STM32F4 HAL库如何使用CAN总线？

1392 STM32 GD32F207-MCUDBG

问答对人有帮助，内容完整，我也想知道答案 0 STM32F4 HAL库如何使用CAN路线？ 0
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答案对人有帮助，有参考价值 0 CAN_HandleTypeDef hcan1; void CAN1_User_Init(CAN_HandleTypeDef* hcan ); /* CAN1 init function / void MX_CAN1_Init(void) { hcan1.Instance = CAN1; hcan1.Init.Prescaler = 6; hcan1.Init.Mode = CAN_MODE_NORMAL; hcan1.Init.SyncJumpWidth = CAN_SJW_1TQ; hcan1.Init.TimeSeg1 = CAN_BS1_3TQ; hcan1.Init.TimeSeg2 = CAN_BS2_3TQ; hcan1.Init.TimeTriggeredMode = DISABLE; hcan1.Init.AutoBusOff = DISABLE; hcan1.Init.AutoWakeUp = DISABLE; hcan1.Init.AutoRetransmission = DISABLE; hcan1.Init.ReceiveFifoLocked = DISABLE; hcan1.Init.TransmitFifoPriority = DISABLE; if (HAL_CAN_Init(&hcan1) != HAL_OK) { Error_Handler(); } CAN1_User_Init(&hcan1); } void HAL_CAN_MspInit(CAN_HandleTypeDef canHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(canHandle->Instance==CAN1) { /* USER CODE BEGIN CAN1_MspInit 0 / / USER CODE END CAN1_MspInit 0 / / CAN1 clock enable / __HAL_RCC_CAN1_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); /CAN1 GPIO Configuration PD0 ------> CAN1_RX PD1 ------> CAN1_TX / GPIO_InitStruct.Pin = GPIO_PIN_0\|GPIO_PIN_1; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF9_CAN1; HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); /* CAN1 interrupt Init / HAL_NVIC_SetPriority(CAN1_TX_IRQn, 0, 0); HAL_NVIC_EnableIRQ(CAN1_TX_IRQn); HAL_NVIC_SetPriority(CAN1_RX0_IRQn, 0, 0); HAL_NVIC_EnableIRQ(CAN1_RX0_IRQn); / USER CODE BEGIN CAN1_MspInit 1 / / USER CODE END CAN1_MspInit 1 / } } void HAL_CAN_MspDeInit(CAN_HandleTypeDef canHandle) { if(canHandle->Instance==CAN1) { /* USER CODE BEGIN CAN1_MspDeInit 0 / / USER CODE END CAN1_MspDeInit 0 / / Peripheral clock disable / __HAL_RCC_CAN1_CLK_DISABLE(); /CAN1 GPIO Configuration PD0 ------> CAN1_RX PD1 ------> CAN1_TX / HAL_GPIO_DeInit(GPIOD, GPIO_PIN_0\|GPIO_PIN_1); /* CAN1 interrupt Deinit / HAL_NVIC_DisableIRQ(CAN1_TX_IRQn); HAL_NVIC_DisableIRQ(CAN1_RX0_IRQn); / USER CODE BEGIN CAN1_MspDeInit 1 / / USER CODE END CAN1_MspDeInit 1 / } } / USER CODE BEGIN 1 / void CAN1_User_Init(CAN_HandleTypeDef hcan ) { CAN_FilterTypeDef sFilterConfig; HAL_StatusTypeDef HAL_Status; sFilterConfig. FilterIdHigh = 0; sFilterConfig. FilterIdLow = 0; sFilterConfig. FilterMaskIdHigh = 0; sFilterConfig. FilterMaskIdLow = 0; sFilterConfig. FilterFIFOAssignment = CAN_FILTER_FIFO0; sFilterConfig. FilterBank = 0; sFilterConfig. FilterMode = CAN_FILTERMODE_IDMASK; sFilterConfig. FilterScale = CAN_FILTERSCALE_32BIT; sFilterConfig. FilterActivation = ENABLE; sFilterConfig. SlaveStartFilterBank = 14; HAL_Status = HAL_CAN_ConfigFilter(hcan, &sFilterConfig); HAL_Status = HAL_CAN_Start(hcan); if(HAL_Status != HAL_OK){ Error_Handler(); } HAL_Status = HAL_CAN_ActivateNotification(hcan, CAN_IT_RX_FIFO0_MSG_PENDING \| CAN_IT_TX_MAILBOX_EMPTY); if(HAL_Status != HAL_OK){ Error_Handler(); } }

2022-1-27 09:32:05 评论举报王飞云