Difference between revisions of "10393 manual"

Revision as of 16:44, 23 June 2017

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 (default: 18-75V, 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

GStreamer

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

• mjpeg and rtsp
• playback latencies (gstreamer)

1080p - ~70ms

• 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

• 20170531
• 20170124

Other info

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/

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