mp3Player

#include <SoftwareSerial.h>
#define ARDUINO_RX 5                             // should connect to TX of the Serial MP3 Player module
#define ARDUINO_TX 6                             // connect to RX of the module
SoftwareSerial mySerial(ARDUINO_RX, ARDUINO_TX); // init the serial protocol, tell to myserial wich pins are TX and RX
static int8_t Send_buf[8] = {0}; // The MP3 player undestands orders in a 8 int string
                                 // 0X7E FF 06 command 00 00 00 EF;(if command =01 next song order)
#define CMD_PLAY_W_INDEX 0X03    // DATA IS REQUIRED (number of song)
#define CMD_SET_VOLUME 0X06      // DATA IS REQUIRED (number of volume from 0 up to 30(0x1E))
#define SET_DAC 0X17
#define CMD_PLAY_WITHVOLUME 0X22 // data is needed  0x7E 06 22 00 xx yy EF;(xx volume)(yy number of song)
#define CMD_SEL_DEV 0X09         // SELECT STORAGE DEVICE, DATA IS REQUIRED
#define DEV_TF 0X02              // HELLO,IM THE DATA REQUIRED
#define CMD_RESET 0X0C           // CHIP RESET
#define CMD_PLAY 0X0D            // RESUME PLAYBACK
#define CMD_PAUSE 0X0E           // PLAYBACK IS PAUSED
#define CMD_PLAY_WITHFOLDER 0X0F // DATA IS NEEDED, 0x7E 06 0F 00 01 02 EF;(play the song with the directory \01\002xxxxxx.mp3
#define PLAY_FOLDER 0X17         // data is needed 0x7E 06 17 00 01 XX EF;(play the 01 folder)(value xx we dont care)
#define SET_CYCLEPLAY 0X19       // data is needed 00 start; 01 close
#define SET_DAC 0X17             // data is needed 00 start DAC OUTPUT;01 DAC no output

void setup(){
  Serial.begin(9600);               // Start our Serial coms for serial monitor in our pc
  mySerial.begin(9600);             // Start our Serial coms for THE MP3
  delay(500);                       // Wait chip initialization is complete
  sendCommand(CMD_SEL_DEV, DEV_TF); // select the TF card
  delay(200);                       // wait for 200ms
}
void loop(){
  sendCommand(CMD_PLAY_WITHVOLUME, 0X0F01); // play the first song with volume 15 class
  delay(1000000);                           // the programm will send the play option each 100 seconds to the catalex chip
}

void sendCommand(int8_t command, int16_t dat){
  delay(20);
  Send_buf[0] = 0x7e;               // starting byte
  Send_buf[1] = 0xff;               // version
  Send_buf[2] = 0x06;               // the number of bytes of the command without starting byte and ending byte
  Send_buf[3] = command;            //
  Send_buf[4] = 0x00;               // 0x00 = no feedback, 0x01 = feedback
  Send_buf[5] = (int8_t)(dat >> 8); // datah
  Send_buf[6] = (int8_t)(dat);      // datal
  Send_buf[7] = 0xef;               // ending byte
  for (uint8_t i = 0; i < 8; i++){
    mySerial.write(Send_buf[i]);    // send bit to serial mp3
    Serial.print(Send_buf[i], HEX); // send bit to serial monitor in pc
  }
  Serial.println();
}