micropython/lora RuntimeError: Unexpected silicon version 0 #774
Description
Having an issue with running micropython/lora on a 8MB WeACT Blackpill. It runs fine from the internal flash,
using a different firmware at the website: https://github.com/nspsck/STM32F411CEU6_BlackPill_Micropython/tree/main
On the 8MB variant:
Entering REPL. Use Control-X to exit.
MicroPython v1.22.0-preview.162.g6117aa686.dirty on 2023-11-19; WeAct Studio Blackpill v3.1 8MB with STM32F411CE
Type "help()" for more information.
>>>
>>>
MPY: sync filesystems
MPY: soft reboot
Traceback (most recent call last):
File "main.py", line 216, in <module>
File "main.py", line 54, in main
File "main.py", line 47, in get_modem
File "sx127x.py", line 267, in __init__
RuntimeError: Unexpected silicon version 0
MicroPython v1.22.0-preview.162.g6117aa686.dirty on 2023-11-19; WeAct Studio Blackpill v3.1 8MB with STM32F411CE
Type "help()" for more information.
When I was working on this distro:
https://github.com/Wei1234c/SX127x_driver_for_MicroPython_on_ESP8266/tree/master
I would sometimes get this error on the ESP32 platform, which "seemed" to be sorted by doing a manual RF96 chip reset.
I did notice that the reset low could vary from 1ms to as short as 100us, so I tried making the low and the following high for 50ms, to no avail.
In the past I have just commented-out that test, but when I do it for these 8MB boards the units do not communicate.
Seems to suggest that SPI comms to the LoRa chip differs between internal and external flash.