Kontron KTAM3874-pITX - Manual (Page 31)

KTD-S0057-I Page 27 DebianTM Linux® BSP
KTAM3874/pITX Software Guide
6.5 CAN Bus Utilities (SocketCAN)
The directory /usr/bin contains all necessary CAN bus utilities you may need. An overview:
Utility Short Description
canbusload statistic tool
can-calc-bit-timing CAN baudrate calculation
candump shows the received message from the CAN bus, e.g. candump can0
canfdtest full-duplex test program (slave and host part)
cangen CAN frames generator for testing purpose
cangw CAN-to-CAN gateway to route (and modify) messages between multiple buses
canlogserver capture data as ASCII logfile format
canplayer send CAN frames from a file to a CAN interface
cansend send CAN-frames via CAN_RAW sockets, e.g. cansend can0 500#1E.10.10 (500 = CAN ID)
cansniffer capture and analyze CAN traffic
Additional information can be retrieved in the directory /proc/net/can . If you want to overwrite the default
baudrate of 500 kbps change the value in the file /etc/default/can0 resp. can1 or use the following com-
mands (example, requires root rights):
sudo ifconfig can0 down
sudo ip link set can0 up type can bitrate 125000
After boot up it is not necessary to enter the command ifconfig can0/can1 up because this is already done.
More information about SocketCAN can be found on following webpage:
http://www.mjmwired.net/kernel/Documentation/networking/can.txt
6.6 S-ATA ® Interface
The S-ATA ® port supports two interfaces: either the standard L-type connector J903 or the mSATA ® inter-
face on the mini PCI Express ® connector J900. After plug in a mSATA ® card the hardware switches automa-
tically from the connector J903 to J900 and disables the mini PCI Express ® lanes.
6.7 Suspend Mode
Some of TI's ® graphics drivers do not support the suspend/resume feature. Due to this limitation the board
cannot be put into suspend mode if graphics output is enabled and active.
To work around this limitation you must stop the X session and unload the graphics driver modules before
entering the suspend mode. When resuming load the modules first and start the X session afterwards.
6.8 Screensaver
The X screensaver overlays the Gnome TM screensaver. In order to solve this issue type xset s off in terminal
mode and press Enter.