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I am attempting to connect to the UART0 on my Raspberry Pi 4B. I have shorted together GPIO pins 14 and 15 (pins 8 an 10 on the header). I then run picocom /dev/ttyAMA0 and see if it's echoing (it is not).

I have tried a wide variety of config.txt options to get it working (there are many), to the point that I think there might be something wrong with my hardware. Does anyone have a complete config.txt example that will enable the UART0 so that I can connect to it using picocom?

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1 Answer 1

Reset to default
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Do not fiddle with config.txt; enable serial in raspi-config.

tty/AMA0 is connected to Bluetooth.

DO NOT use AMA0 use /tty/serial0.

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  • Thank you. I just did a gpio test and it turns out pin 14 failed, so it was a hardware issue.
    – Jeremy Salwen
    Commented May 15 at 0:06

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