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Make Espruino autodetect RAM (and flash?) size #340

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gfwilliams opened this issue Apr 24, 2014 · 2 comments
Closed

Make Espruino autodetect RAM (and flash?) size #340

gfwilliams opened this issue Apr 24, 2014 · 2 comments

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@gfwilliams
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Some people want to be able to solder chips with more RAM onto the board. Espruino could be made to detect the amount of RAM on startup and to adjust the JsVar count automatically.

It'd need:

  • To be able to find out RAM/ROM size (perhaps via the chip ID register that the flash loader seems to use?), or maybe there is a special one
  • The linker scripts need changing to put jsVars at the end of the RAM
  • The process.memory function (and stack checker) need updating so that they know where that stack really ends
@gfwilliams
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See F103 reference: 30.1 Memory size registers

Flash: 1024_(_(uint16_t*)0x1FFFF7E0)

No RAM though?

@gfwilliams
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Doing board-specific builds is so easy now I don't think there's any call for this.

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@gfwilliams