S32K3 CAN

[abc1258]

When configuring the CAN communication of S32K3 series core board, I encountered a problem. I hope you can get help. Thank you. The problem is as follows: CAN send and receive (extended and standard) CAN be tested separately. If CAN accept mailbox is enabled, it will enable the accept mailbox interrupt flag when sending, and directly enter the interrupt. How to solve this problem?

[abc1258]

@Senlent ok,thank you

[abc1258]

@Senlent Thank you for your reply. The previous problem has been solved. When configuring the initialization of CAN, you can just disable the self-receiving,Now we face a new problem, initialize the receiving function and then do processing in the interrupt, will not recognize my ID number, no matter the ID can enter the interrupt and do data processing

[Senlent]

Hi@abc1258

This should be the same as the FlexCAN module of the S32K1 series, the interrupt of the MB is or operation, so when you send it will also enter the interrupt,you can don't care about it in the interrupt handler.

[Senlent]

You can refer to these routines

https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K344-FlexCAN-Ip-TX-RX-EnhanceRXFIFO-test...