record test info for logitech c525

[challenge-bot] / bbb / notes.org

* todo
  * add hostname and user in image type configuration
  * mdns avahi zeroconf bonjour not work? maybe wrong hostname
    * confirm that the only real problem was incorrect user and hostname
    * maybe http://elinux.org/RPi_Advanced_Setup search 'avahi'
    * also https://stackoverflow.com/questions/10537816/cannot-connect-to-beaglebone-local
  * set time on beagleboard based on host system time
  * set timezone on beagleboard based on host system timezone
  * get network up and running, share network through host system
    * do this during bbb boot
  * make a ~/bin dir, add it to path
    * add full-update.bash to ~/bin
  * initial setup on beaglebone should do
    * sudo aptitude install -y v4l-utils # for v4l2-ctl
    * sudo aptitude install pkg-config # for compiling
    * for opencv:
      * sudo aptitude install -y libopencv-dev
      * check whether libopencv-dev is the only package necessary
  * add ssh key to bbb image to make sshing easier
** trying to compile grabber.c from derek molloy
*** problem
**** what i did
gcc -O2 -Wall `pkg-config --cflags --libs libv4l2` grabber.c -o grabber

**** what i expected
compilation finishes and i can run grabber

**** what actually happened
Package libv4l2 was not found in the pkg-config search path.

**** potential solution
    sudo aptitude install -y libv4l-dev

***** did it work?
      * retrying compile
      * compile finished, created grabber!

** another problem, getting image from camera failed
*** problem
**** what i did
after compiling grabber, tried to run it

**** what i expected
grab images and maybe there would be a picture in the current directory

**** what actually happened
grabber ran for a bit and output the following:

"Warning: driver is sending image at 1280x720"

after waiting for a bit, killed grabber with C-c. no picture in the
current directory

**** possible solution
     * read source of grabber.c and look for anything out of
      ordinary.
     * saw that frame size was hard coded to 1920x1080
     * redid code to 640x480. recompiled the code
     * ran it, got no terminal output
     * killed it with C-c after a bit
     * saw grabber000.ppm

* TODO test out all cameras
** TODO test out c920 logitech hd pro webcam
*** TODO test out c920 on laptop
    * testing with laptop!
    * cheese shows video feed from device
    * when run streamer -c /dev/video1 -o foobar.ppm, next image from
      opencv-hello-world is messed up
      * when run multiple times in a row, opencv-hello-world gets correct
        image second time
*** TODO test out c920 on bbb
**** TODO test with debian 8.3 image
     unable to connect via debian@arm.local or ping 192.168.7.2
**** TODO test with debian 8.2 image
     * able to connect with debian@arm.local!
     * run full-update.bash
     * got it working by adding usbcore.autosuspend=-1 to cmdline in uEnv.txt
       * still need to throw away first image
     * trying kernel linux-{image,headers}-4.4.1-bone5
*** TODO test out c920 on bbg
**** TODO test with debian 8.3 image
     unable to connect via debian@arm.local or ping 192.168.7.2
**** TODO test with debian 8.2 image
** tested thinkpenguin basic webcam on bbg
*** /boot/uEnv.txt cmdline usbcore.autosuspend=-1
     tried with and without this option.  always select timeout
*** reloading uvcvideo with options
     * modprobe -r uvcvideo
     * modprobe uvcvideo nodrop=1 timeout=5000
     * did not get 'select timeout' but images were solid green with a
       thin line at the top of real image
** TODO recompile kernel with CONFIG_MUSB_PIO_ONLY=y
   might solve usb problems
   "This happens due to the not well working USB DMA mode in the
    Beaglebone. I disabled the DMA mode in the kernel (Cameras use
    USB ISO mode) and it worked well so far."
** test c525 on bbg
*** does not work on bbg
   light turns on, but get select timeout
   did not do uEnv.txt cmdline or reload uvcvideo mod
*** works fine on laptop
* TODO make sure license doesn't say "GNU Affero Emacs is distributed ..."
* doing
  * maybe just go with debian 8.2
  * systematically try all the images on all the boards
    * debian 8.3 lxde, debian 7.9 lxde, debian 7.9 console,
      debian 8.2 console 2016-01-14
    * BBB-eMMC-flasher-debian-7.9-console-armhf-2015-11-03-2gb.img
      * flashes BBB and BBG
      * leaves the board accessible via 192.168.7.2
      * unable to get to board with beaglebone.local
    * debian 8.2 console 2016-01-14
      * username:debian
      * pw:temppwd
      * BBG
        * flashes
        * boots after flash
        * no beaglebone.local
        * yes debian@192.168.7.2
      * BBB
        * flashes
        * boots after flash
        * no beaglebone.local
        * yes debian@192.168.7.2
    * debian 8.3 lxde
      * username:root
      * pw:
      * BBG
        * flashes
        * boots after flash
        * yes beaglebone.local
        * yes 192.168.7.2
      * BBB
        * flashes
        * boots after flash via power button, no need to pull usb cable
        * no 192.168.7.2
        * no beaglebone.local
* done