uart.c

基于STM32的双极性逆变器软件

#include "stm32f10x_lib.h"
/*******************************************************************************
* Function Name  : USART_Configuration
* Description    : Configures the USART1.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void USART_Configuration(void)
{
  USART_InitTypeDef USART_InitStructure;

  /* Enable USARTx clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

  /* USART1 configuration ----------------------------------------------------*/
  /* USART1 configured as follow:
        - BaudRate = 115200 baud  
        - Word Length = 8 Bits
        - One Stop Bit
        - No parity
        - Receive and transmit enabled
        - Hardware flow control disabled (RTS and CTS signals)  
  */
  USART_InitStructure.USART_BaudRate = 9600;
//  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_Mode = USART_Mode_Rx | USART_Mode_Tx;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

  USART_Init(USART1, &USART_InitStructure);

   // 根据USART_InitStructure中指定的参数初始化外设USARTx寄存器

  /* Enable USART1 Receive and Transmit interrupts */
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
  USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
 

  /* Enable USART1 */
  USART_Cmd(USART1, ENABLE);
}

/*******************************************************************************
* Function Name  : SerialPutChar
* Description    : Print a character on the HyperTerminal
* Input          : - c: The character to be printed
* Output         : None
* Return         : None
*******************************************************************************/
void SerialPutChar(char c)
{
  USART_SendData(USART1, c);
  while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}

/*******************************************************************************
* Function Name  : Serial_PutString
* Description    : Print a string on the HyperTerminal
* Input          : - s: The string to be printed
* Output         : None
* Return         : None
*******************************************************************************/
void Serial_PutString(u8 *s)
{
  while (*s != '\0')
  {
    SerialPutChar(*s);
    s ++;
  }
}

/*unsigned char To_16jz(unsigned int ndata)      //将ASCII码转换为16进制数
//0x64的ASCII码是54 52 其中6的ASCII是54，4的ASCII是52所以要将5452还原成0x64
{unsigned char ndata1,ndata2,ndata3;
 ndata1=ndata&0X00FF;
 if((ndata1>=0X30)&&(ndata1<=0X39))
      ndata1=ndata1&0X0F;
 else 
    if((ndata1>=0X41)&&(ndata1<=0X46)) 
      ndata1=ndata1-0X41+0X0A;
 ndata2=(ndata&0XFF00)>>8;
 if((ndata2>=0X30)&&(ndata2<=0X39)) 
      ndata2=ndata2&0X0F;
 else
    if((ndata2>=0X41)&&(ndata2<=0X46)) 
     ndata2=ndata2-0X41+0X0A;
 ndata3=(ndata2<<4)|ndata1;
 return(ndata3);
}	 */