Interfacing (DSI, CSI, I2C, etc.) • Re: UART0 with Tx on GPIO14 problems

Here we see the output from a Pi5 (Trixie 64-bit Desktop) with serial enabled on GPIO (14/15).
The Pi5 uses a python script to send b'\x55\x55\x55\x55\x55\x55\x55\x55' in a loop to a Pi4 UART on GPIO
Sorry my scope is only a cheap USB one.
(Green line is a reference 1kHz square wave - ignore it)

Statistics: Posted by neilgl — Sun Jan 11, 2026 7:57 pm

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