• 2022-06-10
    设置串口1中断UART1中断的抢占优先级为3,响应优先级为0;外部中断EXTI1的抢占优先级为3,响应优先级为1;定时器3TIM3的抢占优先级为1,响应优先级为0;当以上三个中断同时发生时,优先级先后顺序为()
    A: EXTI1,UART1,TIM3
    B: TIM3,UART1,EXTI1
    C: EXTI1,TIM3,UART1
    D: TIM3,EXTI1,UART1
  • 举一反三