TMDS64EVM: How to MCAN loopback.

Hello, is this an internal loopback or external loopback example? 

Regards, 

Aparna

Hello Aparna Patra.

Thank you for your reply.

Aparna Patra said:

Hello, is this an internal loopback or external loopback example? 

This is internal loopback.

In the sample code, the expected MCAN_getIntrStatus at interrupt time is 0x20088200.

I would like to know why the status is 0x00008280.

Best regards,

Kiyomasa Imaizumi.

Hello, 

The A53 RTOS support has not been tested by us. However, the interrupt number needs to be checked, which sometimes may vary. I will verify this and let you know.

Regards,
Aparna

Hello Apama Patra.

Please tell me under what circumstances the RF1L bit (Rx FIFO 1 message lost) of the MCAN_IR Register becomes 1, what should be investigated, and what the possible causes are.

Please reply as soon as possible.

Best regards,

Kiyomasa Imaizumi.

Hello Apama Patra.

The interrupt number is 187 (MCAN0_MCANSS_MCAN_LVL_INT_0) and the handler is called correctly.

Best regards,

Kiyomasa Imaizumi.

Hello Kiyomasa Imaizumi,

Please check for the FIFO full condition, if the FIFO 1 is full and a new message is received that cannot be stored, the RF1L bit will be set.

Regards,
Aparna

Hello Apama Patra.
Thank you for your reply.

How can I check the FIFO full condition?
Do I check a register value somewhere, or use an API?
Please tell me how to do it.

Best regards,
Kiyomasa Imaizumi.

Hello Apama Patra.

I checked MCAN_RXF0S, MCAN_RXF1S, but register value is 0x00000000.

Best regards,

Kiyomasa Imaizumi.

Hello Apama Patra.

I rechecked MCAN_RXF1S register, the value is 0x02000000.
Why is the RF1L bit set even though this is a loopback program?

Best regards,
Kiyomasa Imaizumi.

Hello Aparna Patra.

Thank you for your reply.

I looked at my code again.
I wasn't calling MCAN_addStdMsgIDFilter.
When I added it, it worked properly.

Thank you.

Best regards,

Kiyomasa Imaizumi.