Question
STM32H750-DK FD CAN packet reception is not working in normal mode
HI all,
I am developing a CAN FD application using STM32H750-DK. Packet reception to FIFO is working in External Loopback mode and packet transmission works as well. But once I change the mode to Normal, packet reception (FIFO interrupt) dosent fire If i send a packet to the DK and (receiving does not work). It seems its not ack the receiving packets. This is the code I m using.
static void MX_FDCAN1_Init(void)
{
/* USER CODE BEGIN FDCAN1_Init 0 */
/* USER CODE END FDCAN1_Init 0 */
/* USER CODE BEGIN FDCAN1_Init 1 */
/* USER CODE END FDCAN1_Init 1 */
hfdcan1.Instance = FDCAN1;
hfdcan1.Init.FrameFormat = FDCAN_FRAME_FD_BRS;
hfdcan1.Init.Mode = FDCAN_MODE_NORMAL;
hfdcan1.Init.AutoRetransmission = DISABLE;
hfdcan1.Init.TransmitPause = DISABLE;
hfdcan1.Init.ProtocolException = DISABLE;
hfdcan1.Init.NominalPrescaler = 1;
hfdcan1.Init.NominalSyncJumpWidth = 8;
hfdcan1.Init.NominalTimeSeg1 = 0x1f;
hfdcan1.Init.NominalTimeSeg2 = 8;
hfdcan1.Init.DataPrescaler = 1;
hfdcan1.Init.DataSyncJumpWidth = 8;
hfdcan1.Init.DataTimeSeg1 = 0x1f;
hfdcan1.Init.DataTimeSeg2 = 8;
hfdcan1.Init.MessageRAMOffset = 0;
hfdcan1.Init.StdFiltersNbr = 0;
hfdcan1.Init.ExtFiltersNbr = 1;
hfdcan1.Init.RxFifo0ElmtsNbr = 1;
hfdcan1.Init.RxFifo0ElmtSize = FDCAN_DATA_BYTES_64;
hfdcan1.Init.RxFifo1ElmtsNbr = 0;
hfdcan1.Init.RxFifo1ElmtSize = FDCAN_DATA_BYTES_64;
hfdcan1.Init.RxBuffersNbr = 0;
hfdcan1.Init.RxBufferSize = FDCAN_DATA_BYTES_64;
hfdcan1.Init.TxEventsNbr = 0;
hfdcan1.Init.TxBuffersNbr = 0;
hfdcan1.Init.TxFifoQueueElmtsNbr = 1;
hfdcan1.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
hfdcan1.Init.TxElmtSize = FDCAN_DATA_BYTES_12;
if (HAL_FDCAN_Init(&hfdcan1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN FDCAN1_Init 2 */
/* Configure extended ID reception filter to Rx FIFO 1 */
sFilterConfig.IdType = FDCAN_EXTENDED_ID;
sFilterConfig.FilterIndex = 0;
sFilterConfig.FilterType = FDCAN_FILTER_MASK;
sFilterConfig.FilterConfig = FDCAN_FILTER_TO_RXFIFO0;
sFilterConfig.FilterID1 = 0x2011FFF;
sFilterConfig.FilterID2 = 0xFFFFFFF;
if (HAL_FDCAN_ConfigFilter(&hfdcan1, &sFilterConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_FDCAN_DisableEdgeFiltering(&hfdcan1) != HAL_OK)
{
Error_Handler();
}
if (HAL_FDCAN_ConfigInterruptLines(&hfdcan1, 0xFFFFFFFF, FDCAN_INTERRUPT_LINE0) != HAL_OK)
{
Error_Handler();
}
if(HAL_FDCAN_ActivateNotification(&hfdcan1,FDCAN_IT_RX_FIFO0_NEW_MESSAGE,0) != HAL_OK)
{
Error_Handler();
}
if(HAL_FDCAN_ConfigGlobalFilter(&hfdcan1, FDCAN_ACCEPT_IN_RX_FIFO0, FDCAN_ACCEPT_IN_RX_FIFO0, FDCAN_FILTER_REMOTE, FDCAN_FILTER_REMOTE) != HAL_OK)
{
Error_Handler();
}
if (HAL_FDCAN_Start(&hfdcan1) != HAL_OK)
{
Error_Handler();
}
/* Add second message to Tx FIFO */
TxHeader.Identifier = 0x2011FFF;
TxHeader.IdType = FDCAN_EXTENDED_ID;
TxHeader.TxFrameType = FDCAN_DATA_FRAME;
TxHeader.DataLength = FDCAN_DLC_BYTES_12;
TxHeader.ErrorStateIndicator = FDCAN_ESI_PASSIVE;
TxHeader.BitRateSwitch = FDCAN_BRS_OFF;
TxHeader.FDFormat = FDCAN_FD_CAN;
TxHeader.TxEventFifoControl = FDCAN_STORE_TX_EVENTS;
TxHeader.MessageMarker = 0xDD;
while(1)
{
if(HAL_FDCAN_AddMessageToTxFifoQ(&hfdcan1, &TxHeader, TxData2) != HAL_OK)
{
Error_Handler();
}
HAL_Delay(1000);
}
/* USER CODE END FDCAN1_Init 2 */
}
void HAL_FDCAN_RxFifo0Callback(FDCAN_HandleTypeDef *hfdcan, uint32_t RxFifo0ITs)
{
FDCAN_RxHeaderTypeDef RxHeader;
if((RxFifo0ITs & FDCAN_IT_RX_FIFO0_NEW_MESSAGE) != RESET)
{
/* Retrieve Rx messages from RX FIFO0 */
if (HAL_FDCAN_GetRxMessage(hfdcan, FDCAN_RX_FIFO0, &RxHeader, RxData) != HAL_OK)
{
Error_Handler();
}
/* Display LEDx */
if ((RxHeader.Identifier == 0x321) && (RxHeader.IdType == FDCAN_STANDARD_ID) && (RxHeader.DataLength == FDCAN_DLC_BYTES_2))
{
//LED_Display(RxData[0]);
//ubKeyNumber = RxData[0];
}
}
if(HAL_FDCAN_ActivateNotification(&hfdcan1,FDCAN_IT_RX_FIFO0_NEW_MESSAGE,0) != HAL_OK)
{
Error_Handler();
}
}Can some one help me to figure out the issue. Thanks