When running CANFD demo, the BUSY state is always returned when sending data.
Hardware: S32K146 + TJA1145FD
PE configuration:
codes:The software code is based on TJA1145 demo and S32K146 can_pal_s32k146 demo
void Hwi_test()
{
unsigned char ret = 1;
//HWI_TJA1145_Init();
ret = StartupOperation();
//AddTaskToScheduler(CHANGE_TO_NORMAL);
unsigned int count = 0;
TJA1145FD_Transceiver_Status_Reg_t trcvStatus;
TJA1145FD_CAN_Control_Reg_t cc;
(void) TJA1145FD_getTransceiverStatus(&trcvStatus.TJA1145FD_CTS, &trcvStatus.TJA1145FD_CPNERR, &trcvStatus.TJA1145FD_CPNS, &trcvStatus.TJA1145FD_COSCS, &trcvStatus.TJA1145FD_CBSS, &trcvStatus.TJA1145FD_VCS, &trcvStatus.TJA1145FD_CFS);
if (TJA1145FD_getCANControl(&cc.TJA1145FD_CFDC, &cc.TJA1145FD_PNCOK, &cc.TJA1145FD_CPNC, &cc.TJA1145FD_CMC)!= NXP_UJA11XX_SUCCESS) {
ret = E_NOT_OK;
}
CAN_Init(&CAN0_pal1_instance, &CAN0_pal1_Config0);
/* Set information about the data to be sent
* - Standard message ID
* - Bit rate switch enabled to use a different bitrate for the data segment
* - Flexible data rate enabled
* - Use zeros for FD padding
*/
can_buff_config_t buffCfg = {
.enableFD = true,
.enableBRS = true,
.fdPadding = 0U,
.idType = CAN_MSG_ID_STD,
.isRemote = false
};
/* Configure RX buffer with index RX_MAILBOX */
CAN_ConfigRxBuff(&CAN0_pal1_instance, 0, &buffCfg, 0x45);
/* Configure TX buffer with index TX_MAILBOX*/
CAN_ConfigTxBuff(&CAN0_pal1_instance, 1, &buffCfg);
/* Prepare message to be sent */
can_message_t message = {
.cs = 0U,
.id = 0x42,
.data[0] = 0x55,
.length = 8U
};
// extern void TJA1145_main(void);
// TJA1145_main();
/* Send the information via CAN */
CAN_Send(&CAN0_pal1_instance, 1, &message);
while(1)
{
/* Define receive buffer */
can_message_t recvMsg;
/* Start receiving data in RX_MAILBOX. */
// CAN_Receive(&CAN0_pal1_instance, 0, &recvMsg);
/* Wait until the previous FlexCAN receive is completed */
while(CAN_GetTransferStatus(&CAN0_pal1_instance, 1) != STATUS_BUSY)
{
CAN_Send(&CAN0_pal1_instance, 0, &message);
}
// FLEXCAN0_transmit_msg();
// message.data[0] += 1;}
}
Question:
1. Why are you always BUSY? What are the reasons and recommended directions for troubleshooting?
Note: The CAN0 TX port of the S32K146 remains high at all times.
2.
Is the TX status of CAN0 affected by TJA1145?
Note: The initialization status of TJA1145 is as follows:
Thanks a lot.
