Difference between revisions of "BeagleBone"

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(Run a Script on Login (Start a Service))
(Make a Shell Script)
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=Run a Script on Login (Start a Service)=
 
=Run a Script on Login (Start a Service)=
 
==Make a Shell Script==
 
==Make a Shell Script==
launches a python script as detached screen session
+
'''launch_mirror.sh''' - launches a python script as detached screen session
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
#!/bin/bash
 
#!/bin/bash
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/usr/bin/screen -dmS mirror /home/root/convexmirror/convex_mirror.py
 
/usr/bin/screen -dmS mirror /home/root/convexmirror/convex_mirror.py
 
</syntaxhighlight>
 
</syntaxhighlight>
 +
 
==Make a Service==
 
==Make a Service==
 
http://www.nunoalves.com/open_source/?p=308
 
http://www.nunoalves.com/open_source/?p=308

Revision as of 11:24, 30 November 2013

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Setup

Copy OS to microSD card

  • Download OS (.img.xz)
  • unzip
  • figure out what your card is. check df before and after inserting the card:
df -h
  • unmount the drive:
diskutil unmountDisk /dev/disk2s1
  • copy image to drive:
dd if=Angstrom-Cloud9-IDE-GNOME-eglibc-ipk-v2012.12-beaglebone-2013.06.20.img of=/dev/rdisk2 bs=1m

Default boot from SD card

  • boot beaglebone while holding the S2 button (by SD card reader). this boots from the sd card.
  • move the MLO file from /media/BEAGLEBONE/ to a safe place:
mkdir backup
mv /media/BEAGLEBONE/MLO backup
  • The beaglebone will now boot from microSD until you replace the MLO file.

What Kernel am I running

  • uname -a

other

Debugging

TTL Cable

954bbb_MED.jpg

(RED IS NOT CONNECTED)

ssh not working

want to allow processes to keep running?

OpenCV

python-opencv

  • install python opencv bindings:
opkg install python-opencv

potrace

gphoto2

  • install libusb-1.0-dev
opkg install libusb-1.0-dev
./configure
make
make install

GPIO

PyBBIO

other

gpio - http://beaglebone.cameon.net/home/using-the-gpios

Hardware

C920

capture

streaming

dash cam

Servo

Serial Communication

Ubuntu

Angstrom

  • update opkg:
    • opkg update
  • install pyserial:
    • opkg install python-pyserial

Pockesphinx

Audio

  • purchase usb sound card.
  • connect stereo microphone.
  • record audio with arecord:
    • arecord -D sysdefault -t wav -c 2 -r 44100 -f S16_LE -v binaural2.wav
  • play audio:
    • aplay binaural2.wav
  • use the ALSA mixer to set recording levels, output levels, etc.:
    • alsamixer

Debian

Installing Ubuntu

Curses

  • install python-curses:
    • opkg install python-curses

Run a Script on Login (Start a Service)

Make a Shell Script

launch_mirror.sh - launches a python script as detached screen session

#!/bin/bash

cd /home/root/convexmirror
/usr/bin/screen -dmS mirror /home/root/convexmirror/convex_mirror.py

Make a Service

http://www.nunoalves.com/open_source/?p=308 http://kezhong.wordpress.com/2011/11/19/creating-my-own-systemd-service-files-on-fedora-16x86_64/

Other