【AT-START-F407测评】+ 串口收发

#include "at32f4xx.h"

#include "at32_board.h"



/** @addtogroup AT32F407_StdPeriph_Examples

  * @{

  */



/** @addtogroup USART_Interrupt

  * @{

  */ 

  

/* Private typedef -----------------------------------------------------------*/

typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;



/* Private define ------------------------------------------------------------*/

#define TxBufferSize1   (countof(TxBuffer1) - 1)

#define TxBufferSize2   (countof(TxBuffer2) - 1)

#define RxBufferSize1   TxBufferSize2

#define RxBufferSize2   TxBufferSize1



/* Private macro -------------------------------------------------------------*/

#define countof(a)   (sizeof(a) / sizeof(*(a)))



/* Private variables ---------------------------------------------------------*/

USART_InitType USART_InitStructure;

uint8_t TxBuffer1[] = "USART Interrupt Example: USART2 -> USART3 using Interrupt";

uint8_t TxBuffer2[] = "USART Interrupt Example: USART3 -> USART2 using Interrupt";

uint8_t RxBuffer1[RxBufferSize1];

uint8_t RxBuffer2[RxBufferSize2];

__IO uint8_t TxCounter1 = 0x00;

__IO uint8_t TxCounter2 = 0x00;

__IO uint8_t RxCounter1 = 0x00; 

__IO uint8_t RxCounter2 = 0x00;

uint8_t NbrOfDataToTransfer1 = TxBufferSize1;

uint8_t NbrOfDataToTransfer2 = TxBufferSize2;

uint8_t NbrOfDataToRead1 = RxBufferSize1;

uint8_t NbrOfDataToRead2 = RxBufferSize2;

__IO TestStatus TransferStatus1 = FAILED; 

__IO TestStatus TransferStatus2 = FAILED;



/* Private function prototypes -----------------------------------------------*/

void RCC_Configuration(void);

void GPIO_Configuration(void);

void NVIC_Configuration(void);

TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);



/* Private functions ---------------------------------------------------------*/



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]   Main program

  * @param  None

  * @retval None

  */

int main(void)

{  

  /* System Clocks Configuration */

  RCC_Configuration();

       

  /* NVIC configuration */

  NVIC_Configuration();



  /* Configure the GPIO ports */

  GPIO_Configuration();



  /* Initialize Leds mounted on board */

  AT32_Board_Init();

  

  /* USART2 and USART3 configuration ------------------------------------------------------*/

  /* USART2 and USART3 configured as follow:

        - BaudRate = 9600 baud  

        - Word Length = 8 Bits

        - One Stop Bit

        - No parity

        - Hardware flow control disabled (RTS and CTS signals)

        - Receive and transmit enabled

  */

  USART_StructInit(&USART_InitStructure);

  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;



  /* Configure USART2 */

  USART_Init(USART2, &USART_InitStructure);

  

  

  /* Enable USART2 Receive and Transmit interrupts */

  USART_INTConfig(USART2, USART_INT_RDNE, ENABLE);

  //USART_INTConfig(USART2, USART_INT_TDE, ENABLE);



  

  /* Enable the USART2 */

  USART_Cmd(USART2, ENABLE);

  



  while(1)

        {

        }

}



/**

  * @brief  Configures the different system clocks.

  * @param  None

  * @retval None

  */

void RCC_Configuration(void)

{   

  /* Enable GPIO clock */

  RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOA | RCC_APB2PERIPH_GPIOD | RCC_APB2PERIPH_GPIOC | RCC_APB2PERIPH_AFIO, ENABLE);



  /* Enable USART2 Clock */

  RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_USART2, ENABLE); 



  /* Enable USART3 Clock */

  //RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_USART3, ENABLE);  

}



/**

  * @brief  Configures the different GPIO ports.

  * @param  None

  * @retval None

  */

void GPIO_Configuration(void)

{

  GPIO_InitType GPIO_InitStructure;



  /* Enable the USART3 Pins Software Remapping */

  //GPIO_PinsRemapConfig(GPIO_PartialRemap_USART3, ENABLE);

  

  /* Enable the USART2 Pins Software Remapping */

  //GPIO_PinsRemapConfig(GPIO_Remap_USART2, ENABLE);  





  /* Configure USART2 Rx as input floating */

  GPIO_InitStructure.GPIO_Pins = GPIO_Pins_3;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

  GPIO_Init(GPIOA, &GPIO_InitStructure);

  

  /* Configure USART3 Rx as input floating */

//  GPIO_InitStructure.GPIO_Pins = GPIO_Pins_11;

//  GPIO_Init(GPIOC, &GPIO_InitStructure);  

  

  /* Configure USART2 Tx as alternate function push-pull */

  GPIO_InitStructure.GPIO_Pins = GPIO_Pins_2;

  GPIO_InitStructure.GPIO_MaxSpeed = GPIO_MaxSpeed_50MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_Init(GPIOA, &GPIO_InitStructure);



//  /* Configure USART3 Tx as alternate function push-pull */

//  GPIO_InitStructure.GPIO_Pins = GPIO_Pins_10;

//  GPIO_Init(GPIOC, &GPIO_InitStructure);  

}

/**

  * @brief  Configures the nested vectored interrupt controller.

  * @param  None

  * @retval None

  */

void NVIC_Configuration(void)

{

  NVIC_InitType NVIC_InitStructure;



  /* Configure the NVIC Preemption Priority Bits */  

  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

  

  /* Enable the USART2 Interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);



  /* Enable the USART3 Interrupt */

//  NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;

//  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

//  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;

//  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

//  NVIC_Init(&NVIC_InitStructure);

}



/**

  * @brief  Compares two buffers.

  * @param  pBuffer1, pBuffer2: buffers to be compared.

  * @param  BufferLength: buffer's length

  * @retval PASSED: pBuffer1 identical to pBuffer2

  *         FAILED: pBuffer1 differs from pBuffer2

  */

TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)

{

  while(BufferLength--)

  {

    if(*pBuffer1 != *pBuffer2)

    {

      return FAILED;

    }



    pBuffer1++;

    pBuffer2++;

  }



  return PASSED;

}



#ifdef  USE_FULL_ASSERT



/**

  * @brief  Reports the name of the source file and the source line number

  *         where the assert_param error has occurred.

  * @param  file: pointer to the source file name

  * @param  line: assert_param error line source number

  * @retval None

  */

void assert_failed(uint8_t* file, uint32_t line)

{ 

  /* User can add his own implementation to report the file name and line number,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */



  /* Infinite loop */

  while (1)

  {}

}



#endif



/**

  * @}

  */ 



/**

  * @}

  */ 



void USART2_IRQHandler(void)

{

  if(USART_GetITStatus(USART2, USART_INT_RDNE) != RESET)

  {

    /* Read one byte from the receive data register */

    RxBuffer1[0] = USART_ReceiveData(USART2);

                /* Write one byte to the transmit data register */

    USART_SendData(USART2, RxBuffer1[0]);

    

  }

//  

//  if(USART_GetITStatus(USART2, USART_INT_TDE) != RESET)

//  {   

//    /* Write one byte to the transmit data register */

//    USART_SendData(USART2, TxBuffer1[TxCounter1++]);



//    if(TxCounter1 == NbrOfDataToTransfer1)

//    {

//      /* Disable the USART2 Transmit interrupt */

//      USART_INTConfig(USART2, USART_INT_TDE, DISABLE);

//    }    

//  }

}