#define LED1 7
#define LED2 8
#define PB_Switch 2
#define on 0
#define off 1
#define Blink_TIME 300
#define d_time 30
bool RUN_Flag = 0;
bool Last_RUN_Flag = 0;
bool PB_Status = 1;
bool PB_Last_status = 1;
//setup Function
void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(PB_Switch, INPUT);
  digitalWrite(LED1, off);  //turn off when startup.
  digitalWrite(LED2, off);
}
//end of setup
void loop() {
  check_First_Push();
  check_First_Release();
  check_Second_Push();
  check_Second_Release();

  if (RUN_Flag == 1) {
    blink_Led();

  } else {
    digitalWrite(LED1, off);  //turn off led.
    digitalWrite(LED2, off);
  }
}
// check push Button.
void check_First_Push() {
  PB_Status = digitalRead(PB_Switch);
  static unsigned long PB_Millis = millis();
  if ((PB_Status == 0) && (PB_Last_status == 1) && (Last_RUN_Flag == 0)) {
    if (millis() - PB_Millis > d_time) {
      RUN_Flag = 1;
      PB_Last_status = 0;
      digitalWrite(LED1, on);  //turn on when startup.
      PB_Millis = millis();
    }
  }
}
void check_First_Release() {
  PB_Status = digitalRead(PB_Switch);
  static unsigned long PB_Millis = millis();
  if ((PB_Status == 1) && (PB_Last_status == 0) && (RUN_Flag == 1)) {
    if (millis() - PB_Millis > d_time) {
      Last_RUN_Flag = 1;
      PB_Last_status = 1;
      PB_Millis = millis();
    }
  }
}
void check_Second_Push() {
  PB_Status = digitalRead(PB_Switch);
  static unsigned long PB_Millis = millis();
  if ((PB_Status == 0) && (PB_Last_status == 1) && (Last_RUN_Flag == 1)) {
    if (millis() - PB_Millis > d_time) {
      RUN_Flag = 0;
      PB_Last_status = 0;
      PB_Millis = millis();
    }
  }
}
void check_Second_Release() {
  PB_Status = digitalRead(PB_Switch);
  static unsigned long PB_Millis = millis();
  if ((PB_Status == 1) && (PB_Last_status == 0) && (RUN_Flag == 0)) {
    if (millis() - PB_Millis > d_time) {
      PB_Last_status = 1;
      Last_RUN_Flag = 0;
      PB_Millis = millis();
    }
  }
}
//End of check PB.
//led Blink
void blink_Led() {
  static unsigned long Led_Millis = millis();
  if (millis() - Led_Millis > Blink_TIME) {
    digitalWrite(LED1, !digitalRead(LED1));
    digitalWrite(LED2, !digitalRead(LED1));
    Led_Millis = millis();
  }
}
//End of LED Blink.