DHCOM STM32MP1 Linux: Difference between revisions
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=== CAN interface === | === CAN interface === | ||
:'''Setup CAN interface with baudrate 500kbit/sec.''' | |||
:{| class="wikitable" | |||
|<tt>''ip link set can0 up type can bitrate 500000''</tt> | |||
|} | |||
:'''Start to listen on CAN port''' | |||
:{| class="wikitable" | |||
|<tt>''candump can0''</tt> | |||
|} | |||
:'''Send test message''' | |||
:{| class="wikitable" | |||
|<tt>''cansend can0 100#11.2233.44556677.88''</tt> | |||
|} | |||
:'''Deinitialize CAN port''' | |||
:{| class="wikitable" | |||
|<tt>''ip link set can0 down''</tt> | |||
|} | |||
Revision as of 06:52, 9 April 2020
Kernel Userspace Interfaces to Access Hardware
RS-485 on picoITX
- RS-485 device
DHCOM UART 2 /dev/ttySTM2
- Compilation on target
gcc tty_rs485_test.c -o tty_rs485_test
- Set tty device to raw mode
stty -F /dev/ttySTM2 115200 cs8 raw -echo
- Send data with demo program
./tty_rs485_test /dev/ttySTM2
- Receive data with demo program
./tty_rs485_test /dev/ttySTM2
CAN interface
- Setup CAN interface with baudrate 500kbit/sec.
ip link set can0 up type can bitrate 500000
- Start to listen on CAN port
candump can0
- Send test message
cansend can0 100#11.2233.44556677.88
- Deinitialize CAN port
ip link set can0 down
