Re: debugging SAMA5D2 serial port issues

[Gregory Nutt]

I would look closely at the pins on the schematic and carefully verify 
how you have the Tx/Rx pins configured.
I'm working trying to get NuttX working on the SAMA5D2-XULT board. I can't
seem to get the UART1 serial port working with NuttX, or the FLEXCOM
USARTs.
NuttX seems to boot ok... I can load code via J-Link, and in the debugger
it lands in nsh_main. But there's no output on the serial console.

I can boot the board into U-Boot or yocto linux, and the UART1 console
works fine there, though.

Does anyone have any ideas on how I can determine what's wrong with the
USART or FLEXCOMs?