FDCAN2 无法进入中断

gengge

各位大佬 能否指导一下 用cubex生成的双CANFD, CAN1能发送，能中断接收。CAN2能发送，但是进不了中断。两路除了

[C] 纯文本查看 复制代码

 hfdcan2.Init.MessageRAMOffset = hfdcan1.msgRam.EndAddress - SRAMCAN_BASE;

外 其他都一样

看了论坛里的帖子，整了下还是不行，能否指导一下

[C] 纯文本查看 复制代码

  /* USER CODE END FDCAN1_Init 1 */
  hfdcan1.Instance = FDCAN1;
  hfdcan1.Init.FrameFormat = FDCAN_FRAME_FD_NO_BRS;
  hfdcan1.Init.Mode = FDCAN_MODE_NORMAL;
  hfdcan1.Init.AutoRetransmission = ENABLE;
  hfdcan1.Init.TransmitPause = ENABLE;
  hfdcan1.Init.ProtocolException = DISABLE;
  hfdcan1.Init.NominalPrescaler = 1;
  hfdcan1.Init.NominalSyncJumpWidth = 0x8;
  hfdcan1.Init.NominalTimeSeg1 = 0x1F;
  hfdcan1.Init.NominalTimeSeg2 = 0x8;
  hfdcan1.Init.DataPrescaler = 1;
  hfdcan1.Init.DataSyncJumpWidth = 1;
  hfdcan1.Init.DataTimeSeg1 = 7;
  hfdcan1.Init.DataTimeSeg2 = 2;
  hfdcan1.Init.MessageRAMOffset = 0;
  hfdcan1.Init.StdFiltersNbr = 0;
  hfdcan1.Init.ExtFiltersNbr = 0;
  hfdcan1.Init.RxFifo0ElmtsNbr = 6;
  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 = 6;
  hfdcan1.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
  hfdcan1.Init.TxElmtSize = FDCAN_DATA_BYTES_64;
  if (HAL_FDCAN_Init(&hfdcan1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN FDCAN1_Init 2 */
    /* éèÖÃRx FIFO0μÄwartermarkÎa1 */
    HAL_FDCAN_ConfigFifoWatermark(&hfdcan1, FDCAN_CFG_RX_FIFO0, 1);

    /* ¼¤»îRX FIFO0μÄwatermarkí¨ÖaÖD¶Ï￡¬Î»¿aÆôTx BufferÖD¶Ï*/
    HAL_FDCAN_ActivateNotification(&hfdcan1, FDCAN_IT_RX_FIFO0_WATERMARK, 0);

    /* Æô¶ˉFDCAN */
    HAL_FDCAN_Start(&hfdcan1);
  /* USER CODE END FDCAN1_Init 2 */

}

[C] 纯文本查看 复制代码

/* FDCAN2 init function */
void MX_FDCAN2_Init(void)
{

  /* USER CODE BEGIN FDCAN2_Init 0 */

  /* USER CODE END FDCAN2_Init 0 */

  /* USER CODE BEGIN FDCAN2_Init 1 */

  /* USER CODE END FDCAN2_Init 1 */
  hfdcan2.Instance = FDCAN2;
  hfdcan2.Init.FrameFormat = FDCAN_FRAME_FD_NO_BRS;
  hfdcan2.Init.Mode = FDCAN_MODE_NORMAL;
  hfdcan2.Init.AutoRetransmission = ENABLE;
  hfdcan2.Init.TransmitPause = ENABLE;
  hfdcan2.Init.ProtocolException = DISABLE;
  hfdcan2.Init.NominalPrescaler = 1;
  hfdcan2.Init.NominalSyncJumpWidth = 0x08;
  hfdcan2.Init.NominalTimeSeg1 = 0x1F;
  hfdcan2.Init.NominalTimeSeg2 = 0x08;
  hfdcan2.Init.DataPrescaler = 1;
  hfdcan2.Init.DataSyncJumpWidth = 1;
  hfdcan2.Init.DataTimeSeg1 = 7;
  hfdcan2.Init.DataTimeSeg2 = 2;
  hfdcan2.Init.MessageRAMOffset = hfdcan1.msgRam.EndAddress - SRAMCAN_BASE;
  hfdcan2.Init.StdFiltersNbr = 0;
  hfdcan2.Init.ExtFiltersNbr = 0;
  hfdcan2.Init.RxFifo0ElmtsNbr = 6;
  hfdcan2.Init.RxFifo0ElmtSize = FDCAN_DATA_BYTES_64;
  hfdcan2.Init.RxFifo1ElmtsNbr = 0;
  hfdcan2.Init.RxFifo1ElmtSize = FDCAN_DATA_BYTES_64;
  hfdcan2.Init.RxBuffersNbr = 0;
  hfdcan2.Init.RxBufferSize = FDCAN_DATA_BYTES_64;
  hfdcan2.Init.TxEventsNbr = 0;
  hfdcan2.Init.TxBuffersNbr = 0;
  hfdcan2.Init.TxFifoQueueElmtsNbr = 6;
  hfdcan2.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
  hfdcan2.Init.TxElmtSize = FDCAN_DATA_BYTES_64;
  if (HAL_FDCAN_Init(&hfdcan2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN FDCAN2_Init 2 */
    /* éèÖÃRx FIFO0μÄwartermarkÎa1 */
    HAL_FDCAN_ConfigFifoWatermark(&hfdcan2, FDCAN_CFG_RX_FIFO0, 8);

    /* ¼¤»îRX FIFO0μÄwatermarkí¨ÖaÖD¶Ï￡¬Î»¿aÆôTx BufferÖD¶Ï*/
    HAL_FDCAN_ActivateNotification(&hfdcan2, FDCAN_IT_RX_FIFO0_WATERMARK, 0);

    /* Æô¶ˉFDCAN */
    HAL_FDCAN_Start(&hfdcan2);
  /* USER CODE END FDCAN2_Init 2 */

}

eric2013

没看到你的时钟，NVIC等配置。

对比下我这个吧。

基于STM32H7的双CAN FD通信案例（2022-06-30）
https://www.armbbs.cn/forum.php? ... 3449&fromuid=58
(出处: 硬汉嵌入式论坛)

gengge

eric2013 发表于 2022-9-1 00:12
没看到你的时钟，NVIC等配置。

对比下我这个吧。

好的感谢 我再仔细对比一下