Dave Pfaltzgraff

I had seen that suggestion elsewhere, but we anticipate using the BT capability later in this project. Thanks for the suggestion.4 I have been able to get UART4 to work on the new pins.

The problem is that /dev/ttyS0 on the Raspberry Pi does not support parity. So, the value returned after tying to set termios is correct. Will need to work up support for one of the other UARTs on the Pi. Looks like UART4 (/dev/ttyAMA3) will work for me.

Problem with /dev/ttyS0 on Pi 4B+