Arduino入门教程—基础实验篇七 串口通信实验

wqb123

#include <SPI.h>
int ppmin=2;
unsigned time=0;
unsigned bfb=0;
unsigned data=0;
void setup()
{
  Serial.begin(115200);
  pinMode(2,INPUT);
  attachInterrupt(ppmin, jiema, RISING);


  
}
void loop()
{
  interrupts();
  detachInterrupt(1);


}
void jiema()
{
  unsigned char val=0;
  time=pulseIn(2,HIGH);
  bfb=time/1000*1024;
  data=bfb/4;//256 8weijingdu
  Serial.println(data,DEC);
  val=val++;
  time=0;
  bfb=0;
  data=0;
  if(val>8)
{
    detachInterrupt(0);
    delay(400);
    detachInterrupt(1);
  }
}


我这个是利用上升沿来触发外部中断来解码PPM信号的并由串口发送的程序，有问题能帮忙看看嘛