AWR1843: MCAN recovery problem

Shawn Li(Radar)

Part Number: AWR1843

Hi team,

Our customer is developing 1843's MCAN, now they are facing some problems.

1. After using can_setcontrollermode to recover busoff, the telegram id and length are 0;

2. When calling can_setcontrollermode, even though we don't connect CANH and CANL, 1843 will still trigger busoff interrupt. Place breakpoints in the start and end of can_mcanstart function and can_mcanprocessISR busoff part can reproduce this.

3. After recover from busoff, the PSR.TDCV is 0.

Please help look into these issues.

Regards,

Shawn

over 1 year ago

0 Cesar over 1 year ago

TI__Guru*** 148424 points

Hi,

Please provide us more details on

HW used. Is this a TI EVM or a custom EVM
SW used. Is this a TI Demo?

Thank you

Cesar

0 Shawn Li(Radar) over 1 year ago in reply to Cesar

TI__Intellectual 875 points

Hi Cesar,

Customer is using our MCAL demo and reproduces these problems in their board and TI EVM. And if the auto resend is not enabled, only problem2 will appear.

Regards,

Shawn

0 Cesar over 1 year ago in reply to Shawn Li(Radar)

TI__Guru*** 148424 points

Hi,

Which demo is this?

Shawn Li(Radar) said:
Customer is using our MCAL demo

So far we are not aware of any outstanding bugs for the 1843 MCAN hardware or software.

So, I assume that the issue must be related to overall system and custom SW updates

thank you
Cesar

0 Shawn Li(Radar) over 1 year ago in reply to Cesar

TI__Intellectual 875 points

Hi Cesar,

Customer is using our MACL to realize autosar.

0 Shawn Li(Radar) over 1 year ago in reply to Shawn Li(Radar)

TI__Intellectual 875 points

I have let customer give us a project so that we can reproduce it.

0 Cesar over 1 year ago in reply to Shawn Li(Radar)

TI__Guru*** 148424 points

Hi,

Please let me know if this is still an issue

thank you

Cesar

0 Shawn Li(Radar) over 1 year ago

TI__Intellectual 875 points

Hi Cesar,

This issue has been resolved, the main problem is customer setting some breakpoints and this may cause errors when recovery. The driver can work normally after removing the breakpoints.

0 Cesar over 1 year ago in reply to Shawn Li(Radar)

TI__Guru*** 148424 points

Glad to hear that!

Thank you

Cesar

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AWR1843: MCAN recovery problem