#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"

SoftwareSerial mySoftwareSerial(10, 11);
DFRobotDFPlayerMini myDFPlayer;

#define LED 6
#define TRIG 4
#define SOUND 7

boolean trigger = LOW;

void setup() {
  mySoftwareSerial.begin(9600);
  Serial.begin(9600);
  pinMode(TRIG, INPUT);
  pinMode(SOUND, OUTPUT);
  pinMode(LED, OUTPUT);
  
  if (!myDFPlayer.begin(mySoftwareSerial)) {
    Serial.println(F("Unable to begin:"));
    Serial.println(F("1.Please recheck the connection!"));
    Serial.println(F("2.Please insert the SD card!"));
    while(true){
      delay(0);
    }
  }
  
  myDFPlayer.volume(20);
}

void loop() {

  trigger = digitalRead(TRIG);


  if(!trigger) {
    
    myDFPlayer.play(1);

    for(int i=0; i<25; i++) {
      analogWrite(LED, i*10);
      delay(random(5, 50-i));
      analogWrite(LED, 0);
      delay(random(5, 50-i));
    }

    analogWrite(LED, 255);
    delay(5000);

  } else {
    digitalWrite(LED, LOW);
  }
}