TQMa93xxLA - YOCTO Linux BSP documentation
CAN
The MBa93xxLA provides the CAN interfaces CAN1 and CAN2.
CAN configuration
DIP switch S4 is used to configure the CAN1 interface.
| Funktion | S4-1 | S4-2 |
|---|---|---|
| CAN-Bus not terminated | OFF | OFF |
| not defined (illegal state) | OFF | ON |
| not defined (illegal state) | ON | OFF |
| CAN-Bus terminated with 120 Ohm | ON | ON |
DIP switch S5 is used to configure the CAN2 interface.
| Funktion | S5-1 | S5-2 |
|---|---|---|
| CAN-Bus not terminated | OFF | OFF |
| not defined (illegal state) | OFF | ON |
| not defined (illegal state) | ON | OFF |
| CAN-Bus terminated with 120 Ohm | ON | ON |
CAN Loopback
CAN Loopback Test
CAN1 (Hardware) -> CAN2 (Hardware)
In Linux, this corresponds to can0 sending to can1:
candump can1 & cansend can0 5A1#1122334455667788
CAN2 (Hardware) -> CAN1 (Hardware)
In Linux, this corresponds to can1 sending to can0:
candump can0& cansend can1 5A1#1122334455667788