Can I use this to configure multiple UART ports on Pi 4, Pi 5?
I find out solution by myself. Just use HDMI monitor and USB keyboard, when the pi startup, type login to get #, then type vi /mnt/boot/config.txt to edit it to enable UART0, UART1. UART2, UART3, UART4, UART5. usaually add line dtoverlay=uart0…