Frozen modules attempt failed

[davef]

The board is an ESP-07S. The standard v1.14 image loads and works with the quoted esptool command.

Sometimes it helps to lower to he baud rate. I use 460800. Sometimes even 230400.

These are higher than the default 115200. I did try 74,400 as I saw that mentioned somewhere.
I will try dout.

Thanks

.

[Roberthh]

For firmware update higher baud rates are used. The default is 921600, but that's to fast for many boards. 115200 should work at least. If that does not work, the problem is not th baud rate. The baud rate of 74880 is used during the start phase of the module by the esp8266 itself, not for firmware upgrades by the PC.

[davef]

Ah, thanks for the clarification on baudrates.

dout gives the same result.

Fortunately, I have something useful without frozen modules. I need to determine what is wrong in the build process for the default image.

For the standard micropython v1.14 image both dio and dout work.

Code: Select all

sudo esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --flash_size=1MB -fm dout 0x0 esp8266-1m-20210202-v1.14.bin