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