开发环境:IAR for ARM 7.80.2
问题描述:1、使用CMSIS库,开了串口1和串口2,除波特率不同,其他都一样。串口2工作正常,串口1接收数据出错。
2.使用HAL库,串口1和串口2都正常。
排除了硬件的故障,所以问题肯定还是出在软件上面。但是比较两者不同,貌似又没有什么不同。调了好几天,实在没头绪。
代码如下:
CMSIS下:
- /**
- * [url=home.php?mod=space&uid=159083]@brief[/url] uart1 init
- * @param none
- * @retval None
- */
- void USART1_Init(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- GPIO_InitTypeDef GPIOInitType;
- USART_InitTypeDef USART_InitStructure;
- //RCC_USARTCLKConfig(RCC_USART1CLK_PCLK);
-
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE );
- USART_InitStructure.USART_BaudRate = 9600;
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;
- USART_InitStructure.USART_StopBits = USART_StopBits_1;
- USART_InitStructure.USART_Parity = USART_Parity_No;
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
- USART_Init(USART1, &USART_InitStructure);
- USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
- USART_Cmd(USART1, ENABLE);
-
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_1);
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_1);
- GPIOInitType.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
- GPIOInitType.GPIO_Speed = GPIO_Speed_50MHz;
- GPIOInitType.GPIO_Mode = GPIO_Mode_AF;
- GPIOInitType.GPIO_OType = GPIO_OType_PP;
- GPIOInitType.GPIO_PuPd = GPIO_PuPd_UP ;
- GPIO_Init(GPIOA, &GPIOInitType);
-
- NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- /**
- * @brief uart2 init
- * @param none
- * @retval None
- */
- void USART2_Init(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- GPIO_InitTypeDef GPIOInitType;
- USART_InitTypeDef USART_InitStructure;
-
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE );
- USART_InitStructure.USART_BaudRate = 115200;
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;
- USART_InitStructure.USART_StopBits = USART_StopBits_1;
- USART_InitStructure.USART_Parity = USART_Parity_No;
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
- USART_Init(USART2, &USART_InitStructure);
- USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
- USART_Cmd(USART2, ENABLE);
-
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_1);
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource3,GPIO_AF_1);
- GPIOInitType.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
- GPIOInitType.GPIO_Speed = GPIO_Speed_50MHz;
- GPIOInitType.GPIO_Mode = GPIO_Mode_AF;
- GPIOInitType.GPIO_OType = GPIO_OType_PP;
- GPIOInitType.GPIO_PuPd = GPIO_PuPd_UP ;
- GPIO_Init(GPIOA, &GPIOInitType);
-
- NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
- NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- /**
- * @brief uart1 interrupt
- * @param None
- * @retval None
- */
- void USART1_IRQHandler(void)
- {
- U8 dat = 0;
- if (USART_GetFlagStatus(USART1, USART_FLAG_ORE) != RESET)
- {
- USART_ClearITPendingBit(USART1,USART_IT_ORE);
- dat = USART_ReceiveData(USART1);
- if(!QueueIsFull(&BoardRxQueue)) //队列不满
- {
- PushInQueue_Q(&BoardRxQueue, dat);
- TIM6->CNT = 0; //定时器计数设为0
- if(g_devWorkStatus.bRecvDataUart1 == 0)//打开定时器。如果定时器产生了中断,则说明一帧数据接收完毕了
- TIM6_Set(1);
- }
- else
- g_devWorkStatus.bRecvDataUart1 = 1;
- }
- if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
- {
- dat = USART_ReceiveData(USART1);
- if(!QueueIsFull(&BoardRxQueue)) //队列不满
- {
- PushInQueue_Q(&BoardRxQueue, dat);
- TIM6->CNT = 0; //定时器计数设为0
- if(g_devWorkStatus.bRecvDataUart1 == 0)//打开定时器。如果定时器产生了中断,则说明一帧数据接收完毕了
- TIM6_Set(1);
- }
- else
- g_devWorkStatus.bRecvDataUart1 = 1;
- USART_ClearITPendingBit(USART1, USART_IT_RXNE);
- }
- }
- /**
- * @brief uart2 interrupt
- * @param None
- * @retval None
- */
- void USART2_IRQHandler(void)
- {
- U8 dat = 0;
- if (USART_GetFlagStatus(USART2, USART_FLAG_ORE) != RESET)
- {
- USART_ClearITPendingBit(USART2,USART_IT_ORE);
- dat = USART_ReceiveData(USART2);
- if(!QueueIsFull(&MG2618RxQueue)) //队列不满
- {
- PushInQueue_Q(&MG2618RxQueue, dat);
- TIM7->CNT = 0; //定时器计数设为0
- if(g_devWorkStatus.bRecvDataUart2 == 0)//打开定时器。如果定时器产生了中断,则说明一帧数据接收完毕了
- TIM7_Set(1);
- }
- else
- g_devWorkStatus.bRecvDataUart2 = 1;
- }
-
- if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
- {
- dat = USART_ReceiveData(USART2);
- if(!QueueIsFull(&MG2618RxQueue)) //队列不满
- {
- PushInQueue_Q(&MG2618RxQueue, dat);
- TIM7->CNT = 0; //定时器计数设为0
- if(g_devWorkStatus.bRecvDataUart2 == 0)//打开定时器。如果定时器产生了中断,则说明一帧数据接收完毕了
- TIM7_Set(1);
- }
- else
- g_devWorkStatus.bRecvDataUart2 = 1;
- USART_ClearITPendingBit(USART2, USART_IT_RXNE);
- }
- }
复制代码
HAL库下的代码:
- /* USART1 init function */
- static void MX_USART1_UART_Init(void)
- {
-
- huart1.Instance = USART1;
- huart1.Init.BaudRate = 9600;
- huart1.Init.WordLength = UART_WORDLENGTH_8B;
- huart1.Init.StopBits = UART_STOPBITS_1;
- huart1.Init.Parity = UART_PARITY_NONE;
- huart1.Init.Mode = UART_MODE_TX_RX;
- huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
- huart1.Init.OverSampling = UART_OVERSAMPLING_16;
- huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
- huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
- if (HAL_UART_Init(&huart1) != HAL_OK)
- {
- Error_Handler();
- }
- __HAL_UART_ENABLE_IT(&huart1, UART_IT_RXNE);
- // if(HAL_UART_Receive_IT(&huart1,aRxBuffer,1)!=HAL_OK)
- // {
- // Error_Handler();
- // }
- NVIC_SetPriority(USART1_IRQn, 1);
- HAL_NVIC_EnableIRQ(USART1_IRQn);
- }
- /* USART2 init function */
- static void MX_USART2_UART_Init(void)
- {
-
- huart2.Instance = USART2;
- huart2.Init.BaudRate = 115200;
- huart2.Init.WordLength = UART_WORDLENGTH_8B;
- huart2.Init.StopBits = UART_STOPBITS_1;
- huart2.Init.Parity = UART_PARITY_NONE;
- huart2.Init.Mode = UART_MODE_TX_RX;
- huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
- huart2.Init.OverSampling = UART_OVERSAMPLING_16;
- huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
- huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
- if (HAL_UART_Init(&huart2) != HAL_OK)
- {
- Error_Handler();
- }
- __HAL_UART_ENABLE_IT(&huart2, UART_IT_RXNE);
- // if(HAL_UART_Receive_IT(&huart2,aRxBuffer,1)!=HAL_OK)
- // {
- // Error_Handler();
- // }
- NVIC_SetPriority(USART2_IRQn, 0);
- HAL_NVIC_EnableIRQ(USART2_IRQn);
- }
- void HAL_UART_MspInit(UART_HandleTypeDef* huart)
- {
- GPIO_InitTypeDef GPIO_InitStruct;
- if(huart->Instance==USART1)
- {
- /* USER CODE BEGIN USART1_MspInit 0 */
- /* USER CODE END USART1_MspInit 0 */
- /* Peripheral clock enable */
- __HAL_RCC_USART1_CLK_ENABLE();
-
- /**USART1 GPIO Configuration
- PA9 ------> USART1_TX
- PA10 ------> USART1_RX
- */
- GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
- GPIO_InitStruct.Pull = GPIO_PULLUP;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
- GPIO_InitStruct.Alternate = GPIO_AF1_USART1;
- HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
- /* USER CODE BEGIN USART1_MspInit 1 */
- /* USER CODE END USART1_MspInit 1 */
- }
- else if(huart->Instance==USART2)
- {
- /* USER CODE BEGIN USART2_MspInit 0 */
- /* USER CODE END USART2_MspInit 0 */
- /* Peripheral clock enable */
- __HAL_RCC_USART2_CLK_ENABLE();
-
- /**USART2 GPIO Configuration
- PA2 ------> USART2_TX
- PA3 ------> USART2_RX
- */
- GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
- GPIO_InitStruct.Pull = GPIO_PULLUP;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
- GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
- HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
- /* USER CODE BEGIN USART2_MspInit 1 */
- /* USER CODE END USART2_MspInit 1 */
- }
- }
- void USART1_IRQHandler(void)
- {
- if((USART1->ISR & 0x20)==0x20)
- {
- RingBufWriteOne(&mowerRingBuffObj,USART1->RDR);
- }
- // else
- // {
- //
- // }
- //HAL_UART_IRQHandler(&huart1);
- }
- extern UART_HandleTypeDef huart2;
- extern tRingBufObject GprsRingBuffObj;
- void USART2_IRQHandler(void)
- {
- //uint8_t ret=0;
- if((USART2->ISR & 0x20)==0x20)
- {
- RingBufWriteOne(&GprsRingBuffObj,USART2->RDR);
- }
- // else
- // {
- //
- // }
- //ret=RingBufReadOne(&GprsRingBuffObj);
- //HAL_UART_Transmit(&huart2,&ret,1,20);
- //HAL_UART_IRQHandler(&huart2);
- }
复制代码
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