[riot-notifications] [RIOT-OS/RIOT] Getting UART error in ESp32-wroom (#16249)

Gunar Schorcht notifications at github.com
Sun Apr 4 13:12:07 CEST 2021


The warning message is thrown if the flash mode is either `qout` or `qio`. In that case, the Quad SPI interface is used for SPI flash which in turn occupies GPIO 9 an GPIO 10 so that they can't be used as UART interface.

Could you check whether this is the case by using the the following command?
```
BOARD=esp32-wroom-32 make -C <your app directory> info-debug-variable-FLASH_MODE
```

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/RIOT-OS/RIOT/issues/16249#issuecomment-813014956
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.riot-os.org/pipermail/notifications/attachments/20210404/c6d9e00c/attachment.htm>


More information about the notifications mailing list