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• Arduino code

  davedarko • 05/19/2018 at 07:12 • 0 comments

  /***************************************************
  DFPlayer - A Mini MP3 Player For Arduino
   <https://www.dfrobot.com/index.php?route=product/product&search=mp3&description=true&product_id=1121>
   
   ***************************************************
   This example shows the basic function of library for DFPlayer.
   
   Created 2014-8-28
   By [Angelo qiao](Angelo.qiao@dfrobot.com)
   
   GNU Lesser General Public License.
   See <http://www.gnu.org/licenses/> for details.
   All above must be included in any redistribution
   ****************************************************/
  
  /***********Notice and Trouble shooting***************
   1.Connection and Diagram can be found here
   <>
   2.This code is tested on Arduino Uno, Leonardo, Mega boards.
   ****************************************************/
  
  #include "Arduino.h"
  #include "SoftwareSerial.h"
  #include "DFRobotDFPlayerMini.h"
  // rx 3
  
  #include <avr/sleep.h>
  #define BODS 7                     //BOD Sleep bit in MCUCR
  #define BODSE 2                    //BOD Sleep enable bit in MCUCR
  
  #define RX    3   // *** D3, Pin 2
  #define TX    4   // *** D4, Pin 3
  
  SoftwareSerial softSerial(RX, TX); // RX, TX
  DFRobotDFPlayerMini myDFPlayer;
  void printDetail(uint8_t type, int value);
  
  void setup()
  {
    softSerial.begin(9600);
   
    
    if (!myDFPlayer.begin(softSerial)) {  //Use softwareSerial to communicate with mp3.
      
    }
    myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);
    myDFPlayer.enableDAC();
    delay(200);
    myDFPlayer.volume(30);  //Set volume value. From 0 to 30
    myDFPlayer.play(1);  //Play the first mp3
  }
  
  void loop()
  {
    if (myDFPlayer.available()) {
      uint8_t type = myDFPlayer.readType();
      if (type == DFPlayerPlayFinished)
      {
        // sleep();
        // myDFPlayer.play(1);
        myDFPlayer.disableDAC();
        myDFPlayer.sleep();
        mcu_sleep();
      }
    }
  }
  
  void mcu_sleep()
  {
    byte  mcucr1, mcucr2;
  
    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
    sleep_enable();
    MCUCR &= ~(_BV(ISC01) | _BV(ISC00));      //INT0 on low level
    ADCSRA &= ~_BV(ADEN);                     //disable ADC
    cli();                                    //stop interrupts to ensure the BOD timed sequence executes as required
    mcucr1 = MCUCR | _BV(BODS) | _BV(BODSE);  //turn off the brown-out detector
    mcucr2 = mcucr1 & ~_BV(BODSE);            //if the MCU does not have BOD disable capability,
    MCUCR = mcucr1;                           //  this code has no effect
    MCUCR = mcucr2;
    sleep_cpu();
  }

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