S32K396 CAN Interrupt

[Jason88619]

Hello everyone, I'm currently using the S32K396-BGA-DC1 development board and want to receive CAN messages via interrupts. My configuration is as shown in the attached image. However, this configuration fails to receive CAN messages successfully.

I would greatly appreciate it if anyone could point out my mistakes, provide a CAN + interrupt reception method, or a CAN + Rx FIFO reception method. Thank you in advance!

[Julián_AragónM · Accepted solution]

Hi @Jason88619,

From your main.c routine, I can see you are not initializing the interrupt controller driver. If you are using latest RTD, simply call the following function:

/* Initialize Interrupt */

IntCtrl_Ip_Init(&IntCtrlConfig_0);

There is no need to call IntCtrl_Ip_EnableIrq() & IntCtrl_Ip_InstallHandler(), as IntCtrl_Ip_Init() does call both of these functions.

There are some examples for FlexCAN implementation in community. Please see them below:

• Example S32K344 FlexCAN_Ip TX/RX/EnhanceRXFIFO DMA test S32DS3.5 RTD400 - NXP Community
• [RTD600 MCAL & IP] S32K3X4EVB-T172 FlexCAN Example Interrupt/Polling - NXP Community
• S32K312 CAN Transmit & Receive Using MB & FIFO DMA.

They are not based on S32K396 derivative, but configuration and main routine should be the same.

Best regards,
Julián

[Jason88619]

Thank you so much!