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

Eleftheria notifications at github.com
Sun Apr 4 23:17:34 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
> ```
I did not understand what the warning means  why the warning is being thrown since I did not declare a flash mode when running the code !! The command we used to run the code was : 
cd into directory 
sudo BUILD_IN_DOCKER=1 BOARD=esp32-wroom-32 make  
but we can try also the one you proposed 

You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.riot-os.org/pipermail/notifications/attachments/20210404/a87bd3e8/attachment.htm>

More information about the notifications mailing list