#include "stm32f10x_lib.h"  #define uint8 u8
#define uint16 u16
#define uint32 u32 #include "NVIC_Init.h"
#include "Rcc_Init.h"
#include "Usart_Init.h"
void GPIO_Configuration(void);
void delay(u8 time);
u8 i;
int main(void)
{
  RCC_Configuration();
  GPIO_Configuration();
  Usart_Init(); 
  while(1)
  {
  delay(100);
  }
}
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA,ENABLE);
  /* Configure USART1 Tx (PA.09) as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
   
  /* Configure USART1 Rx (PA.10) as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void delay(u8 time)
{   while(time--);
} //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void Usart_Init(void)
{
  USART_InitTypeDef USART_InitStructure;
  USART_ClockInitTypeDef  USART_ClockInitStructure;
/* USART1 configuration ----------------------------------------------- -------*/
  /* USART1 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 Clock disabled
        - USART CPOL: Clock is active low
        - USART CPHA: Data is captured on the middle
        - USART LastBit: The clock pulse of the last data bit is not output to
                         the SCLK pin
  */
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
/* Configure the USART1 synchronous paramters */
USART_ClockInit(USART1, &USART_ClockInitStructure); 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 USART1 basic and asynchronous paramters */
USART_Init(USART1, &USART_InitStructure);
   
  /* Enable USART1 */
  USART_Cmd(USART1, ENABLE);
  } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void Nvic_Init(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
 
#ifdef  VECT_TAB_RAM 
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);  
#endif   /* Configure one bit for preemption priority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
 
  /* Enable the EXTI15_10 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure); }   //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void Uart1_PutChar(u16 ch)
{
   while (USART_GetITStatus(USART1,USART_IT_TXE)!=RESET);
   //USART1->DR = (Data & (uint16_t)0x01FF); 
  //while (*s != '') 
   USART_SendData(USART1, ch); } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void USART1_IRQHandler(void)
{       
    if(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) != RESET)
         { Uart1_PutChar(0x34);

          USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);
         }
        if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
     {  
      USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
       Uart1_PutChar(0x34);
     }
}   他就是不进中断为啥？ ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  此帖出自小平头技术问答