Hi,
I have been going round in ever decreasing circles for the past few days trying to connect to the serial port on the GPIO.
I have installed PySerial and I have tryed to add the pi user to the dialout group with:
sudo usermod -a -G dialout pi
which returns without error.
When I try to connect to '/dev/ttyS0' i get file or directory not found.
I have tried '/dev/ttyAMA0' and get permission denied
1) which is the correct device name to use?
2) How do I get permission to open it?
Thanks,
Steve