The reference:
web address: https://wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299
by DFRobot
We consider the mp3 player factory's official document and using it to drive the player in the right way. We, however, change part of the original code for better support and checking the state of player for checking the error.
Especially, we solved a significant problem of decrease the noise of the sound output, via the support of a web mate.
#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"
SoftwareSerial mySoftwareSerial(10, 11); // RX, TX
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);
void setup()
{
mySoftwareSerial.begin(9600);
Serial.begin(115200);
Serial.println();
Serial.println(F("DFRobot DFPlayer Mini Demo"));
Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3.
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);
}
Serial.println(F("DFPlayer Mini online."));
myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms
//----Set device we use SD as default----
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_U_DISK);
myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_AUX);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_SLEEP);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_FLASH);
//----Mp3 control----
// myDFPlayer.sleep(); //sleep
// myDFPlayer.reset(); //Reset the module
// myDFPlayer.enableDAC(); //Enable On-chip DAC
// myDFPlayer.disableDAC(); //Disable On-chip DAC
// myDFPlayer.outputSetting(true, 15); //output setting, enable the output and set the gain to 15
//----Mp3 play----
myDFPlayer.next(); //Play next mp3
delay(1000);
myDFPlayer.previous(); //Play previous mp3
delay(1000);
myDFPlayer.play(1); //Play the first mp3
delay(1000);
myDFPlayer.loop(1); //Loop the first mp3
delay(1000);
myDFPlayer.pause(); //pause the mp3
delay(1000);
myDFPlayer.start(); //start the mp3 from the pause
delay(1000);
myDFPlayer.playFolder(15, 4); //play specific mp3 in SD:/15/004.mp3; Folder Name(1~99); File Name(1~255)
delay(1000);
myDFPlayer.enableLoopAll(); //loop all mp3 files.
delay(1000);
myDFPlayer.disableLoopAll(); //stop loop all mp3 files.
delay(1000);
myDFPlayer.playMp3Folder(4); //play specific mp3 in SD:/MP3/0004.mp3; File Name(0~65535)
delay(1000);
myDFPlayer.advertise(3); //advertise specific mp3 in SD:/ADVERT/0003.mp3; File Name(0~65535)
delay(1000);
myDFPlayer.stopAdvertise(); //stop advertise
delay(1000);
myDFPlayer.playLargeFolder(2, 999); //play specific mp3 in SD:/02/004.mp3; Folder Name(1~10); File Name(1~1000)
delay(1000);
myDFPlayer.loopFolder(5); //loop all mp3 files in folder SD:/05.
delay(1000);
myDFPlayer.randomAll(); //Random play all the mp3.
delay(1000);
myDFPlayer.enableLoop(); //enable loop.
delay(1000);
myDFPlayer.disableLoop(); //disable loop.
delay(1000);
Solving the player mini mp3 noise
Our OWN type:
if (digitalRead(Button)==LOW) { delay(10); if (mp3.available()) { printDetail(mp3.readType(), mp3.read()); //Print the detail message from DFPlayer to handle different errors and states. } } else if (digitalRead(Button)==HIGH) { delay(10); if ( ds18b20.getTempC() >= 32 ) { for (int index = 0; index < 1; index++) { //music play mp3.play(2); if (mp3.available()) { printDetail(mp3.readType(), mp3.read()); //Print the detail message from DFPlayer to handle different errors and states. } } for (int index = 0; index < 1; index++) {
mp3.pause(); if (mp3.available()) { printDetail(mp3.readType(), mp3.read()); //Print the detail message from DFPlayer to handle different errors and states. } while (!(32>ds18b20.getTempC())) {} }//redLED
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