Fix ESP-12E flash size

[celsworth]

I believe this 512k maximum_size is in error; the 4M ldscript is used just above, and I had to manually bodge esptool's -bz parameter to play with ArduinoOTA.

This should set it to 4M correctly.

[celsworth]

Er sorry I've no idea how all those branches got merged in..

[ivankravets]

I had to manually bodge esptool's -bz parameter to play with ArduinoOTA.

What do you mean under it? You can use own extra_script.

[celsworth]

I'm not sure what you mean. The -bz parameter to esptool sets the size of the flash, right? It is set to 512k on an ldscript that is configured for 4M, I thought they were supposed to match.

[celsworth]

Thanks for merging this. However it seems to have produced a new issue:

/home/chris/.platformio/packages/tool-esptool/esptool -eo /home/chris/.platformio/packages/framework-arduinoespressif/bootloaders/eboot/eboot.elf -bo .pioenvs/esp12/firmware.bin -bm dio -bf 80 -bz 4096K -bs .text -bp 4096 -ec -eo .pioenvs/esp12/firmware.elf -bs .irom0.text -bs .text -bs .data -bs .rodata -bc -ec
error: invalid flash size value: 4096K
scons: *** [.pioenvs/esp12/firmware.bin] Error 255

It needs to be 4M rather than 4096K; this works:

/home/chris/.platformio/packages/tool-esptool/esptool -eo /home/chris/.platformio/packages/framework-arduinoespressif/bootloaders/eboot/eboot.elf -bo .pioenvs/esp12/firmware.bin -bm dio -bf 80 -bz 4M -bs .text -bp 4096 -ec -eo .pioenvs/esp12/firmware.elf -bs .irom0.text -bs .text -bs .data -bs .rodata -bc -ec

esptool seems to need the M suffix for anything bigger than 1M. I don't know where this should be fixed in platformio though.

(reference: https://github.com/igrr/esptool-ck/blob/master/binimage/esptool_binimage.c#L312)

[ivankravets]

Fixed in development version http://docs.platformio.org/en/latest/installation.html#development-version

Please re-test it. Thanks.

[celsworth]

Thanks, all working now!