main.c

STM32 库文件

/**
  ******************************************************************************
  * @file USART/IrDA/Receive/main.c 
  * @author  MCD Application Team
  * @version  V3.0.0
  * @date  04/06/2009
  * @brief  Main program body
  ******************************************************************************
  * @copy
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "platform_config.h"

/** @addtogroup StdPeriph_Examples
  * @{
  */

/** @addtogroup USART_IrDA_Receive
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define  NOKEY  0x00
#define  SEL    0x01
#define  RIGHT  0x02
#define  LEFT   0x03
#define  UP     0x04
#define  DOWN   0x05

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
USART_InitTypeDef USART_InitStructure;
uint8_t ReceivedData = 0;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);

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

/**
  * @brief  Main program
  * @param  None
  * @retval : None
  */
int main(void)
{
  /* System Clocks Configuration */
  RCC_Configuration();

  /* Configure the GPIO ports */
  GPIO_Configuration();

/* USART3 configuration ------------------------------------------------------*/
  /* USART3 configured as follow:
        - BaudRate = 115200 baud  
        - Word Length = 8 Bits
        - One Stop Bit
        - No parity
        - Hardware flow control disabled (RTS and CTS signals)
        - Receive and transmit enabled
  */
  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;
  
  /* Configure the USART3 */
  USART_Init(USART3, &USART_InitStructure);
  /* Enable the USART3 */
  USART_Cmd(USART3, ENABLE);

  /* Set the USART3 prescaler */
  USART_SetPrescaler(USART3, 0x1);
  /* Configure the USART3 IrDA mode */
  USART_IrDAConfig(USART3, USART_IrDAMode_Normal);

  /* Enable the USART3 IrDA mode */
  USART_IrDACmd(USART3, ENABLE);

  while (1)
  {
    /* Wait until a byte is received */
    while(USART_GetFlagStatus(USART3, USART_FLAG_RXNE) == RESET)
    {
    }
    /* Read the received byte */
    ReceivedData = USART_ReceiveData(USART3);

    switch(ReceivedData)
    {
      case UP:
        GPIO_Write(GPIO_LED, GPIO_Pin_6);     
        break;
      case DOWN:
        GPIO_Write(GPIO_LED, GPIO_Pin_7);
        break;
      case LEFT:
        GPIO_Write(GPIO_LED, GPIO_Pin_8);
        break;
      case RIGHT:
        GPIO_Write(GPIO_LED, GPIO_Pin_9);
        break;
      case SEL:
        GPIO_Write(GPIO_LED, GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9);
        break;
      case NOKEY:
        break;
      default:
        break;
    }
  }
}

/**
  * @brief  Configures the different system clocks.
  * @param  None
  * @retval : None
  */
void RCC_Configuration(void)
{
  /* Setup the microcontroller system. Initialize the Embedded Flash Interface,  
     initialize the PLL and update the SystemFrequency variable. */
  SystemInit();
    
  /* Enable GPIOC, GPIO_LED and AFIO clocks */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIO_LED |  
                         RCC_APB2Periph_AFIO, ENABLE);
  /* Enable USART3 clocks */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
}

/**
  * @brief  Configures the different GPIO ports.
  * @param  None
  * @retval : None
  */
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable the USART3 Pins Partial Software Remapping */
  GPIO_PinRemapConfig(GPIO_PartialRemap_USART3, ENABLE);

  /* Configure USART3 Tx (PC.10)as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
  
  /* Configure USART3 Rx PC.11 as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
  
  /* Configure GPIO_LED Pin 6, GPIO_LED Pin 7, GPIO_LED Pin 8 and GPIO_LED Pin 9 as output push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIO_LED, &GPIO_InitStructure);
}

#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

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/