STM32___USART学习

#include "stm32f10x.h"
#include "USART.h"
 
void USART1_Configuration(void)
{
 　　USART_InitTypeDef USART_InitStructure;
 
 　　USART_InitStructure.USART_BaudRate            = 115200  ;  //波特率
 　　USART_InitStructure.USART_WordLength          = USART_WordLength_8b;  //发送的字长
 　　USART_InitStructure.USART_StopBits            = USART_StopBits_1;   //停止位
　　 USART_InitStructure.USART_Parity              = USART_Parity_No ;   //奇偶校验位
 　　USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;    //硬件控制流
 　　USART_InitStructure.USART_Mode                = USART_Mode_Rx | USART_Mode_Tx;    //模式选择
 
 　　USART_Init(USART1, &USART_InitStructure);

 　　USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //接收中断使能
 
 　　USART_Cmd(USART1, ENABLE);    
}

void USART1_SendByte(u16 Data)
{ 
   　　while (!(USART1->SR & USART_FLAG_TXE));
   　　USART1->DR = (Data & (uint16_t)0x01FF);  
}

void USART1Write(u8* data,u16 len)
{
 　　u16 i;
 　　for (i=0; i<len; i++)
 　　{
  　　　　USART1_SendByte(data[i]);
 　　}  

}

/*
void USART2_SendByte(u16 Data)
{ 
   　　while (!(USART2->SR & USART_FLAG_TXE));
   　　USART2->DR = (Data & (uint16_t)0x01FF); 
  
}

void USART2Write(u8* data,u16 len)
{
 　　u16 i;
 　　for (i=0; i<len; i++)

　　{
  　　USART2_SendByte(data[i]);
 　　}
} 

void USART2_Configuration(void)
{
 　　USART_InitTypeDef USART_InitStructure;
 　　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);    

}

void USART2_IRQHandler(void)
{
 　　u8 c;
 　　if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
 　　{  
    　　　　 c=USART2->DR;
 　　　　 USART2_SendByte(c);      
 　　}
 
}

*/