MicroPython on M5Stamp-C3
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No idea why the ESP32-C3 needed to be written starting at 0x0, rather than 0x1000, but sure enough it did. I couldn't figure out why nothing could seem to be written successfully to my STAMP-C3, but basically nothing was working. Now, thanks to a blog post I found, it's successfully running the generic ESP32-C3 MicroPython binary.
Successful esptool.py commands:
esptool.py -p COMx -b 1500000 --before default_reset erase_flash
esptool.py -p COMx -b 1500000 --before default_reset write_flash -z 0x0 esp32c3-20210902-v1.17.binResult on REPL:
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x121c
load:0x403ce000,len:0x744
load:0x403d0000,len:0x26c4
entry 0x403ce000
MicroPython v1.17 on 2021-09-02; ESP32C3 module with ESP32C3
Type "help()" for more information. -
Hello @mlindholm
thank you for sharing. The bootloader address is different between ESP32 and ESP32c3.
- ESP32: Bootloader is located at the address 0x1000 in the flash. See here.
- ESP32c3: Bootloader is located at the address 0x0 in the flash. See here.
Thanks
Felix -
The difference is because the C3 uses a RISC V core and not an esp32 core.
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@mlindholm would you share the link to that blog post?. Thanks.
