10393 manual

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Revision as of 16:07, 17 December 2016 by Oleg (talk | contribs) (→‎Change parameters)
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Important Notes

In the package

  • 10393 camera system
NC393-CS marked ports.jpeg
  • Power supply wall adapter (default: 18-75V, more information)
  • CAT6 network cable
  • μUSB-to-USB cable
  • Recovery μSD card

Power on

  • Plug in the power supply
  • Connect to LAN using the network cable

Notes

  • Boot time: ~40s
  • The default boot is from the on-board NAND flash. More information on available boot options and recovery boot.

Connections

NC393-CS marked ports.jpeg

Defaults

IP Address 192.168.0.9
User root
Password pass
  • The IP address is set in the /etc/elphel393/init_elphel393.py in the currenly mounted rootfs ("/").

init_elphel393.py

  • /etc/elphel393/init_elphel393.py


Command line access

ssh root@192.168.0.9

Serial console access

  • Use a microUSB-USB cable to connect to PC - the cable's end should be thin enough otherwise interferes with the micro SD card.
  • Linux: minicom -c on
    • likely device: /dev/ttyUSB0
    • settings: 115200 8N1, no for hardware/software flow control

Get images

channel 1: http://192.168.0.9:2323/img

channel 2: http://192.168.0.9:2324/img

channel 3: http://192.168.0.9:2325/img

channel 4: http://192.168.0.9:2326/img

Video

Display

Multipart JPEG stream

http://192.168.0.9:2323/mimg
http://192.168.0.9:2324/mimg
http://192.168.0.9:2325/mimg
http://192.168.0.9:2326/mimg

GStreamer

gst-launch-1.0 souphttpsrc is-live=true location=http://192.168.0.9:2323/mimg ! jpegdec ! xvimagesink

Record

  • More info
  • If the prefix parameter, which is absolute path + prefix, for a channel is not set the file will be written somewhere to rootfs (likely /usr/local/verilog/)

browser

Example 1: (provide a correct media mount point)

Example 2:

  • channel 0, /dev/sda1, w/o a file name prefix
    • setup:
http://192.168.0.9/camogm.php?chn=0&cmd=prefix=/mnt/sda1/;
    • start:
http://192.168.0.9/camogm.php?chn=0&cmd=start;
    • stop:
http://192.168.0.9/camogm.php?chn=0&cmd=stop;

command line

Example:

  • channel 2, /home/root, file prefix=test_, 1GB or 10min files whichever occurs first
    • setup and start (in one line):
echo "format=mov;status=/var/tmp/camogm2.status;prefix=/home/root/test_;duration=600;length=1073741824;start" > /var/volatile/camogm_cmd2
    • stop recording:
echo "stop" > /var/volatile/camogm_cmd2
sync

Change parameters

Temperature monitor

10393 hwmon.jpeg

Proper shutdown

  • if not properly shutdown - μSD might get corrupted (run sync at least)
shutdown -hP now

Firmware image

  • 20160804 (new)
    • root/pass
    • overlayfs enabled if rootfs is on flash - lower: /tmp/rootfs.ro, upper: /tmp/rootfs.rw - changes to the filesystem are made on:
reboot -f

or 

shutdown -hP now

or (most likely will work but correct work is not guaranteed) 

overlay_sync

Known problems

  • [solved] Vertical artifacts in jpegs. Images are ok at 100% quality. Fixed, testing.
  • http://192.168.0.9:232x/noexif/mimg - multipart jpeg displays corrupted frames from time to time. Reason: network bandwidth?
  • [solved] Sometimes on power-on (NAND flash boot) cannot mount the card's rootfs partition. Kernel Panics. Power off/on. Soft "reboot -f" works ok.
...
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)
...

More info

  • Changing exposure/quality/gains - can corrupt images - needs testing.
  • After rewriting rootfs to μSD card - some of the cards get a corrupted partition - re-partitioning (reformatting?) solves the problem.
On the camera the rootfs is mounted as RW and some of the files are changed (also links created) -
most of the changes are now moved to tmpfs but something might have been missed.


Notes

  • In case rootfs is on flash, it might make sense (or maybe not as the history is updated only once on session exit) to disable bash sessions command history - disable bash history
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