Guille.Helm

The connections are fine, I had the same configuration on a raspberry pi zero but I wanted to change it due to a higher processing capacity. If I turn on the board disconnected from the device, it starts up without a problem and when I connect the device everything is working but I need it to start already connected

If I connected the serial port with my device through GPIO pin 8 and 10 (UART_AO_A_TXD, UART_AO_A_RXD), the Radxa Zero with " Armbian 23.02.2 Jammy" failed to boot. If I removed my device from the serial port, zero can boot. After booting, I connected my device to the UART port, it worked well through /dev/ttyAML0. Any suggestions? Many thanks!

I'm having trouble enabling UART_B on my Radxa Zero Ver 1.51 board using "Armbian 23.02.2 Jammy" The idea is to connect a GPS, I had already done this with a Raspberry Pi Zero and it worked fine but I need more CPU capacity and that's why I switched to this board. Has anyone had experiences to enable these serial ports? Thanks