PROCESSOR-SDK-AM62X: implement MCAN interface for external communication

Hello Vadivel,

In the MCU+SDK example, the loopback mode should be disabled (set as FALSE) in the MCAN configuration below:

https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/latest/exports/docs/api_guide_am62x/group__DRV__MCAN__MODULE.html#ga4b23ad6eb42ea29586b46b0f2b54714d 

https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/08_06_00_18/exports/docs/api_guide_am62x/group__DRV__MCAN__MODULE.html#gab6fa4cd4434caa25a02d245c4e2ff54a 

Also the below E2E thread is regarding the use of Main domain CAN, but I believe it can be used as reference for connections in your MCU-CAN use-case too:
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1196164/processor-sdk-am62x-testing-can-interface-on-am62x-sk/4517929


Since the AM62x board does not contain an on-board transceiver, it is required to connect an external CAN transceiver to the AM62x SK to test the full functionality of CAN.
Please refer to the below Linux guide for CAN external transceiver suggested part:
https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/08_05_00_21/exports/docs/linux/How_to_Guides/Target/How_to_test_MCAN_on_AM62x.html#transceiver-on-am62x 

Regards,
Krithika

Hi Krithika, 

I have followed CAN external transceiver page. I am getting following error when i execute the command\. 

Note: I am trying to do(setup/test) (M4f)MCU-CAN communication.   We are trying to do send the CAN data from MCU-CAN(m4f) to external viewer like PCAN-view, ..etc tool which connected to ext-transceiver and PC.

sitara-evm(m4f) --> Ex.Tranceiver(SN65HVD230) --> pcan_view --> pc (computer)

pcan-view:  www.amazon.com/.../

Step-1:

In: serial@2800000
Out: serial@2800000
Err: serial@2800000
Net: eth0: ethernet@8000000port@1
Hit any key to stop autoboot: 0
=>
=>
=> setenv name_overlays k3-am625-sk-mcan.dtbo
=> boot
switch to partitions #0, OK
mmc1 is current device
SD/MMC found on device 1
Failed to load 'boot.scr'
1490 bytes read in 2 ms (727.5 KiB/s)
Loaded env from uEnv.txt
Importing environment from mmc1 ...
Running uenvcmd ...
1 bytes read in 2 ms (0 Bytes/s)

Step-2: As per the CAN external transceiver page instruction

root@am62xx-evm:/opt/harman# ip link set can0 down
Cannot find device "can0"
root@am62xx-evm:/opt/harman# ip link set can0 type can bitrate 125000
Cannot find device "can0"
root@am62xx-evm:/opt/harman# ip link set can0 up
Cannot find device "can0"
root@am62xx-evm:/opt/harman#

Regards, 

Vadivel