关于fdcan，会重复发送的问题

suchangqing

  fdcan可以发送，但是只有第一帧时正常的，后面每次都会发送同样的两帧。有人碰到这样的问题吗？
只要一写fdcan的TXBAR寄存器，就i会有两帧发送出来，不知道时哪里的问题，有大神知道吗？
帧数据如下，也用示波器看了，确实是一下发送了两帧。

初始化代码
hfdcan1.Instance = FDCAN1;
  hfdcan1.Init.FrameFormat = FDCAN_FRAME_CLASSIC;
  hfdcan1.Init.Mode = FDCAN_MODE_NORMAL;
  hfdcan1.Init.AutoRetransmission = DISABLE;
  hfdcan1.Init.TransmitPause = DISABLE;
  hfdcan1.Init.ProtocolException = DISABLE;
  hfdcan1.Init.NominalPrescaler = 30;        //480Mhz/30 = 16Mhz
  hfdcan1.Init.NominalSyncJumpWidth = 1;        //10+3+3 = 16 1Mhz bps
  hfdcan1.Init.NominalTimeSeg1 = 9;
  hfdcan1.Init.NominalTimeSeg2 = 6;
  hfdcan1.Init.DataPrescaler = 30;        //480Mhz/30 = 16Mhz
  hfdcan1.Init.DataSyncJumpWidth = 1;        //10+3+3=16  1MHz bps
  hfdcan1.Init.DataTimeSeg1 = 9;
  hfdcan1.Init.DataTimeSeg2 = 6;
  hfdcan1.Init.MessageRAMOffset = 0;
  hfdcan1.Init.StdFiltersNbr = 0;
  hfdcan1.Init.ExtFiltersNbr = 0;
  hfdcan1.Init.RxFifo0ElmtsNbr = 0;
  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 = 0;
  hfdcan1.Init.TxFifoQueueElmtsNbr = 32;                //32 fifo
  hfdcan1.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
  hfdcan1.Init.TxElmtSize = FDCAN_DATA_BYTES_8;
  if (HAL_FDCAN_Init(&hfdcan1) != HAL_OK)
  {
    Error_Handler();
  }

发送代码：
        FDCAN_txheader.Identifier = 1234;
        FDCAN_txheader.IdType = FDCAN_STANDARD_ID;
        FDCAN_txheader.TxFrameType = FDCAN_DATA_FRAME;
        FDCAN_txheader.DataLength = FDCAN_DLC_BYTES_4;
        FDCAN_txheader.ErrorStateIndicator = FDCAN_ESI_ACTIVE;
        FDCAN_txheader.BitRateSwitch = FDCAN_BRS_OFF;//FDCAN_BRS_ON;
        FDCAN_txheader.FDFormat = FDCAN_CLASSIC_CAN;//FDCAN_FD_CAN;
        FDCAN_txheader.TxEventFifoControl = FDCAN_NO_TX_EVENTS;
        FDCAN_txheader.MessageMarker = 0;

                        for(i=0; i<8; i++)
                                CANTxBuf = 0x00;
                        CANTxBuf[0] = SYSTEM_TotalSecs;
                        CANTxBuf[1] = SYSTEM_TotalSecs>>8;
                        CANTxBuf[2] = SYSTEM_TotalSecs>>16;
                        CANTxBuf[3] = SYSTEM_TotalSecs>>24;                       
                        HAL_FDCAN_AddMessageToTxFifoQ(&hfdcan1, &FDCAN_txheader, CANTxBuf);

zhkzhao

请问一下楼主解决没？我最近也在调这个，头大