S32KのトピックRe: S32K314 Not sending CAN frame

S32K314 Not sending CAN frame

Shapan — Mon, 08 Jul 2024 03:53:41 GMT

Hello There,

I am trying to send CAN/FD frame from S32K314 based on FlexCAN_example, but no frames are visible on the CAN trace, below is my code, I have also attached the CAN configurations:

extern void CAN0_ORED_0_31_MB_IRQHandler(void);

int main(void)

{

/* Write your code here */

Clock_Ip_Init(&Clock_Ip_aClockConfig[0]);

Siul2_Port_Ip_Init(NUM_OF_CONFIGURED_PINS_PortContainer_0_BOARD_InitPeripherals,g_pin_mux_InitConfigArr_PortContainer_0_BOARD_InitPeripherals);

IntCtrl_Ip_EnableIrq(FlexCAN0_1_IRQn);

IntCtrl_Ip_InstallHandler(FlexCAN0_1_IRQn, CAN0_ORED_0_31_MB_IRQHandler, NULL_PTR);

Flexcan_Ip_DataInfoType rx_info = {

.msg_id_type = FLEXCAN_MSG_ID_STD,

.data_length = 8u,

.is_polling = TRUE,

.is_remote = FALSE

};

Flexcan_Ip_MsgBuffType rxData;

FlexCAN_Ip_Init(INST_FLEXCAN_0, &FlexCAN_State0, &FlexCAN_Config0);

FlexCAN_Ip_SetStartMode(INST_FLEXCAN_0);

FlexCAN_Ip_ConfigRxMb(INST_FLEXCAN_0, RX_MB_IDX, &rx_info, MSG_ID);

while(1)

{

rx_info.is_polling = TRUE;

FlexCAN_Ip_Send(INST_FLEXCAN_0, TX_MB_IDX, &rx_info, MSG_ID, (uint8 *)&dummyData);

}

return exit_code;

}

Please let me know am I missing anything here ?

Re: S32K314 Not sending CAN frame

Julián_AragónM — Mon, 08 Jul 2024 16:41:08 GMT

Hi @Shapan,

Are you utilizing two nodes (two S32K314) or are you measuring the CAN Line with an analyzer?

If using a CAN analyzer tool, make sure the CAN bit setting is configured to have the same sample point as configuration. It is recommended to have same prescaler and TDC is not needed for these rates.

Best regards,
Julián

Re: S32K314 Not sending CAN frame

Shapan — Tue, 09 Jul 2024 08:53:25 GMT

Hi @Julián_AragónM ,
Thanks for the reply, Yes I am using the CANalyzer for this, I have tried the bit rate according to the tool but still no solution., tried with different baudrates (500k, 1MB etc,.)

I have attached the ESR1 register information, kindly look into this