usart串口接收中断进不去

须佐之男

[mw_shl_code=c,true]void USART2_Init(void) { RCC_APB2ENR |= 0x00000020; //打开被重映射的端口时钟 RCC_APB1ENR |= 0x00020000; //打开串口2时钟 RCC_APB2ENR |= 0x00000001; //打开AFIO功能时钟 AFIO_MAPR |= 0x00000008; //进行重映射 USART2_CR1 = 0x00000000; USART2_CR1 |= 0x0000012c; //使能接收缓存器非空中断，使能接收、发送,使能PE USART2_CR2 = 0x00000000; USART2_CR3 = 0x00000000; USART2_BRR = 0x0000; USART2_BRR = 0x1d4c; //波特率9600 GPIOD_CRL &= 0xf00fffff; GPIOD_CRL |= 0x04b00000; //设置PD6浮空输入，PD5复用推挽输出 USART2_CR1 |= 0x2000; //使能USART2 MY_NVIC_Init(3,3,USART2_IRQChannel,2); //优先级设置 } void USART2_IRQHandler(void) { unsigned char temp; GPIOE_ODR |= 0x0020; //LED关闭; temp=USART2_DR; } 我从串口调试助手发了数据，但是LED没有熄掉，没有进入中断[/mw_shl_code]

正点原子

参考下我们的GPS模块/蓝牙模块/wifi模块的例程,里面用了串口2 的中断接收.