S32K344 RXFIFO Legacy

nirmal_masilamani — Tue, 07 Oct 2025 11:47:27 GMT

Hello Team,

I am working on S32K344 EVB with CAN0, CAN TX and TX working normally. RXFIFO Legacy filter is not working, not getting any interrupt in callback.

I have attached my project here.

Re: S32K344 RXFIFO Legacy

Julián_AragónM — Thu, 09 Oct 2025 16:30:01 GMT

Hi @nirmal_masilamani

Routine and configuration seem fine. Just keep in mind that the filters' field can only be written in Freeze mode; the module blocks it in other modes.

Just move FlexCAN_Ip_SetStartMode() to after configuration:

uint16 can_hal_config_init_u16() { uint16 ret_val_u16 = 0U; { ret_val_u16 = FlexCAN_Ip_Init(CAN_MAIN_INSTANCE, &FlexCAN_State0, &FlexCAN_Config0); if(E_OK == ret_val_u16) { /* Configure TX message buffer with index TX_MSG_ID and TX_MAILBOX*/ { for(uint8 idx = 0U; idx < NO_OF_FILTER_ID; idx++) { can_rx_fifo_filter_table[idx].isRemoteFrame = false; can_rx_fifo_filter_table[idx].isExtendedFrame = false; can_rx_fifo_filter_table[idx].id = can_comm_filter_rx_msg_u32[idx]; } FlexCAN_Ip_ConfigRxFifo(CAN_MAIN_INSTANCE,FLEXCAN_RX_FIFO_ID_FORMAT_A, can_rx_fifo_filter_table); ret_val_u16 = FlexCAN_Ip_SetStartMode(CAN_MAIN_INSTANCE); can_hal_tx_msg_uint16(CAN_MAIN_INSTANCE, 0x18EAE4F4, (uint8 *)&dummyData, CAN_MAIN_TX_MailBox); can_hal_start_rx_u16(); } } } return ret_val_u16; }

Best regards,
Julián

Re: S32K344 RXFIFO Legacy

nirmal_masilamani — Thu, 16 Oct 2025 10:09:50 GMT

Hello @Julián_AragónM ,

Thank you for reply.

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S32K344 RXFIFO Legacy

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Re: S32K344 RXFIFO Legacy