自学教程：C++ HAL_UART_DeInit函数代码示例

static uint8_t USBD_CDC_DeInit (USBD_HandleTypeDef *pdev, uint8_t cfgidx){  USBD_CDC_HandleTypeDef *hcdc = context;  unsigned index;  for (index = 0; index < NUM_OF_CDC_UARTS; index++,hcdc++)  {    /* Close EP IN */    USBD_LL_CloseEP(pdev, parameters[index].data_in_ep);      /* Close EP OUT */    USBD_LL_CloseEP(pdev, parameters[index].data_out_ep);      /* Close Command IN EP */    USBD_LL_CloseEP(pdev, parameters[index].command_ep);    /* DeInitialize the UART peripheral */    if (hcdc->UartHandle.Instance)      if(HAL_UART_DeInit(&hcdc->UartHandle) != HAL_OK)      {        /* Initialization Error */        Error_Handler();      }  }    return USBD_OK;}

/*#####################################################*/bool _uart_close(Uart_t *UartSettings){	HAL_UART_DeInit((UART_HandleTypeDef*)UartSettings->udata);	if(UartSettings->udata)		free(UartSettings->udata);	return true;}

void uart_deinit(pyb_uart_obj_t *uart_obj) {    uart_obj->is_enabled = false;    UART_HandleTypeDef *uart = &uart_obj->uart;    HAL_UART_DeInit(uart);    if (uart->Instance == USART1) {        __USART1_FORCE_RESET();        __USART1_RELEASE_RESET();        __USART1_CLK_DISABLE();    } else if (uart->Instance == USART2) {        __USART2_FORCE_RESET();        __USART2_RELEASE_RESET();        __USART2_CLK_DISABLE();    } else if (uart->Instance == USART3) {        __USART3_FORCE_RESET();        __USART3_RELEASE_RESET();        __USART3_CLK_DISABLE();    } else if (uart->Instance == UART4) {        __UART4_FORCE_RESET();        __UART4_RELEASE_RESET();        __UART4_CLK_DISABLE();    } else if (uart->Instance == USART6) {        __USART6_FORCE_RESET();        __USART6_RELEASE_RESET();        __USART6_CLK_DISABLE();    }}

void SleepMode(void){  GPIO_InitTypeDef GPIO_InitStruct;  /* Disable all GPIOs to reduce power */  MX_GPIO_Deinit();  /* Configure User push-button as external interrupt generator */  __HAL_RCC_GPIOC_CLK_ENABLE();  GPIO_InitStruct.Pin = B1_Pin;  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;  GPIO_InitStruct.Pull = GPIO_NOPULL;  HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);  HAL_UART_DeInit(&huart2);  /* Suspend Tick increment to prevent wakeup by Systick interrupt.     Otherwise the Systick interrupt will wake up the device within 1ms (HAL time base) */  HAL_SuspendTick();  __HAL_RCC_PWR_CLK_ENABLE();  /* Request to enter SLEEP mode */  HAL_PWR_EnterSLEEPMode(0, PWR_SLEEPENTRY_WFI);  /* Resume Tick interrupt if disabled prior to sleep mode entry*/  HAL_ResumeTick();  /* Reinitialize GPIOs */  MX_GPIO_Init();  /* Reinitialize UART2 */  MX_USART2_UART_Init();}

/**  * @brief  CDC_Itf_DeInit  *         DeInitializes the CDC media low layer  * @param  None  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL  */static int8_t CDC_Itf_DeInit(void){  /* DeInitialize the UART peripheral */  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    /* Initialization Error */    Error_Handler();  }  return (USBD_OK);}

void Debug_UARTConfig() {     UARTHandle.Instance = USART2;    UARTHandle.Init.BaudRate = UART_BAUDRATE;    UARTHandle.Init.WordLength = UART_WORDLENGTH_8B;    UARTHandle.Init.StopBits = UART_STOPBITS_1;    UARTHandle.Init.Parity = UART_PARITY_NONE;    UARTHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;    UARTHandle.Init.Mode = UART_MODE_TX_RX;    UARTHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;    HAL_UART_DeInit(&UARTHandle);    HAL_UART_Init(&UARTHandle);}

/** * @brief	Disables the RS232 interface * @param	None * @retval	None */static void prvDisableRs232Interface(){	HAL_NVIC_DisableIRQ(UART4_IRQn);	HAL_UART_DeInit(&UART_Handle);	__UART4_CLK_DISABLE();	xSemaphoreGive(xSemaphore);	prvRxBuffer1CurrentIndex = 0;	prvRxBuffer1Count = 0;	prvRxBuffer1State = BUFFERState_Writing;	prvRxBuffer2CurrentIndex = 0;	prvRxBuffer2Count = 0;	prvRxBuffer2State = BUFFERState_Writing;}

void HardwareSerial::begin(uint32_t baud) {	HAL_StatusTypeDef status;	if ( huart6.Init.BaudRate != baud ) {		HAL_UART_DeInit(&huart6);		huart6.Init.BaudRate = baud;		HAL_UART_Init(&huart6);	}	this->tx_in_progress = false;	this->rx_buffer_bytes_available = 0;	this->rx_buffer_index = 0;	receive_request_pending = false;	status = HAL_UART_Receive_IT(&huart6, &this->rx_buffer[this->rx_buffer_index], 1);}

/** * @brief	Disables the UART1 interface * @param	None * @retval	None */static void prvDisableUart1Interface(){	HAL_NVIC_DisableIRQ(USART1_IRQn);	HAL_UART_DeInit(&UART_Handle);	__USART1_CLK_DISABLE();	xSemaphoreGive(xSemaphore);	prvRxBuffer1CurrentIndex = 0;	prvRxBuffer1Count = 0;	prvRxBuffer1State = BUFFERState_Writing;	prvRxBuffer2CurrentIndex = 0;	prvRxBuffer2Count = 0;	prvRxBuffer2State = BUFFERState_Writing;	prvChannelIsEnabled = false;}

 void PX4FlowPortInit(void) {	 //*******************************************************	 //配置USART发送与接受		__USART1_CLK_ENABLE();		PX4_UartHandle.Instance        = USART1;		PX4_UartHandle.Init.BaudRate   = 115200;		PX4_UartHandle.Init.WordLength = UART_WORDLENGTH_8B;		PX4_UartHandle.Init.StopBits   = UART_STOPBITS_1;		PX4_UartHandle.Init.Parity     = UART_PARITY_NONE;		PX4_UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;		PX4_UartHandle.Init.Mode       = UART_MODE_TX_RX;		PX4_UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT; 		PX4_UartHandle.AdvancedInit.OverrunDisable=UART_ADVFEATURE_OVERRUN_DISABLE;//关闭OverRun		HAL_UART_DeInit(&PX4_UartHandle);//卸载USART1		HAL_UART_Init(&PX4_UartHandle);//装载USART1	 		   /* NVIC for USART, to catch the RX complete */    /*##-4- Put UART peripheral in reception process ###########################*/     /* Enable the UART Data Register not empty Interrupt */    __HAL_UART_ENABLE_IT(&PX4_UartHandle, UART_IT_RXNE);	 }

static int uart_init_peripheral(void){  __HAL_RCC_USART2_CLK_ENABLE();  __HAL_RCC_DMA1_CLK_ENABLE();  UARThandle.Instance                   = UART_INSTANCE;  UARThandle.Init.BaudRate              = UART_BAUDRATE;  UARThandle.Init.WordLength            = UART_WORDLENGTH_8B;  UARThandle.Init.StopBits              = UART_STOPBITS_1;  UARThandle.Init.Parity                = UART_PARITY_NONE;  UARThandle.Init.HwFlowCtl             = UART_HWCONTROL_NONE;  UARThandle.Init.OverSampling          = UART_OVERSAMPLING_8;  UARThandle.Init.Mode                  = UART_MODE_TX_RX;  DMAhandle_TX.Instance                 = DMA1_Stream6;  DMAhandle_TX.Init.Channel             = DMA_CHANNEL_4;  DMAhandle_TX.Init.Direction           = DMA_MEMORY_TO_PERIPH;  DMAhandle_TX.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;  DMAhandle_TX.Init.MemBurst            = DMA_MBURST_SINGLE;  DMAhandle_TX.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;  DMAhandle_TX.Init.MemInc              = DMA_MINC_ENABLE;  DMAhandle_TX.Init.Mode                = DMA_NORMAL;  DMAhandle_TX.Init.PeriphBurst         = DMA_PBURST_SINGLE;  DMAhandle_TX.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;  DMAhandle_TX.Init.PeriphInc           = DMA_PINC_DISABLE;  DMAhandle_TX.Init.Priority            = DMA_PRIORITY_LOW;  DMAhandle_RX                          = DMAhandle_TX;  DMAhandle_RX.Instance                 = DMA1_Stream5;  DMAhandle_RX.Init.Channel             = DMA_CHANNEL_4;  DMAhandle_RX.Init.Direction           = DMA_PERIPH_TO_MEMORY;  DMAhandle_RX.Init.Mode                = DMA_CIRCULAR;  UARThandle.hdmatx = &DMAhandle_TX;  UARThandle.hdmarx = &DMAhandle_RX;  HAL_UART_DeInit(&UARThandle);  HAL_UART_Init(&UARThandle);  UART_INSTANCE->BRR = (2u << 4u) | (5u); /* Baudrate = 2000000 with SYSCLK=168MHz,                                           * HAL is not very good at figuring this number out... */  HAL_DMA_DeInit(&DMAhandle_TX);  HAL_DMA_Init(&DMAhandle_TX);  HAL_DMA_DeInit(&DMAhandle_RX);  HAL_DMA_Init(&DMAhandle_RX);  NVIC_SetPriority(DMA1_Stream6_IRQn, UART_DMA_TX_IRQ_PRIO);  HAL_NVIC_EnableIRQ(DMA1_Stream6_IRQn);  NVIC_SetPriority(DMA1_Stream5_IRQn, UART_DMA_RX_IRQ_PRIO);  HAL_NVIC_EnableIRQ(DMA1_Stream5_IRQn);  /* Use uart data register as peripheral destination for TX */  DMAhandle_TX.Instance->PAR = (uint32_t) &(UARThandle.Instance->DR);  /* Set source and destination address and buffer length */  DMAhandle_RX.Instance->NDTR = RX_BUF_LEN;  DMAhandle_RX.Instance->PAR  = (uint32_t) &(UARThandle.Instance->DR);  DMAhandle_RX.Instance->M0AR = (uint32_t) dma_buffer_rx;  /* Enable UART as DMA enabled receiver */  UARThandle.Instance->CR3 |= USART_CR3_DMAR;  /* Enable transfer complete interrupt */  __HAL_DMA_ENABLE_IT(&DMAhandle_RX, DMA_IT_TC);  __HAL_DMA_ENABLE(&DMAhandle_RX);  return 0;}

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){#ifndef BOARD_IN_STOP_MODE  GPIO_InitTypeDef  GPIO_InitStruct;#endif  /* STM32F0xx HAL library initialization:       - Configure the Flash prefetch       - Systick timer is configured by default as source of time base, but user              can eventually implement his proper time base source (a general purpose              timer for example or other time source), keeping in mind that Time base              duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and              handled in milliseconds basis.       - Low Level Initialization     */  HAL_Init();  /* Configure the system clock to 48 MHz */  SystemClock_Config();    /* Configure LED3 */  BSP_LED_Init(LED3);#ifdef BOARD_IN_STOP_MODE    /* HSI must be UART clock source to be able to wake up the MCU */  __HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_HSI);#endif    /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */     UartHandle.Instance        = USARTx;  HAL_UART_DeInit(&UartHandle);   UartHandle.Init.BaudRate   = 9600;  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits   = UART_STOPBITS_1;  UartHandle.Init.Parity     = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  UartHandle.Init.Mode       = UART_MODE_TX_RX;  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;      if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }  #ifdef BOARD_IN_STOP_MODE      BSP_LED_On(LED3);    /* wait for two seconds before test start */    HAL_Delay(2000);     /* make sure that no UART transfer is on-going */    while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);   /* make sure that UART is ready to receive   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */      while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);  /* set the wake-up event:   * specify wake-up on RXNE flag */  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_READDATA_NONEMPTY;  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)  {    Error_Handler();   }   /* Enable the UART Wake UP from stop mode Interrupt */  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);    /* about to enter stop mode: switch off LED */  BSP_LED_Off(LED3);  /* enable MCU wake-up by UART */  HAL_UARTEx_EnableStopMode(&UartHandle);   /* enter stop mode */  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);  /* ... STOP mode ... */        SystemClock_Config_fromSTOP();  /* at that point, MCU has been awoken: the LED has been turned back on */  /* Wake Up based on RXNE flag successful */   HAL_UARTEx_DisableStopMode(&UartHandle);  /* wait for some delay */  HAL_Delay(100);//.........这里部分代码省略.........

static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_configure *cfg){    struct stm32_uart *uart;    RT_ASSERT(serial != RT_NULL);    RT_ASSERT(cfg != RT_NULL);    uart = (struct stm32_uart *)serial->parent.user_data;    uart->UartHandle.Init.BaudRate   = cfg->baud_rate;    uart->UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;    uart->UartHandle.Init.Mode       = UART_MODE_TX_RX;    uart->UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;    switch (cfg->data_bits)    {    case DATA_BITS_7:        uart->UartHandle.Init.WordLength = UART_WORDLENGTH_7B;        break;    case DATA_BITS_8:        uart->UartHandle.Init.WordLength = UART_WORDLENGTH_8B;        break;    case DATA_BITS_9:        uart->UartHandle.Init.WordLength = UART_WORDLENGTH_9B;        break;    default:        uart->UartHandle.Init.WordLength = UART_WORDLENGTH_8B;        break;    }    switch (cfg->stop_bits)    {    case STOP_BITS_1:        uart->UartHandle.Init.StopBits   = UART_STOPBITS_1;        break;    case STOP_BITS_2:        uart->UartHandle.Init.StopBits   = UART_STOPBITS_2;        break;    default:        uart->UartHandle.Init.StopBits   = UART_STOPBITS_1;        break;    }    switch (cfg->parity)    {    case PARITY_NONE:        uart->UartHandle.Init.Parity     = UART_PARITY_NONE;        break;    case PARITY_ODD:        uart->UartHandle.Init.Parity     = UART_PARITY_ODD;        break;    case PARITY_EVEN:        uart->UartHandle.Init.Parity     = UART_PARITY_EVEN;        break;    default:        uart->UartHandle.Init.Parity     = UART_PARITY_NONE;        break;    }    if (HAL_UART_DeInit(&uart->UartHandle) != HAL_OK)    {        return RT_ERROR;    }    if (HAL_UART_Init(&uart->UartHandle) != HAL_OK)    {        return RT_ERROR;    }    return RT_EOK;}

/** * @brief	Uart De-Initialization Function. * @param	numUart: numero della periferica UART da de-inizializzare. * 			numUart può assumere uno dei seguenti valori: * 			@arg HELPER_UART1: periferica UART 1; * 			@arg HELPER_UART2: periferica UART 2. * 			@arg HELPER_UART3: periferica UART 3; * 			@arg HELPER_UART4: periferica UART 4. * 			@arg HELPER_UART5: periferica UART 5; * 			@arg HELPER_UART6: periferica UART 6. * * @retval	None */HAL_StatusTypeDef HELPER_UART_DeInit(HELPER_UART_TypeDef numUart){	return HAL_UART_DeInit(HELPER_UART_GetHandle(numUart));}

void uartReconfigure(uartPort_t *uartPort){    /*RCC_PeriphCLKInitTypeDef RCC_PeriphClkInit;    RCC_PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_USART3|            RCC_PERIPHCLK_UART4|RCC_PERIPHCLK_UART5|RCC_PERIPHCLK_USART6|RCC_PERIPHCLK_UART7|RCC_PERIPHCLK_UART8;    RCC_PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Usart3ClockSelection = RCC_USART3CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Uart4ClockSelection = RCC_UART4CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Uart5ClockSelection = RCC_UART5CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Usart6ClockSelection = RCC_USART6CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Uart7ClockSelection = RCC_UART7CLKSOURCE_SYSCLK;    RCC_PeriphClkInit.Uart8ClockSelection = RCC_UART8CLKSOURCE_SYSCLK;    HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit);*/    HAL_UART_DeInit(&uartPort->Handle);    uartPort->Handle.Init.BaudRate = uartPort->port.baudRate;    // according to the stm32 documentation wordlen has to be 9 for parity bits    // this does not seem to matter for rx but will give bad data on tx!    uartPort->Handle.Init.WordLength = (uartPort->port.options & SERIAL_PARITY_EVEN) ? UART_WORDLENGTH_9B : UART_WORDLENGTH_8B;    uartPort->Handle.Init.StopBits = (uartPort->port.options & SERIAL_STOPBITS_2) ? USART_STOPBITS_2 : USART_STOPBITS_1;    uartPort->Handle.Init.Parity = (uartPort->port.options & SERIAL_PARITY_EVEN) ? USART_PARITY_EVEN : USART_PARITY_NONE;    uartPort->Handle.Init.HwFlowCtl = UART_HWCONTROL_NONE;    uartPort->Handle.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;    uartPort->Handle.Init.Mode = 0;    if (uartPort->port.mode & MODE_RX)        uartPort->Handle.Init.Mode |= UART_MODE_RX;    if (uartPort->port.mode & MODE_TX)        uartPort->Handle.Init.Mode |= UART_MODE_TX;    usartConfigurePinInversion(uartPort);#ifdef TARGET_USART_CONFIG    usartTargetConfigure(uartPort);#endif    if (uartPort->port.options & SERIAL_BIDIR)    {        HAL_HalfDuplex_Init(&uartPort->Handle);    }    else    {        HAL_UART_Init(&uartPort->Handle);    }    // Receive DMA or IRQ    if (uartPort->port.mode & MODE_RX)    {        if (uartPort->rxDMAStream)        {            uartPort->rxDMAHandle.Instance = uartPort->rxDMAStream;            uartPort->rxDMAHandle.Init.Channel = uartPort->rxDMAChannel;            uartPort->rxDMAHandle.Init.Direction = DMA_PERIPH_TO_MEMORY;            uartPort->rxDMAHandle.Init.PeriphInc = DMA_PINC_DISABLE;            uartPort->rxDMAHandle.Init.MemInc = DMA_MINC_ENABLE;            uartPort->rxDMAHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;            uartPort->rxDMAHandle.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;            uartPort->rxDMAHandle.Init.Mode = DMA_CIRCULAR;            uartPort->rxDMAHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;            uartPort->rxDMAHandle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;            uartPort->rxDMAHandle.Init.PeriphBurst = DMA_PBURST_SINGLE;            uartPort->rxDMAHandle.Init.MemBurst = DMA_MBURST_SINGLE;            uartPort->rxDMAHandle.Init.Priority = DMA_PRIORITY_MEDIUM;            HAL_DMA_DeInit(&uartPort->rxDMAHandle);            HAL_DMA_Init(&uartPort->rxDMAHandle);            /* Associate the initialized DMA handle to the UART handle */            __HAL_LINKDMA(&uartPort->Handle, hdmarx, uartPort->rxDMAHandle);            HAL_UART_Receive_DMA(&uartPort->Handle, (uint8_t*)uartPort->port.rxBuffer, uartPort->port.rxBufferSize);            uartPort->rxDMAPos = __HAL_DMA_GET_COUNTER(&uartPort->rxDMAHandle);        }        else        {            /* Enable the UART Parity Error Interrupt */            SET_BIT(uartPort->USARTx->CR1, USART_CR1_PEIE);            /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */            SET_BIT(uartPort->USARTx->CR3, USART_CR3_EIE);            /* Enable the UART Data Register not empty Interrupt */            SET_BIT(uartPort->USARTx->CR1, USART_CR1_RXNEIE);        }    }    // Transmit DMA or IRQ    if (uartPort->port.mode & MODE_TX) {        if (uartPort->txDMAStream) {            uartPort->txDMAHandle.Instance = uartPort->txDMAStream;            uartPort->txDMAHandle.Init.Channel = uartPort->txDMAChannel;            uartPort->txDMAHandle.Init.Direction = DMA_MEMORY_TO_PERIPH;            uartPort->txDMAHandle.Init.PeriphInc = DMA_PINC_DISABLE;            uartPort->txDMAHandle.Init.MemInc = DMA_MINC_ENABLE;            uartPort->txDMAHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;//.........这里部分代码省略.........

int armPortClose(void* port){	UART_HandleTypeDef* huart = (UART_HandleTypeDef*)port;	HAL_UART_DeInit(&huart);	return 0;}

 /* STM32F3xx HAL library initialization:       - Configure the Flash prefetch       - Systick timer is configured by default as source of time base, but user          can eventually implement his proper time base source (a general purpose          timer for example or other time source), keeping in mind that Time base          duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and          handled in milliseconds basis.       - Set NVIC Group Priority to 4       - Low Level Initialization			 */void com_DMA(){  HAL_Init();		  /* Configure the system clock to 168 Mhz */  SystemClock_Config();	  /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.USART_BaudRate   = 38400;  UartHandle.USART_WordLength = USART_WordLength_8b;  UartHandle.USART_StopBits   = USART_StopBits_1;  UartHandle.USART_Parity     = USART_Parity_No;  UartHandle.USART_HardwareFlowControl  = USART_HardwareFlowControl_None;  UartHandle.USART_Mode       = USART_Mode_Rx|USART_Mode_Tx;    if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }   if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }  #ifdef TRANSMITTER_BOARD  /* Configure User push-button */  BSP_PB_Init(BUTTON_USER, BUTTON_MODE_GPIO);    /* Wait for User push-button press before starting the Communication */  while (BSP_PB_GetState(BUTTON_USER) == RESET)  {  }    /* The board sends the message and expects to receive it back */    /*##-2- Start the transmission process #####################################*/    /* While the UART in reception process, user can transmit data through      "aTxBuffer" buffer */  if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK)  {    Error_Handler();  }    /*##-3- Wait for the end of the transfer ###################################*/    while (UartReady != SET)  {  }    /* Reset transmission flag */  UartReady = RESET;    /*##-4- Put UART peripheral in reception process ###########################*/    if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }   if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }    if(HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)  {    Error_Handler();  }#else    /* The board receives the message and sends it back */  /*##-2- Put UART peripheral in reception process ###########################*/    if(HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)  {    Error_Handler();  }    /*##-3- Wait for the end of the transfer ###################################*/    while (UartReady != SET)  {  }  /* Reset transmission flag *///.........这里部分代码省略.........

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){  /* STM32F0xx HAL library initialization:       - Configure the Flash prefetch       - Systick timer is configured by default as source of time base, but user          can eventually implement his proper time base source (a general purpose          timer for example or other time source), keeping in mind that Time base          duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and          handled in milliseconds basis.       - Low Level Initialization     */  HAL_Init();    /* Configure the system clock to 48 MHz */  SystemClock_Config();  /* Configure LED3 and LED4 */  BSP_LED_Init(LED3);  BSP_LED_Init(LED4);  /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.Instance        = USARTx;  UartHandle.Init.BaudRate   = 9600;  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits   = UART_STOPBITS_1;  UartHandle.Init.Parity     = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  UartHandle.Init.Mode       = UART_MODE_TX_RX;  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }    if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }    /*##-1- Configure the I2C peripheral ######################################*/  I2cHandle.Instance             = I2Cx;    I2cHandle.Init.Timing          = I2C_TIMING;  I2cHandle.Init.OwnAddress1     = I2C_ADDRESS;  I2cHandle.Init.AddressingMode  = I2C_ADDRESSINGMODE_7BIT;  I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;  I2cHandle.Init.OwnAddress2     = 0xFF;  I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;  I2cHandle.Init.NoStretchMode   = I2C_NOSTRETCH_DISABLE;      if(HAL_I2C_Init(&I2cHandle) != HAL_OK)  {    /* Initialization Error */    Error_Handler();      }  /* Enable the Analog I2C Filter */  HAL_I2CEx_ConfigAnalogFilter(&I2cHandle,I2C_ANALOGFILTER_ENABLE);    /* Configure User push-button Button*/  BSP_PB_Init(BUTTON_USER, BUTTON_MODE_GPIO);	do{		/* Wait for User push-button Button press before starting the Communication */		while (BSP_PB_GetState(BUTTON_USER) != GPIO_PIN_RESET)		{		}				/* Wait for User push-button Button release before starting the Communication */		while (BSP_PB_GetState(BUTTON_USER) != GPIO_PIN_SET)		{		}						void ndef_test(void);		float get_adc(void);				ndef_test();		//get_adc();	}while(1);}

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){  /* STM32F4xx HAL library initialization:       - Configure the Flash prefetch, instruction and Data caches       - Systick timer is configured by default as source of time base, but user         can eventually implement his proper time base source (a general purpose         timer for example or other time source), keeping in mind that Time base         duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and         handled in milliseconds basis.       - Set NVIC Group Priority to 4       - Low Level Initialization: global MSP (MCU Support Package) initialization     */  HAL_Init();  /* Configure the system clock to 100 MHz */  SystemClock_Config();  /* Configure LED2 */  BSP_LED_Init(LED2);  /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.Instance        = USARTx;  UartHandle.Init.BaudRate     = 115200;  UartHandle.Init.WordLength   = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits     = UART_STOPBITS_1;  UartHandle.Init.Parity       = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl    = UART_HWCONTROL_NONE;  UartHandle.Init.Mode         = UART_MODE_TX_RX;  UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }  if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }#ifdef TRANSMITTER_BOARD  /* Configure User push-button in Interrupt mode */  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);  /* Wait for User push-button press before starting the Communication.     In the meantime, LED2 is blinking */  while(UserButtonStatus == 0)  {      /* Toggle LED2*/      BSP_LED_Toggle(LED2);      HAL_Delay(100);  }  BSP_LED_Off(LED2);  /* The board sends the message and expects to receive it back */  /*##-2- Start the transmission process #####################################*/  /* While the UART in reception process, user can transmit data through     "aTxBuffer" buffer */  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE, 5000)!= HAL_OK)  {    Error_Handler();  }  /* Turn LED2 on: Transfer in transmission process is correct */  BSP_LED_On(LED2);  /*##-3- Put UART peripheral in reception process ###########################*/  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE, 5000) != HAL_OK)  {    Error_Handler();  }  /* Turn LED2 on: Transfer in reception process is correct */  BSP_LED_On(LED2);#else  /* The board receives the message and sends it back */  /*##-2- Put UART peripheral in reception process ###########################*/  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE, 0x1FFFFFF) != HAL_OK)  {    Error_Handler();  }//.........这里部分代码省略.........

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){  /* STM32F3xx HAL library initialization:       - Configure the Flash prefetch       - Configure the Systick to generate an interrupt each 1 msec       - Set NVIC Group Priority to 4       - Low Level Initialization     */  HAL_Init();  /* Configure the system clock to 64 MHz */  SystemClock_Config();    /* Configure LED1, LED2 and LED3 */  BSP_LED_Init(LED1);  BSP_LED_Init(LED2);  BSP_LED_Init(LED3);  /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.Instance        = USARTx;  UartHandle.Init.BaudRate     = 9600;  UartHandle.Init.WordLength   = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits     = UART_STOPBITS_1;  UartHandle.Init.Parity       = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl    = UART_HWCONTROL_NONE;  UartHandle.Init.Mode         = UART_MODE_TX_RX;  UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }    if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }  #ifdef TRANSMITTER_BOARD  /* Configure User push-button in Interrupt mode */  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);    /* Wait for User push-button press before starting the Communication.     In the meantime, LED3 is blinking */  while(UserButtonStatus == 0)  {      /* Toggle LED3*/      BSP_LED_Toggle(LED3);       HAL_Delay(100);  }    BSP_LED_Off(LED3);   /* The board sends the message and expects to receive it back */    /*##-2- Start the transmission process #####################################*/    /* While the UART in reception process, user can transmit data through      "aTxBuffer" buffer */  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE, 5000)!= HAL_OK)  {    Error_Handler();     }    /* Turn LED1 on: Transfer in transmission process is correct */  BSP_LED_On(LED1);    /*##-3- Put UART peripheral in reception process ###########################*/    if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE, 5000) != HAL_OK)  {    Error_Handler();    }    #else    /* The board receives the message and sends it back */  /*##-2- Put UART peripheral in reception process ###########################*/  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE, 0x1FFFFFF) != HAL_OK)  {    Error_Handler();  }   /* Turn LED1 on: Transfer in reception process is correct */  BSP_LED_On(LED1);    /*##-3- Start the transmission process #####################################*/  //.........这里部分代码省略.........

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){  /* STM32L0xx HAL library initialization:       - Configure the Flash prefetch       - Configure the Systick to generate an interrupt each 1 msec       - Low Level Initialization */  HAL_Init();  /* Configure LED3 */  BSP_LED_Init(LED3);  BSP_LED_Init(LED4);  /* Configure the system clock to 32 MHz */  SystemClock_Config();  /*##-1- Configure the LPUART peripheral ####################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* LPUART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.Instance        = USARTx;  HAL_UART_DeInit(&UartHandle);  UartHandle.Init.BaudRate   = 9600;  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits   = UART_STOPBITS_1;  UartHandle.Init.Parity     = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  UartHandle.Init.Mode       = UART_MODE_TX_RX;  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;  if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }#ifdef BOARD_IN_STOP_MODE    BSP_LED_On(LED3);  /* wait for two seconds before test start */  HAL_Delay(2000);    /* make sure that no LPUART transfer is on-going */   while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);  /* make sure that UART is ready to receive  * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);  /* set the wake-up event:   * specify wake-up on RXNE flag */  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_READDATA_NONEMPTY;  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)  {    Error_Handler();   }  /* Enable the LPUART Wake UP from stop mode Interrupt */  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);  /* about to enter stop mode: switch off LED */  BSP_LED_Off(LED3);  /* enable MCU wake-up by LPUART */  HAL_UARTEx_EnableStopMode(&UartHandle);  /* enter stop mode */  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);  /* ... STOP mode ... */    SystemClock_Config_fromSTOP();  /* at that point, MCU has been awoken: the LED has been turned back on */  /* Wake Up based on RXNE flag successful */   HAL_UARTEx_DisableStopMode(&UartHandle);  /* wait for some delay */  HAL_Delay(100);    /* Inform other board that wake up is successful */  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer1, COUNTOF(aTxBuffer1)-1, 5000)!= HAL_OK)    {    Error_Handler();  }    /*##-2- Wake Up second step  ###############################################*/  /* make sure that no UART transfer is on-going */     BSP_LED_On(LED3);  /* wait for two seconds before test start */  HAL_Delay(2000);    while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);  /* make sure that LPUART is ready to receive //.........这里部分代码省略.........

/**  * @brief  Main program.  * @param  None  * @retval None  */int main(void){  /* STM32F103xB HAL library initialization:       - Configure the Flash prefetch       - Systick timer is configured by default as source of time base, but user          can eventually implement his proper time base source (a general purpose          timer for example or other time source), keeping in mind that Time base          duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and          handled in milliseconds basis.       - Set NVIC Group Priority to 4       - Low Level Initialization     */  HAL_Init();    /* Configure the system clock to 64 MHz */  SystemClock_Config();    /*## Configure peripherals #################################################*/    /* Initialize LED on board */  BSP_LED_Init(LED2);    /* Configure User push-button in Interrupt mode */  BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);    /* Configure the ADC peripheral */  //ADC_Config();  /*uart configuration*/			 UartHandle.Instance        = USARTx;  UartHandle.Init.BaudRate   = 9600;  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits   = UART_STOPBITS_1;  UartHandle.Init.Parity     = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  UartHandle.Init.Mode       = UART_MODE_TX_RX;  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }    if(HAL_UART_Init(&UartHandle) != HAL_OK)  {     Error_Handler();  }	// 	// 	//   /* Run the ADC calibration */  //   if (HAL_ADCEx_Calibration_Start(&AdcHandle) != HAL_OK)//   {//     /* Calibration Error *///     Error_Handler();//   }// #if defined(ADC_TRIGGER_FROM_TIMER)//   /* Configure the TIM peripheral *///   TIM_Config();// #endif /* ADC_TRIGGER_FROM_TIMER *///   /* Note: This example, on some other STM32 boards, is performing            *///   /*       DAC configuration here.                                            *///   /*       On STM32F103RB-Nucleo, the device has no DAC available,            *///   /*       therefore analog signal must be supplied externally.               *///   /*## Enable peripherals ####################################################*/// #if defined(ADC_TRIGGER_FROM_TIMER)//   /* Timer enable *///   if (HAL_TIM_Base_Start(&TimHandle) != HAL_OK)//   {//     /* Counter Enable Error *///     Error_Handler();//   }// #endif /* ADC_TRIGGER_FROM_TIMER *///   /* Note: This example, on some other STM32 boards, is performing            *///   /*       DAC signal generation here.                                        *///   /*       On STM32F103RB-Nucleo, the device has no DAC available,            *///   /*       therefore analog signal must be supplied externally.               *///   /*## Start ADC conversions #################################################*///   //   /* Start ADC conversion on regular group with transfer by DMA *///   if (HAL_ADC_Start_DMA(&AdcHandle,//                         (uint32_t *)aADCxConvertedValues,//                         ADCCONVERTEDVALUES_BUFFER_SIZE//                        ) != HAL_OK)//   {//     /* Start Error *///     Error_Handler();//   }//   //     if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)//   {//.........这里部分代码省略.........

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){  uint8_t index;  uint8_t *ptr;  uint32_t retr;    /* STM32F0xx HAL library initialization:  - Configure the Flash prefetch  - Systick timer is configured by default as source of time base, but user   can eventually implement his proper time base source (a general purpose   timer for example or other time source), keeping in mind that Time base   duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and   handled in milliseconds basis.  - Low Level Initialization  */  HAL_Init();    /* Configure LED3, LED4, LED5 and LED6 */  BSP_LED_Init(LED1);  BSP_LED_Init(LED2);  BSP_LED_Init(LED3);  BSP_LED_Init(LED4);    /* Configure the system clock to 168 Mhz */  SystemClock_Config();    /* Set the uart instance */  UartHandle[USART1_INDEX].Instance        = USARTx(1);  UartHandle[USART2_INDEX].Instance        = USARTx(2);  UartHandle[USART3_INDEX].Instance        = USARTx(3);  UartHandle[USART4_INDEX].Instance        = USARTx(4);  UartHandle[USART5_INDEX].Instance        = USARTx(5);  UartHandle[USART6_INDEX].Instance        = USARTx(6);  UartHandle[USART7_INDEX].Instance        = USARTx(7);  UartHandle[USART8_INDEX].Instance        = USARTx(8);    for (index = 0; index < USART__INDEX_MAX; index++)  {    /*##-1- Configure the UARTs peripheral ######################################*/    /* Put the USART peripheral in the Asynchronous mode (UART Mode) */    /* UART configured as follows:    - Word Length = 8 Bits    - Stop Bit = One Stop bit    - Parity = None    - BaudRate = 9600 baud    - Hardware flow control disabled (RTS and CTS signals) */    UartHandle[index].Init.BaudRate   = 9600;    UartHandle[index].Init.WordLength = UART_WORDLENGTH_8B;    UartHandle[index].Init.StopBits   = UART_STOPBITS_1;    UartHandle[index].Init.Parity     = UART_PARITY_NONE;    UartHandle[index].Init.HwFlowCtl  = UART_HWCONTROL_NONE;    UartHandle[index].Init.Mode       = UART_MODE_TX_RX;    UartHandle[index].AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;     if(HAL_UART_DeInit(&UartHandle[index]) != HAL_OK)    {      Error_Handler();    }      if(HAL_UART_Init(&UartHandle[index]) != HAL_OK)    {      Error_Handler();    }  }    do {        /* counter for the number of transfert complete */    count++;        /* initialize the global variable to handle the data transfert */    TransferComplete = FALSE;    uart_tx_transfert = 0;    memset(aRxBuffer, 0x0, BUFFER_SIZE * USART__INDEX_MAX);    memset(UartTransfertState, 0x00, sizeof(DEMO_UART_TransfertSate)*USART__INDEX_MAX);        /* Prepare all uart to receive a data packet */    for (index = 0; index < USART__INDEX_MAX; index++)    {        if(HAL_UART_Receive_IT(&UartHandle[index], (uint8_t*)aRxBuffer[index], PACKET_SIZE)!= HAL_OK)      {        Error_Handler();      }    }        /* Send the first packet from UART1 to initiate the loop transfer */    if(HAL_UART_Transmit(&UartHandle[USART1_INDEX], (uint8_t*)aTxBuffer, PACKET_SIZE, 2000)!= HAL_OK)    {      Error_Handler();    }    UartTransfertState[USART1_INDEX].tx_counter++;        /* Loop tranfert handling, when a data has been transfert start the next transfert */     do     {      /* Delay can be added for the demo : to let time to see counter incrementation on the live watch *///.........这里部分代码省略.........

/**  * @brief  ComPort_Config  *         Configure the COM Port with the parameters received from host.  * @param  None.  * @retval None  * @note   When a configuration is not supported, a default value is used.  */static void ComPort_Config(void){#if 0  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    /* Initialization Error */    Error_Handler();  }    /* set the Stop bit */  switch (LineCoding.format)  {  case 0:    UartHandle.Init.StopBits = UART_STOPBITS_1;    break;  case 2:    UartHandle.Init.StopBits = UART_STOPBITS_2;    break;  default :    UartHandle.Init.StopBits = UART_STOPBITS_1;    break;  }    /* set the parity bit*/  switch (LineCoding.paritytype)  {  case 0:    UartHandle.Init.Parity = UART_PARITY_NONE;    break;  case 1:    UartHandle.Init.Parity = UART_PARITY_ODD;    break;  case 2:    UartHandle.Init.Parity = UART_PARITY_EVEN;    break;  default :    UartHandle.Init.Parity = UART_PARITY_NONE;    break;  }    /*set the data type : only 8bits and 9bits is supported */  switch (LineCoding.datatype)  {  case 0x07:    /* With this configuration a parity (Even or Odd) must be set */    UartHandle.Init.WordLength = UART_WORDLENGTH_8B;    break;  case 0x08:    if(UartHandle.Init.Parity == UART_PARITY_NONE)    {      UartHandle.Init.WordLength = UART_WORDLENGTH_8B;    }    else     {      UartHandle.Init.WordLength = UART_WORDLENGTH_9B;    }        break;  default :    UartHandle.Init.WordLength = UART_WORDLENGTH_8B;    break;  }    UartHandle.Init.BaudRate     = LineCoding.bitrate;  UartHandle.Init.HwFlowCtl    = UART_HWCONTROL_NONE;  UartHandle.Init.Mode         = UART_MODE_TX_RX;  UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;    if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    /* Initialization Error */    Error_Handler();  }  /* Start reception: provide the buffer pointer with offset and the buffer size */  HAL_UART_Receive_IT(&UartHandle, (uint8_t *)(UserTxBuffer + UserTxBufPtrIn), 1);#endif}

static void ComPort_Config(USBD_CDC_HandleTypeDef *hcdc){  if (hcdc->UartHandle.State != HAL_UART_STATE_RESET)    if (HAL_UART_DeInit(&hcdc->UartHandle) != HAL_OK)    {      /* Initialization Error */      Error_Handler();    }    /* set the Stop bit */  switch (hcdc->LineCoding.format)  {  case 0:    hcdc->UartHandle.Init.StopBits = UART_STOPBITS_1;    break;  case 2:    hcdc->UartHandle.Init.StopBits = UART_STOPBITS_2;    break;  default:    hcdc->UartHandle.Init.StopBits = UART_STOPBITS_1;    break;  }    /* set the parity bit*/  switch (hcdc->LineCoding.paritytype)  {  case 0:    hcdc->UartHandle.Init.Parity = UART_PARITY_NONE;    break;  case 1:    hcdc->UartHandle.Init.Parity = UART_PARITY_ODD;    break;  case 2:    hcdc->UartHandle.Init.Parity = UART_PARITY_EVEN;    break;  default:    hcdc->UartHandle.Init.Parity = UART_PARITY_NONE;    break;  }    /*set the data type : only 8bits and 9bits is supported */  switch (hcdc->LineCoding.datatype)  {  case 0x07:    /* With this configuration a parity (Even or Odd) must be set */    hcdc->UartHandle.Init.WordLength = UART_WORDLENGTH_8B;    break;  case 0x08:    if(hcdc->UartHandle.Init.Parity == UART_PARITY_NONE)    {      hcdc->UartHandle.Init.WordLength = UART_WORDLENGTH_8B;    }    else     {      hcdc->UartHandle.Init.WordLength = UART_WORDLENGTH_9B;    }        break;  default:    hcdc->UartHandle.Init.WordLength = UART_WORDLENGTH_8B;    break;  }    hcdc->UartHandle.Init.BaudRate = hcdc->LineCoding.bitrate;  hcdc->UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  hcdc->UartHandle.Init.Mode       = UART_MODE_TX_RX;    if(HAL_UART_Init(&hcdc->UartHandle) != HAL_OK)  {    /* Initialization Error */    Error_Handler();  }  /* Start reception */  HAL_UART_Receive_DMA(&hcdc->UartHandle, (uint8_t *)(hcdc->InboundBuffer), INBOUND_BUFFER_SIZE);}

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){  /* STM32F0xx HAL library initialization:       - Configure the Flash prefetch       - Systick timer is configured by default as source of time base, but user          can eventually implement his proper time base source (a general purpose          timer for example or other time source), keeping in mind that Time base          duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and          handled in milliseconds basis.       - Low Level Initialization     */  HAL_Init();    /* Configure LED2 */  BSP_LED_Init(LED2);  /* Configure the system clock to 48 MHz */  SystemClock_Config();  /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.Instance        = USARTx;  UartHandle.Init.BaudRate   = 9600;  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits   = UART_STOPBITS_1;  UartHandle.Init.Parity     = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  UartHandle.Init.Mode       = UART_MODE_TX_RX;  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;   if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }    if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }  #ifdef TRANSMITTER_BOARD  /* Configure User push-button in Interrupt mode */  BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);    /* Wait for User push-button press before starting the Communication.     In the meantime, LED2 is blinking */  while(UserButtonStatus == 0)  {      /* Toggle LED2*/      BSP_LED_Toggle(LED2);       HAL_Delay(100);  }    BSP_LED_Off(LED2);       /* The board sends the message and expects to receive it back */    /*##-2- Start the transmission process #####################################*/    /* While the UART in reception process, user can transmit data through      "aTxBuffer" buffer */  if(HAL_UART_Transmit_IT(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK)  {    Error_Handler();  }    /*##-3- Wait for the end of the transfer ###################################*/     while (UartReady != SET)  {  }    /* Reset transmission flag */  UartReady = RESET;    /*##-4- Put UART peripheral in reception process ###########################*/    if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)  {    Error_Handler();  }#else    /* The board receives the message and sends it back */  /*##-2- Put UART peripheral in reception process ###########################*/    if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)  {//.........这里部分代码省略.........

/**  * @brief  Main program  * @param  None  * @retval None  */int main(void){#ifdef TRANSMITTER_BOARD  GPIO_InitTypeDef  GPIO_InitStruct;#endif  /* STM32F0xx HAL library initialization:       - Configure the Flash prefetch       - Systick timer is configured by default as source of time base, but user              can eventually implement his proper time base source (a general purpose              timer for example or other time source), keeping in mind that Time base              duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and              handled in milliseconds basis.       - Low Level Initialization     */  HAL_Init();  /* Configure the system clock to 48 MHz */  SystemClock_Config();    /* Configure LED3 */  BSP_LED_Init(LED3);#ifdef TRANSMITTER_BOARD  /* Configure PA.12 (Arduino D2) as input with External interrupt */  GPIO_InitStruct.Pin = GPIO_PIN_12;  GPIO_InitStruct.Pull = GPIO_PULLUP;  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;  /* Enable GPIOA clock */  __HAL_RCC_GPIOA_CLK_ENABLE();  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);  /* Enable and set PA.12 (Arduino D2) EXTI Interrupt to the lowest priority */  NVIC_SetPriority((IRQn_Type)(EXTI4_15_IRQn), 0x03);  HAL_NVIC_EnableIRQ((IRQn_Type)(EXTI4_15_IRQn));  /* Wait for the user to set GPIOA to GND before starting the Communication.     In the meantime, LED3 is blinking */  while(VirtualUserButtonStatus == 0)  {      /* Toggle LED3*/      BSP_LED_Toggle(LED3);      HAL_Delay(100);  }  BSP_LED_Off(LED3);#endif  /*##-1- Configure the UART peripheral ######################################*/  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */  /* UART configured as follows:      - Word Length = 8 Bits      - Stop Bit = One Stop bit      - Parity = None      - BaudRate = 9600 baud      - Hardware flow control disabled (RTS and CTS signals) */  UartHandle.Instance        = USARTx;  UartHandle.Init.BaudRate   = 9600;  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;  UartHandle.Init.StopBits   = UART_STOPBITS_1;  UartHandle.Init.Parity     = UART_PARITY_NONE;  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;  UartHandle.Init.Mode       = UART_MODE_TX_RX;  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;  if(HAL_UART_DeInit(&UartHandle) != HAL_OK)  {    Error_Handler();  }    if(HAL_UART_Init(&UartHandle) != HAL_OK)  {    Error_Handler();  }  #ifdef TRANSMITTER_BOARD    /* The board sends the message and expects to receive it back */  /* DMA is programmed for reception before starting the transmission, in order to     be sure DMA Rx is ready when board 2 will start transmitting */  /*##-2- Program the Reception process #####################################*/    if(HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)  {    Error_Handler();  }  /*##-3- Start the transmission process #####################################*/    /* While the UART in reception process, user can transmit data through      "aTxBuffer" buffer */  if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK)  {    Error_Handler();  }    /*##-4- Wait for the end of the transfer ###################################*/  //.........这里部分代码省略.........