Thanks to Drew for sending in this lecture from BeagleBoard co-founder Jason Kridner on Programmable Realtime Units. Check out slides from the lecture here.
From talk at Chicago hackerspace, PumpingStationOne.org:
Jason Kridner, co-founder BeagleBoard.org and co-creator of BeagleBone,
gives an introduction to the PRUs (Programmable Realtime Units). These
microcontrollers on BeagleBone and BeagleBone Black offer powerful
capabilities for real-time applications.
I know it’s a long video so here are timestamps for topics:
00:00:00 Intro of Jason Kridner, BeagleBoard.org & BeagleBone
00:04:40 Intro to PRU (Programmable Realtime Unit) microcontrollers on
BeagleBone (What are they?; Why use them?; History; Example projects)
00:50:30 Intermission in PRU talk for Q&A
01:01:00 PRU talk per Jason’s slides continues: compiler support; hardware
architecture; linux driver support: uio_pruss versus remote_proc; PRU tools
01:21:30 PRU pins & pinmux; mini-lecture on Device Tree: history, board
files vs DT, DT structure, DT overlays, BeagleBone usage; Cape Manager
usage; migration from Cape Manager & Device Tree overlays to Cape Universal;
02:02:30 PRUspeak demo: BotSpeak interpeter on the PRU; PRUspeak is Google
Summer of Code project
02:22:30 Q&A: what will get you to use the PRU? C library? Arduino sketch
02:28:50 Using TI StarterWare C library to access peripherals from PRU;
license for StarterWare
02:41:45 END OF PRU TALK SLIDES; BEGIN general Q&A and ad-hoc demos
02:41:45 Cloud9 & Bonescript security; Cloud9 path config
02:50:30 BoneScript demo using Bone101 (runs on port 80 out of box)
02:54:00 Cloud9 new features: python, ruby
02:55:00 How bonescript communicates from browser using socket.io to node.js
02:58:00 Python modules: PyBBIO versus Adafruit BBIO
03:03:00 More Cloud9 features; userspace Arduino runs sketches on BBB
03:07:00 systemd: how the BBB handles init, services & logging
03:10:30 Bonescript: What’s new? What’s the dev roadmap?
03:19:30 How to upgrade kernel on Debian; How to load eQEP driver
03:23:30 Kernel: status on mainline progress, running 3.14, # patches not in
03:28:30 eCAP: enhanced capture and compare hardware peripherial
03:29:45 more Bonescript demos: graph analog input with flot, misc HTML
03:45:30 jsfiddle: easy way to run Bonescript examples
03:47:40 Google Summer of Code projects for BBB
03:56:00 New browser-based image updater
04:03:00 How to change beagle.local hostname? used for mDNS (aka zeroconf)
04:15:15 Suprise! BBB Black has a Virtual Serial Port
04:20:00 How to do 6LoWPAN networking on BBB
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