RS-485

The Pigeon computer is equipped with a single RS-485 port. The RS-485 port can be accessed under Linux as '/dev/ttyRS485' (the udev rule with this device name was added in the Raspbian image on November 7, 2016). In earlier versions, you could use '/dev/ttyUSB0'. In this case, when using another USB/UART device, the RS-485 port may not be assigned to '/dev/ttyUSB0'.

Useful commands

Check the configuration of the RS-485 port:

$ stty -a -F /dev/ttyRS485 

Transmit data to the RS-485 port:

$ echo "test" > /dev/ttyRS485 

Read data from the RS-485 port:

$ cat /dev/ttyRS485 

Serial communication

For serial communication tool usage instructions, see tio.