EVBUM2306/D
www.onsemi.com
19
Live Video Stream Cuts Out for 2−3 Seconds
When the live video stream is started (the web GUI is
launched), either in a particular web-browser or VLC
streamer, the live stream might cut out for 2−3 seconds and
then come back on again. This is a known issue due to an
internal buffering problem in the VLC web plug in.
All of the Correct Cables are Connected. Why isn’t the
MatrixCam VDK Appearing Over LAN/Wi-Fi?
The MatrixCam VDK is most likely not woken up yet.
Using the “nRF Toolbox” app via Bluetooth or waving your
hand in front of PIR sensor will “wake” the device up. Allow
around 30 seconds for the MatrixCam VDK to show up in
your internet connection list.
In the Recording Section, Will the Video Stop
Recording after the Recording Duration?
How Do I Set Up the Camera to Record Indefinitely
while Overwriting Previous Data?
In “Configuration” −> “Recording” −> “Media Storage”,
you should see a check box in the SD card section labeled
“SD Card file overwrite on card full”. With this box enabled
you should be able to leave the camera recording
indefinitely while past videos/pictures are overwritten by
newer videos/pictures.
When the MatrixCam VDK Wakes Up because of
a Motion Trigger via the PIR Sensor Sometimes Videos
are Not Recorded to the microSD Card
If a serial port communication terminal is connected to the
debug micro-USB port of the MatrixCam VDK, there is
known hardware bug with the DM368 that cannot mount the
microSD card correctly during reboot. This causes no videos
to be recorded. The solution is to disconnect the terminal
from the MatrixCam VDK while a motion trigger wakeup is
in progress.
Things to Avoid
There are a few improper actions by applying them one
can corrupt the current system firmware and/or GainSpan
Wi-Fi module firmware. In general, “the most sensitive”
items in the GUI interface are network settings (“Network”
tab under “Configuration” menu) and firmware
maintenance (“Maintenance” tab under “Configuration”
menu).
Example 1: Lost Connection due to Improper Network
Connection Configuration
Let us consider this particular case. The MatrixCam VDK
IP address is set to static (192.168.1.168) and the
MatrixCam VDK works as expected. If static IP address is
changed to DHCP mode you will lose connection to the
MatrixCam VDK if you confirm this change and the same
time you do have your DHCP server/router configured
correctly. To resolve this issue, you have to properly
configure your router and try again to connect to the
MatrixCam VDK with the assigned DHCP IP address. In
case you do not use/have a router, follow the steps below to
restore “IP Settings” back to static IP address:
1. Install terminal program for particular operational
system (see the section below for more details).
2. Type “root” to the command line
(DM368_IPNC login: root).
3. Then type “rm –rf /mnt/nand/config/”
to the command line
(root@DM368_IPNC: rm –rf /mnt/nand/config/).
4. This command deletes DHCP setting in the GUI
interface. You should now be able to access the
MatrixCam VDK via static IP address.
Example 2: The System Firmware Corruption and How to
Restore the GUI Interface
Let us consider this particular case. User follows the
system firmware upgrade steps (see the particular section
above for more details), however, for some reasons the file
system image is either damaged or named inappropriately.
The result is the system firmware corruption that makes the
GUI interface no more accessible. To resolve this issue, one
has to boot the system firmware from microSD card which
is included with the MatrixCam VDK package release. This
is a part of the release package available with your product.
Follow the instructions in <MatrixCam_Base Folder>/
System Upgrade/sdutils/sd_boot_readme.txt
Steps to Install Terminal Emulator Program
Windows System:
1. Install Teraterm Software (freeware) from internet
(for instance:
http://logmett.com/index.php?/
download/tera−term−487−freeware.html
).
2. Connect the Console USB Cable.
3. Click on Setup in Menu bar.
4. Select the USB Console COM port (usually
COM15).
5. Select Baudrate as 1152000 under Setup −> Serial
Port. No other changed are needed.
6. Click on OK to confirm the changes.
7. Logs of the DM368 will start to come after the
board is booted up.
Linux System:
To install minicom to a Linux OS, type “sudo apt−get
install minicom”. Follow the steps below:
1. Type in the terminal “sudo minicom −s”.
2. Select “Serial Port Setup “and Press Enter.
3. Press Shift + A, Enter the Serial Device
“/dev/ttyUSB0”.
4. Press Enter Key.
5. Select “Save setup as dfl”. Press Enter.
6. Select Exit and press Enter key.
7. Reboot the Board.
8. Logs will get to display on the terminal.
