Hello,
i am trying to write a small example which only send 8 bytes .
I am using generated code from Stm32cubeMx and i have the initialization parameter from this thread :
https://community.st.com/s/question/0D50X00009XkWmjSAF/fdcan-stm32h743zinucleo-tx
I am using msp2517fd transceiver.
what do i miss ?
the initialization :
hfdcan1.Instance = FDCAN1;
hfdcan1.Init.FrameFormat = FDCAN_FRAME_CLASSIC;
hfdcan1.Init.Mode = FDCAN_MODE_INTERNAL_LOOPBACK;
hfdcan1.Init.AutoRetransmission = DISABLE;
hfdcan1.Init.TransmitPause = DISABLE;
hfdcan1.Init.ProtocolException = DISABLE;
hfdcan1.Init.NominalPrescaler = 16;
hfdcan1.Init.NominalSyncJumpWidth = 9;
hfdcan1.Init.NominalTimeSeg1 = 4;
hfdcan1.Init.NominalTimeSeg2 = 3;
hfdcan1.Init.DataPrescaler = 4;
hfdcan1.Init.DataSyncJumpWidth = 9;
hfdcan1.Init.DataTimeSeg1 = 4;
hfdcan1.Init.DataTimeSeg2 = 3;
hfdcan1.Init.MessageRAMOffset = 0;
hfdcan1.Init.StdFiltersNbr = 0;
hfdcan1.Init.ExtFiltersNbr = 0;
hfdcan1.Init.RxFifo0ElmtsNbr = 8;
hfdcan1.Init.RxFifo0ElmtSize = FDCAN_DATA_BYTES_8;
hfdcan1.Init.RxFifo1ElmtsNbr = 0;
hfdcan1.Init.RxFifo1ElmtSize = FDCAN_DATA_BYTES_8;
hfdcan1.Init.RxBuffersNbr = 0;
hfdcan1.Init.RxBufferSize = FDCAN_DATA_BYTES_8;
hfdcan1.Init.TxEventsNbr = 0;
hfdcan1.Init.TxBuffersNbr = 11;
hfdcan1.Init.TxFifoQueueElmtsNbr = 4;
hfdcan1.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
hfdcan1.Init.TxElmtSize = FDCAN_DATA_BYTES_8;
hfdcan1.msgRam.StandardFilterSA = 0;
hfdcan1.msgRam.ExtendedFilterSA = 0;
hfdcan1.msgRam.RxFIFO0SA = 0;
hfdcan1.msgRam.RxFIFO1SA = 0;
hfdcan1.msgRam.RxBufferSA = 0;
hfdcan1.msgRam.TxEventFIFOSA = 0;
hfdcan1.msgRam.TxBufferSA = 0;
hfdcan1.msgRam.TxFIFOQSA = 0;
hfdcan1.msgRam.TTMemorySA = 0;
hfdcan1.msgRam.EndAddress = 0;
hfdcan1.ErrorCode = 0;
if (HAL_FDCAN_Init(&hfdcan1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN FDCAN1_Init 2 */
/* USER CODE END FDCAN1_Init 2 */
}
/* Prepare Tx Header */
pTxHeader.Identifier = 0xaa;
pTxHeader.IdType = FDCAN_STANDARD_ID;
pTxHeader.TxFrameType = FDCAN_DATA_FRAME;
pTxHeader.DataLength = FDCAN_DLC_BYTES_8;
pTxHeader.ErrorStateIndicator = FDCAN_ESI_ACTIVE;
pTxHeader.BitRateSwitch = FDCAN_BRS_OFF;
pTxHeader.FDFormat = FDCAN_CLASSIC_CAN;
pTxHeader.TxEventFifoControl = FDCAN_NO_TX_EVENTS;
pTxHeader.MessageMarker = 1;
the main :
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_FDCAN1_Init();
/* USER CODE BEGIN 2 */
for( int i = 0 ; i < 8 ; i++)
pTxData[i] = i ;
// HAL_FDCAN_ActivateNotification(&hfdcan1, 0xFFFFFFFF, 0xFFFFFFFF);
/* Start the FDCAN module */
if (HAL_FDCAN_Start(&hfdcan1) != HAL_OK)
{
Error_Handler();
}
if (HAL_FDCAN_AddMessageToTxBuffer(&hfdcan1, &pTxHeader, pTxData, FDCAN_TX_BUFFER0) != HAL_OK)
//if (HAL_FDCAN_AddMessageToTxFifoQ(&hfdcan1, &pTxHeader, pTxData) != HAL_OK)
{
/* Transmission request Error */
Error_Handler();
}
if (HAL_FDCAN_EnableTxBufferRequest(&hfdcan1,FDCAN_TX_BUFFER0) != HAL_OK)
{
/* Transmission request Error */
//Error_Handler();
}
any ideas ??
