search

micropython / micropython-esp32

Old port of MicroPython to the ESP32 -- new port is at https://github.com/micropython/micropython
MIT License
678 stars 218 forks source link

Current ESP32 image (esp32-20170731...) boot failure #147

Closed heuckeg closed 5 years ago

heuckeg commented 7 years ago

The header (the first 10 bytes of the bin bile) of this file (and previous bin's) is: E9 04 02 20 xx xx xx xx EE 00

The ninth byte is wrong. It's a marker for a encoded bin file. I changed this byte manually to 00 that it looks like this: E9 04 02 20 xx xx xx xx 00 00

Then micro phython was starting up on a esp32 wroom based board.

I don't know where to change in the source code of micropython.

Grettings, Gunter

dpgeorge commented 7 years ago

Please note that images must now be flashed at the location 0x1000.

nickzoic commented 7 years ago

Hi Damien, if the flash has been corrupted can the data at 0x0 be restored somehow?

dpgeorge commented 7 years ago

if the flash has been corrupted can the data at 0x0 be restored somehow?

You can read the flash using esptool.py read_flash and use that to make a backup. Otherwise best thing to do is just erase everything and start again.