Critical Link MityDSP-L138 User manual

Copyright © 2018, Critical Link LLC
60-000017-1_RevA
Thank you for choosing the MityDSP-L138 Development Kit from Critical Link.
In this Quick Start Guide you will be guided through the initial steps of setting up your MityDSP-L138
Development Kit. A Linux Operating System is pre-loaded onto the NAND and will showcase many of
the Development Kits features such as
The MityDSP-L138 Development Kit contains the following:
Provided Hardware:
Industrial IO baseboard with:
oMitySOM/MityDSP System on Module (ie. MitySOM-1810, MitySOM-1808, MityDSP-
6748F or MityDSP-L138 series)
oAudio Input and Output
oDVI Output
o10/100 Networking
oCAN Bus Interface
oUART Expansion Port
oMore!
6 ft Null Modem Cable M/F Serial cable
10 pin DB-9 Serial Adapter Cable
5 ft UTP Ethernet Network Cable
JTAG Rigid PCA
AC/DC 12V 1.2A adapter
2.1mm DC Jack Pigtail Cable
USB Flash Drive
oLinux Software Development Kit including Virtual Machine
oDevelopment Kit Documentation
Software and documentation:
Linux Software Development Kit (SDK) and readme.pdf
MityDSP-L138 Development Kit Data Sheet
MityDSP-L138 Development Kit Schematics
MityDSP-L138 Development Kit Bill of Materials
MityDSP-L138 Development Kit Gerber Files

Copyright © 2018, Critical Link LLC
60-000017-1_RevA
Default Setup (Boot from On-SOM NAND)
1) Install the L138 Module into connector J101
on the Dev Kit.
Figure 1: Installing L138 Module
2) Install the DC Power Jack Pigtail 2.1mm into
the power input plug, J600 on the Dev Kit. The
12 VDC power supply plugs into this adapter.
Figure 2: Installing Power Jack Pigtail Cable Asy.
3) Connect the Serial Adapter, 10 pin to DB-9,
into connector J502 on the Dev Kit.
Figure 3: Installing 10 pin to DB-9 Serial Adapter
Cable
4) Connect provided Null Modem Serial Cable
into the Serial Adapter previously connected
to Dev Kit. Note: If you wish to use a
different Serial Cable be sure the cable is
Null Modem or has a Null Modem adapter.
5) Install an Ethernet cable into J200 on the Dev
Kit.
Figure 4: Installing Ethernet connection
6) The Dev Kit is ready to boot. Once the Dev kit
is connected to a PC, a serial port application,
like teraterm, needs to be configured for
115200 baud rate, 8 data bits, no parity, 1
stop bit and no flow control to communicate
with the SOM.
7) Once the SOM is booted, the serial
connection application will look like figure 5.
The login is “root”; there is no password.
Figure 5: SOM Login screen

Copyright © 2018, Critical Link LLC
60-000017-1_RevA
8) If you have had no problems up to now your
board is ready to use.
9) Connect the provided USB Flash drive to the
PC and follow the steps in this link to bring up
your Virtual Machine(VM):
https://support.criticallink.com/redmine/proj
ects/arm9-platforms/wiki/Starter_Guide
The VM username is “mitydsp”: the VM
password is “mitydsp”
10) Once the SOM is booted and you have logged
in, if the SOM is connected to a network,
typing “ifconfig” in the terminal will give the
SOMs current IP address. Using an application
like putty will let you ssh into the device using
the discovered ip address.
11) Using the Virtual Machine just set up and
following the steps here:
https://support.criticallink.com/redmine/projects/arm
9-platforms/wiki/Updating_devkit_to_latest_MDK ,
the files on the L138 can be updated. If you
want to boot from an SD card follow the
instructions here:
https://support.criticallink.com/redmine/projects/arm
9-platforms/wiki/Linux_Root_File_System under
Booting off MMC / SD Card.

Copyright © 2018, Critical Link LLC
60-000017-1_RevA
MitySOM/MityDSP Development Kit
Quick Start Guide
For more details visit
www.criticallink.com