Hi,
I'm so new with Arduino, but I have a problem that I can't solve…
I built the adruino uno / DFPlayer mini from Arduino MP3 player project.
Everything works perfectly! Only I still have a few questions.
I would like that if I press next or previous button not to start playing the song right away.But select a song, then when I press play / pause it should play the selected song. I hope it is something with the code?
My biggest wish is to connect a 1Digit (5161BS). Where you can see which number you select with Next or Previous… could anyone help me with that? I only now use this code:
/// MP3 PLAYER PROJECT
/// http://educ8s.tv/arduino-mp3-player/
//////////////////////////////////////////
#include "SoftwareSerial.h"
#include "SoftwareSerial.h"
#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"
SoftwareSerial mySerial(10, 11);
# define Start_Byte 0x7E
# define Version_Byte 0xFF
# define Command_Length 0x06
# define End_Byte 0xEF
# define Acknowledge 0x00 //Returns info with command 0x41 [0x01: info, 0x00: no info]
# define ACTIVATED LOW
int buttonNext = 2;
int buttonPause = 3;
int buttonPrevious = 4;
boolean isPlaying = false;
void setup () {
pinMode(buttonPause, INPUT);
digitalWrite(buttonPause, HIGH);
pinMode(buttonNext, INPUT);
digitalWrite(buttonNext, HIGH);
pinMode(buttonPrevious, INPUT);
digitalWrite(buttonPrevious, HIGH);
mySerial.begin (9600);
delay(1000);
playFirst();
isPlaying = true;
}
void loop () {
if (digitalRead(buttonPause) == ACTIVATED)
{
if (isPlaying)
{
pause();
isPlaying = false;
} else
{
isPlaying = true;
play();
}
}
if (digitalRead(buttonNext) == ACTIVATED)
{
if (isPlaying)
{
playNext();
}
}
if (digitalRead(buttonPrevious) == ACTIVATED)
{
if (isPlaying)
{
playPrevious();
}
}
}
void playFirst()
{
execute_CMD(0x3F, 0, 0);
delay(500);
setVolume(20);
delay(500);
execute_CMD(0x11, 0, 1);
delay(500);
}
void pause()
{
execute_CMD(0x0E, 0, 0);
delay(500);
}
void play()
{
execute_CMD(0x0D, 0, 1);
delay(500);
}
void playNext()
{
execute_CMD(0x01, 0, 1);
delay(500);
}
void playPrevious()
{
execute_CMD(0x02, 0, 1);
delay(500);
}
void setVolume(int volume)
{
execute_CMD(0x06, 0, volume); // Set the volume (0x00~0x30)
delay(2000);
}
void execute_CMD(byte CMD, byte Par1, byte Par2)
// Excecute the command and parameters
{
// Calculate the checksum (2 bytes)
word checksum = -(Version_Byte + Command_Length + CMD + Acknowledge + Par1 + Par2);
// Build the command line
byte Command_line[10] = { Start_Byte, Version_Byte, Command_Length, CMD, Acknowledge,
Par1, Par2, highByte(checksum), lowByte(checksum), End_Byte
};
//Send the command line to the module
for (byte k = 0; k < 10; k++)
{
mySerial.write( Command_line[k]);
}
}
