DHCOM STM32MP1 Linux: Difference between revisions
From Wiki-DB
Jump to navigationJump to search
Ageisreiter (talk | contribs) |
Ageisreiter (talk | contribs) |
||
| Line 27: | Line 27: | ||
|} | |} | ||
:'''Download example source code''' | |||
:* [[media:Tty_rs485_test.zip | tty_rs485_test.c]] | :* [[media:Tty_rs485_test.zip | tty_rs485_test.c]] | ||
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
- Download example source code
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
