Using the Beaglebone PRU to achieve realtime at low cost
http://www.embeddedrelated.com/showarticle/586.php
Using the C language to program the am335x PRU
https://www.embeddedrelated.com/showarticle/603.php
BeagleBone Black PRU: Hello World
http://mythopoeic.org/bbb-pru-minimal/
BeagleBone BlackのPRUを試す
http://mitaka1954.cocolog-nifty.com/blog/2014/03/beaglebone-blac.html
BBB - Working with the PRU-ICSS/PRUSSv2
http://www.element14.com/community/community/designcenter/single-board-computers/next-gen_beaglebone/blog/2013/05/22/bbb--working-with-the-pru-icssprussv2
PRU tips: Understanding the BeagleBone's built-in microcontrollers
http://www.righto.com/2016/08/pru-tips-understanding-beaglebones.html
