标题:
M3的热释电中断怎么进入?
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作者:
qbei
时间:
2019-12-30 17:08
标题:
M3的热释电中断怎么进入?
热释电和按键的外部中断设置有什么不同吗?
我按按键的中断设置来设置,就是不能进入热释电的中断。。。
代码如下
int main()
{
led_fwInit();
key_fwInit();
red_init();
usart_Init(9600);
Delay_IRQn(1000);
while(1)
{
}
}
void red_init(void)
{
RCC->APB2ENR |=1<<3|1<<0;
GPIOB->CRL &=~(0XF<<(5*4));
GPIOB->CRL |=4<<(5*4);
AFIO->EXTICR[1] &=~(0XF<<(5*4);
AFIO->EXTICR[1] |=0X01<(5*4);
EXTI->FTSR |=1<<5;
EXTI->IMR |=1<<5;
SCB->AIRCR = 0X05FA0500;
NVIC->IP[23] = 0X00;
NVIC->ISER[0] |=1<<23;
}
void EXTI9_5_IRQHandler(void)
{
if(EXTI->PR & 1<<5)
{
EXTI->PR |=1<<5;
printf("有人\r\n");
beep_bb();
}
}
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