Thanks Igor, But that didn't work for me out of the box. I downloaded the latest image today. I see that the /boot/boot.cmd file has been adapted to use ttyS1 as default. But apparently the UART port itself is not enabled, so using the armbian-config utility I had to go to: ⋅ System and se...

To further clarify my previous post: the instructions apply if your OS is FriendlyCore . If you want to use Armbian the procedure is different. The Armbian page for the R1 mentions that "Debug serial console is enabled on UART0, which is located near mUSB port," So apparently the second UA...

Indeed that works. But the first output lines will still be displayed on the default console: U-Boot SPL 2017.11 (Jan 17 2019 - 16:29:28) DRAM: 1024 MiB(408MHz) CPU Freq: 408MHz memory test: 1 Pattern 55aa Writing...Reading...OK Trying to boot from MMC1 Boot device: sd U-Boot 2017.11 (Jan 17 2019 - ...

Hello, I recently acquired a Nano PI R1 and I have been using the debug console on UART0 (the 3 pins along the 1 Gb ethernet port). See picture below. It works perfectly, I can see U-boot and even interrupt it. I am wondering if it is possible to use UART1 as default debug console instead of UART0. ...