这几天一直在搞毕设，需要通过串口用电脑控制单片机，用的是usart1，调了好几天，死活就是只能发送数据，不能接受数据，下面是我的配置函数和串口中断处理函数，求指导！！！
//串口引脚初始化
void Init_Usart(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
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);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
//串口配置函数
void Usart_Configuration(uint32_t BaudRate)
{
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
USART_InitStructure.USART_BaudRate =BaudRate ;
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(USART1, &USART_InitStructure);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_Cmd(USART1, ENABLE);
}
//串口中断处理函数
void USART1_IRQHandler(void)
{
uint8_t ReceiveDate;
if(!(USART_GetITStatus(USART1,USART_IT_RXNE)))
{
USART_ClearITPendingBit(USART1,USART_IT_RXNE);
ReceiveDate=USART_ReceiveData(USART1);
printf("%d",(char *)ReceiveDate);
printf("\n\r");
}
}
//串口中断NVIC配置函数
void Init_NVIC(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
}
调了好几天了，实在是高不出来了，求大神指导！！！！！！！跪谢！！
