Raspberry Pi Zero and ttyAMA0 not working

[Tristan107]

Disable console over Serial in Dev on RPi3?

Ok, this time I think I got it (can’t test right now). So, the answer would be “no Docker layers won’t influence what’s happening on the host” but RESIN_HOST_CONFIG_* application variables set in “Fleet Configuration > Application config variables” will ! So in my case, the 3 things to do (only 2 in prod ResinOS) to make the serial port readable were : Disabling port services (watching carefully the serial0/serial1 links or disabling everything) : mount -o remount,rw / systemctl mask seria…