
* 0.2 = 18mA
* 0.5 = 28mA
* 0.9 = 40mA (switching overhead)
* 1 = 40mA
*/
void jswrap_banglejs_setLCDBrightness(JsVarFloat v) {
  int b = (int)(v*256 + 0.5);
  if (b<0) b=0;
  if (b>255) b=255;
  lcdBrightness = b;
  if (bangleFlags&JSBF_LCD_ON)  // need to re-run to adjust brightness
    jswrap_banglejs_setLCDPowerBacklight(1);
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setLCDMode",
    "generate" : "jswrap_banglejs_setLCDMode",
    "params" : [
      ["mode","JsVar","The LCD mode (See below)"]
    ],
    "ifdef" : "BANGLEJS"
}
This function can be used to change the way graphics is handled on Bangle.js.

Available options for `Bangle.setLCDMode` are:

* `Bangle.setLCDMode()` or `Bangle.setLCDMode("direct")` (the default) - The drawable area is 240x240 16 bit. Unbuffered, so draw calls take effect immediately. Terminal and vertical scrolling work (horizontal scrolling doesn't).
* `Bangle.setLCDMode("doublebuffered")` - The drawable area is 240x160 16 bit, terminal and scrolling will not work. `g.flip()` must be called for draw operations to take effect.
* `Bangle.setLCDMode("120x120")` - The drawable area is 120x120 8 bit, `g.getPixel`, terminal, and full scrolling work. Uses an offscreen buffer stored on Bangle.js, `g.flip()` must be called for draw operations to take effect.
* `Bangle.setLCDMode("80x80")` - The drawable area is 80x80 8 bit, `g.getPixel`, terminal, and full scrolling work. Uses an offscreen buffer stored on Bangle.js, `g.flip()` must be called for draw operations to take effect.

You can also call `Bangle.setLCDMode()` to return to normal, unbuffered `"direct"` mode.
*/
void jswrap_banglejs_setLCDMode(JsVar *mode) {
#ifdef LCD_CONTROLLER_ST7789_8BIT
  LCDST7789Mode lcdMode = LCDST7789_MODE_UNBUFFERED;
  if (jsvIsUndefined(mode) || jsvIsStringEqual(mode,"direct"))
    lcdMode = LCDST7789_MODE_UNBUFFERED;
  else if (jsvIsStringEqual(mode,"null"))
    lcdMode = LCDST7789_MODE_NULL;
  else if (jsvIsStringEqual(mode,"doublebuffered"))
    lcdMode = LCDST7789_MODE_DOUBLEBUFFERED;
  else if (jsvIsStringEqual(mode,"120x120"))
    lcdMode = LCDST7789_MODE_BUFFER_120x120;
  else if (jsvIsStringEqual(mode,"80x80"))
    lcdMode = LCDST7789_MODE_BUFFER_80x80;
  else
    jsExceptionHere(JSET_ERROR,"Unknown LCD Mode %j",mode);

  JsVar *graphics = jsvObjectGetChild(execInfo.hiddenRoot, JS_GRAPHICS_VAR, 0);
  if (!graphics) return;
  jswrap_graphics_setFont(graphics, NULL, 1); // reset fonts - this will free any memory associated with a custom font
  JsGraphics gfx;
  if (!graphicsGetFromVar(&gfx, graphics)) return;
  // remove the buffer if it was defined
  jsvObjectSetOrRemoveChild(gfx.graphicsVar, "buffer", 0);
  unsigned int bufferSize = 0;
  switch (lcdMode) {
    case LCDST7789_MODE_NULL:
    case LCDST7789_MODE_UNBUFFERED:
      gfx.data.width = LCD_WIDTH;
      gfx.data.height = LCD_HEIGHT;
      gfx.data.bpp = 16;
      break;
    case LCDST7789_MODE_DOUBLEBUFFERED:
      gfx.data.width = LCD_WIDTH;
      gfx.data.height = 160;
      gfx.data.bpp = 16;
      break;
    case LCDST7789_MODE_BUFFER_120x120:
      gfx.data.width = 120;
      gfx.data.height = 120;
      gfx.data.bpp = 8;
      bufferSize = 120*120;
      break;
    case LCDST7789_MODE_BUFFER_80x80:
      gfx.data.width = 80;
      gfx.data.height = 80;
      gfx.data.bpp = 8;
      bufferSize = 80*80;
      break;
  }
  if (bufferSize) {
    jsvGarbageCollect();
    jsvDefragment();
    JsVar *arrData = jsvNewFlatStringOfLength(bufferSize);
    if (arrData) {
      jsvObjectSetChildAndUnLock(gfx.graphicsVar, "buffer", jsvNewArrayBufferFromString(arrData, (unsigned int)bufferSize));
    } else {
      jsExceptionHere(JSET_ERROR, "Not enough memory to allocate offscreen buffer");
      jswrap_banglejs_setLCDMode(0); // go back to default mode
      return;
    }
    jsvUnLock(arrData);
  }
  graphicsStructResetState(&gfx); // reset colour, cliprect, etc
  graphicsSetVar(&gfx);
  jsvUnLock(graphics);
  lcdST7789_setMode( lcdMode );
#else
  jsExceptionHere(JSET_ERROR, "setLCDMode is unsupported on this device");
#endif
}
/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getLCDMode",
    "generate" : "jswrap_banglejs_getLCDMode",
    "return" : ["JsVar","The LCD mode as a String"],
    "ifdef" : "BANGLEJS"
}
The current LCD mode.

See `Bangle.setLCDMode` for examples.
*/
JsVar *jswrap_banglejs_getLCDMode() {
  const char *name=0;
#ifdef LCD_CONTROLLER_ST7789_8BIT
  switch (lcdST7789_getMode()) {
    case LCDST7789_MODE_NULL:
      name = "null";
      break;
    case LCDST7789_MODE_UNBUFFERED:
      name = "direct";
      break;
    case LCDST7789_MODE_DOUBLEBUFFERED:
      name = "doublebuffered";
      break;
    case LCDST7789_MODE_BUFFER_120x120:
      name = "120x120";
      break;
    case LCDST7789_MODE_BUFFER_80x80:
      name = "80x80";
      break;
  }
#endif
  if (!name) return 0;
  return jsvNewFromString(name);
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setLCDOffset",
    "generate" : "jswrap_banglejs_setLCDOffset",
    "params" : [
      ["y","int","The amount of pixels to shift the LCD up or down"]
    ],
    "ifdef" : "BANGLEJS"
}
This can be used to move the displayed memory area up or down temporarily. It's
used for displaying notifications while keeping the main display contents
intact.
*/
void jswrap_banglejs_setLCDOffset(int y) {
#ifdef LCD_CONTROLLER_LPM013M126
#endif
#ifdef LCD_CONTROLLER_ST7789_8BIT
  lcdST7789_setYOffset(y);
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setLCDTimeout",
    "generate" : "jswrap_banglejs_setLCDTimeout",
    "params" : [
      ["isOn","float","The timeout of the display in seconds, or `0`/`undefined` to turn power saving off. Default is 10 seconds."]
    ],
    "ifdef" : "BANGLEJS"
}
This function can be used to turn Bangle.js's LCD power saving on or off.

With power saving off, the display will remain in the state you set it with `Bangle.setLCDPower`.

With power saving on, the display will turn on if a button is pressed, the watch is turned face up, or the screen is updated (see `Bangle.setOptions` for configuration). It'll turn off automatically after the given timeout.

**Note:** This function also sets the Backlight and Lock timeout (the time at which the touchscreen/buttons start being ignored). To set both separately, use `Bangle.setOptions`
*/
void jswrap_banglejs_setLCDTimeout(JsVarFloat timeout) {
  if (!isfinite(timeout))
    timeout=0;
  else if (timeout<0) timeout=0;
#ifndef BANGLEJS_Q3 // for backwards compatibility, don't set LCD timeout as we don't want to turn the LCD off
  lcdPowerTimeout = timeout*1000;
#endif
  backlightTimeout = timeout*1000;
  lockTimeout = timeout*1000;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setPollInterval",
    "generate" : "jswrap_banglejs_setPollInterval",
    "params" : [
      ["interval","float","Polling interval in milliseconds (Default is 80ms - 12.5Hz to match accelerometer)"]
    ],
    "ifdef" : "BANGLEJS"
}
Set how often the watch should poll for new acceleration/gyro data and kick the Watchdog timer. It isn't
recommended that you make this interval much larger than 1000ms, but values up to 4000ms are allowed.

Calling this will set `Bangle.setOptions({powerSave: false})` - disabling the dynamic adjustment of
poll interval to save battery power when Bangle.js is stationary.
*/
void jswrap_banglejs_setPollInterval(JsVarFloat interval) {
  if (!isfinite(interval) || interval<10 || interval>ACCEL_POLL_INTERVAL_MAX) {
    jsExceptionHere(JSET_ERROR, "Invalid interval");
    return;
  }
  bangleFlags &= ~JSBF_POWER_SAVE; // turn off power save since it'll just overwrite the poll interval
  jswrap_banglejs_setPollInterval_internal((uint16_t)interval);
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setOptions",
    "generate" : "jswrap_banglejs_setOptions",
    "params" : [
      ["options","JsVar",""]
    ],
    "ifdef" : "BANGLEJS"
}
Set internal options used for gestures, etc...

* `wakeOnBTN1` should the LCD turn on when BTN1 is pressed? default = `true`
* `wakeOnBTN2` should the LCD turn on when BTN2 is pressed? default = `true`
* `wakeOnBTN3` should the LCD turn on when BTN3 is pressed? default = `true`
* `wakeOnFaceUp` should the LCD turn on when the watch is turned face up? default = `false`
* `wakeOnTouch` should the LCD turn on when the touchscreen is pressed? default = `false`
* `wakeOnTwist` should the LCD turn on when the watch is twisted? default = `true`
* `twistThreshold`  How much acceleration to register a twist of the watch strap? Can be negative for oppsite direction. default = `800`
* `twistMaxY` Maximum acceleration in Y to trigger a twist (low Y means watch is facing the right way up). default = `-800`
* `twistTimeout`  How little time (in ms) must a twist take from low->high acceleration? default = `1000`
* `gestureStartThresh` how big a difference before we consider a gesture started? default = `sqr(800)`
* `gestureEndThresh` how small a difference before we consider a gesture ended? default = `sqr(2000)`
* `gestureInactiveCount` how many samples do we keep after a gesture has ended? default = `4`
* `gestureMinLength` how many samples must a gesture have before we notify about it? default = `10`
* `powerSave` after a minute of not being moved, Bangle.js will change the accelerometer poll interval down to 800ms (10x accelerometer samples).
   On movement it'll be raised to the default 80ms. If `Bangle.setPollInterval` is used this is disabled, and for it to work the poll interval
   must be either 80ms or 800ms. default = `true`
* `lockTimeout` how many milliseconds before the screen locks
* `lcdPowerTimeout` how many milliseconds before the screen turns off
* `backlightTimeout` how many milliseconds before the screen's backlight turns off

Where accelerations are used they are in internal units, where `8192 = 1g`

*/
JsVar * _jswrap_banglejs_setOptions(JsVar *options, bool createObject) {
  bool wakeOnBTN1 = bangleFlags&JSBF_WAKEON_BTN1;
  bool wakeOnBTN2 = bangleFlags&JSBF_WAKEON_BTN2;
  bool wakeOnBTN3 = bangleFlags&JSBF_WAKEON_BTN3;
  bool wakeOnFaceUp = bangleFlags&JSBF_WAKEON_FACEUP;
  bool wakeOnTouch = bangleFlags&JSBF_WAKEON_TOUCH;
  bool wakeOnTwist = bangleFlags&JSBF_WAKEON_TWIST;
  bool powerSave = bangleFlags&JSBF_POWER_SAVE;
  int stepCounterThresholdLow, stepCounterThresholdHigh; // ignore these with new step counter
  jsvConfigObject configs[] = {
      {"gestureStartThresh", JSV_INTEGER, &accelGestureStartThresh},
      {"gestureEndThresh", JSV_INTEGER, &accelGestureEndThresh},
      {"gestureInactiveCount", JSV_INTEGER, &accelGestureInactiveCount},
      {"gestureMinLength", JSV_INTEGER, &accelGestureMinLength},
      {"stepCounterThresholdLow", JSV_INTEGER, &stepCounterThresholdLow},
      {"stepCounterThresholdHigh", JSV_INTEGER, &stepCounterThresholdHigh},
      {"twistThreshold", JSV_INTEGER, &twistThreshold},
      {"twistTimeout", JSV_INTEGER, &twistTimeout},
      {"twistMaxY", JSV_INTEGER, &twistMaxY},
      {"wakeOnBTN1", JSV_BOOLEAN, &wakeOnBTN1},
      {"wakeOnBTN2", JSV_BOOLEAN, &wakeOnBTN2},
      {"wakeOnBTN3", JSV_BOOLEAN, &wakeOnBTN3},
      {"wakeOnFaceUp", JSV_BOOLEAN, &wakeOnFaceUp},
      {"wakeOnTouch", JSV_BOOLEAN, &wakeOnTouch},
      {"wakeOnTwist", JSV_BOOLEAN, &wakeOnTwist},
      {"powerSave", JSV_BOOLEAN, &powerSave},
      {"lockTimeout", JSV_INTEGER, &lockTimeout},
      {"lcdPowerTimeout", JSV_INTEGER, &lcdPowerTimeout},
      {"backlightTimeout", JSV_INTEGER, &backlightTimeout}
  };
  if (createObject) {
    return jsvCreateConfigObject(configs, sizeof(configs) / sizeof(jsvConfigObject));
  }
  if (jsvReadConfigObject(options, configs, sizeof(configs) / sizeof(jsvConfigObject))) {
    bangleFlags = (bangleFlags&~JSBF_WAKEON_BTN1) | (wakeOnBTN1?JSBF_WAKEON_BTN1:0);
    bangleFlags = (bangleFlags&~JSBF_WAKEON_BTN2) | (wakeOnBTN2?JSBF_WAKEON_BTN2:0);
    bangleFlags = (bangleFlags&~JSBF_WAKEON_BTN3) | (wakeOnBTN3?JSBF_WAKEON_BTN3:0);
    bangleFlags = (bangleFlags&~JSBF_WAKEON_FACEUP) | (wakeOnFaceUp?JSBF_WAKEON_FACEUP:0);
    bangleFlags = (bangleFlags&~JSBF_WAKEON_TOUCH) | (wakeOnTouch?JSBF_WAKEON_TOUCH:0);
    bangleFlags = (bangleFlags&~JSBF_WAKEON_TWIST) | (wakeOnTwist?JSBF_WAKEON_TWIST:0);
    bangleFlags = (bangleFlags&~JSBF_POWER_SAVE) | (powerSave?JSBF_POWER_SAVE:0);
    if (lockTimeout<0) lockTimeout=0;
    if (lcdPowerTimeout<0) lcdPowerTimeout=0;
    if (backlightTimeout<0) backlightTimeout=0;
  }
  return 0;
}
void jswrap_banglejs_setOptions(JsVar *options) {
  _jswrap_banglejs_setOptions(options, false);
}
/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getOptions",
    "generate" : "jswrap_banglejs_getOptions",
    "return" : ["JsVar","The current state of all options"],
    "ifdef" : "BANGLEJS"
}
Return the current state of options as set by `Bangle.getOptions`
*/
JsVar *jswrap_banglejs_getOptions() {
  return _jswrap_banglejs_setOptions(NULL, true);
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isLCDOn",
    "generate" : "jswrap_banglejs_isLCDOn",
    "return" : ["bool","Is the display on or not?"],
    "ifdef" : "BANGLEJS"
}
Also see the `Bangle.lcdPower` event
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isLCDOn() {
  return (bangleFlags&JSBF_LCD_ON)!=0;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setLocked",
    "generate" : "jswrap_banglejs_setLocked",
    "params" : [
      ["isLocked","bool","`true` if the Bangle is locked (no user input allowed)"]
    ],
    "ifdef" : "BANGLEJS"
}
This function can be used to lock or unlock Bangle.js
(eg whether buttons and touchscreen work or not)
*/
void jswrap_banglejs_setLocked(bool isLocked) {
#if defined(TOUCH_I2C)
  if (isLocked) {
    unsigned char buf[2];
    buf[0]=0xE5;
    buf[1]=0x03;
    jsi2cWrite(TOUCH_I2C, TOUCH_ADDR, 2, buf, true);
  } else { // best way to wake up is to reset
    jshPinOutput(TOUCH_PIN_RST, 0);
    jshDelayMicroseconds(1000);
    jshPinOutput(TOUCH_PIN_RST, 1);
    jshDelayMicroseconds(1000);
  }
#endif
  if ((bangleFlags&JSBF_LOCKED) != isLocked) {
    JsVar *bangle =jsvObjectGetChild(execInfo.root, "Bangle", 0);
    if (bangle) {
      JsVar *v = jsvNewFromBool(isLocked);
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"lock", &v, 1);
      jsvUnLock(v);
    }
    jsvUnLock(bangle);
  }
  if (isLocked) bangleFlags |= JSBF_LOCKED;
  else bangleFlags &= ~JSBF_LOCKED;
  // Reset inactivity timer so we will lock ourselves after a delay
  inactivityTimer = 0;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isLocked",
    "generate" : "jswrap_banglejs_isLocked",
    "return" : ["bool","Is the screen locked or not?"],
    "ifdef" : "BANGLEJS"
}
Also see the `Bangle.lock` event
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isLocked() {
  return (bangleFlags&JSBF_LOCKED)!=0;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isCharging",
    "generate" : "jswrap_banglejs_isCharging",
    "return" : ["bool","Is the battery charging or not?"],
    "ifdef" : "BANGLEJS"
}
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isCharging() {
#ifdef BAT_PIN_CHARGING
  return !jshPinGetValue(BAT_PIN_CHARGING);
#else
  return 0;
#endif
}

/// get battery percentage
JsVarInt jswrap_banglejs_getBattery() {
#ifdef BAT_PIN_VOLTAGE
  JsVarFloat v = jshPinAnalog(BAT_PIN_VOLTAGE);
#ifdef BANGLEJS_Q3
  const JsVarFloat vlo = 0.246;
  const JsVarFloat vhi = 0.32;
#elif defined(BANGLEJS_F18)
  const JsVarFloat vlo = 0.51;
  const JsVarFloat vhi = 0.62;
#elif defined(DICKENS)
#ifdef LCD_TEARING  // DICKENS2 hardware (with LCD tearing signal) has VDD=3.3V
  const JsVarFloat vlo = 3.55 / (3.3*2);  // Operates down to 3.05V, but battery starts dropping very rapidly from 3.55V, so treat this as the end-point.
  const JsVarFloat vhi = 4.15 / (3.3*2);  // Fully charged is 4.20V, but drops quickly to 4.15V
#else               // Original DICKENS hardware has VDD=2.8V
  const JsVarFloat vlo = 3.55 / (2.8*2);
  const JsVarFloat vhi = 4.15 / (2.8*2);
#endif
#else
  const JsVarFloat vlo = 0;
  const JsVarFloat vhi = 1;
#endif
  int pc = (v-vlo)*100/(vhi-vlo);
  if (pc>100) pc=100;
  if (pc<0) pc=0;
  return pc;
#else
  return 50;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "lcdWr",
    "generate" : "jswrap_banglejs_lcdWr",
    "params" : [
      ["cmd","int",""],
      ["data","JsVar",""]
    ],
    "ifdef" : "BANGLEJS"
}
Writes a command directly to the ST7735 LCD controller
*/
void jswrap_banglejs_lcdWr(JsVarInt cmd, JsVar *data) {
  JSV_GET_AS_CHAR_ARRAY(dPtr, dLen, data);
#ifdef LCD_CONTROLLER_ST7789_8BIT
  lcdST7789_cmd(cmd, dLen, (const uint8_t *)dPtr);
#endif
#if defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
  lcdCmd_SPILCD(cmd, dLen, (const uint8_t *)dPtr);
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setHRMPower",
    "generate" : "jswrap_banglejs_setHRMPower",
    "params" : [
      ["isOn","bool","True if the heart rate monitor should be on, false if not"],
      ["appID","JsVar","A string with the app's name in, used to ensure one app can't turn off something another app is using"]
    ],
    "return" : ["bool","Is HRM on?"],
    "ifdef" : "BANGLEJS"
}
Set the power to the Heart rate monitor

When on, data is output via the `HRM` event on `Bangle`:

```
Bangle.setHRMPower(true, "myapp");
Bangle.on('HRM',print);
```

*When on, the Heart rate monitor draws roughly 5mA*
*/
bool jswrap_banglejs_setHRMPower(bool isOn, JsVar *appId) {
#ifdef HEARTRATE
  bool wasOn = bangleFlags & JSBF_HRM_ON;
  isOn = setDeviceRequested("HRM", appId, isOn);

  if (isOn != wasOn) {
    if (isOn) {
      hrm_init();
      jswrap_banglejs_pwrHRM(true); // HRM on, set JSBF_HRM_ON
      hrm_sensor_on(hrmHandler);
    } else {
      hrm_sensor_off();
      jswrap_banglejs_pwrHRM(false); // HRM off
    }
  }
  return isOn;
#else
  return false;
#endif
}
/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isHRMOn",
    "generate" : "jswrap_banglejs_isHRMOn",
    "return" : ["bool","Is HRM on?"],
    "ifdef" : "BANGLEJS"
}
Is the Heart rate monitor powered?

Set power with `Bangle.setHRMPower(...);`
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isHRMOn() {
  return bangleFlags & JSBF_HRM_ON;
}

#ifdef GPS_PIN_RX
void resetUbloxIn() {
  ubloxInLength = 0;
  ubloxMsgPayloadEnd = 0;
  inComingUbloxProtocol = UBLOX_PROTOCOL_NOT_DETECTED;
}
#endif

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setGPSPower",
    "generate" : "jswrap_banglejs_setGPSPower",
    "params" : [
      ["isOn","bool","True if the GPS should be on, false if not"],
      ["appID","JsVar","A string with the app's name in, used to ensure one app can't turn off something another app is using"]
    ],
    "return" : ["bool","Is the GPS on?"],
    "ifdef" : "BANGLEJS"
}
Set the power to the GPS.

When on, data is output via the `GPS` event on `Bangle`:

```
Bangle.setGPSPower(true, "myapp");
Bangle.on('GPS',print);
```

*When on, the GPS draws roughly 20mA*
*/
bool jswrap_banglejs_setGPSPower(bool isOn, JsVar *appId) {
#ifdef GPS_PIN_RX
  bool wasOn = bangleFlags & JSBF_GPS_ON;
  isOn = setDeviceRequested("GPS", appId, isOn);
  if (isOn) {
    if (!wasOn) {
      JshUSARTInfo inf;
      jshUSARTInitInfo(&inf);
      inf.baudRate = 9600;
      inf.pinRX = GPS_PIN_RX;
      inf.pinTX = GPS_PIN_TX;
      jshUSARTSetup(GPS_UART, &inf);
      jswrap_banglejs_pwrGPS(true); // turn on, set JSBF_GPS_ON
      resetUbloxIn();
      memset(&gpsFix,0,sizeof(gpsFix));
    }
  } else { // !isOn
    jswrap_banglejs_pwrGPS(false); // turn off, clear JSBF_GPS_ON
    // setting pins to pullup will cause jshardware.c to disable the UART, saving power
    jshPinSetState(GPS_PIN_RX, JSHPINSTATE_GPIO_IN_PULLUP);
    jshPinSetState(GPS_PIN_TX, JSHPINSTATE_GPIO_IN_PULLUP);
  }
  return isOn;
#else
  return false;
#endif
}
/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isGPSOn",
    "generate" : "jswrap_banglejs_isGPSOn",
    "return" : ["bool","Is the GPS on?"],
    "ifdef" : "BANGLEJS"
}
Is the GPS powered?

Set power with `Bangle.setGPSPower(...);`
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isGPSOn() {
  return bangleFlags & JSBF_GPS_ON;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getGPSFix",
    "generate" : "jswrap_banglejs_getGPSFix",
    "return" : ["JsVar","A GPS fix object with `{lat,lon,...}`"],
    "ifdef" : "BANGLEJS"
}
Get the last available GPS fix info (or `undefined` if GPS is off).

The fix info received is the same as you'd get from the `Bangle.GPS` event.
*/
JsVar *jswrap_banglejs_getGPSFix() {
#ifdef GPS_PIN_RX
  if (!jswrap_banglejs_isGPSOn()) return NULL;
  return nmea_to_jsVar(&gpsFix);
#else
  return 0;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setCompassPower",
    "generate" : "jswrap_banglejs_setCompassPower",
    "params" : [
      ["isOn","bool","True if the Compass should be on, false if not"],
      ["appID","JsVar","A string with the app's name in, used to ensure one app can't turn off something another app is using"]
    ],
    "return" : ["bool","Is the Compass on?"],
    "ifdef" : "BANGLEJS"
}
Set the power to the Compass

When on, data is output via the `mag` event on `Bangle`:

```
Bangle.setCompassPower(true, "myapp");
Bangle.on('mag',print);
```

*When on, the compass draws roughly 2mA*
*/
bool jswrap_banglejs_setCompassPower(bool isOn, JsVar *appId) {
#ifdef MAG_I2C
  bool wasOn = bangleFlags & JSBF_COMPASS_ON;
  isOn = setDeviceRequested("Compass", appId, isOn);
  //jsiConsolePrintf("setCompassPower %d %d\n",wasOn,isOn);

  if (isOn) bangleFlags |= JSBF_COMPASS_ON;
  else bangleFlags &= ~JSBF_COMPASS_ON;

  if (isOn) {
    if (!wasOn) { // If it wasn't on before, reset
#ifdef MAG_DEVICE_GMC303
      jswrap_banglejs_compassWr(0x31,4); // continuous measurement mode, 20Hz
#endif
    }
  } else { // !isOn -> turn off
#ifdef MAG_DEVICE_GMC303
    jswrap_banglejs_compassWr(0x31,0); // off
#endif
  }
  return isOn;
#else
  return false;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isCompassOn",
    "generate" : "jswrap_banglejs_isCompassOn",
    "return" : ["bool","Is the Compass on?"],
    "ifdef" : "BANGLEJS"
}
Is the compass powered?

Set power with `Bangle.setCompassPower(...);`
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isCompassOn() {
  return bangleFlags & JSBF_COMPASS_ON;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "resetCompass",
    "generate" : "jswrap_banglejs_resetCompass",
    "params" : [],
    "ifdef" : "BANGLEJS"
}
Resets the compass minimum/maximum values. Can be used if the compass isn't
providing a reliable heading any more.
*/
void jswrap_banglejs_resetCompass() {
#ifdef MAG_I2C
  mag.x = 0;
  mag.y = 0;
  mag.z = 0;
  magmin.x = 32767;
  magmin.y = 32767;
  magmin.z = 32767;
  magmax.x = -32768;
  magmax.y = -32768;
  magmax.z = -32768;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setBarometerPower",
    "generate" : "jswrap_banglejs_setBarometerPower",
    "params" : [
      ["isOn","bool","True if the barometer IC should be on, false if not"],
      ["appID","JsVar","A string with the app's name in, used to ensure one app can't turn off something another app is using"]
    ],
    "return" : ["bool","Is the Barometer on?"],
    "#if" : "defined(DTNO1_F5) || defined(BANGLEJS_Q3) || defined(DICKENS)"
}
Set the power to the barometer IC


When on, the barometer draws roughly 50uA
*/
bool jswrap_banglejs_setBarometerPower(bool isOn, JsVar *appId) {
#ifdef PRESSURE_I2C
  bool wasOn = bangleFlags & JSBF_BAROMETER_ON;
  isOn = setDeviceRequested("Barom", appId, isOn);
  if (isOn) bangleFlags |= JSBF_BAROMETER_ON;
  else bangleFlags &= ~JSBF_BAROMETER_ON;
  if (isOn) {
    if (!wasOn) {
#ifdef PRESSURE_DEVICE_SPL06_007
      jswrap_banglejs_barometerWr(SPL06_CFGREG, 0); // No FIFO or IRQ (should be default but has been nonzero when read!
      jswrap_banglejs_barometerWr(SPL06_PRSCFG, 0x33); // pressure oversample by 8x, 8 measurement per second
      jswrap_banglejs_barometerWr(SPL06_TMPCFG, 0xB3); // temperature oversample by 8x, 8 measurements per second, external sensor
      jswrap_banglejs_barometerWr(SPL06_MEASCFG, 7); // continuous temperature and pressure measurement
      // read calibration data
      unsigned char buf[SPL06_COEF_NUM];
      buf[0] = SPL06_COEF_START; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false);
      jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, SPL06_COEF_NUM, buf, true);
      barometer_c0 = twosComplement(((unsigned short)buf[0] << 4) | (((unsigned short)buf[1] >> 4) & 0x0F), 12);
      barometer_c1 = twosComplement((((unsigned short)buf[1] & 0x0F) << 8) | buf[2], 12);
      barometer_c00 = twosComplement(((unsigned int)buf[3] << 12) | ((unsigned int)buf[4] << 4) | (((unsigned int)buf[5] >> 4) & 0x0F), 20);
      barometer_c10 = twosComplement((((unsigned int)buf[5] & 0x0F) << 16) | ((unsigned int)buf[6] << 8) | (unsigned int)buf[7], 20);
      barometer_c01 = twosComplement(((unsigned short)buf[8] << 8) | (unsigned short)buf[9], 16);
      barometer_c11 = twosComplement(((unsigned short)buf[10] << 8) | (unsigned short)buf[11], 16);
      barometer_c20 = twosComplement(((unsigned short)buf[12] << 8) | (unsigned short)buf[13], 16);
      barometer_c21 = twosComplement(((unsigned short)buf[14] << 8) | (unsigned short)buf[15], 16);
      barometer_c30 = twosComplement(((unsigned short)buf[16] << 8) | (unsigned short)buf[17], 16);
#endif
#ifdef PRESSURE_DEVICE_BMP280
      jswrap_banglejs_barometerWr(0xF4, 0x27); // ctrl_meas_reg - normal mode, no pressure/temp oversample
      jswrap_banglejs_barometerWr(0xF5, 0xA0); // config_reg - 1s standby, no filter, I2C
      // read calibration data
      unsigned char buf[24];
      buf[0] = 0x88; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false);
      jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, 24, buf, true);
      int i;
      barometerDT[0] = ((int)buf[1] << 8) | (int)buf[0];  //first coeff is unsigned
      for (i=1;i<3;i++)
        barometerDT[i] = twosComplement(((int)buf[(i*2)+1] << 8) | (int)buf[i*2], 16);
      barometerDP[0] = ((int)buf[7] << 8) | (int)buf[6];  //first coeff is unsigned
      for (i=1;i<9;i++)
        barometerDP[i] = twosComplement(((int)buf[(i*2)+7] << 8) | (int)buf[(i*2)+6], 16);
#endif
    } // wasOn
  } else { // !isOn -> turn off
#ifdef PRESSURE_DEVICE_SPL06_007
    jswrap_banglejs_barometerWr(SPL06_MEASCFG, 0); // Barometer off
#endif
#ifdef PRESSURE_DEVICE_BMP280
    jswrap_banglejs_barometerWr(0xF4, 0); // Barometer off
#endif
  }
  return isOn;
#else
  return false;
#endif
}


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "isBarometerOn",
    "generate" : "jswrap_banglejs_isBarometerOn",
    "return" : ["bool","Is the Barometer on?"],
    "#if" : "defined(DTNO1_F5) || defined(BANGLEJS_Q3) || defined(DICKENS)"
}
Is the Barometer powered?

Set power with `Bangle.setBarometerPower(...);`
*/
// emscripten bug means we can't use 'bool' as return value here!
int jswrap_banglejs_isBarometerOn() {
  return bangleFlags & JSBF_BAROMETER_ON;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getStepCount",
    "generate" : "jswrap_banglejs_getStepCount",
    "return" : ["int","The number of steps recorded by the step counter"],
    "ifdef" : "BANGLEJS"
}
Returns the current amount of steps recorded by the step counter
*/
int jswrap_banglejs_getStepCount() {
  return stepCounter;
}


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getCompass",
    "generate" : "jswrap_banglejs_getCompass",
    "return" : ["JsVar","An object containing magnetometer readings (as below)"],
    "ifdef" : "BANGLEJS"
}
Get the most recent Magnetometer/Compass reading. Data is in the same format as the `Bangle.on('mag',` event.

Returns an `{x,y,z,dx,dy,dz,heading}` object

* `x/y/z` raw x,y,z magnetometer readings
* `dx/dy/dz` readings based on calibration since magnetometer turned on
* `heading` in degrees based on calibrated readings (will be NaN if magnetometer hasn't been rotated around 360 degrees)

To get this event you must turn the compass on
with `Bangle.setCompassPower(1)`.*/
JsVar *jswrap_banglejs_getCompass() {
#ifdef MAG_I2C
  JsVar *o = jsvNewObject();
  if (o) {
    jsvObjectSetChildAndUnLock(o, "x", jsvNewFromInteger(mag.x));
    jsvObjectSetChildAndUnLock(o, "y", jsvNewFromInteger(mag.y));
    jsvObjectSetChildAndUnLock(o, "z", jsvNewFromInteger(mag.z));
    int dx = mag.x - ((magmin.x+magmax.x)/2);
    int dy = mag.y - ((magmin.y+magmax.y)/2);
    int dz = mag.z - ((magmin.z+magmax.z)/2);
    jsvObjectSetChildAndUnLock(o, "dx", jsvNewFromInteger(dx));
    jsvObjectSetChildAndUnLock(o, "dy", jsvNewFromInteger(dy));
    jsvObjectSetChildAndUnLock(o, "dz", jsvNewFromInteger(dz));
    int cx = magmax.x-magmin.x;
    int cy = magmax.y-magmin.y;
    int c = cx*cx+cy*cy;
    double h = NAN;
    if (c>3000) { // only give a heading if we think we have valid data (eg enough magnetic field difference in min/max
      h = jswrap_math_atan2(dx,dy)*180/PI;
      if (h<0) h+=360;
    }
    jsvObjectSetChildAndUnLock(o, "heading", jsvNewFromFloat(h));
  }
  return o;
#else
  return 0;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getAccel",
    "generate" : "jswrap_banglejs_getAccel",
    "return" : ["JsVar","An object containing accelerometer readings (as below)"],
    "ifdef" : "BANGLEJS"
}
Get the most recent accelerometer reading. Data is in the same format as the `Bangle.on('accel',` event.

* `x` is X axis (left-right) in `g`
* `y` is Y axis (up-down) in `g`
* `z` is Z axis (in-out) in `g`
* `diff` is difference between this and the last reading in `g`
* `mag` is the magnitude of the acceleration in `g`
*/
JsVar *jswrap_banglejs_getAccel() {
  JsVar *o = jsvNewObject();
  if (o) {
    jsvObjectSetChildAndUnLock(o, "x", jsvNewFromFloat(acc.x/8192.0));
    jsvObjectSetChildAndUnLock(o, "y", jsvNewFromFloat(acc.y/8192.0));
    jsvObjectSetChildAndUnLock(o, "z", jsvNewFromFloat(acc.z/8192.0));
    jsvObjectSetChildAndUnLock(o, "mag", jsvNewFromFloat(sqrt(accMagSquared)/8192.0));
    jsvObjectSetChildAndUnLock(o, "diff", jsvNewFromFloat(sqrt(accdiff)/8192.0));
  }
  return o;
}

/* After init is called (a second time, NOT first time), we execute any JS that is due to be executed,
 * then we call this afterwards to shut down anything that isn't required (compass/hrm/etc). */
void jswrap_banglejs_postInit() {
#ifdef HEARTRATE
  if ((bangleFlags & JSBF_HRM_ON) && !getDeviceRequested("HRM")) {
    jswrap_banglejs_setHRMPower(false, SETDEVICEPOWER_FORCE);
  }
#endif
#ifdef PRESSURE_I2C
  //jsiConsolePrintf("Barometer %d %d\n",bangleFlags & JSBF_BAROMETER_ON, getDeviceRequested("Barom"));
  if ((bangleFlags & JSBF_BAROMETER_ON) && !getDeviceRequested("Barom")) {
    jswrap_banglejs_setBarometerPower(false, SETDEVICEPOWER_FORCE);
  }
#endif
#ifdef MAG_I2C
  //jsiConsolePrintf("Magnetometer %d %d\n",bangleFlags & JSBF_COMPASS_ON, getDeviceRequested("Compass"));
  if ((bangleFlags & JSBF_COMPASS_ON) && !getDeviceRequested("Compass")) {
    jswrap_banglejs_setCompassPower(false, SETDEVICEPOWER_FORCE);
  }
#endif
#ifdef GPS_PIN_RX
  //jsiConsolePrintf("GPS %d %d\n",bangleFlags & JSBF_GPS_ON, getDeviceRequested("GPS"));
  if ((bangleFlags & JSBF_GPS_ON) && !getDeviceRequested("GPS")) {
    jswrap_banglejs_setGPSPower(false, SETDEVICEPOWER_FORCE);
  }
#endif
}

/*JSON{
  "type" : "init",
  "generate" : "jswrap_banglejs_init"
}*/
NO_INLINE void jswrap_banglejs_init() {
  IOEventFlags channel;
  bool firstRun = jsiStatus & JSIS_FIRST_BOOT; // is this the first time jswrap_banglejs_init was called?
  // Hardware init that we only do the very first time we start
  if (firstRun) {
#ifdef BANGLEJS_F18
    jshPinOutput(18,0); // what's this?
#endif
#ifdef ID205
    jshPinOutput(3,1); // general VDD power?
    jshPinOutput(46,0); // What's this? Who knows! But it stops screen flicker and makes the touchscreen work nicely
    jshPinOutput(LCD_BL,1); // Backlight
#endif
#ifndef EMULATED
    jshPinOutput(VIBRATE_PIN,0); // vibrate off

#ifdef NRF52832
    jswrap_ble_setTxPower(4);
#endif

    // Set up I2C
    i2cBusy = true;
#ifdef BANGLEJS_Q3
    jshI2CInitInfo(&i2cAccel);
    i2cAccel.bitrate = 0x7FFFFFFF; // make it as fast as we can go
    i2cAccel.pinSDA = ACCEL_PIN_SDA;
    i2cAccel.pinSCL = ACCEL_PIN_SCL;
    jsi2cSetup(&i2cAccel);

    jshI2CInitInfo(&i2cMag);
    i2cMag.bitrate = 0x7FFFFFFF; // make it as fast as we can go
    i2cMag.pinSDA = MAG_PIN_SDA;
    i2cMag.pinSCL = MAG_PIN_SCL;
    jsi2cSetup(&i2cMag);

    jshI2CInitInfo(&i2cTouch);
    i2cTouch.bitrate = 0x7FFFFFFF; // make it as fast as we can go
    i2cTouch.pinSDA = TOUCH_PIN_SDA;
    i2cTouch.pinSCL = TOUCH_PIN_SCL;
    jsi2cSetup(&i2cTouch);

    jshI2CInitInfo(&i2cPressure);
    i2cPressure.bitrate = 0x7FFFFFFF; // make it as fast as we can go
    i2cPressure.pinSDA = PRESSURE_PIN_SDA;
    i2cPressure.pinSCL = PRESSURE_PIN_SCL;
    jsi2cSetup(&i2cPressure);

    jshI2CInitInfo(&i2cHRM);
    i2cHRM.bitrate = 0x7FFFFFFF; // make it as fast as we can go
    i2cHRM.pinSDA = HEARTRATE_PIN_SDA;
    i2cHRM.pinSCL = HEARTRATE_PIN_SCL;
    jsi2cSetup(&i2cHRM);
#elif defined(ACCEL_PIN_SDA) // assume all the rest just use a global I2C
    jshI2CInitInfo(&i2cInternal);
    i2cInternal.bitrate = 0x7FFFFFFF; // make it as fast as we can go
    i2cInternal.pinSDA = ACCEL_PIN_SDA;
    i2cInternal.pinSCL = ACCEL_PIN_SCL;
    i2cInternal.clockStretch = false;
    jsi2cSetup(&i2cInternal);
#endif
#ifdef BANGLEJS_Q3
    // Touch init
    jshPinOutput(TOUCH_PIN_RST, 0);
    jshDelayMicroseconds(1000);
    jshPinOutput(TOUCH_PIN_RST, 1);
#endif
#ifdef BANGLEJS_F18
    // LCD pin init
    jshPinOutput(LCD_PIN_CS, 1);
    jshPinOutput(LCD_PIN_DC, 1);
    jshPinOutput(LCD_PIN_SCK, 1);
    for (int i=0;i<8;i++) jshPinOutput(i, 0);
    // IO expander reset
    jshPinOutput(28,0);
    jshDelayMicroseconds(10000);
    jshPinOutput(28,1);
    jshDelayMicroseconds(50000);
    jswrap_banglejs_ioWr(0,0);
    jswrap_banglejs_pwrHRM(false); // HRM off
    jswrap_banglejs_pwrGPS(false); // GPS off
    jswrap_banglejs_ioWr(IOEXP_LCD_RESET,0); // LCD reset on
    jshDelayMicroseconds(100000);
    jswrap_banglejs_ioWr(IOEXP_LCD_RESET,1); // LCD reset off
    jswrap_banglejs_pwrBacklight(true); // backlight on
    jshDelayMicroseconds(10000);
#endif
#endif
  }
#ifdef BANGLEJS_Q3
#ifndef EMULATED
  jshSetPinShouldStayWatched(TOUCH_PIN_IRQ,true);
  channel = jshPinWatch(TOUCH_PIN_IRQ, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, touchHandler);
#endif
#endif

  //jsiConsolePrintf("bangleFlags %d\n",bangleFlags);
  if (firstRun) {
    bangleFlags = JSBF_DEFAULT | JSBF_LCD_ON | JSBF_LCD_BL_ON; // includes bangleFlags
    lcdBrightness = 255;
  }
  inactivityTimer = 0; // reset the LCD timeout timer
  lcdPowerTimeout = DEFAULT_LCD_POWER_TIMEOUT;
  backlightTimeout = DEFAULT_BACKLIGHT_TIMEOUT;
  lockTimeout = DEFAULT_LOCK_TIMEOUT;
  lcdWakeButton = 0;
  // If the home button is still pressed when we're restarting, set up
  // lcdWakeButton so the event for button release is 'eaten'
  if (jshPinGetValue(HOME_BTN_PININDEX))
    lcdWakeButton = HOME_BTN;
#ifdef ESPR_BACKLIGHT_FADE
  realLcdBrightness = firstRun ? 0 : lcdBrightness;
  lcdFadeHandlerActive = false;
  jswrap_banglejs_setLCDPowerBacklight(bangleFlags & JSBF_LCD_BL_ON);
#endif

  buzzAmt = 0;
  beepFreq = 0;
  // Read settings and change beep/buzz behaviour...
  JsVar *settingsFN = jsvNewFromString("setting.json");
  JsVar *settings = jswrap_storage_readJSON(settingsFN,true);
  jsvUnLock(settingsFN);
  JsVar *v;
  v = jsvIsObject(settings) ? jsvObjectGetChild(settings,"beep",0) : 0;
  if (v && jsvGetBool(v)==false) {
    bangleFlags &= ~JSBF_ENABLE_BEEP;
  } else {
    bangleFlags |= JSBF_ENABLE_BEEP;
#ifdef SPEAKER_PIN
    if (!v || jsvIsStringEqual(v,"vib")) // default to use vibration for beep
      bangleFlags |= JSBF_BEEP_VIBRATE;
    else
      bangleFlags &= ~JSBF_BEEP_VIBRATE;
#else
    bangleFlags |= JSBF_BEEP_VIBRATE;
#endif
  }
  jsvUnLock(v);
  v = jsvIsObject(settings) ? jsvObjectGetChild(settings,"vibrate",0) : 0;
  if (v && jsvGetBool(v)==false) {
    bangleFlags &= ~JSBF_ENABLE_BUZZ;
  } else {
    bangleFlags |= JSBF_ENABLE_BUZZ;
  }
  jsvUnLock(v);

#if LCD_BPP==16
  graphicsTheme.fg = 0xFFFF;
  graphicsTheme.bg = 0;
  graphicsTheme.fg2 = 0xFFFF;
  graphicsTheme.bg2 = 0x0007;
  graphicsTheme.fgH = 0xFFFF;
  graphicsTheme.bgH = 0x02F7;
  graphicsTheme.dark = true;
#else
  graphicsTheme.fg = 0;
  graphicsTheme.bg = 7;
  graphicsTheme.fg2 = 1;
  graphicsTheme.bg2 = 3;
  graphicsTheme.fgH = 0;
  graphicsTheme.bgH = 3;
  graphicsTheme.dark = false;
#endif
  //
  v = jsvIsObject(settings) ? jsvObjectGetChild(settings,"theme",0) : 0;
  if (jsvIsObject(v)) {
    graphicsTheme.fg = jsvGetIntegerAndUnLock(jsvObjectGetChild(v,"fg",0));
    graphicsTheme.bg = jsvGetIntegerAndUnLock(jsvObjectGetChild(v,"bg",0));
    graphicsTheme.fg2 = jsvGetIntegerAndUnLock(jsvObjectGetChild(v,"fg2",0));
    graphicsTheme.bg2 = jsvGetIntegerAndUnLock(jsvObjectGetChild(v,"bg2",0));
    graphicsTheme.fgH = jsvGetIntegerAndUnLock(jsvObjectGetChild(v,"fgH",0));
    graphicsTheme.bgH = jsvGetIntegerAndUnLock(jsvObjectGetChild(v,"bgH",0));
    graphicsTheme.dark = jsvGetBoolAndUnLock(jsvObjectGetChild(v,"dark",0));
  }
  jsvUnLock2(v,settings);


#ifdef LCD_WIDTH
  // Create backing graphics for LCD
  JsVar *graphics = jspNewObject(0, "Graphics");
  if (!graphics) return; // low memory
  JsGraphics gfx;
  graphicsStructInit(&gfx, LCD_WIDTH, LCD_HEIGHT, LCD_BPP);
#ifdef LCD_CONTROLLER_LPM013M126
  gfx.data.type = JSGRAPHICSTYPE_MEMLCD;
#endif
#ifdef LCD_CONTROLLER_ST7789_8BIT
  gfx.data.type = JSGRAPHICSTYPE_ST7789_8BIT;
#endif
#if defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
  gfx.data.type = JSGRAPHICSTYPE_SPILCD;
#endif
  gfx.data.flags = 0;
#ifdef DTNO1_F5
  gfx.data.flags = JSGRAPHICSFLAGS_INVERT_X | JSGRAPHICSFLAGS_INVERT_Y;
#endif

  gfx.data.fontSize = JSGRAPHICS_FONTSIZE_6X8+1; // 2x size is default
  gfx.graphicsVar = graphics;

  if (firstRun) {
#ifdef LCD_CONTROLLER_LPM013M126
    lcdMemLCD_init(&gfx);
    jswrap_banglejs_pwrBacklight(true);
#endif
#ifdef LCD_CONTROLLER_ST7789_8BIT
    lcdST7789_init(&gfx);
#endif
#if defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
    lcdInit_SPILCD(&gfx);
#endif
  }
  graphicsSetVar(&gfx);
  jsvObjectSetChild(execInfo.root, "g", graphics);
  jsvObjectSetChild(execInfo.hiddenRoot, JS_GRAPHICS_VAR, graphics);
  graphicsGetFromVar(&gfx, graphics);

  // Create 'flip' fn
  JsVar *fn;
  fn = jsvNewNativeFunction((void (*)(void))lcd_flip, JSWAT_VOID|JSWAT_THIS_ARG|(JSWAT_BOOL << (JSWAT_BITS*1)));
  jsvObjectSetChildAndUnLock(graphics,"flip",fn);

  if (!firstRun) {
    // Not first run - reset the LCD mode if it was set
#ifdef LCD_CONTROLLER_ST7789_8BIT
    if (lcdST7789_getMode()!=LCDST7789_MODE_UNBUFFERED) {
      lcdST7789_setMode( LCDST7789_MODE_UNBUFFERED );
      // screen will now be garbled - clear it
      graphicsClear(&gfx);
    }
#endif
  }

  bool showSplashScreen = true;
  /* If we're doing a flash load, don't show
  the logo because it'll just get overwritten
  in a fraction of a second anyway */
  if (jsiStatus & JSIS_TODO_FLASH_LOAD) {
    showSplashScreen = false;
    if (!firstRun) {
      // Display a loading screen
      int x = LCD_WIDTH/2;
      int y = LCD_HEIGHT/2;
      graphicsFillRect(&gfx, x-49, y-19, x+49, y+19, graphicsTheme.bg);
      gfx.data.fgColor = graphicsTheme.fg;
      graphicsDrawRect(&gfx, x-50, y-20, x+50, y+20);
      y -= 4;
      x -= 4*6;
      const char *s = "Loading...";
      while (*s) {
        graphicsDrawChar6x8(&gfx, x, y, *s, 1, false);
        x+=6;
        s++;
      }
  #ifdef BANGLEJS_Q3
      lcdMemLCD_flip(&gfx);
  #endif
  #if defined(LCD_CONTROLLER_GC9A01)
      lcdFlip_SPILCD(&gfx);
  #endif
    }
  }

#ifdef DICKENS
  // don't show splash screen unless the watch has been totally reset - stops flicker on boot
  if (!(jsiStatus & JSIS_COMPLETELY_RESET))
    showSplashScreen = false;
#endif
  if (showSplashScreen) {
    graphicsClear(&gfx);
    bool drawInfo = false;
    JsVar *img = jsfReadFile(jsfNameFromString(".splash"),0,0);
    int w,h;
    if (!jsvIsString(img) || !jsvGetStringLength(img)) {
      jsvUnLock(img);
      drawInfo = true;
      img = jswrap_banglejs_getLogo();
    }
    w = (int)(unsigned char)jsvGetCharInString(img, 0);
    h = (int)(unsigned char)jsvGetCharInString(img, 1);
    graphicsSetVar(&gfx);
    int y=(LCD_HEIGHT-h)/2;
    jsvUnLock2(jswrap_graphics_drawImage(graphics,img,(LCD_WIDTH-w)/2,y,NULL),img);
    if (drawInfo) {
      if (h > 56) y += h-28;
      else y += h-15;
      char addrStr[20];
#ifndef EMULATED
      JsVar *addr = jswrap_ble_getAddress(); // Write MAC address in bottom right
#else
      JsVar *addr = jsvNewFromString("Emulated");
#endif
      jsvGetString(addr, addrStr, sizeof(addrStr));
      jsvUnLock(addr);
      jswrap_graphics_drawCString(&gfx,8,y,JS_VERSION);
      jswrap_graphics_drawCString(&gfx,8,y+10,addrStr);
      jswrap_graphics_drawCString(&gfx,8,y+20,"Copyright 2021 G.Williams");
    }
  }
#ifdef BANGLEJS_Q3
    lcdMemLCD_flip(&gfx);
#endif
#if defined(LCD_CONTROLLER_GC9A01)
    lcdFlip_SPILCD(&gfx);
#endif
  graphicsStructResetState(&gfx);
  graphicsSetVar(&gfx);

  jsvUnLock(graphics);
#endif

  if (firstRun) {
    unsigned char buf[2];
#ifdef ACCEL_DEVICE_KX023
    // KX023-1025 accelerometer init
    jswrap_banglejs_accelWr(0x18,0x0a); // CNTL1 Off (top bit)
    jswrap_banglejs_accelWr(0x19,0x80); // CNTL2 Software reset
    buf[0] = 0x19; buf[1] = 0x80; // Second I2C address for software reset (issue #1972)
    jsi2cWrite(ACCEL_I2C, ACCEL_ADDR-2, 2, buf, true);
    jshDelayMicroseconds(2000);
    jswrap_banglejs_accelWr(0x1a,0b10011000); // CNTL3 12.5Hz tilt, 400Hz tap, 0.781Hz motion detection
    //jswrap_banglejs_accelWr(0x1b,0b00000001); // ODCNTL - 25Hz acceleration output data rate, filtering low-pass ODR/9
    jswrap_banglejs_accelWr(0x1b,0b00000000); // ODCNTL - 12.5Hz acceleration output data rate, filtering low-pass ODR/9

    jswrap_banglejs_accelWr(0x1c,0); // INC1 disabled
    jswrap_banglejs_accelWr(0x1d,0); // INC2 disabled
    jswrap_banglejs_accelWr(0x1e,0x3F); // INC3 enable tap detect in all 6 directions
    jswrap_banglejs_accelWr(0x1f,0); // INC4 disabled
    jswrap_banglejs_accelWr(0x20,0); // INC5 disabled
    jswrap_banglejs_accelWr(0x21,0); // INC6 disabled
    jswrap_banglejs_accelWr(0x23,3); // WUFC wakeupi detect counter
    jswrap_banglejs_accelWr(0x24,3); // TDTRC Tap detect enable
    jswrap_banglejs_accelWr(0x25, 0x78); // TDTC Tap detect double tap (0x78 default)
    jswrap_banglejs_accelWr(0x26, 0xCB); // TTH Tap detect threshold high (0xCB default)
    jswrap_banglejs_accelWr(0x27, 0x1A); // TTL Tap detect threshold low (0x1A default)
    jswrap_banglejs_accelWr(0x30,1); // ATH low wakeup detect threshold
    //jswrap_banglejs_accelWr(0x35,0 << 4); // LP_CNTL no averaging of samples
    jswrap_banglejs_accelWr(0x35,2 << 4); // LP_CNTL 4x averaging of samples
    jswrap_banglejs_accelWr(0x3e,0); // clear the buffer
    jswrap_banglejs_accelWr(0x18,0b00101100);  // CNTL1 Off, low power, DRDYE=1, 4g range, TDTE (tap enable)=1, Wakeup=0, Tilt=0
    jswrap_banglejs_accelWr(0x18,0b10101100);  // CNTL1 On, low power, DRDYE=1, 4g range, TDTE (tap enable)=1, Wakeup=0, Tilt=0
    // high power vs low power uses an extra 150uA
#endif
#ifdef ACCEL_DEVICE_KXTJ3_1057
    // KXTJ3-1057 accelerometer init
    jswrap_banglejs_accelWr(0x1B,0b00101000); // CNTL1 Off (top bit)
    jswrap_banglejs_accelWr(0x1D,0x80); // CNTL2 Software reset
    jshDelayMicroseconds(2000);
    jswrap_banglejs_accelWr(0x21,0); // DATA_CTRL_REG - 12.5Hz out
    jswrap_banglejs_accelWr(0x1B,0b00101000); // CNTL1 Off (top bit), low power, DRDYE=1, 4g, Wakeup=0,
    jswrap_banglejs_accelWr(0x1B,0b10101000); // CNTL1 On (top bit), low power, DRDYE=1, 4g, Wakeup=0,
#endif
#ifdef ACCEL_DEVICE_KX126
    // KX126_1063 accelerometer init
    jswrap_banglejs_accelWr(KX126_CNTL1,0x00); // CNTL1 standby mode (top bit)
    jswrap_banglejs_accelWr(KX126_CNTL2,KX126_CNTL2_SRST); // CNTL2 Software reset (top bit)
    jshDelayMicroseconds(2000);
    jswrap_banglejs_accelWr(KX126_CNTL3,KX126_CNTL3_OTP_12P5|KX126_CNTL3_OTDT_400|KX126_CNTL3_OWUF_0P781); // CNTL3 12.5Hz tilt, 400Hz tap, 0.781Hz motion detection
    jswrap_banglejs_accelWr(KX126_ODCNTL,KX126_ODCNTL_OSA_12P5); // ODCNTL - 12.5Hz output data rate (ODR), with low-pass filter set to ODR/9
    jswrap_banglejs_accelWr(KX126_INC1,0); // INC1 - interrupt output pin INT1 disabled
    jswrap_banglejs_accelWr(KX126_INC2,0); // INC2 - wake-up & back-to-sleep ignores all 3 axes
    jswrap_banglejs_accelWr(KX126_INC3,0); // INC3 - tap detection ignores all 3 axes
    jswrap_banglejs_accelWr(KX126_INC4,0); // INC4 - no routing of interrupt reporting to pin INT1
    jswrap_banglejs_accelWr(KX126_INC5,0); // INC5 - interrupt output pin INT2 disabled
    jswrap_banglejs_accelWr(KX126_INC6,0); // INC6 - no routing of interrupt reporting to pin INT2
    jswrap_banglejs_accelWr(KX126_INC7,0); // INC7 - no step counter interrupts reported on INT1 or INT2
    jswrap_banglejs_accelWr(KX126_BUF_CLEAR,0); // clear the buffer

    jswrap_banglejs_accelWr(KX126_CNTL1,KX126_CNTL1_DRDYE|KX126_CNTL1_GSEL_4G); // CNTL1 - standby mode, low power, enable "data ready" interrupt, 4g, disable tap, tilt & pedometer (for now)
    jswrap_banglejs_accelWr(KX126_CNTL1,KX126_CNTL1_DRDYE|KX126_CNTL1_GSEL_4G|KX126_CNTL1_PC1); // CNTL1 - same as above but change from standby to operating mode
#endif

#ifdef PRESSURE_I2C
#ifdef PRESSURE_DEVICE_HP203
    // pressure init
    buf[0]=0x06;
    jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, true); // SOFT_RST
#endif
#ifdef PRESSURE_DEVICE_SPL06_007
    // pressure init
    buf[0]=SPL06_RESET; buf[1]=0x89;
    jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, true); // SOFT_RST
#endif
#ifdef PRESSURE_DEVICE_BMP280
    buf[0]=0xE0; buf[1]=0xB6;
    jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, true); // reset
#endif
    bangleFlags &= ~JSBF_BAROMETER_ON;
#endif

    // Accelerometer variables init
    stepcount_init();
    stepCounter = 0;
#ifdef MAG_I2C
#ifdef MAG_DEVICE_GMC303
    // compass init
    jswrap_banglejs_compassWr(0x32,1); // soft reset
    jswrap_banglejs_compassWr(0x31,0); // power down mode
#endif
    bangleFlags &= ~JSBF_COMPASS_ON;
    // ensure compass readings are reset to power-on state
    jswrap_banglejs_resetCompass();
#endif
  } // firstRun

  i2cBusy = false;
  // Other IO
#ifdef BAT_PIN_CHARGING
  jshPinSetState(BAT_PIN_CHARGING, JSHPINSTATE_GPIO_IN_PULLUP);
#endif
  // touch
  touchStatus = TS_NONE;
  touchLastState = 0;
  touchLastState2 = 0;
#ifdef HEARTRATE
  if (firstRun)
    hrm_init();
  hrm_sensor_init();
#endif

#ifndef EMULATED
  // Add watchdog timer to ensure watch always stays usable (hopefully!)
  // This gets killed when _kill / _init happens
  //  - the bootloader probably already set this up so the
  //    enable will do nothing - but good to try anyway
  jshEnableWatchDog(5); // 5 second watchdog
  // This timer kicks the watchdog, and does some other stuff as well
  pollInterval = DEFAULT_ACCEL_POLL_INTERVAL;
  // requires APP_TIMER_OP_QUEUE_SIZE=5 in BOARD.py
  uint32_t err_code = app_timer_create(&m_peripheral_poll_timer_id,
                      APP_TIMER_MODE_REPEATED,
                      peripheralPollHandler);
  jsble_check_error(err_code);
  #if NRF_SD_BLE_API_VERSION<5
  app_timer_start(m_peripheral_poll_timer_id, APP_TIMER_TICKS(pollInterval, APP_TIMER_PRESCALER), NULL);
  #else
  app_timer_start(m_peripheral_poll_timer_id, APP_TIMER_TICKS(pollInterval), NULL);
  #endif
#ifdef BANGLEJS_F18
  // Backlight PWM
  err_code = app_timer_create(&m_backlight_on_timer_id,
                        APP_TIMER_MODE_REPEATED,
                        backlightOnHandler);
  jsble_check_error(err_code);
  err_code = app_timer_create(&m_backlight_off_timer_id,
                      APP_TIMER_MODE_SINGLE_SHOT,
                      backlightOffHandler);
  jsble_check_error(err_code);
#endif
#endif // EMULATED

#ifdef BANGLEJS_Q3
  jshSetPinShouldStayWatched(BTN1_PININDEX,true);
  channel = jshPinWatch(BTN1_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, btn1Handler);
#else
  jshSetPinShouldStayWatched(BTN1_PININDEX,true);
  jshSetPinShouldStayWatched(BTN2_PININDEX,true);
  channel = jshPinWatch(BTN1_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, btn1Handler);
  channel = jshPinWatch(BTN2_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, btn2Handler);
#ifdef BTN3_PININDEX
  jshSetPinShouldStayWatched(BTN3_PININDEX,true);
  channel = jshPinWatch(BTN3_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, btn3Handler);
#endif
#ifdef BTN4_PININDEX
  jshSetPinShouldStayWatched(BTN4_PININDEX,true);
  channel = jshPinWatch(BTN4_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, btn4Handler);
#endif
#ifdef BTN5_PININDEX
  jshSetPinShouldStayWatched(BTN5_PININDEX,true);
  channel = jshPinWatch(BTN5_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, btn5Handler);
#endif
#endif

  /* If this isn't our first run, schedule this function 500ms
   * after everything is loaded. It'll then check whether any
   * peripherals got left on that should now be off, and will
   * shut them down if needed. This allows things like the
   * magnetometer to keep calibration, as well as stopping
   * resets of GPS/etc when swapping between apps.
   */
  if (!firstRun) {
    jsvUnLock(jsiSetTimeout(jswrap_banglejs_postInit, 500));
  }
  //jsiConsolePrintf("bangleFlags2 %d\n",bangleFlags);
}

/*JSON{
  "type" : "kill",
  "generate" : "jswrap_banglejs_kill"
}*/
void jswrap_banglejs_kill() {
#ifndef EMULATED
#ifdef BANGLEJS_F18
  app_timer_stop(m_backlight_on_timer_id);
  app_timer_stop(m_backlight_off_timer_id);
#endif
  app_timer_stop(m_peripheral_poll_timer_id);
#endif
#ifdef HEARTRATE
  hrm_sensor_kill();
#endif
#ifdef ESPR_BACKLIGHT_FADE
  if (lcdFadeHandlerActive) {
    jstStopExecuteFn(backlightFadeHandler, NULL);
    lcdFadeHandlerActive = false;
  }
#endif
  // stop and unlock beep & buzz
  jsvUnLock(promiseBeep);
  promiseBeep = 0;
  jsvUnLock(promiseBuzz);
  promiseBuzz = 0;
  if (beepFreq) jswrap_banglejs_beep_callback();
  if (buzzAmt) jswrap_banglejs_buzz_callback();
#ifdef PRESSURE_I2C
  jsvUnLock(promisePressure);
  promisePressure = 0;
#endif

  jshPinWatch(BTN1_PININDEX, false);
  jshSetPinShouldStayWatched(BTN1_PININDEX,false);
#ifdef BTN2_PININDEX
  jshPinWatch(BTN2_PININDEX, false);
  jshSetPinShouldStayWatched(BTN2_PININDEX,false);
#endif
#ifdef BTN3_PININDEX
  jshPinWatch(BTN3_PININDEX, false);
  jshSetPinShouldStayWatched(BTN3_PININDEX,false);
#endif
#ifdef BTN4_PININDEX
  jshSetPinShouldStayWatched(BTN4_PININDEX,false);
  jshPinWatch(BTN4_PININDEX, false);
#endif
#ifdef BTN5_PININDEX
  jshPinWatch(BTN5_PININDEX, false);
  jshSetPinShouldStayWatched(BTN5_PININDEX,false);
#endif
}

/*JSON{
  "type" : "idle",
  "generate" : "jswrap_banglejs_idle"
}*/
bool jswrap_banglejs_idle() {
  JsVar *bangle =jsvObjectGetChild(execInfo.root, "Bangle", 0);
  /* Check if we have an accelerometer listener, and set JSBF_ACCEL_LISTENER
   * accordingly - so we don't get a wakeup if we have no listener. */
  if (jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"accel"))
    bangleFlags |= JSBF_ACCEL_LISTENER;
  else
    bangleFlags &= ~JSBF_ACCEL_LISTENER;
#ifdef HEARTRATE
  if (jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"HRM-raw"))
    bangleFlags |= JSBF_HRM_INSTANT_LISTENER;
  else
    bangleFlags &= ~JSBF_HRM_INSTANT_LISTENER;
#endif

  if (!bangle) {
    bangleTasks = JSBT_NONE;
  }
  if (bangleTasks != JSBT_NONE) {
    if (bangleTasks & JSBT_LCD_OFF) jswrap_banglejs_setLCDPower(0);
    if (bangleTasks & JSBT_LCD_ON) jswrap_banglejs_setLCDPower(1);
    if (bangleTasks & JSBT_LCD_BL_OFF) jswrap_banglejs_setLCDPowerBacklight(0);
    if (bangleTasks & JSBT_LCD_BL_ON) jswrap_banglejs_setLCDPowerBacklight(1);
    if (bangleTasks & JSBT_LOCK) jswrap_banglejs_setLocked(1);
    if (bangleTasks & JSBT_UNLOCK) jswrap_banglejs_setLocked(0);
    if (bangleTasks & JSBT_RESET) jsiStatus |= JSIS_TODO_FLASH_LOAD;
    if (bangleTasks & JSBT_ACCEL_INTERVAL_DEFAULT) jswrap_banglejs_setPollInterval_internal(DEFAULT_ACCEL_POLL_INTERVAL);
    if (bangleTasks & JSBT_ACCEL_INTERVAL_POWERSAVE) jswrap_banglejs_setPollInterval_internal(POWER_SAVE_ACCEL_POLL_INTERVAL);
    if (bangleTasks & JSBT_ACCEL_DATA) {
      JsVar *o = jswrap_banglejs_getAccel();
      if (o) {
        jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"accel", &o, 1);
        jsvUnLock(o);
      }
    }
    if (bangleTasks & JSBT_ACCEL_TAPPED) {
      JsVar *o = jsvNewObject();
      if (o) {
        const char *string="";
#ifdef BANGLEJS_Q3
        if (tapInfo&2) string="front";
        if (tapInfo&1) string="back";
        if (tapInfo&8) string="bottom";
        if (tapInfo&4) string="top";
#else
        if (tapInfo&1) string="front";
        if (tapInfo&2) string="back";
        if (tapInfo&4) string="bottom";
        if (tapInfo&8) string="top";
#endif

        if (tapInfo&16) string="right";
        if (tapInfo&32) string="left";
        int n = (tapInfo&0x80)?2:1;
        jsvObjectSetChildAndUnLock(o, "dir", jsvNewFromString(string));
        jsvObjectSetChildAndUnLock(o, "double", jsvNewFromBool(tapInfo&0x80));
        jsvObjectSetChildAndUnLock(o, "x", jsvNewFromInteger((tapInfo&16)?-n:(tapInfo&32)?n:0));
        jsvObjectSetChildAndUnLock(o, "y", jsvNewFromInteger((tapInfo&4)?-n:(tapInfo&8)?n:0));
        jsvObjectSetChildAndUnLock(o, "z", jsvNewFromInteger((tapInfo&1)?-n:(tapInfo&2)?n:0));
        jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"tap", &o, 1);
        jsvUnLock(o);
      }
    }
  #ifdef PRESSURE_I2C
  if (bangleTasks & JSBT_PRESSURE_DATA) {
    JsVar *o = jswrap_banglejs_getBarometerObject();
    if (o) {
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"pressure", &o, 1);
      jsvUnLock(o);
    }
  }
  #endif
  #ifdef GPS_PIN_RX
    if (bangleTasks & JSBT_GPS_DATA) {
      JsVar *o = nmea_to_jsVar(&gpsFix);
      if (o) {
        jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"GPS", &o, 1);
        jsvUnLock(o);
      }
    }
    if (bangleTasks & JSBT_GPS_DATA_PARTIAL) {
      if (jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"GPS-raw")) {
        JsVar *data = jsvObjectGetChild(bangle,"_gpsdata",0);
        if (!data) {
          data = jsvNewFromEmptyString();
          jsvObjectSetChild(bangle,"_gpsdata",data);
        }
        jsvAppendStringBuf(data, ubloxMsg, ubloxMsgLength);
        jsvUnLock(data);
      }
    }
    if (bangleTasks & JSBT_GPS_DATA_LINE) {
      if (jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"GPS-raw")) {
        // if GPS data had overflowed, report it
        if (bangleTasks & JSBT_GPS_DATA_OVERFLOW) {
          jsErrorFlags |= JSERR_RX_FIFO_FULL;
        }
        // Get any data previously added with JSBT_GPS_DATA_PARTIAL
        JsVar *line = jsvObjectGetChild(bangle,"_gpsdata",0);
        if (line) {
          jsvObjectRemoveChild(bangle,"_gpsdata");
          jsvAppendStringBuf(line, ubloxMsg, ubloxMsgLength);
        } else line = jsvNewStringOfLength(ubloxMsgLength, ubloxMsg);
        // if we have any data, queue it
        if (line)
          jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"GPS-raw", &line, 1);
        jsvUnLock(line);
      } else {
        jsvObjectRemoveChild(bangle,"_gpsdata");
      }
    }
  #endif
    if (bangleTasks & JSBT_MAG_DATA) {
      if (bangle && jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"mag")) {
        JsVar *o = jswrap_banglejs_getCompass();
        if (o) {
          jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"mag", &o, 1);
          jsvUnLock(o);
        }
      }
    }
#ifdef HEARTRATE
    if (bangleTasks & JSBT_HRM_INSTANT_DATA) {
      JsVar *o = hrm_sensor_getJsVar();
      if (o) {
        jsvObjectSetChildAndUnLock(o,"raw",jsvNewFromInteger(hrmInfo.raw));
        jsvObjectSetChildAndUnLock(o,"filt",jsvNewFromInteger(hrmInfo.filtered));
        jsvObjectSetChildAndUnLock(o,"thresh",jsvNewFromInteger(hrmInfo.thresh >> HRM_THRESH_SHIFT));
        jsvObjectSetChildAndUnLock(o,"isBeat",jsvNewFromBool(hrmInfo.isBeat));
        jsvObjectSetChildAndUnLock(o,"bpm",jsvNewFromFloat(hrmInfo.bpm10 / 10.0));
        jsvObjectSetChildAndUnLock(o,"confidence",jsvNewFromInteger(hrmInfo.confidence));
        jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"HRM-raw", &o, 1);
        jsvUnLock(o);
      }
    }
    if (bangleTasks & JSBT_HRM_DATA) {
      JsVar *o = jsvNewObject();
      if (o) {
        jsvObjectSetChildAndUnLock(o,"bpm",jsvNewFromInteger(hrmInfo.bpm10 / 10.0));
        jsvObjectSetChildAndUnLock(o,"confidence",jsvNewFromInteger(hrmInfo.confidence));
        JsVar *a = jsvNewEmptyArray();
        if (a) {
          int n = hrmInfo.timeIdx;
          for (int i=0;i<HRM_HIST_LEN;i++) {
            jsvArrayPushAndUnLock(a, jsvNewFromFloat(hrm_time_to_bpm10(hrmInfo.times[n]) / 10.0));
            n++;
            if (n==HRM_HIST_LEN) n=0;
          }
          jsvObjectSetChildAndUnLock(o,"history",a);
        }
        jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"HRM", &o, 1);
        jsvUnLock(o);
      }
    }
#endif
    if (bangleTasks & JSBT_GESTURE_DATA) {
      if (jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"gesture")) {
        JsVar *arr = jsvNewTypedArray(ARRAYBUFFERVIEW_INT8, accGestureRecordedCount*3);
        if (arr) {
          int idx = accHistoryIdx - (accGestureRecordedCount*3);
          while (idx<0) idx+=sizeof(accHistory);
          JsvArrayBufferIterator it;
          jsvArrayBufferIteratorNew(&it, arr, 0);
          for (int i=0;i<accGestureRecordedCount*3;i++) {
            jsvArrayBufferIteratorSetByteValue(&it, accHistory[idx++]);
            jsvArrayBufferIteratorNext(&it);
            if (idx>=(int)sizeof(accHistory)) idx-=sizeof(accHistory);
          }
          jsvArrayBufferIteratorFree(&it);
          jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"gesture", &arr, 1);
          jsvUnLock(arr);
        }
      }
  #ifdef USE_TENSORFLOW
      if (jsiObjectHasCallbacks(bangle, JS_EVENT_PREFIX"aiGesture")) {
        //JsVar *model = jsfReadFile(jsfNameFromString(".tfmodel"),0,0);
        JsfFileHeader header;
        uint32_t modelAddr = jsfFindFile(jsfNameFromString(".tfmodel"), &header);

        if (!modelAddr) {
          jsiConsolePrintf("TF error - no model\n");
        } else {
          // allocate the model on the stack rather than using ReadFile
          // as that will save us a few JsVars
          size_t modelSize = jsfGetFileSize(&header);
          char *modelBuf = alloca(modelSize);
          jshFlashRead(modelBuf, modelAddr, modelSize);
          JsVar *model = jsvNewNativeString(modelBuf, modelSize);

          // delete command history and run a GC pass to try and free up some space
          while (jsiFreeMoreMemory());
          jsvGarbageCollect();
          JsVar *tf = jswrap_tensorflow_create(4000, model);
          jsvUnLock(model);
          if (!tf) {
            //jsiConsolePrintf("TF error - no memory\n");
            // we get an exception anyway
          } else {
            //jsiConsolePrintf("TF in\n");
            JsVar *v = jswrap_tfmicrointerpreter_getInput(tf);
            JsvArrayBufferIterator it;
            jsvArrayBufferIteratorNew(&it, v, 0);
            int idx = accHistoryIdx - (accGestureRecordedCount*3);
            while (idx<0) idx+=sizeof(accHistory);
            for (int i=0;i<accGestureRecordedCount*3;i++) {
              jsvArrayBufferIteratorSetIntegerValue(&it, accHistory[idx++]);
              jsvArrayBufferIteratorNext(&it);
              if (idx>=(int)sizeof(accHistory)) idx-=sizeof(accHistory);
            }
            jsvArrayBufferIteratorFree(&it);
            jsvUnLock(v);
            //jsiConsolePrintf("TF invoke\n");
            jswrap_tfmicrointerpreter_invoke(tf);
            //jsiConsolePrintf("TF out\n");
            v = jswrap_tfmicrointerpreter_getOutput(tf);
            JsVar *arr = jswrap_array_slice(v,0,0); // clone, so it's not referencing all of Tensorflow!
            jsvUnLock2(v,tf);
            //jsiConsolePrintf("TF queue\n");
            JsVar *gesture = jspExecuteJSFunction("(function(a) {"
              "var m=0,g;"
              "for (var i in a) if (a[i]>m) { m=a[i];g=i; }"
              "if (g!==undefined) {"
                "var n=require('Storage').read('.tfnames');"
                "if (n) g=n.split(',')[g];"
              "}"
            "return g;})",NULL,1,&arr);
            JsVar *args[2] = {gesture,arr};
            jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"aiGesture", args, 2);
            jsvUnLock2(gesture,arr);
          }
        }
      }
  #endif
    }
    if (bangleTasks & JSBT_CHARGE_EVENT) {
      JsVar *charging = jsvNewFromBool(wasCharging);
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"charging", &charging, 1);
      jsvUnLock(charging);
    }
    if (bangleTasks & JSBT_STEP_EVENT) {
      JsVar *steps = jsvNewFromInteger(stepCounter);
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"step", &steps, 1);
      jsvUnLock(steps);
    }
    if (bangleTasks & JSBT_TWIST_EVENT) {
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"twist", NULL, 0);
    }
    if (bangleTasks & JSBT_FACE_UP) {
      JsVar *v = jsvNewFromBool(faceUp);
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"faceUp", &v, 1);
      jsvUnLock(v);
      if (faceUp && (bangleFlags&JSBF_WAKEON_FACEUP)) {
        // LCD was turned off, turn it back on
        if (lcdPowerTimeout && !(bangleFlags&JSBF_LCD_ON))
          jswrap_banglejs_setLCDPower(1);
        if (backlightTimeout && !(bangleFlags&JSBF_LCD_BL_ON))
          jswrap_banglejs_setLCDPowerBacklight(1);
        if (lockTimeout && (bangleFlags&JSBF_LOCKED))
          jswrap_banglejs_setLocked(false);
        inactivityTimer = 0;
      }
    }
    if (bangleTasks & JSBT_SWIPE_MASK) {
      JsVar *o[2] = {
          jsvNewFromInteger((bangleTasks & JSBT_SWIPE_LEFT)?-1:((bangleTasks & JSBT_SWIPE_RIGHT)?1:0)),
          jsvNewFromInteger((bangleTasks & JSBT_SWIPE_UP)?-1:((bangleTasks & JSBT_SWIPE_DOWN)?1:0)),
      };
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"swipe", o, 2);
      jsvUnLockMany(2,o);
    }
    if (bangleTasks & JSBT_TOUCH_MASK) {
#ifdef TOUCH_I2C
      JsVar *o[2] = {
          jsvNewFromInteger(((bangleTasks & JSBT_TOUCH_LEFT)?1:0) |
                            ((bangleTasks & JSBT_TOUCH_RIGHT)?2:0)),
          jsvNewObject()
      };
      jsvObjectSetChildAndUnLock(o[1], "x", jsvNewFromInteger(lastTouchX));
      jsvObjectSetChildAndUnLock(o[1], "y", jsvNewFromInteger(lastTouchY));
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"touch", o, 2);
      jsvUnLockMany(2,o);
#else
      JsVar *o = jsvNewFromInteger(((bangleTasks & JSBT_TOUCH_LEFT)?1:0) |
                                   ((bangleTasks & JSBT_TOUCH_RIGHT)?2:0));
      jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"touch", &o, 1);
      jsvUnLock(o);
#endif
    }
  }
#ifdef TOUCH_I2C
  if (bangleTasks & JSBT_DRAG) {
    JsVar *o = jsvNewObject();
    jsvObjectSetChildAndUnLock(o, "x", jsvNewFromInteger(touchX));
    jsvObjectSetChildAndUnLock(o, "y", jsvNewFromInteger(touchY));
    jsvObjectSetChildAndUnLock(o, "b", jsvNewFromInteger(touchPts));
    jsvObjectSetChildAndUnLock(o, "dx", jsvNewFromInteger(lastTouchPts ? touchX-lastTouchX : 0));
    jsvObjectSetChildAndUnLock(o, "dy", jsvNewFromInteger(lastTouchPts ? touchY-lastTouchY : 0));
    jsiQueueObjectCallbacks(bangle, JS_EVENT_PREFIX"drag", &o, 1);
    jsvUnLock(o);
    lastTouchX = touchX;
    lastTouchY = touchY;
    lastTouchPts = touchPts;
  }
#endif
  jsvUnLock(bangle);
  bangleTasks = JSBT_NONE;
#if defined(LCD_CONTROLLER_LPM013M126) || defined(LCD_CONTROLLER_ST7789V) || defined(LCD_CONTROLLER_ST7735) || defined(LCD_CONTROLLER_GC9A01)
  // Automatically flip!
  JsVar *graphics = jsvObjectGetChild(execInfo.hiddenRoot, JS_GRAPHICS_VAR, 0);
  JsGraphics gfx;
  if (graphics && graphicsGetFromVar(&gfx, graphics)) {
    if (gfx.data.modMaxX >= gfx.data.modMinX) {
#ifdef LCD_CONTROLLER_LPM013M126
      lcdMemLCD_flip(&gfx);
#else
      lcdFlip_SPILCD(&gfx);
#endif
      graphicsSetVar(&gfx);
    }
  }
  jsvUnLock(graphics);
#endif
#ifdef ESPR_BACKLIGHT_FADE
  if (lcdFadeHandlerActive && realLcdBrightness == ((bangleFlags&JSBF_LCD_ON)?lcdBrightness:0)) {
    jstStopExecuteFn(backlightFadeHandler, NULL);
    lcdFadeHandlerActive = false;
    if (!(bangleFlags&JSBF_LCD_ON)) jswrap_banglejs_setLCDPowerController(0);
  }
#endif
  // resolve any beep/buzz promises
  if (promiseBuzz && !buzzAmt) {
    jspromise_resolve(promiseBuzz, 0);
    jsvUnLock(promiseBuzz);
    promiseBuzz = 0;
  }
  if (promiseBeep && !beepFreq) {
    jspromise_resolve(promiseBeep, 0);
    jsvUnLock(promiseBeep);
    promiseBeep = 0;
  }

  return false;
}

/*JSON{
  "type" : "EV_SERIAL1",
  "generate" : "jswrap_banglejs_gps_character",
  "#if" : "defined(BANGLEJS_F18) || defined(DTNO1_F5)  || defined(BANGLEJS_Q3)"
}*/
bool jswrap_banglejs_gps_character(char ch) {
#ifdef GPS_PIN_RX
  // if too many chars, roll over since it's probably because we skipped a newline
  // or messed the message length
  if (ubloxInLength >= sizeof(ubloxIn)) {
    if (inComingUbloxProtocol == UBLOX_PROTOCOL_UBX &&
        ubloxMsgPayloadEnd > ubloxInLength) {
      if (bangleTasks & (JSBT_GPS_DATA_PARTIAL|JSBT_GPS_DATA_LINE)) {
        // we were already waiting to post data, so lets not overwrite it
        bangleTasks |= JSBT_GPS_DATA_OVERFLOW;
      } else {
        memcpy(ubloxMsg, ubloxIn, ubloxInLength);
        ubloxMsgLength = ubloxInLength;
        bangleTasks |= JSBT_GPS_DATA_PARTIAL;
      }
      ubloxMsgPayloadEnd -= ubloxInLength;
      ubloxInLength = 0;
    } else
      resetUbloxIn();
  }
  if (inComingUbloxProtocol == UBLOX_PROTOCOL_NOT_DETECTED) {
    ubloxInLength = 0;
    if (ch == '$') {
      inComingUbloxProtocol = UBLOX_PROTOCOL_NMEA;
    } else if (ch == 0xB5) {
      inComingUbloxProtocol = UBLOX_PROTOCOL_UBX;
      ubloxMsgPayloadEnd = 0;
    }
  }
  ubloxIn[ubloxInLength++] = ch;
  if (inComingUbloxProtocol == UBLOX_PROTOCOL_NMEA && ch == '\n') {
    // Now we have a line of GPS data...
    /*$GNRMC,161945.00,A,5139.11397,N,00116.07202,W,1.530,,190919,,,A*7E
      $GNVTG,,T,,M,1.530,N,2.834,K,A*37
      $GNGGA,161945.00,5139.11397,N,00116.07202,W,1,06,1.29,71.1,M,47.0,M,,*64
      $GNGSA,A,3,09,06,23,07,03,29,,,,,,,1.96,1.29,1.48*14
      $GPGSV,3,1,12,02,45,293,13,03,10,109,16,05,13,291,,06,56,213,25*73
      $GPGSV,3,2,12,07,39,155,18,09,76,074,33,16,08,059,,19,02,218,18*7E
      $GPGSV,3,3,12,23,40,066,23,26,08,033,18,29,07,342,20,30,14,180,*7F
      $GNGLL,5139.11397,N,00116.07202,W,161945.00,A,A*69 */
    // Let's just chuck it over into JS-land for now
    if (ubloxInLength > 2 && ubloxInLength <= NMEA_MAX_SIZE && ubloxIn[ubloxInLength - 2] =='\r') {
      ubloxIn[ubloxInLength - 2] = 0; // just overwriting \r\n
      ubloxIn[ubloxInLength - 1] = 0;
      if (nmea_decode(&gpsFix, (char *)ubloxIn))
        bangleTasks |= JSBT_GPS_DATA;
      if (bangleTasks & (JSBT_GPS_DATA_PARTIAL|JSBT_GPS_DATA_LINE)) {
        // we were already waiting to post data, so lets not overwrite it
        bangleTasks |= JSBT_GPS_DATA_OVERFLOW;
      } else {
        memcpy(ubloxMsg, ubloxIn, ubloxInLength);
        ubloxMsgLength = ubloxInLength - 2;
        bangleTasks |= JSBT_GPS_DATA_LINE;
      }
    }
    resetUbloxIn();
  } else if (inComingUbloxProtocol == UBLOX_PROTOCOL_UBX) {
    if (!ubloxMsgPayloadEnd) {
      if (ubloxInLength == 2 && ch != 0x62) { // Invalid u-blox protocol message, missing header second byte
        resetUbloxIn();
      } else if (ubloxInLength == 6) {
        // Header: 0xB5 0x62, Class: 1 byte, ID: 1 byte, Length: 2 bytes, data..., CRC: 2 bytes
        ubloxMsgPayloadEnd = 6 + ((ubloxIn[5] << 8) | ubloxIn[4]) + 2;
        if (ubloxMsgPayloadEnd < ubloxInLength) { // Length is some odd way horribly wrong
          resetUbloxIn();
        }
      }
    } else if (ubloxInLength >= ubloxMsgPayloadEnd) {
      if (bangleTasks & (JSBT_GPS_DATA_PARTIAL|JSBT_GPS_DATA_LINE)) {
        // we were already waiting to post data, so lets not overwrite it
        bangleTasks |= JSBT_GPS_DATA_OVERFLOW;
      } else {
        memcpy(ubloxMsg, ubloxIn, ubloxInLength);
        ubloxMsgLength = ubloxInLength;
        bangleTasks |= JSBT_GPS_DATA_LINE;
      }
      resetUbloxIn();
    }
  }
#endif
  return true; // handled
}

/*JSON{
    "type" : "staticproperty",
    "class" : "Bangle",
    "name" : "F_BEEPSET",
    "generate_full" : "true",
    "return" : ["bool",""],
    "ifdef" : "BANGLEJS"
}
Feature flag - If true, this Bangle.js firmware reads `setting.json` and
modifies beep & buzz behaviour accordingly (the bootloader
doesn't need to do it).
*/

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "dbg",
    "generate" : "jswrap_banglejs_dbg",
    "return" : ["JsVar",""],
    "ifdef" : "BANGLEJS"
}
Reads debug info
*/
JsVar *jswrap_banglejs_dbg() {
  JsVar *o = jsvNewObject();
  if (!o) return 0;
  jsvObjectSetChildAndUnLock(o,"accHistoryIdx",jsvNewFromInteger(accHistoryIdx));
  jsvObjectSetChildAndUnLock(o,"accGestureCount",jsvNewFromInteger(accGestureCount));
  jsvObjectSetChildAndUnLock(o,"accIdleCount",jsvNewFromInteger(accIdleCount));
  return o;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "accelWr",
    "generate" : "jswrap_banglejs_accelWr",
    "params" : [
      ["reg","int",""],
      ["data","int",""]
    ],
    "ifdef" : "BANGLEJS"
}
Writes a register on the accelerometer
*/
void jswrap_banglejs_accelWr(JsVarInt reg, JsVarInt data) {
#ifdef ACCEL_I2C
  unsigned char buf[2];
  buf[0] = (unsigned char)reg;
  buf[1] = (unsigned char)data;
  i2cBusy = true;
  jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 2, buf, true);
  i2cBusy = false;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "accelRd",
    "generate" : "jswrap_banglejs_accelRd",
    "params" : [
      ["reg","int",""],
      ["cnt","int","If specified, `accelRd` returns an array of the given length (max 128). If not (or 0) it returns a number"]
    ],
    "return" : ["JsVar",""],
    "ifdef" : "BANGLEJS"
}
Reads a register from the accelerometer

**Note:** On Espruino 2v06 and before this function only returns a number (`cnt` is ignored).
*/
JsVar *jswrap_banglejs_accelRd(JsVarInt reg, JsVarInt cnt) {
#ifdef ACCEL_I2C
  if (cnt<0) cnt=0;
  unsigned char buf[128];
  if (cnt>(int)sizeof(buf)) cnt=sizeof(buf);
  buf[0] = (unsigned char)reg;
  i2cBusy = true;
  jsi2cWrite(ACCEL_I2C, ACCEL_ADDR, 1, buf, false);
  jsi2cRead(ACCEL_I2C, ACCEL_ADDR, (cnt==0)?1:cnt, buf, true);
  i2cBusy = false;
  if (cnt) {
    JsVar *ab = jsvNewArrayBufferWithData(cnt, buf);
    JsVar *d = jswrap_typedarray_constructor(ARRAYBUFFERVIEW_UINT8, ab,0,0);
    jsvUnLock(ab);
    return d;
  } else return jsvNewFromInteger(buf[0]);
#else
  return 0;
#endif
}


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "barometerWr",
    "generate" : "jswrap_banglejs_barometerWr",
    "params" : [
      ["reg","int",""],
      ["data","int",""]
    ],
    "#if" : "defined(DTNO1_F5) || defined(BANGLEJS_Q3) || defined(DICKENS)"
}
Writes a register on the barometer IC
*/
void jswrap_banglejs_barometerWr(JsVarInt reg, JsVarInt data) {
#ifdef PRESSURE_I2C
  unsigned char buf[2];
  buf[0] = (unsigned char)reg;
  buf[1] = (unsigned char)data;
  i2cBusy = true;
  jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 2, buf, true);
  i2cBusy = false;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "barometerRd",
    "generate" : "jswrap_banglejs_barometerRd",
    "params" : [
      ["reg","int",""],
      ["cnt","int","If specified, `barometerRd` returns and array of the given length (max 48). If not (or 0) it returns a number"]
    ],
    "return" : ["JsVar",""],
    "#if" : "defined(DTNO1_F5) || defined(BANGLEJS_Q3) || defined(DICKENS)"
}
Reads a register from the barometer IC
*/
JsVar *jswrap_banglejs_barometerRd(JsVarInt reg, JsVarInt cnt) {
#ifdef PRESSURE_I2C
  if (cnt<0) cnt=0;
  unsigned char buf[48];
  if (cnt>(int)sizeof(buf)) cnt=sizeof(buf);
  buf[0] = (unsigned char)reg;
  i2cBusy = true;
  jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false);
  jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, (cnt==0)?1:cnt, buf, true);
  i2cBusy = false;
  if (cnt) {
    JsVar *ab = jsvNewArrayBufferWithData(cnt, buf);
    JsVar *d = jswrap_typedarray_constructor(ARRAYBUFFERVIEW_UINT8, ab,0,0);
    jsvUnLock(ab);
    return d;
  } else return jsvNewFromInteger(buf[0]);
#else
  return 0;
#endif
}


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "compassWr",
    "generate" : "jswrap_banglejs_compassWr",
    "params" : [
      ["reg","int",""],
      ["data","int",""]
    ],
    "ifdef" : "BANGLEJS"
}
Writes a register on the Magnetometer/Compass
*/
void jswrap_banglejs_compassWr(JsVarInt reg, JsVarInt data) {
#ifdef MAG_I2C
  unsigned char buf[2];
  buf[0] = (unsigned char)reg;
  buf[1] = (unsigned char)data;
  i2cBusy = true;
  jsi2cWrite(MAG_I2C, MAG_ADDR, 2, buf, true);
  i2cBusy = false;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "ioWr",
    "generate" : "jswrap_banglejs_ioWr",
    "params" : [
      ["mask","int",""],
      ["isOn","int",""]
    ],
    "ifdef" : "BANGLEJS_F18"
}
Changes a pin state on the IO expander
*/
#ifdef BANGLEJS_F18
void jswrap_banglejs_ioWr(JsVarInt mask, bool on) {
#ifndef EMULATED
  static unsigned char state;
  if (on) state |= mask;
  else state &= ~mask;
  i2cBusy = true;
  jsi2cWrite(&i2cInternal, 0x20, 1, &state, true);
  i2cBusy = false;
#endif
}
#endif


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getPressure",
    "generate" : "jswrap_banglejs_getPressure",
    "return" : ["JsVar","A promise that will be resolved with `{temperature, pressure, altitude}`"],
    "#if" : "defined(DTNO1_F5) || defined(BANGLEJS_Q3) || defined(DICKENS)"
}
Read temperature, pressure and altitude data. A promise is returned
which will be resolved with `{temperature, pressure, altitude}`.

Conversions take roughly 100ms.  Altitude assumes a sea-level pressure of 1013.25 hPa

```
Bangle.getPressure().then(d=>{
  console.log(d);
  // {temperature, pressure, altitude}
});
```
*/


bool jswrap_banglejs_barometerPoll() {
#ifdef PRESSURE_DEVICE_HP203
  unsigned char buf[6];
  // ADC_CVT - 0b010 01 000  - pressure and temperature channel, OSR = 4096
  buf[0] = 0x48; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, true);
  // wait 100ms
  jshDelayMicroseconds(100*1000); // we should really have a callback
  // READ_PT
  buf[0] = 0x10; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false);
  jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, 6, buf, true);
  int temperature = (buf[0]<<16)|(buf[1]<<8)|buf[2];
  if (temperature&0x800000) temperature-=0x1000000;
  int pressure = (buf[3]<<16)|(buf[4]<<8)|buf[5];
  barometerTemperature = temperature/100.0;
  barometerPressure = pressure/100.0;

  buf[0] = 0x31; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false); // READ_A
  jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, 3, buf, true);
  int altitude = (buf[0]<<16)|(buf[1]<<8)|buf[2];
  if (altitude&0x800000) altitude-=0x1000000;
  barometerAltitude = altitude/100.0;
  return true;
#endif
#ifdef PRESSURE_DEVICE_SPL06_007
  static int oversample_scalefactor[] = {524288, 1572864, 3670016, 7864320, 253952, 516096, 1040384, 2088960};
  unsigned char buf[6];

  // status values
  buf[0] = SPL06_MEASCFG; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false);
  jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, true);
  int status = buf[0];
  if ((status & 0b00110000) != 0b00110000) {
    // data hasn't arrived yet
    return false;
  }

  // raw values
  buf[0] = SPL06_PRSB2; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false);
  jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, 6, buf, true);
  int praw = (buf[0]<<16)|(buf[1]<<8)|buf[2];
  praw = twosComplement(praw, 24);
  int traw = (buf[3]<<16)|(buf[4]<<8)|buf[5];
  traw = twosComplement(traw, 24);

  double traw_scaled = (double)traw / oversample_scalefactor[SPL06_8SAMPLES]; // temperature oversample by 8x
  double praw_scaled = (double)praw / oversample_scalefactor[SPL06_8SAMPLES]; // pressure oversample by 8x
  barometerTemperature = (barometer_c0/2) + (barometer_c1*traw_scaled);
  double pressurePa = (barometer_c00 + praw_scaled * (barometer_c10 + praw_scaled * (barometer_c20 + praw_scaled * barometer_c30)) +
                     traw_scaled * barometer_c01 +
                     traw_scaled * praw_scaled * ( barometer_c11 + praw_scaled * barometer_c21));
  barometerPressure = pressurePa / 100; // convert Pa to hPa/millibar
  double seaLevelPressure = 1013.25; // Standard atmospheric pressure
  barometerAltitude = 44330 * (1.0 - jswrap_math_pow(barometerPressure / seaLevelPressure, 0.1903));
  // TODO: temperature corrected altitude?
  return true;
#endif
#ifdef PRESSURE_DEVICE_BMP280
  unsigned char buf[8];
  buf[0] = 0xF7; jsi2cWrite(PRESSURE_I2C, PRESSURE_ADDR, 1, buf, false); // READ_A
  jsi2cRead(PRESSURE_I2C, PRESSURE_ADDR, 6, buf, true);
  int uncomp_pres = (buf[0] << 12) | (buf[1] << 4) | (buf[2] >> 4);
  int uncomp_temp = (buf[3] << 12) | (buf[4] << 4) | (buf[5] >> 4);
  double var1, var2;
  // temperature
  var1 = (((double) uncomp_temp) / 16384.0 - ((double) barometerDT[0]) / 1024.0) *
         ((double) barometerDT[1]);
  var2 =
      ((((double) uncomp_temp) / 131072.0 - ((double) barometerDT[0]) / 8192.0) *
       (((double) uncomp_temp) / 131072.0 - ((double) barometerDT[0]) / 8192.0)) *
      ((double) barometerDT[2]);
  int32_t t_fine = (int32_t) (var1 + var2);
  barometerTemperature = ((var1 + var2) / 5120.0);
  // pressure
  var1 = ((double) t_fine / 2.0) - 64000.0;
  var2 = var1 * var1 * ((double) barometerDP[5]) / 32768.0;
  var2 = var2 + var1 * ((double) barometerDP[4]) * 2.0;
  var2 = (var2 / 4.0) + (((double) barometerDP[3]) * 65536.0);
  var1 = (((double)barometerDP[2]) * var1 * var1 / 524288.0 + ((double)barometerDP[1]) * var1) /
        524288.0;
  var1 = (1.0 + var1 / 32768.0) * ((double) barometerDP[0]);

  barometerPressure = 1048576.0 - (double)uncomp_pres;
  if (var1 < 0 || var1 > 0) {
    barometerPressure = (barometerPressure - (var2 / 4096.0)) * 6250.0 / var1;
    var1 = ((double)barometerDP[8]) * (barometerPressure) * (barometerPressure) / 2147483648.0;
    var2 = (barometerPressure) * ((double)barometerDP[7]) / 32768.0;
    barometerPressure = barometerPressure + (var1 + var2 + ((double)barometerDP[6])) / 16.0;
    barometerPressure = barometerPressure/100.0;
  } else {
    barometerPressure = 0;
  }

  double seaLevelPressure = 1013.25; // Standard atmospheric pressure
  barometerAltitude = 44330 * (1.0 - jswrap_math_pow(barometerPressure / seaLevelPressure, 0.1903));
  // TODO: temperature corrected altitude?
  return true;
#endif

  return false;
}

#ifdef PRESSURE_I2C
JsVar *jswrap_banglejs_getBarometerObject() {
  JsVar *o = jsvNewObject();
  if (o) {
    jsvObjectSetChildAndUnLock(o,"temperature", jsvNewFromFloat(barometerTemperature));
    jsvObjectSetChildAndUnLock(o,"pressure", jsvNewFromFloat(barometerPressure));
    jsvObjectSetChildAndUnLock(o,"altitude", jsvNewFromFloat(barometerAltitude));
  }
  return o;
}

void jswrap_banglejs_getPressure_callback() {
  JsVar *o = 0;
  i2cBusy = true;
  if (jswrap_banglejs_barometerPoll()) {
    o = jswrap_banglejs_getBarometerObject();
    // disable sensor now we have a result
    JsVar *id = jsvNewFromString("getPressure");
    jswrap_banglejs_setBarometerPower(0, id);
    jsvUnLock(id);
  }
  i2cBusy = false;
  jspromise_resolve(promisePressure, o);
  jsvUnLock2(promisePressure,o);
  promisePressure = 0;
}
#endif

JsVar *jswrap_banglejs_getPressure() {
#ifdef PRESSURE_I2C
  if (promisePressure) {
    jsExceptionHere(JSET_ERROR, "Conversion in progress");
    return 0;
  }
  promisePressure = jspromise_create();
  if (!promisePressure) return 0;

  // If barometer is already on, just resolve promise with the current result
  if (bangleFlags & JSBF_BAROMETER_ON) {
    JsVar *o = jswrap_banglejs_getBarometerObject();
    jspromise_resolve(promisePressure, o);
    jsvUnLock(o);
    JsVar *r = promisePressure;
    promisePressure = 0;
    return r;
  }

  JsVar *id = jsvNewFromString("getPressure");
  jswrap_banglejs_setBarometerPower(1, id);
  jsvUnLock(id);
  jsvUnLock(jsiSetTimeout(jswrap_banglejs_getPressure_callback, 500));
  return jsvLockAgain(promisePressure);
#else
  return 0;
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "project",
    "generate" : "jswrap_banglejs_project",
    "params" : [
      ["latlong","JsVar","`{lat:..., lon:...}`"]
    ],
    "return" : ["JsVar","{x:..., y:...}"],
    "ifdef" : "BANGLEJS"
}
Perform a Spherical [Web Mercator projection](https://en.wikipedia.org/wiki/Web_Mercator_projection)
of latitude and longitude into `x` and `y` coordinates, which are roughly
equivalent to meters from `{lat:0,lon:0}`.

This is the formula used for most online mapping and is a good way
to compare GPS coordinates to work out the distance between them.
*/
JsVar *jswrap_banglejs_project(JsVar *latlong) {
  const double degToRad = PI / 180; // degree to radian conversion
  const double latMax = 85.0511287798; // clip latitude to sane values
  const double R = 6378137; // earth radius in m
  double lat = jsvGetFloatAndUnLock(jsvObjectGetChild(latlong,"lat",0));
  double lon = jsvGetFloatAndUnLock(jsvObjectGetChild(latlong,"lon",0));
  if (lat > latMax) lat=latMax;
  if (lat < -latMax) lat=-latMax;
  double s = sin(lat * degToRad);
  JsVar *o = jsvNewObject();
  if (o) {
    jsvObjectSetChildAndUnLock(o,"x", jsvNewFromFloat(R * lon * degToRad));
    jsvObjectSetChildAndUnLock(o,"y", jsvNewFromFloat(R * log((1 + s) / (1 - s)) / 2));
  }
  return o;
}


static NO_INLINE void _jswrap_banglejs_setVibration() {
  int beep = 0;
  if (bangleFlags & JSBF_BEEP_VIBRATE)
    beep = beepFreq;

  if (buzzAmt==0 && beep==0)
    jshPinOutput(VIBRATE_PIN,0); // vibrate off
  else if (beep==0) { // vibrate only
    jshPinAnalogOutput(VIBRATE_PIN, 0.4 + buzzAmt*0.6/255, 1000, JSAOF_NONE);
  } else { // beep and vibrate
    jshPinAnalogOutput(VIBRATE_PIN, 0.2 + buzzAmt*0.6/255, beep, JSAOF_NONE);
  }
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "beep",
    "generate" : "jswrap_banglejs_beep",
    "params" : [
      ["time","int","Time in ms (default 200)"],
      ["freq","int","Frequency in hz (default 4000)"]
    ],
    "return" : ["JsVar","A promise, completed when beep is finished"],
    "return_object":"Promise",
    "ifdef" : "BANGLEJS"
}
Use the piezo speaker to Beep for a certain time period and frequency
*/
void jswrap_banglejs_beep_callback() {
  beepFreq = 0;
  if (bangleFlags & JSBF_BEEP_VIBRATE) {
    _jswrap_banglejs_setVibration();
  } else {
#ifdef SPEAKER_PIN
    jshPinSetState(SPEAKER_PIN, JSHPINSTATE_GPIO_IN);
#endif
  }
  jshHadEvent();
}

JsVar *jswrap_banglejs_beep(int time, int freq) {
  if (freq<=0) freq=4000;
  if (freq>60000) freq=60000;
  if (time<=0) time=200;
  if (time>5000) time=5000;
  if (promiseBeep) {
    JsVar *fn = jsvNewNativeFunction((void (*)(void))jswrap_banglejs_beep, JSWAT_JSVAR|(JSWAT_INT32<<JSWAT_BITS)|(JSWAT_INT32<<(JSWAT_BITS*2)));
    JsVar *v;
    v=jsvNewFromInteger(time);jsvAddFunctionParameter(fn, 0, v);jsvUnLock(v); // bind param 1
    v=jsvNewFromInteger(freq);jsvAddFunctionParameter(fn, 0, v);jsvUnLock(v); // bind param 2
    JsVar *promise = jswrap_promise_then(promiseBeep, fn, NULL);
    jsvUnLock(fn);
    return promise;
  }
  promiseBeep = jspromise_create();
  if (!promiseBeep) return 0;

  if (bangleFlags & JSBF_ENABLE_BEEP) {
    beepFreq = freq;
    if (bangleFlags & JSBF_BEEP_VIBRATE) {
      _jswrap_banglejs_setVibration();
    } else {
#ifdef SPEAKER_PIN
      jshPinAnalogOutput(SPEAKER_PIN, 0.5, freq, JSAOF_NONE);
#endif
    }
  }
  jstExecuteFn(jswrap_banglejs_beep_callback, NULL, jshGetSystemTime()+jshGetTimeFromMilliseconds(time), 0);
  return jsvLockAgain(promiseBeep);
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "buzz",
    "generate" : "jswrap_banglejs_buzz",
    "params" : [
      ["time","int","Time in ms (default 200)"],
      ["strength","float","Power of vibration from 0 to 1 (Default 1)"]
    ],
    "return" : ["JsVar","A promise, completed when vibration is finished"],
    "return_object":"Promise",
    "ifdef" : "BANGLEJS"
}
Use the vibration motor to buzz for a certain time period
*/
void jswrap_banglejs_buzz_callback() {
  buzzAmt = 0;
  _jswrap_banglejs_setVibration();
  jshHadEvent();
}

JsVar *jswrap_banglejs_buzz(int time, JsVarFloat amt) {
  if (!isfinite(amt)|| amt>1) amt=1;
  if (amt<0) amt=0;
  if (time<=0) time=200;
  if (time>5000) time=5000;
  if (promiseBuzz) {
    JsVar *fn = jsvNewNativeFunction((void (*)(void))jswrap_banglejs_buzz, JSWAT_JSVAR|(JSWAT_INT32<<JSWAT_BITS)|(JSWAT_JSVARFLOAT<<(JSWAT_BITS*2)));
    JsVar *v;
    v=jsvNewFromInteger(time);jsvAddFunctionParameter(fn, 0, v);jsvUnLock(v); // bind param 1
    v=jsvNewFromFloat(amt);jsvAddFunctionParameter(fn, 0, v);jsvUnLock(v); // bind param 2
    JsVar *promise = jswrap_promise_then(promiseBuzz, fn, NULL);
    jsvUnLock(fn);
    return promise;
  }
  promiseBuzz = jspromise_create();
  if (!promiseBuzz) return 0;

  if (bangleFlags & JSBF_ENABLE_BUZZ) {
    buzzAmt = (unsigned char)(amt*255);
    _jswrap_banglejs_setVibration();
  }

  jstExecuteFn(jswrap_banglejs_buzz_callback, NULL, jshGetSystemTime()+jshGetTimeFromMilliseconds(time), 0);
  return jsvLockAgain(promiseBuzz);
}

static void jswrap_banglejs_periph_off() {
#ifndef EMULATED
#ifdef HEARTRATE
  jswrap_banglejs_pwrHRM(false); // HRM off
#endif
#ifdef GPS_PIN_RX
  jswrap_banglejs_pwrGPS(false); // GPS off
#endif
  jshPinOutput(VIBRATE_PIN,0); // vibrate off
  //jswrap_banglejs_setLCDPower calls JS events (and sometimes timers), so avoid it and manually turn controller + backlight off:
  jswrap_banglejs_setLCDPowerController(0);
  jswrap_banglejs_pwrBacklight(0);
#ifdef ACCEL_DEVICE_KX023
  jswrap_banglejs_accelWr(0x18,0x0a); // accelerometer off
#endif
#ifdef ACCEL_DEVICE_KXTJ3_1057
  jswrap_banglejs_accelWr(0x1B,0); // accelerometer off
#endif
#ifdef ACCEL_DEVICE_KX126
  jswrap_banglejs_accelWr(KX126_CNTL1,0); // CNTL1 Off (top bit)
#endif
#ifdef MAG_DEVICE_GMC303
  jswrap_banglejs_compassWr(0x31,0); // compass off
#endif
#ifdef PRESSURE_DEVICE_SPL06_007
  jswrap_banglejs_barometerWr(SPL06_MEASCFG, 0); // Barometer off
#endif
#ifdef PRESSURE_DEVICE_BMP280
  jswrap_banglejs_barometerWr(0xF4, 0); // Barometer off
#endif


#ifdef BTN2_PININDEX
  nrf_gpio_cfg_sense_set(pinInfo[BTN2_PININDEX].pin, NRF_GPIO_PIN_NOSENSE);
#endif
#ifdef BTN3_PININDEX
  nrf_gpio_cfg_sense_set(pinInfo[BTN3_PININDEX].pin, NRF_GPIO_PIN_NOSENSE);
#endif
#ifdef BTN4_PININDEX
  nrf_gpio_cfg_sense_set(pinInfo[BTN4_PININDEX].pin, NRF_GPIO_PIN_NOSENSE);
#endif

  jsiKill();
  jsvKill();
  jshKill();

  /* The low power pin watch code (nrf_drv_gpiote_in_init) somehow causes
  the sensing to be disabled such that nrf_gpio_cfg_sense_set(pin, NRF_GPIO_PIN_SENSE_LOW)
  no longer works. To work around this we just call our standard pin watch function
  to re-enable everything. */
  jshPinWatch(BTN1_PININDEX, true);
  nrf_gpio_cfg_sense_set(pinInfo[BTN1_PININDEX].pin, NRF_GPIO_PIN_SENSE_LOW);
#else
  jsExceptionHere(JSET_ERROR, ".off not implemented on emulator");
#endif

}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "off",
    "generate" : "jswrap_banglejs_off",
    "ifdef" : "BANGLEJS"
}
Turn Bangle.js off. It can only be woken by pressing BTN1.
*/
void jswrap_banglejs_off() {
#ifndef EMULATED
  // If BTN1 is pressed wait until it is released
  while (jshPinGetValue(BTN1_PININDEX));
  // turn peripherals off
  jswrap_banglejs_periph_off();
  // system off
  sd_power_system_off();
  while(1);
#else
  jsExceptionHere(JSET_ERROR, ".off not implemented on emulator");
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "softOff",
    "generate" : "jswrap_banglejs_softOff",
    "ifdef" : "BANGLEJS"
}
Turn Bangle.js (mostly) off, but keep the CPU in sleep
mode until BTN1 is pressed to preserve the RTC (current time).
*/
void jswrap_banglejs_softOff() {
#ifndef EMULATED
  // If BTN1 is pressed wait until it is released
  while (jshPinGetValue(BTN1_PININDEX));
  // turn BLE and peripherals off
  jswrap_ble_sleep();
  jswrap_banglejs_periph_off();
  jshDelayMicroseconds(100000); // wait 100ms for any button bounce to disappear
  IOEventFlags channel = jshPinWatch(BTN1_PININDEX, true);
  if (channel!=EV_NONE) jshSetEventCallback(channel, (JshEventCallbackCallback)jshHadEvent);
  // keep sleeping until a button is pressed
  jshKickWatchDog();
  do {
  // sleep until BTN1 pressed
  while (!jshPinGetValue(BTN1_PININDEX)) {
    jshKickWatchDog();
    jshSleep(jshGetTimeFromMilliseconds(4*1000));
  }
    // wait for button to be pressed for at least 200ms
    int timeout = 200;
    while (jshPinGetValue(BTN1_PININDEX) && timeout--)
      nrf_delay_ms(1);
    // if button not pressed, keep sleeping
  } while (!jshPinGetValue(BTN1_PININDEX));
  // restart
  jshReboot();

#else
  jsExceptionHere(JSET_ERROR, ".off not implemented on emulator");
#endif
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "getLogo",
    "generate" : "jswrap_banglejs_getLogo",
    "return" : ["JsVar", "An image to be used with `g.drawImage` (as a String)" ],
    "ifdef" : "BANGLEJS"
}

* On platforms with an LCD of >=8bpp this is 222 x 104 x 2 bits
* Otherwise it's 119 x 56 x 1 bits
*/
JsVar *jswrap_banglejs_getLogo() {
#if LCD_BPP>=8
  const unsigned char img_compressed[1419] = { // 222 x 104 x 2 bits
      239, 90, 32, 66, 218, 160, 95, 240, 0, 127, 211, 46, 19, 241, 184, 159, 1,
          181, 240, 177, 176, 159, 243, 118, 3, 97, 126, 131, 107, 225, 227,
          113, 112, 6, 237, 127, 6, 239, 205, 214, 255, 13, 219, 112, 6, 215,
          64, 77, 219, 71, 205, 218, 192, 141, 219, 75, 198, 226, 244, 6, 215,
          64, 198, 194, 255, 77, 215, 207, 198, 226, 248, 13, 218, 255, 141,
          219, 124, 13, 218, 255, 205, 215, 223, 205, 218, 194, 205, 219, 13,
          134, 252, 13, 174, 143, 141, 198, 224, 13, 173, 129, 13, 134, 254,
          138, 31, 131, 96, 1, 198, 75, 198, 227, 116, 6, 239, 239, 1, 166, 65,
          198, 32, 255, 178, 182, 160, 32, 67, 103, 225, 108, 115, 20, 161, 120,
          0, 193, 91, 212, 208, 155, 141, 27, 2, 181, 18, 55, 255, 252, 228, 0,
          160, 195, 213, 193, 80, 13, 210, 95, 198, 194, 133, 65, 24, 8, 230,
          12, 110, 185, 184, 200, 248, 216, 96, 64, 74, 112, 161, 254, 173, 86,
          253, 204, 185, 184, 200, 63, 255, 160, 9, 26, 95, 255, 250, 1, 1, 252,
          15, 194, 1, 132, 110, 130, 3, 255, 248, 2, 5, 136, 43, 194, 39, 131,
          15, 61, 133, 47, 36, 14, 110, 110, 255, 252, 3, 139, 15, 32, 132, 10,
          8, 212, 30, 252, 221, 20, 61, 150, 52, 7, 193, 0, 129, 185, 194, 55,
          7, 3, 64, 12, 110, 110, 4, 154, 8, 0, 36, 241, 172, 23, 244, 220, 44,
          190, 128, 110, 134, 254, 91, 26, 30, 43, 8, 22, 17, 184, 56, 8, 236,
          51, 115, 208, 243, 16, 74, 81, 143, 65, 13, 1, 25, 6, 59, 12, 220,
          240, 168, 20, 144, 202, 80, 136, 97, 155, 167, 159, 169, 70, 133, 143,
          131, 6, 4, 221, 154, 22, 165, 40, 246, 25, 184, 56, 25, 40, 99, 115,
          109, 0, 148, 164, 40, 193, 254, 27, 132, 191, 141, 149, 55, 23, 47,
          250, 41, 74, 128, 111, 248, 6, 224, 225, 253, 3, 115, 85, 172, 128,
          40, 56, 31, 253, 74, 80, 52, 31, 241, 184, 56, 57, 200, 51, 114, 208,
          31, 255, 252, 58, 36, 252, 180, 50, 148, 67, 224, 63, 3, 112, 80, 177,
          224, 32, 0, 226, 213, 0, 48, 145, 84, 56, 144, 27, 73, 184, 109, 248,
          220, 21, 0, 112, 182, 120, 42, 82, 137, 128, 187, 65, 0, 4, 74, 16,
          64, 15, 210, 22, 8, 7, 240, 6, 5, 16, 28, 28, 40, 14, 2, 124, 110, 14,
          255, 249, 131, 4, 4, 255, 172, 67, 82, 142, 215, 7, 233, 15, 27, 134,
          12, 14, 254, 87, 11, 122, 16, 4, 188, 17, 20, 33, 176, 95, 252, 31,
          128, 220, 16, 128, 18, 128, 73, 16, 64, 224, 178, 70, 82, 138, 69, 7,
          1, 254, 213, 106, 133, 64, 138, 66, 151, 255, 168, 223, 254, 216, 28,
          31, 255, 250, 173, 255, 68, 130, 134, 7, 203, 91, 255, 27, 131, 129,
          139, 130, 128, 177, 67, 75, 130, 165, 41, 176, 22, 124, 150, 20, 8,
          82, 20, 44, 64, 8, 176, 19, 112, 76, 80, 96, 108, 128, 175, 228, 0,
          97, 104, 64, 77, 193, 111, 214, 65, 252, 0, 96, 199, 192, 97, 0, 3,
          176, 1, 133, 77, 130, 126, 14, 7, 253, 29, 2, 2, 4, 124, 17, 184, 36,
          136, 64, 80, 99, 235, 112, 163, 230, 80, 77, 192, 195, 218, 129, 203,
          203, 64, 134, 129, 23, 138, 0, 26, 6, 252, 8, 234, 25, 48, 27, 249,
          252, 40, 88, 236, 17, 152, 64, 160, 83, 130, 1, 129, 55, 5, 1, 106, 8,
          127, 10, 94, 110, 22, 30, 55, 26, 126, 110, 16, 12, 13, 2, 30, 96, 8,
          56, 8, 208, 17, 16, 80, 50, 32, 64, 192, 154, 129, 27, 129, 159, 139,
          4, 57, 130, 110, 29, 88, 49, 184, 104, 8, 180, 17, 120, 64, 0, 77,
          193, 37, 130, 21, 130, 116, 12, 8, 9, 184, 32, 248, 64, 0, 152, 33,
          27, 134, 0, 14, 110, 24, 90, 12, 125, 90, 32, 184, 16, 112, 80, 33,
          16, 36, 65, 47, 198, 224, 198, 226, 34, 129, 110, 147, 80, 55, 21, 0,
          222, 138, 194, 0, 5, 125, 32, 2, 14, 10, 95, 0, 34, 9, 3, 55, 7, 250,
          213, 0, 2, 212, 183, 74, 223, 179, 131, 55, 14, 34, 5, 140, 36, 12,
          220, 52, 7, 232, 13, 14, 124, 221, 28, 0, 19, 116, 137, 116, 124, 220,
          92, 250, 6, 78, 18, 122, 110, 26, 95, 64, 55, 14, 212, 28, 220, 60,
          13, 250, 17, 185, 136, 17, 185, 8, 9, 184, 121, 224, 24, 72, 57, 184,
          107, 241, 184, 216, 249, 184, 114, 0, 166, 112, 205, 195, 64, 76, 194,
          56, 193, 244, 129, 196, 133, 244, 19, 2, 1, 129, 55, 10, 5, 12, 220,
          44, 125, 42, 28, 80, 6, 17, 120, 83, 112, 48, 112, 208, 144, 255, 193,
          124, 48, 0, 63, 194, 48, 191, 211, 112, 208, 241, 104, 112, 115, 112,
          65, 16, 142, 225, 26, 130, 135, 255, 13, 194, 192, 32, 200, 1, 63,
          244, 1, 120, 146, 252, 0, 164, 72, 249, 184, 125, 240, 80, 63, 241,
          184, 40, 58, 116, 61, 248, 12, 48, 248, 102, 224, 130, 32, 153, 195,
          143, 252, 13, 194, 7, 66, 13, 135, 3, 55, 15, 3, 41, 135, 47, 55, 7,
          47, 36, 130, 3, 4, 100, 16, 104, 35, 112, 176, 9, 224, 24, 40, 23,
          253, 144, 36, 4, 178, 12, 12, 14, 31, 252, 220, 56, 180, 56, 89, 184,
          50, 112, 36, 112, 99, 228, 64, 231, 231, 112, 205, 193, 93, 32, 103,
          112, 231, 254, 3, 112, 129, 192, 194, 225, 79, 205, 195, 175, 66, 41,
          4, 110, 12, 10, 15, 235, 254, 105, 12, 14, 8, 68, 19, 112, 112, 63,
          41, 16, 56, 91, 172, 18, 248, 98, 16, 64, 128, 223, 192, 96, 203, 255,
          102, 225, 224, 98, 80, 96, 63, 251, 241, 184, 56, 63, 255, 254, 118,
          4, 96, 26, 56, 51, 112, 81, 245, 112, 159, 254, 4, 60, 46, 8, 0, 18,
          16, 66, 96, 64, 0, 255, 55, 166, 225, 225, 96, 208, 186, 126, 8, 56,
          48, 40, 48, 216, 84, 136, 43, 128, 155, 161, 193, 0, 193, 203, 198, 0,
          141, 131, 37, 6, 115, 5, 28, 12, 44, 220, 58, 208, 16, 104, 62, 9,
          240, 188, 64, 0, 200, 0, 77, 194, 131, 7, 44, 5, 254, 200, 2, 195, 27,
          130, 128, 6, 250, 79, 5, 136, 20, 124, 26, 20, 108, 108, 12, 13, 118,
          16, 0, 147, 8, 70, 225, 0, 2, 127, 207, 98, 0, 22, 55, 24, 42, 24,
          220, 44, 189, 212, 40, 1, 88, 89, 184, 200, 58, 152, 67, 112, 160,
          177, 64, 9, 85, 0, 129, 239, 2, 70, 75, 255, 128, 162, 32, 42, 85,
          225, 97, 112, 225, 252, 5, 49, 167, 210, 103, 234, 85, 231, 224, 48,
          160, 65, 195, 83, 64, 145, 136, 143, 130, 137, 0, 26, 50, 19, 126, 19,
          52, 88, 9, 4, 149, 137, 32, 3, 97, 255, 70, 112, 76, 35, 175, 255,
          210, 160, 255, 255, 253, 0, 110, 181, 255, 243, 64, 215, 142, 130, 0,
          23, 1, 255, 173, 134, 4, 3, 255, 40, 156, 35, 40, 0, 9, 116, 116, 225,
          35, 113, 183, 255, 242, 137, 195, 115, 6, 199, 174, 129, 27, 139, 1,
          27, 3, 153, 27, 46, 0, 6, 213, 164, 9, 33, 47, 255, 255, 128, 161, 65,
          148, 140, 188, 151, 24, 131, 233, 171, 107, 192, 128, 248, 6, 214,
          192, 158, 65, 0, 3, 95, 160, 0, 121, 76, 8, 0, 85, 45, 208, 17, 176,
          223, 195, 117, 208, 241, 184, 216, 1, 189, 219, 241, 176, 191, 1, 181,
          208, 115, 112, 195, 107, 160, 19, 243, 118, 176, 51, 119, 190, 3, 118,
          191, 227, 118, 221, 1, 181, 208, 33, 176, 191, 211, 117, 242, 241,
          184, 188, 1, 181, 208, 17, 176, 191, 195, 117, 241, 243, 118, 176, 3,
          118, 208, 243, 119, 159, 131, 118, 216, 3, 119, 230, 235, 104, 3, 123,
          247, 227, 97, 62, 3, 107, 224, 102, 225, 70, 215, 192, 35, 227, 97,
          58, 0, 177, 0
  };
#else
  const unsigned char img_compressed[467] = { // 119 x 56 x 1 bits
    187, 206, 32, 32, 210, 160, 63, 255, 128, 112, 184, 63, 255, 192, 14, 46,
        30, 14, 54, 63, 255, 224, 3, 139, 159, 255, 240, 0, 226, 239, 255, 243,
        57, 159, 255, 240, 52, 179, 56, 63, 195, 57, 191, 131, 57, 168, 83, 12,
        224, 157, 140, 51, 130, 14, 48, 206, 10, 20, 184, 15, 226, 62, 14, 33,
        28, 20, 63, 1, 7, 240, 95, 194, 2, 185, 131, 158, 64, 32, 126, 12, 5, 0,
        28, 36, 8, 6, 17, 148, 24, 15, 132, 74, 24, 0, 40, 32, 128, 33, 56, 48,
        30, 16, 56, 104, 66, 76, 32, 16, 52, 30, 32, 208, 48, 0, 81, 0, 16, 49,
        192, 224, 56, 28, 64, 208, 48, 0, 82, 0, 16, 51, 2, 0, 48, 60, 128, 148,
        32, 0, 101, 0, 146, 32, 194, 32, 114, 1, 40, 71, 97, 96, 32, 32, 102,
        16, 122, 1, 156, 82, 8, 80, 49, 16, 80, 229, 40, 49, 254, 69, 254, 1,
        126, 161, 64, 255, 16, 224, 152, 80, 208, 136, 52, 10, 135, 6, 7, 2,
        194, 66, 35, 5, 128, 96, 208, 8, 241, 168, 24, 5, 134, 3, 12, 129, 194,
        36, 17, 130, 192, 37, 80, 84, 192, 209, 32, 20, 40, 20, 64, 2, 14, 2,
        33, 96, 54, 5, 56, 128, 98, 32, 24, 72, 36, 130, 9, 33, 5, 130, 162, 4,
        170, 13, 194, 3, 16, 128, 194, 33, 24, 8, 69, 15, 255, 193, 51, 131, 8,
        128, 248, 32, 82, 1, 64, 49, 21, 16, 56, 67, 56, 56, 8, 12, 162, 7, 192,
        130, 80, 5, 64, 138, 65, 144, 145, 65, 96, 3, 2, 192, 65, 132, 192, 128,
        65, 160, 80, 137, 160, 166, 193, 50, 131, 4, 240, 71, 72, 32, 224, 38,
        24, 12, 52, 7, 9, 16, 134, 67, 7, 64, 216, 39, 74, 176, 112, 26, 24, 12,
        26, 11, 8, 136, 76, 16, 160, 197, 40, 22, 127, 244, 3, 252, 118, 6, 15,
        242, 136, 71, 248, 17, 136, 4, 158, 2, 107, 4, 0, 36, 16, 6, 18, 4, 26,
        3, 16, 32, 0, 143, 48, 193, 192, 224, 24, 128, 186, 197, 78, 130, 14, 9,
        158, 8, 68, 23, 88, 175, 48, 239, 0, 32, 126, 0, 225, 112, 32, 80, 193,
        192, 193, 201, 35, 127, 0, 129, 223, 32, 19, 242, 72, 192, 1, 39, 240,
        63, 192, 56, 207, 255, 128, 28, 93, 255, 254, 58, 24, 0, 47, 255, 254,
        13, 46, 3, 255, 87, 130, 0, 42, 7, 255, 47, 136, 14, 36, 176, 100, 31,
        254, 147, 20, 0, 52, 60, 206, 108, 124, 206, 106, 20, 28, 2, 20, 208,
        105, 104, 80, 76, 230, 3, 129, 51, 130 };
#endif
  JsVar *v = jsvNewNativeString((char*)&img_compressed[0], sizeof(img_compressed));
  JsVar *img = jsvGetArrayBufferBackingString(jswrap_heatshrink_decompress(v));
  jsvUnLock(v);
  return img;
}

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "loadWidgets",
    "generate_js" : "libs/js/banglejs/Bangle_loadWidgets.min.js",
    "ifdef" : "BANGLEJS"
}
Load all widgets from flash Storage. Call this once at the beginning
of your application if you want any on-screen widgets to be loaded.

They will be loaded into a global `WIDGETS` array, and
can be rendered with `Bangle.drawWidgets`.
*/
/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "drawWidgets",
    "generate_js" : "libs/js/banglejs/Bangle_drawWidgets.min.js",
    "ifdef" : "BANGLEJS"
}
Draw any onscreen widgets that were loaded with `Bangle.loadWidgets()`.

Widgets should redraw themselves when something changes - you'll only
need to call drawWidgets if you decide to clear the entire screen
with `g.clear()`.
*/
/*JSON{
    "type" : "staticmethod", "class" : "Bangle", "name" : "drawWidgets", "patch":true,
    "generate_js" : "libs/js/banglejs/Bangle_drawWidgets_Q3.js",
    "#if" : "defined(BANGLEJS) && defined(BANGLEJS_Q3)"
}
*/

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "showLauncher",
    "generate_js" : "libs/js/banglejs/Bangle_showLauncher.min.js",
    "ifdef" : "BANGLEJS"
}
Load the Bangle.js app launcher, which will allow the user
to select an application to launch.
*/

/*JSON{
    "type" : "staticmethod",
    "class" : "E",
    "name" : "showMenu",
    "generate_js" : "libs/js/banglejs/E_showMenu.min.js",
    "params" : [
      ["menu","JsVar","An object containing name->function mappings to to be used in a menu"]
    ],
    "return" : ["JsVar", "A menu object with `draw`, `move` and `select` functions" ],
    "ifdef" : "BANGLEJS"
}
Display a menu on the screen, and set up the buttons to navigate through it.

Supply an object containing menu items. When an item is selected, the
function it references will be executed. For example:

```
var boolean = false;
var number = 50;
// First menu
var mainmenu = {
  "" : { "title" : "-- Main Menu --" },
  "Backlight On" : function() { LED1.set(); },
  "Backlight Off" : function() { LED1.reset(); },
  "Submenu" : function() { E.showMenu(submenu); },
  "A Boolean" : {
    value : boolean,
    format : v => v?"On":"Off",
    onchange : v => { boolean=v; }
  },
  "A Number" : {
    value : number,
    min:0,max:100,step:10,
    onchange : v => { number=v; }
  },
  "Exit" : function() { E.showMenu(); }, // remove the menu
};
// Submenu
var submenu = {
  "" : { "title" : "-- SubMenu --" },
  "One" : undefined, // do nothing
  "Two" : undefined, // do nothing
  "< Back" : function() { E.showMenu(mainmenu); },
};
// Actually display the menu
E.showMenu(mainmenu);
```

The menu will stay onscreen and active until explicitly removed,
which you can do by calling `E.showMenu()` without arguments.

See http://www.espruino.com/graphical_menu for more detailed information.
*/

/*JSON{
    "type" : "staticmethod",
    "class" : "E",
    "name" : "showMessage",
    "generate_js" : "libs/js/banglejs/E_showMessage.min.js",
    "params" : [
      ["message","JsVar","A message to display. Can include newlines"],
      ["title","JsVar","(optional) a title for the message"]
    ],
    "ifdef" : "BANGLEJS"
}

A utility function for displaying a full screen message on the screen.

Draws to the screen and returns immediately.

```
E.showMessage("These are\nLots of\nLines","My Title")
```
*/
/*JSON{
    "type" : "staticmethod",
    "class" : "E",
    "name" : "showPrompt",
    "generate_js" : "libs/js/banglejs/E_showPrompt.min.js",
    "params" : [
      ["message","JsVar","A message to display. Can include newlines"],
      ["options","JsVar","(optional) an object of options (see below)"]
    ],
    "return" : ["JsVar","A promise that is resolved when 'Ok' is pressed"],
    "ifdef" : "BANGLEJS"
}

Displays a full screen prompt on the screen, with the buttons
requested (or `Yes` and `No` for defaults).

When the button is pressed the promise is resolved with the
requested values (for the `Yes` and `No` defaults, `true` and `false`
are returned).

```
E.showPrompt("Do you like fish?").then(function(v) {
  if (v) print("'Yes' chosen");
  else print("'No' chosen");
});
// Or
E.showPrompt("How many fish\ndo you like?",{
  title:"Fish",
  buttons : {"One":1,"Two":2,"Three":3}
}).then(function(v) {
  print("You like "+v+" fish");
});
```

To remove the prompt, call `E.showPrompt()` with no arguments.

The second `options` argument can contain:

```
{
  title: "Hello",                      // optional Title
  buttons : {"Ok":true,"Cancel":false} // list of button text & return value
}
```
*/

/*JSON{
    "type" : "staticmethod", "class" : "E", "name" : "showMenu", "patch":true,
    "generate_js" : "libs/js/banglejs/E_showMenu_Q3.min.js",
    "#if" : "defined(BANGLEJS) && defined(BANGLEJS_Q3)"
}
*/
/*JSON{
    "type" : "staticmethod", "class" : "E", "name" : "showMenu", "patch":true,
    "generate_js" : "libs/js/banglejs/E_showMenu_F5.js",
    "#if" : "defined(BANGLEJS) && defined(DTNO1_F5)"
}
*/
/*JSON{
    "type" : "staticmethod", "class" : "E", "name" : "showPrompt", "patch":true,
    "generate_js" : "libs/js/banglejs/E_showPrompt_Q3.min.js",
    "#if" : "defined(BANGLEJS) && defined(BANGLEJS_Q3)"
}
*/

/*JSON{
    "type" : "staticmethod",
    "class" : "E",
    "name" : "showAlert",
    "generate_js" : "libs/js/banglejs/E_showAlert.min.js",
    "params" : [
      ["message","JsVar","A message to display. Can include newlines"],
      ["options","JsVar","(optional) a title for the message"]
    ],
    "return" : ["JsVar","A promise that is resolved when 'Ok' is pressed"],
    "ifdef" : "BANGLEJS"
}

Displays a full screen prompt on the screen, with a single 'Ok' button.

When the button is pressed the promise is resolved.

```
E.showAlert("Hello").then(function() {
  print("Ok pressed");
});
// or
E.showAlert("These are\nLots of\nLines","My Title").then(function() {
  print("Ok pressed");
});
```

To remove the window, call `E.showAlert()` with no arguments.
*/

/*JSON{
    "type" : "variable",
    "name" : "LED",
    "generate" : "gen_jswrap_LED1",
    "return" : ["JsVar","A `Pin` object for a fake LED which appears on "],
    "ifdef" : "BANGLEJS", "no_docs":1
}

On most Espruino board there are LEDs, in which case `LED` will be an actual Pin.

On Bangle.js there are no LEDs, so to remain compatible with example code that might
expect an LED, this is an object that behaves like a pin, but which just displays
a circle on the display
*/
/*JSON{
    "type" : "variable",
    "name" : "LED1",
    "generate_js" : "libs/js/banglejs/LED1.min.js",
    "return" : ["JsVar","A `Pin` object for a fake LED which appears on "],
    "ifdef" : "BANGLEJS", "no_docs":1
}

On most Espruino board there are LEDs, in which case `LED1` will be an actual Pin.

On Bangle.js there are no LEDs, so to remain compatible with example code that might
expect an LED, this is an object that behaves like a pin, but which just displays
a circle on the display
*/
/*JSON{
    "type" : "variable",
    "name" : "LED2",
    "generate_js" : "libs/js/banglejs/LED2.min.js",
    "return" : ["JsVar","A `Pin` object for a fake LED which appears on "],
    "ifdef" : "BANGLEJS", "no_docs":1
}

On most Espruino board there are LEDs, in which case `LED2` will be an actual Pin.

On Bangle.js there are no LEDs, so to remain compatible with example code that might
expect an LED, this is an object that behaves like a pin, but which just displays
a circle on the display
*/


/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "setUI",
    "generate_js" : "libs/js/banglejs/Bangle_setUI_F18.js",
    "params" : [
      ["type","JsVar","The type of UI input: 'updown', 'leftright', 'clock', 'clockupdown' or undefined to cancel"],
      ["callback","JsVar","A function with one argument which is the direction"]
    ],
    "ifdef" : "BANGLEJS"
}
This puts Bangle.js into the specified UI input mode, and calls the callback provided when there is user input.

Currently supported interface types are:

* 'updown' - UI input with upwards motion `cb(-1)`, downwards motion `cb(1)`, and select `cb()`
  * Bangle.js 1 uses BTN1/3 for up/down and BTN2 for select
  * Bangle.js 2 uses touchscreen swipe up/down and tap
* 'leftright' - UI input with left motion `cb(-1)`, right motion `cb(1)`, and select `cb()`
  * Bangle.js 1 uses BTN1/3 for left/right and BTN2 for select
  * Bangle.js 2 uses touchscreen swipe left/right and tap/BTN1 for select
* 'clock' - called for clocks. Sets `Bangle.CLOCK=1` and allows a button to start the launcher
  * Bangle.js 1 BTN2 starts the launcher
  * Bangle.js 2 BTN1 starts the launcher
* 'clockupdown' -
  * Bangle.js 1 BTN2 starts the launcher, BTN1/BTN3 call `cb(-1)` and `cb(1)`
  * Bangle.js 2 BTN1 starts the launcher, touchscreen tap in top/bottom right hand side calls `cb(-1)` and `cb(1)`
* `undefined` removes all user interaction code

While you could use setWatch/etc manually, the benefit here is that you don't end up with multiple `setWatch` instances, and
the actual input method (touch, or buttons) is implemented dependent on the watch (Bangle.js 1 or 2)

**Note:** You can override this function in boot code to change the interaction mode with the watch. For instance
you could make all clocks start the launcher with a swipe by using:

```
(function() {
  var sui = Bangle.setUI;
  Bangle.setUI = function(mode, cb) {
    if (mode!="clock") return sui(mode,cb);
    sui(); // clear
    Bangle.CLOCK=1;
    Bangle.swipeHandler = Bangle.showLauncher;
    Bangle.on("swipe", Bangle.swipeHandler);
  };
})();
```
*/
/*JSON{
    "type" : "staticmethod", "class" : "Bangle", "name" : "setUI", "patch":true,
    "generate_js" : "libs/js/banglejs/Bangle_setUI_Q3.js",
    "#if" : "defined(BANGLEJS) && defined(BANGLEJS_Q3)"
}
*/

/*JSON{
    "type" : "staticmethod",
    "class" : "Bangle",
    "name" : "factoryReset",
    "generate" : "jswrap_banglejs_factoryReset",
    "ifdef" : "BANGLEJS_Q3"
}

Erase all storage and reload it with the default
contents.

This is only available on Bangle.js 2.0. On Bangle.js 1.0
you need to use `Install Default Apps` under the About page
of http://banglejs.com/apps
*/
void jswrap_banglejs_factoryReset() {
  jsfResetStorage();
  jsiStatus |= JSIS_TODO_FLASH_LOAD;
}