#include <TM1637.h>

#define pirPin 6
#define relayPin 3

int sw = 0;
unsigned long time_x;

const int CLK = 2;
const int DIO = 4;
TM1637 tm(CLK, DIO);

void setup() {
  // Serial.begin(9600);
  pinMode(pirPin, INPUT);
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW);

  tm.init();
  tm.set(7);
}

void loop() {
  if (sw == 0) {
    if (digitalRead(pirPin) == HIGH) {
      sw = 1;
      time_x = millis();
      digitalWrite(relayPin, HIGH);
    }
  } else {
    if ((millis() - time_x) > 10000) {
      if (digitalRead(pirPin) == HIGH) {
        time_x = millis();
      } else {
        digitalWrite(relayPin, LOW);
        sw = 0;
      }
    }
    // else {
    //   f1(9-(millis()-time_x)/1000);
    // }
  }
}

void f1(int n) {
  tm.display(0, 0);
  tm.display(1, 0);
  tm.display(2, 0);
  tm.display(3, n);
}