{"id":234219,"date":"2024-09-29T20:26:35","date_gmt":"2024-09-29T20:26:35","guid":{"rendered":"https:\/\/www.emtrion.de\/can-on-dimm-am335-under-linux-2\/"},"modified":"2024-10-24T07:35:38","modified_gmt":"2024-10-24T07:35:38","slug":"can-on-dimm-am335-under-linux-2","status":"publish","type":"page","link":"https:\/\/www.emtrion.de\/en\/can-on-dimm-am335-under-linux-2\/","title":{"rendered":"CAN on DIMM-AM335 under Linux"},"content":{"rendered":"

<\/a>DCAN<\/h1>\n
\n

The DIMM-AM335x features two CAN interfaces d_can0 and d_can1. Both are accessible on the baseboard Verno.<\/p>\n

d_can0 is connected to the D-SUB connector J15. d_can1 is connected to the pin header J20.<\/p>\n

Each interface can be enabled separately by the kernel parameter d_can in U-Boot. The commands on U-Boot are the following.<\/p>\n

setenv d_can 'value'<\/pre>\n
saveenv <\/pre>\n
What value to set for the appropriate interface shows the table below.<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
d_can<\/th>\nd_can0<\/th>\nd_can1<\/th>\nRemarks<\/th>\n<\/tr>\n
0<\/td>\n–<\/td>\n–<\/td>\n <\/td>\n<\/tr>\n
1<\/td>\nx<\/td>\n–<\/td>\ndefault<\/td>\n<\/tr>\n
2<\/td>\n–<\/td>\nx<\/td>\n <\/td>\n<\/tr>\n
3<\/td>\nx<\/td>\nx<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
 <\/p>\n
 <\/p>\n
The driver interface complies with the SocketCAN interface. There is general documentation for SocketCAN available in the Linux kernel tree at https:\/\/www.kernel.org\/doc\/Documentation\/networking\/can.txt<\/a>.<\/p>\n
For basic testing you can use the canutils:<\/p>\n
For example: d_can0<\/p>\n
# Configuration(if you reconfig the bitrate, you have to stop the interface before)<\/p>\n
canconfig can0 bitrate 100000 ctrlmode triple-sampling on<\/pre>\n
# Starting<\/p>\n
canconfig can0 start<\/pre>\n
# Sending 8 data bytes ten times<\/p>\n
cansend can0 -i 0x10 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88 --loop=10<\/pre>\n
# Receiving on a configured and started can1<\/p>\n
candump can1<\/pre>\n
# Stoping<\/p>\n
canconfig can0 stop<\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
DCAN The DIMM-AM335x features two CAN interfaces d_can0 and d_can1. Both are accessible on the baseboard Verno. d_can0 is connected to the D-SUB connector J15. d_can1 is connected to the pin header J20. Each interface can be enabled separately by the kernel parameter d_can in U-Boot. The commands on U-Boot are the following. setenv d_can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-234219","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nCAN on DIMM-AM335 under Linux - emtrion<\/title>\n<meta name=\"description\" content=\"CAN support on DIMM-AM335 under Linux: Two CAN interfaces (d_can0, d_can1) via SocketCAN. 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