MP3 Music Player UART Control Serial Module In Pakistan

Features:

1. Support sampling frequency (kHz): 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48
2. Support file format: MP3 / WAV
3. Support Micro SD card, Micro SDHC Card
4. 30 class adjustable volume
5. UART TTL serial control playback mode, the baud rate is 9600bps
6. The power supply can be 3.2 ~ 5.2VDC

Instructions/ helpful Code:

Save mp3 files in sd card and here is the test code

send + to Arduino from the serial terminal of Arduino for the next song and – for the previous song.

// 11-25-16 test code for mp3 module

#include

SoftwareSerial mp3 ( 5 , 6 ) ;//5=rx , 6=tx

static uint8_t cmdbuf[8] = {0};

char serial_byte=0;

char song_no=1;

void command(int8_t cmd, int16_t dat)

{

delay(20);

cmdbuf [ 0 ] = 0x7e ; // byte start

cmdbuf [ 1 ] = 0xFF ; // Version

cmdbuf [ 2 ] = 0x06 ; // number of bytes command

cmdbuf [ 3 ] = cmd ; // command

cmdbuf[4] = 0x00; // 0x00 = no feedback, 0x01 = feedback

cmdbuf [ 5 ] = ( int8_t ) ( dat >> 8 ) ; // PARAMETR DAT1

cmdbuf [ 6 ] = ( int8_t ) ( dat ) ; // PARAMETR DAT2

cmdbuf [ 7 ] = 0xef ; // Bajt konczacy

for (uint8_t i = 0; i < 8; i++)

{

mp3.write(cmdbuf[i]);

}

}

void setup()

{

Serial.begin(9600);

mp3.begin(9600);

delay ( 500 ) ; // We look forward to 500ms initialization

command ( 0x09 , 0x0002 ) ; // Select SD card as a source

delay ( 200 ) ; // Czekamu 200ms for initialization

command ( 0x06 , 0x0064 ) ; // Set the volume to 30

command ( 0x03 , song_no );

}

void loop() {

if(serial_byte==’+’)

{if(song_no<11) {serial_byte=0;song_no++;command ( 0x03 , song_no );}}

else if (serial_byte==’-‘)

{if(song_no>1) {serial_byte=0;song_no–;command ( 0x03 , song_no );}}

}

void serialEvent() {

if (Serial.available()) {

serial_byte = (char)Serial.read();

if (Serial.available())

char i= Serial.read();

}

}

Package includes:

• 1x MP3 Music Player UART Control Serial Module In Pakistan