v1.20-rc6: partition layout incompatible with old bootloaders?

pycom / pycom-micropython-sigfox

A fork of MicroPython with the ESP32 port customized to run on Pycom's IoT multi-network modules.

MIT License

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v1.20-rc6: partition layout incompatible with old bootloaders? #252

Closed martijnthe closed 5 years ago

martijnthe commented 5 years ago

@iwahdan88 I noticed you changed the flash partitioning in 3eb11ef3ea30922aa5383ae8bf8ed4ec6d20e723, increasing the size of the factory + ota slots by ~200KB or so.

I guess this means you cannot update to v1.20 if you have an older bootloader, because the image size etc. is hard-coded in the bootloader (i.e. IMG_SIZE etc.)?

Is my assumption correct?

What new part(s) made the firmware grow so much?

martijnthe commented 5 years ago

@iwahdan88 / @Xykon would you take a PR that adds a #define to make it possible to leave out openthread? It takes up a whopping 125KB of code space:

schermafbeelding 2019-01-25 om 17 11 30 (Generated graph with https://github.com/armmbed/mbed-os-linker-report, swapped out arm-none-eabi-nm with xtensa-esp32-elf-nm)

iwahdan88 commented 5 years ago

Hello @martijnthe , you are correct regarding the OTA update from stable to New 1.20 Firmware, currently this is not possible because there is no way Now to update the partition table over the air, we are currently researching this matter for possible solutions.

As for the PR, yes of course, please submit it and we will review and included in next release. Thanks very much for your help.

martijnthe commented 5 years ago

@iwahdan88 there you go: https://github.com/pycom/pycom-micropython-sigfox/pull/253