Difference between revisions of "10393 manual"

Revision as of 16:27, 19 January 2018

Important Notes

• As of 2016/12/15, the software ported from 10353 supports only 5MPix sensors, for 14MPix, please see:
  • older version of this manual with links to older software images

In the package

• 10393 camera system

Fig.1 10393 interfaces

• Power supply wall adapter (options: 18-75V (default) or 12-36V - more information)
• CAT6 network cable
• μUSB-to-USB cable
• Recovery μSD card
• If the camera is calibrated the calibration data will be on a separate storage media or on the internal SSD (likely /mnt/sda1)

Interfaces

See Fig.1:

Power on

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

Notes

• Boot time: ~30s
• The default boot is from the on-board NAND flash. More information on available boot options and recovery boot.

Defaults

• The default IP address is set in the /etc/elphel393/init_elphel393.py.
• If present the internal SSD will be formatted into 2 partitions:
  • /dev/sda1 - ext4 (~64-100GB)
  • /dev/sda2 - raw partition (no file system) for fast recording

Command line access

• ssh from PC terminal:

$ ssh root@192.168.0.9

Serial console access

• Use a microUSB-USB cable to connect console μUSB port (see Fig.1) to PC - the cable's end should be thin enough otherwise interferes with an inserted mmc (multi media card = μSD card).

• In Linux the minicom program can be used

$ minicom -c on

Most likely the device will be /dev/ttyUSB0. Settings:

• 115200 8N1, no for hardware/software flow control

Refer to the following article for more details on using minicom: Using minicom to connect to Elphel393 camera

Web user interface (camvc)

http://192.168.0.9/ (if not found - http://192.168.0.9/closeme.html (type in the browser address bar - will be changed soon)):

• The page contains links to camvc user interface for each individual camera port.
• camvc was ported from the 10353 camera series:
  • change parameters like image format, resolution, auto exposure, auto white balance and more. Alternative way to change parameters is described below.
  • pause compressor and search within buffered images
  • help tips available - see Fig.2 - select then mouse over a control element of interest

Fig.2 enable camvc help tips

Fig.3 camvc controls

Download live images

camvc

• For a currently opened port (displayed in the window title and as "...sensor_port=0..." in the URL):

Fig.4 Acquire an image from the Camera Control Interface

browser

port 0: http://192.168.0.9:2323/img
port 1: http://192.168.0.9:2324/img
port 2: http://192.168.0.9:2325/img
port 3: http://192.168.0.9:2326/img

command line

wget http://192.168.0.9:2323/img -O filename.jpeg
wget http://192.168.0.9:2324/img -O filename.jpeg
wget http://192.168.0.9:2325/img -O filename.jpeg
wget http://192.168.0.9:2326/img -O filename.jpeg

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

RTSP

• turn on:

~root@elphel393:~# /usr/bin/str

• url:

rtsp://192.168.0.9:554
rtsp://192.168.0.9:556
rtsp://192.168.0.9:558
rtsp://192.168.0.9:560

GStreamer

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

• mjpeg and rtsp
• More examples at Using GStreamer

Record

• Recording is done by the camogm program
• If recording to internal or external SSD, please, read about eSATA port switching
• important: Event logger (GPS, IMU, IMG, EXT) recording is started/stopped separately. See instructions below.
• For SATA devices camogm supports:
  • recording to a partition with a file system - up to 80MB/s
  • (default) faster recording to a partition without a file system (raw partition) avoiding OS calls - up to 220MB/s
• To extract data from a raw partition use dd or these scripts to get the data and split it into images. Follow this link for details.
• Can record to an mmc partiton or usb.
• 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.
  • if prefix is empty then the absolute path must end with a slash.

browser

Example 1: (provide a correct media mount point - /mnt/sda1/)

Follow this link for GUI description.

command line

Example:

echo "format=mov;status=/var/tmp/camogm.status;prefix=/home/root/test_;duration=600;length=1073741824;start" > /var/volatile/camogm_cmd

echo "stop" > /var/volatile/camogm_cmd
sync

Event Logger (GPS, IMU, IMG & EXT)

• More information

Record

web

• Start:

http://192.168.0.9/logger_launcher.php?cmd=start&file=/mnt/sda1/test.log&index=1&n=10000000

• Stop:

http://192.168.0.9/logger_launcher.php?cmd=stop

• Help:

http://192.168.0.9/logger_launcher.php

command line

• start:

root@elphel393:~# cat /dev/imu > /path/filename.log

• stop - CTRL-C or kill the process

Read

• http://192.168.0.9/read_imu_log.php (will display help)
  • on the first access creates /www/pages/logs/ (http://192.168.0.9/logs/)
  • link the recorded logs to /www/pages/logs/
  • refresh http://192.168.0.9/read_imu_log.php

Change parameters

• http://192.168.0.9/autocampars.php - save/restore/initialize camera/sensor parameters

More information

• http://192.168.0.9/parsedit.php - read/write parameters:
  • POST request

Read:   http://192.168.0.9/parsedit.php?sensor_port=0&PAR1&PAR2
Change: http://192.168.0.9/parsedit.php?sensor_port=0&PAR1&PAR2 - update values - submit form

• • GET request - XML response

Read:   http://192.168.0.9/parsedit.php?immediate&sensor_port=0&PAR1&PAR2
Change: http://192.168.0.9/parsedit.php?immediate&sensor_port=0&PAR1=VAL1&PAR2=VAL2

Note 1: if the parameter's value is specified in URL it will be applied. The call can have mixed specified and unspecified parameters.

Note 2: The new value is read on the next call.

Example:

• set 10 fps and enable output trigger signal

http://192.168.0.9/parsedit.php?sensor_port=0&immediate&TRIG_CONDITION=0&TRIG_OUT=0x66555&TRIG_PERIOD=10000000&TRIG=4

More information

Notes:

• parsedit.php and autocampars.php were ported from 353 camera series. There are a few changes from the originals related to 4x sensor ports:
  • parameters are individual for each sensor port - writing parameters to multiple port at once is controlled with a (bit-)mask input box
  • if opened w/o sensor_port specified the page will show links to available ports
  • sensor_port=x, where x=0..3 - in the address string - for a single sensor camera it is normally 0

Image formats

jpeg

• color: YCbCr 4:2:0, 3x3 pixels
• mono6: monochrome - color YCbCr 4:2:0 with zeroed out color components
• mono : monochrome - color YCbCr 4:0:0 with omitted color components

Note: Is not the best for processing since a lot of information is lost at demosaicing

jp4 raw

• More information

Temperature monitor

• http://192.168.0.9/hwmon.html:
  • T_shutdown - automatic shutdown temperature level (default is 90°C)

eSATA port switching

• requres 10389
• available connections:
  • camera <=> internal SSD (default)
  • camera <=> external drive (external drive will need a separate power source)
  • PC <=> internal SSD
• More information

Proper shutdown

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

shutdown -hP now

Same effect:

http://192.168.0.9/autocampars.php?reboot

Firmware/software update

More information

Firmware images

• 20180118
• 20180116
• 20180109
• 20171120
• 20171115

Other info

Change default ip address

• nano or vi

ssh root@192.168.0.9
pass
root@elphel393:~# nano /etc/elphel393/init_elphel393.py
edit - save

or

• sed

root@elphel393:~# sed -i.bkp 's/192.168.0.9/10.xx.xx.xx/' /etc/elphel393/init_elphel393.py
root@elphel393:~# sed -i.bkp 's/255.255.255.0/xxx.xxx.xxx.xxx/' /etc/elphel393/init_elphel393.py

Then:

#boot from NAND flash?
root@elphel393:~# overlay_sync 1 
root@elphel393:~# shutdown -hP now
#powercycle

#boot from card?
root@elphel393:~# sync
root@elphel393:~# reboot -f

Set up histogram window and autoexposure parameters

Read article

Tools for calibrated systems

• Install ImageJ plugins
  • decode jp4 raw format
  • aberrations correction
  • distortion correction (pixel mapping)
  • rectification and projection
  • JP46 Reader camera - decode JP4/JP46
  • Eyesis correction - post-process JP4s using calibration data

Switch between ERS and GRR modes in MT9P006

• Read article

External/internal trigger and FPS control

• Trigger_393

SSD/MMC/USB formatting

• Format_SSD_MMC

Boot modes

• Boot options

Pointers monitor

• Displays sensor, compressor and buffer states per 10393 port:

http://192.168.0.9/pointers/

Powering from batteries (12V or 48V)

12V and 48V power options

Accessing raw pixel values

Working with raw pixel data

Photo finish (linescan mode)

Photo Finish (works for JP4 image format)

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

• When using overlays, deleting, existing in the lower layer, dirs can cause errors (hopefully it gets fixed someday), example:
  • /mnt/sda1 exists in lower layer: /tmp/rootfs.ro/tmp
  • upper layer is mounted to "/"

# rmdir /mnt/sda1
# mkdir /mnt/sda1
mkdir: cannot create directory '/mnt/sda1': Operation not supported