Revision as of 11:14, 23 September 2013

BeagleBone Black

Getting Started

BeagleBone Black Info

Bone 101

Working with Git

http://alistapart.com/article/get-started-with-git

http://git-scm.com/book/ch2-5.html

http://nvie.com/posts/a-successful-git-branching-model/

Working with Device Trees

http://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree/device-tree-overlays

https://docs.google.com/document/d/17P54kZkZO_-JtTjrFuVz-Cp_RMMg7GB_8W9JK9sLKfA/pub

http://blog.inbedded.net/blog/2013/06/02/beaglebone-black-and-lcd-equals-fun/

pins.txt

https://github.com/selsinork/beaglebone-black-pinmux/blob/master/pinmux.ods

Programmable Realtime Unit (PRU)

http://blog.boxysean.com/2012/08/12/first-steps-with-the-beaglebone-pru/

C++ Programming

http://circuitco.com/support/index.php?title=C/C%2B%2B_Programming

GPIO

http://robotic-controls.com/learn/beaglebone/beaglebone-black-built-leds

Machine Kit

https://github.com/cdsteinkuehler/MachineKit

http://bb-lcnc.blogspot.com/2013/07/adding-homelimit-switches.html

Machine Vision

http://www.youtube.com/watch?v=8QouvYMfmQo

sudo apt-get install v4l-utils

v4l2-ctl --list-devices

v4l2-ctl --all

v4l2-ctl --list-ctrls

v4l2-ctl --set-ctrl=brightness=200

v4l2-ctl --list-formats

v4l2-ctl --set-fmt-video=width=1920,height=1080,pixelformat=H264

cd /home/linuxcnc

git clone git://github.com/derekmolloy/boneCV.git

cd boneCV/

sudo apt-get install libv4l-dev

sudo apt-get install libopencv-dev

./build

Misc:

 # P9.31 GPIO3_14
 setp [PRUCONF](DRIVER).stepgen.00.steppin         0x8E

 The value above is given meaning by the PRU code, which uses the
 kernel numbering scheme, but offset by one so that 0x00 (the default
 value for all HAL signals) means don't do anything.  The details are:

 GPIO Pin Value:
 value = 32 * ( <GPIO_bank> + 1 ) + bit

 PRU Direct Output Bits:
 value = 32 * (4 + 1 ) + bit = 160 + bit = 0xA0 + bit

 So 0x8E = 142 = (32 * 4) + 14 = GPIO bank 3, bit 14

BeagleBone Black Dimensions

sudo -A su -c "echo BB-BLACK-LCNC-PBX-BB > /sys/devices/bone_capemgr.*/slots"

cat /sys/devices/bone_capemgr*/slots

sudo vim /boot/uboot/uEnv.txt

echo BB-BLACK-LCNC-PBX-BB >/sys/devices/bone_capemgr*/slots

watch --differences dmesg | tail

tail -f /var/log/messages