1.首先配置串口1管脚
/* 配置串口1引脚 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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);
2.下面的代码设置并使能串口1中断,这个应该放在有一个函数中,然后再main中启用该函数
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
3.写一个串口1的中断ISR
void USART1_IRQHandler(void)
{
if(USART_GetITStatus(USART1,USART_IT_RXNE)==SET)
{
USART_ClearITPendingBit(USART1,USART_IT_RXNE);
get_data=USART_ReceiveData(USART1);
//这里可以定义一个buffer缓冲,全局的。
}
if(USART_GetFlagStatus(USART1,USART_FLAG_ORE)==SET)
{
USART_ClearFlag(USART1,USART_FLAG_ORE);
USART_ReceiveData(USART1);
}
}
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