Created
January 27, 2012 10:57
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IR Remote control for arduino. Hex string Command is read serially and then transmitted from IRlED on pin 14
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| /* | |
| This is the final implementation of reading the command from the serial as string | |
| repeating it to the irled | |
| */ | |
| int IRled = 14; //this is the IR LED | |
| int Begin = 13; //this indicates the status of the command sent | |
| int serIn; // var that will hold the bytes-in read from the serialBuffer | |
| char serInString[100]; // array that will hold the different bytes 100=100characters; | |
| int serInIndx = 0; // index of serInString[] in which to insert the next incoming byte | |
| int serOutIndx = 0; // index of the outgoing serInString[] array; | |
| int commandLen=0; | |
| void setup() | |
| { | |
| Serial.begin(9600); | |
| // Setup IRLed and Begin Led Pins as outputs | |
| pinMode(IRled, OUTPUT); // sets the digital pin as output | |
| pinMode(Begin, OUTPUT); // sets the digital pin as output | |
| } | |
| void loop() | |
| { | |
| readSerialString(); | |
| delay(10); | |
| sendCodeToSonyIR(); | |
| } | |
| void readSerialString() { | |
| int sb; | |
| if (Serial.available()) { | |
| //Serial.print("reading Serial String: "); //optional confirmation | |
| while (Serial.available()) { | |
| sb = Serial.read(); | |
| serInString[serInIndx] = sb; | |
| serInIndx++; | |
| commandLen++; | |
| //serialWrite(sb); //optional confirmation | |
| } | |
| //Serial.println(); | |
| } | |
| } | |
| void printSerialString() { | |
| if (serInIndx > 0) { | |
| Serial.print("Arduino memorized that you said: "); | |
| //loop through all bytes in the array and print them out | |
| for (serOutIndx = 0; serOutIndx < serInIndx; serOutIndx++) { | |
| Serial.print(serInString[serOutIndx]); //print out the byte at the specified index | |
| //serInString[serOutIndx] = ""; //optional: flush out the content | |
| } | |
| //reset all the functions to be able to fill the string back with content | |
| serOutIndx = 0; | |
| serInIndx = 0; | |
| Serial.println(); | |
| } | |
| } | |
| void sendCodeToSonyIR() | |
| { | |
| if(commandLen>0){ | |
| int len=commandLen; | |
| int command[len*4]; | |
| for(int i=0;i<len;i++) | |
| { | |
| if(serInString[i]=='0') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='1') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='2') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='3') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='4') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='5') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='6') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='7') | |
| { | |
| command[(i*4)+0]=0; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='8') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='9') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='a') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='b') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=0; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='c') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='d') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=0; | |
| command[(i*4)+3]=1; | |
| } | |
| else if(serInString[i]=='e') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=0; | |
| } | |
| else if(serInString[i]=='f') | |
| { | |
| command[(i*4)+0]=1; | |
| command[(i*4)+1]=1; | |
| command[(i*4)+2]=1; | |
| command[(i*4)+3]=1; | |
| } | |
| } | |
| for(int i=0;i<(len*4);i++) | |
| { | |
| Serial.println(command[i]); | |
| } | |
| digitalWrite(Begin, HIGH); // Signal Begin LED ON | |
| for (int i=1; i <= 3; i++) // Send Command 3 times as per Sony Specs | |
| { | |
| header(); // Send the Start header | |
| for (int i=0; i < (len*4); i++) // Loop to send the bits | |
| { | |
| if(command[i] == 1) // Is Data_is_One to be sent ? | |
| { | |
| Data_is_One(); // Yes, send a Data_is_One bit | |
| } | |
| else // No, Data_is_Zero to be sent | |
| { | |
| Data_is_Zero(); // Send a Data_is_Zero bit | |
| } | |
| } | |
| delay(11); // Delay Padding to give approx 45mS between command starts | |
| } | |
| digitalWrite(Begin, LOW); // Begin LED OFF | |
| commandLen=0; | |
| } | |
| } | |
| // Routine to give the 40kHz burst signal | |
| void burst() // 40KHz burst | |
| { | |
| digitalWrite(IRled, HIGH); // sets the pin on | |
| delayMicroseconds(10); // pauses for 13 microseconds (fudged to 10uS Delay) | |
| digitalWrite(IRled, LOW); // sets the pin off | |
| delayMicroseconds(8); // pauses for 12 microseconds (fudged to 8uS Delay) | |
| } | |
| // Routine to give a quiet period of data | |
| void quiet() // Quiet burst | |
| { | |
| digitalWrite(IRled, LOW); // sets the pin off | |
| delayMicroseconds(10); // pauses for 13 microseconds (fudged to 10uS Delay) | |
| digitalWrite(IRled, LOW); // sets the pin off | |
| delayMicroseconds(8); // pauses for 12 microseconds (fudged to 8uS Delay) | |
| } | |
| // Routine to send header data burst | |
| // This allows the IR reciever to set its AGC (Gain) | |
| // Header Burst Timing is 96 * 0.025uS = 2.4mS | |
| // Quiet Timing is 24 * 0.025uS = 600uS | |
| void header() | |
| { | |
| for (int i=1; i <= 96; i++){ | |
| burst(); // 40kHz burst | |
| } | |
| for (int i=1; i <= 24; i++){ | |
| quiet(); // No 40 kHz | |
| } | |
| } | |
| // Routine to send one data burst | |
| // Burst Timing is 48 * 0.025uS = 1.2mS | |
| // Quiet Timing is 24 * 0.025uS = 600uS | |
| void Data_is_One() | |
| { | |
| for (int i=1; i <= 48; i++){ | |
| burst(); // 40kHz burst | |
| } | |
| for (int i=1; i <= 24; i++){ | |
| quiet(); // No 40 kHz | |
| } | |
| } | |
| // Routine to send zero data burst | |
| // Burst Timing is 24 * 0.025uS = 600uS | |
| // Quiet Timing is 24 * 0.025uS = 600uS | |
| void Data_is_Zero() | |
| { | |
| for (int i=1; i <= 24; i++){ | |
| burst(); // 40 kHz burst | |
| } | |
| for (int i=1; i <= 24; i++){ | |
| quiet(); // No 40 kHz | |
| } | |
| } |
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