Hi Alex,

alex dchk said:

I'm playing with mcan_external_read_write.

Where did you obtain this code?

Regards,
Frank

I downloaded it from TI github

Hi Alex,

From what I can determine, this example isn't supported on the AM263x Lauchpad: https://github.com/TexasInstruments/mcupsdk-core/tree/next/examples/drivers/mcan/mcan_external_loopback_interrupt

Looking at AM263x MCU+SDK docs, I don't see this example mentioned: https://software-dl.ti.com/mcu-plus-sdk/esd/AM263X/08_05_00_24/exports/docs/api_guide_am263x/EXAMPLES_DRIVERS.html

How are you connecting MCAN0/1 on the LP? I see only MCAN0 is connected to a transceiver.

Regards,
Frank

Hi Frank,

It already available in 08.06.00 version of SDK. I have checked this example and it's works properly. I used freertos one. But there is an issue. This example supposed to receive 10 messages, and after it, task which is do Tx\Rx cycle is delated. But if there is even one more message, problem appears. Task already deleted, so no options are available for processing additional messages.

After next run of the program, it remains in the hardware interrupt and never reach the main context. I tried to clear status of interrupt, disable interrupts but it doesn't work.

I assume, that an issue may be related to the mcu peripheral internals. Are there any related errata?

Hi Alex,

I don't see SDK 08.06 on ti.com.

I'm reassigning this thread to someone with more knowledge of this topic.

Regards,
Frank

here is a link to this version

www.ti.com/.../08.06.00.14

Hi Frank, I need help ASAP, please can you continue here or push someone

Hi Alex,

I've already reassigned the thread. I'll ping the assignee for you.

Regards,
Frank

Thank you, also here is a link to the video with demo of the issue

Hi Alex, can you please share more details? As i tried running the example instance multiple times and it's working fine.

Hi, the reply above yours, there is the link to google drive, where you can find a video with demo of the problem

https://drive.google.com/file/d/1sTCXR0z3O3lJiopuiAfqOyoFDQ9kSmvX/view - link to the video with demo

Hi, alex the issue reported is valid.  CAN may not in proper state after receiving the extra messages. Have filed a bug internally and will try to come up with the fix at the earliest.

Hi Alex,

Is this issue resolved after trying above recommended change?

Thanks And Regards,

Sunil Kumar M S

Hello, no it doesn't help, we are going to proceed with solution which exclude this situation. Thanks for support.

Hi Alex,

We would like to understand more on this issue. Is it possible to jump into debug call?You can send invite to p-sharma1@ti.com.

Thanks And Regards,

Sunil Kumar M S

Hello, please specify time, which would be convenient for you, and also your timezone

As discussed and verified in the meet, the fix is working. The changes will be updated for the following release. Can we close this thread now?