I have a NanoPi Neo Air (Allwinner H3 SoC) with onboard wifi and a serial interface. Unfortunately during some late hour hacking I managed to accidentally connect 5V onto its TX pin, I think effectively screwing up its UART0. I can no longer connect to it via a USB to TTL Serial cable (https://www.adafruit.com/product/954)
I think the SoC still seems to be working, I've flashed an ARM linux (Dietpi) to an SD card and when I powered on the Nano Pi Neo Air, it seems to have successfully expanded its filesystem.
With UART0 most probably dead, I wonder whether UART1 and UART2 would still work. Connecting a working USB/TTL serial cable to the board did not produce any output, my guess is that it needs to be enabled for the boot process.
As I don't have another Allwinner H3 board available at the moment (shipping takes weeks for us Europeans to arrive) I wonder if there's a way for me to enable UART1 and UART2 during boot. Did anyone manage to do this?
Also, if you have an idea how to get the board to connect to the wifi during boot (without having access to a console), please let me know. Your help would be greatly appreciated.
Thank you!
I think the SoC still seems to be working, I've flashed an ARM linux (Dietpi) to an SD card and when I powered on the Nano Pi Neo Air, it seems to have successfully expanded its filesystem.
With UART0 most probably dead, I wonder whether UART1 and UART2 would still work. Connecting a working USB/TTL serial cable to the board did not produce any output, my guess is that it needs to be enabled for the boot process.
As I don't have another Allwinner H3 board available at the moment (shipping takes weeks for us Europeans to arrive) I wonder if there's a way for me to enable UART1 and UART2 during boot. Did anyone manage to do this?
Also, if you have an idea how to get the board to connect to the wifi during boot (without having access to a console), please let me know. Your help would be greatly appreciated.
Thank you!