Enable UART2 On BeagleBone Black for RS232 Cape

30 Dec 2013

1. Use this script to ensure UART2 is enabled in the device tree: https://github.com/victorporof/BeagleBone-SPI-UART
2. Enable ttyO1 it in the firmware using this guide (makes the device appear): http://www.element14.com/community/blogs/mirandasoft/2013/07/30/beaglebone-black-rapid-activation-of-ttyo1-ttyo2-ttyo4-and-ttyo5
3. Put a paperclip into the RS232 port like in the picture on this page: http://sensorsblog.com/serial-communications/rs232loopbacktest/
4. echo hello > /dev/ttyO1
5. cat /dev/ttyO1