¶ Can Programming
In the User Manual section, we learned about the simple use of YY3588 can. In this section, we introduce the use of can to usb module for sending and receiving.
rk3588 chip does not support canfd
¶ 1 Hardware connection
The specific module is subject to the reader's use
- One end of USB is connected to the PC
¶ 2 Send and receive
¶ 2.0 Preparation
- Query the current network device
$ ifconfig -a
can0: flags=128<NOARP> mtu 16
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 10 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 71
......
- CAN startup:
# Shut down CAN:
$ ip link set can0 down
# Set bit rate to 500KHz:
$ ip link set can0 type can bitrate 500000
# Print can0 information:
$ ip -details -statistics link show can0
# Start CAN:
$ ip link set can0 up
¶ 2.1 YY3588 receives data
- Board receiving
$ candump can0
2. Send from PC
¶ 2.2 YY3588 Send Data
- Send from board
# Send standard frame, data frame
$ cansend can0 123#DEADBEEF
# Send standard frame, remote frame (demonstration module does not support remote frame, no demonstration here)
$ cansend can0 123#R
# Send extended frame, data frame
$ cansend can0 00000123#12345678
# Send extended frame, remote frame
$ cansend can0 00000123#R
2. PC side receiving
