/* 创建硬件定时器 */
hw_timer_t * timer = NULL;
int angle=0;
int deltaR=1;
int servo1[12] = {2,3,4,5,6,7,8,9,10,11,12,13};
/* LED 引脚 */
int led = 18;
/* LED 状态 */
volatile byte state = LOW;
bool shouldMove=true;
 
void IRAM_ATTR onTimer(){
  if(!shouldMove)
    return;
  for(int i=0;i<12;i++)
  {
    digitalWrite(servo1[i], HIGH);
  }
  
  motorLow();
}
 
void setup() {
  Serial.begin(115200);
   for(int i=0;i<12;i++)
  {
    pinMode(servo1[i], OUTPUT);
  }
  
  /*  1/(80MHZ/80) = 1us  */
  timer = timerBegin(0, 80, true);
  /* 将onTimer函数附加到我们的计时器 */
  timerAttachInterrupt(timer, &onTimer, true);
  /* *设置闹钟每秒调用onTimer函数1 tick为1us   => 1秒为1000000us * / 
  / *重复闹钟（第三个参数）*/
  timerAlarmWrite(timer, 20000, true);
  /* 启动警报*/
  timerAlarmEnable(timer);
  Serial.println("start timer");
  
}
 void motorLow()
 {
  delayMicroseconds((angle * 11) + 500);
    for(int i=0;i<12;i++)
  {
    digitalWrite(servo1[i], LOW);
  }
 }
void loop() {

      if(angle>=150)
    {
      deltaR=-1;
    }
    if(angle<=10)
    {
      deltaR=1;
    }
    angle+=deltaR;
    delay(10);
    Serial.println(millis());
}