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March 14, 2023 01:33
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Arduino mp3 demo
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/***********************************************************/ | |
// Demo for the Serial MP3 Player Catalex (YX5300 chip) | |
// Hardware: Serial MP3 Player *1 | |
// Board: Arduino UNO | |
// http://www.dx.com/p/uart-control-serial-mp3-music-player-module-for-arduino-avr-arm-pic-blue-silver-342439#.VfHyobPh5z0 | |
// | |
// Uncomment SoftwareSerial for Arduino Uno or Nano. | |
#include <SoftwareSerial.h> | |
#define ARDUINO_RX 10 //should connect toLesson plan TX of the Serial MP3 Player module | |
#define ARDUINO_TX 11 //connect to RX of the module | |
SoftwareSerial mp3(ARDUINO_RX, ARDUINO_TX); | |
// Uncomment next line if you are using an Arduino Mega. | |
static int8_t Send_buf[8] = {0}; // Buffer for Send commands. // BETTER LOCALLY | |
static uint8_t ansbuf[10] = {0}; // Buffer for the answers. // BETTER LOCALLY | |
String mp3Answer; // Answer from the MP3. | |
String sanswer(void); | |
String sbyte2hex(uint8_t b); | |
/************ Command byte **************************/ | |
#define CMD_NEXT_SONG 0X01 // Play next song. | |
#define CMD_PREV_SONG 0X02 // Play previous song. | |
#define CMD_PLAY_W_INDEX 0X03 | |
#define CMD_VOLUME_UP 0X04 | |
#define CMD_VOLUME_DOWN 0X05 | |
#define CMD_SET_VOLUME 0X06 | |
#define CMD_SNG_CYCL_PLAY 0X08 // Single Cycle Play. | |
#define CMD_SEL_DEV 0X09 | |
#define CMD_SLEEP_MODE 0X0A | |
#define CMD_WAKE_UP 0X0B | |
#define CMD_RESET 0X0C | |
#define CMD_PLAY 0X0D | |
#define CMD_PAUSE 0X0E | |
#define CMD_PLAY_FOLDER_FILE 0X0F | |
#define CMD_STOP_PLAY 0X16 // Stop playing continuously. | |
#define CMD_FOLDER_CYCLE 0X17 | |
#define CMD_SHUFFLE_PLAY 0x18 // | |
#define CMD_SET_SNGL_CYCL 0X19 // Set single cycle. | |
#define CMD_SET_DAC 0X1A | |
#define DAC_ON 0X00 | |
#define DAC_OFF 0X01 | |
#define CMD_PLAY_W_VOL 0X22 | |
#define CMD_PLAYING_N 0x4C | |
#define CMD_QUERY_STATUS 0x42 | |
#define CMD_QUERY_VOLUME 0x43 | |
#define CMD_QUERY_FLDR_TRACKS 0x4e | |
#define CMD_QUERY_TOT_TRACKS 0x48 | |
#define CMD_QUERY_FLDR_COUNT 0x4f | |
/************ Opitons **************************/ | |
#define DEV_TF 0X02 | |
/*********************************************************************/ | |
void setup() | |
{ | |
Serial.begin(9600); | |
mp3.begin(9600); | |
//sendCommand(CMD_STOP_PLAY); | |
} | |
void loop() | |
{ | |
// start an interactive serial console (check the Arduino IDE Serial Monitor and enter "?" for help) | |
mp3_cli(); | |
// or play a specific file (the last number should match the start of the filename) | |
//sendCommand(CMD_PLAY_W_INDEX, 0, 2); | |
//delay(5000); | |
} | |
void mp3_cli() | |
{ | |
char c = ' '; | |
// If there a char on Serial call sendMP3Command to sendCommand | |
if ( Serial.available() ) | |
{ | |
c = Serial.read(); | |
sendMP3Command(c); | |
} | |
// Check for the answer. | |
if (mp3.available()) | |
{ | |
Serial.println(decodeMP3Answer()); | |
} | |
delay(100); | |
} | |
/********************************************************************************/ | |
/*Function sendMP3Command: seek for a 'c' command and send it to MP3 */ | |
/*Parameter: c. Code for the MP3 Command, 'h' for help. */ | |
/*Return: void */ | |
void sendMP3Command(char c) { | |
int index; | |
switch (c) { | |
case '?': | |
case 'h': | |
Serial.println("HELP "); | |
Serial.println(" p = Play"); | |
Serial.println(" P = Pause"); | |
Serial.println(" > = Next"); | |
Serial.println(" < = Previous"); | |
Serial.println(" s = Stop Play"); | |
Serial.println(" + = Volume UP"); | |
Serial.println(" - = Volume DOWN"); | |
Serial.println(" c = Query current file"); | |
Serial.println(" q = Query status"); | |
Serial.println(" v = Query volume"); | |
Serial.println(" x = Query folder count"); | |
Serial.println(" t = Query total file count"); | |
Serial.println(" f = Play folder 1."); | |
Serial.println(" S = Sleep"); | |
Serial.println(" W = Wake up"); | |
Serial.println(" r = Reset"); | |
Serial.println(" z = MAXVol"); | |
Serial.println(" a = Shuffle"); | |
break; | |
case 'p': | |
Serial.println("Play "); | |
sendCommand(CMD_PLAY); | |
break; | |
case 'a': | |
Serial.println("Shuffle"); | |
sendCommand(CMD_SHUFFLE_PLAY); | |
break; | |
case 'P': | |
Serial.println("Pause"); | |
sendCommand(CMD_PAUSE); | |
break; | |
case '>': | |
Serial.println("Next"); | |
sendCommand(CMD_NEXT_SONG); | |
sendCommand(CMD_PLAYING_N); // ask for the number of file is playing | |
break; | |
case '<': | |
Serial.println("Previous"); | |
sendCommand(CMD_PREV_SONG); | |
sendCommand(CMD_PLAYING_N); // ask for the number of file is playing | |
break; | |
case 's': | |
Serial.println("Stop Play"); | |
sendCommand(CMD_STOP_PLAY); | |
break; | |
case '+': | |
Serial.println("Volume Up"); | |
sendCommand(CMD_VOLUME_UP); | |
break; | |
case '-': | |
Serial.println("Volume Down"); | |
sendCommand(CMD_VOLUME_DOWN); | |
break; | |
case 'c': | |
Serial.println("Query current file"); | |
sendCommand(CMD_PLAYING_N); | |
break; | |
case 'q': | |
Serial.println("Query status"); | |
sendCommand(CMD_QUERY_STATUS); | |
break; | |
case 'v': | |
Serial.println("Query volume"); | |
sendCommand(CMD_QUERY_VOLUME); | |
break; | |
case 'x': | |
Serial.println("Query folder count"); | |
sendCommand(CMD_QUERY_FLDR_COUNT); | |
break; | |
case 't': | |
Serial.println("Query total file count"); | |
sendCommand(CMD_QUERY_TOT_TRACKS); | |
break; | |
case 'f': | |
Serial.println("Playing folder 1"); | |
sendCommand(CMD_FOLDER_CYCLE, 1, 0); | |
break; | |
case 'S': | |
Serial.println("Sleep"); | |
sendCommand(CMD_SLEEP_MODE); | |
break; | |
case 'W': | |
Serial.println("Wake up"); | |
sendCommand(CMD_WAKE_UP); | |
break; | |
case 'r': | |
Serial.println("Reset"); | |
sendCommand(CMD_RESET); | |
break; | |
case 'n': | |
Serial.println("Play Index:"); | |
index = Serial.read(); | |
sendCommand(CMD_PLAY_W_INDEX, 0, index-48); | |
break; | |
case 'z': | |
Serial.println("MaxVol"); | |
sendCommand(CMD_PLAY_W_VOL); | |
break; | |
} | |
} | |
/********************************************************************************/ | |
/*Function decodeMP3Answer: Decode MP3 answer. */ | |
/*Parameter:-void */ | |
/*Return: The */ | |
String decodeMP3Answer() { | |
String decodedMP3Answer = ""; | |
decodedMP3Answer += sanswer(); | |
switch (ansbuf[3]) { | |
case 0x3A: | |
decodedMP3Answer += " -> Memory card inserted."; | |
break; | |
case 0x3D: | |
decodedMP3Answer += " -> Completed play num " + String(ansbuf[6], DEC); | |
break; | |
case 0x40: | |
decodedMP3Answer += " -> Error"; | |
break; | |
case 0x41: | |
decodedMP3Answer += " -> Data recived correctly. "; | |
break; | |
case 0x42: | |
decodedMP3Answer += " -> Status playing: " + String(ansbuf[6], DEC); | |
break; | |
case 0x48: | |
decodedMP3Answer += " -> File count: " + String(ansbuf[6], DEC); | |
break; | |
case 0x4C: | |
decodedMP3Answer += " -> Playing: " + String(ansbuf[6], DEC); | |
break; | |
case 0x4E: | |
decodedMP3Answer += " -> Folder file count: " + String(ansbuf[6], DEC); | |
break; | |
case 0x4F: | |
decodedMP3Answer += " -> Folder count: " + String(ansbuf[6], DEC); | |
break; | |
} | |
return decodedMP3Answer; | |
} | |
/********************************************************************************/ | |
/*Function: Send command to the MP3 */ | |
/*Parameter: byte command */ | |
/*Parameter: byte dat1 parameter for the command */ | |
/*Parameter: byte dat2 parameter for the command */ | |
void sendCommand(byte command){ | |
sendCommand(command, 0, 0); | |
} | |
void sendCommand(byte command, byte dat1, byte dat2){ | |
delay(20); | |
Send_buf[0] = 0x7E; // | |
Send_buf[1] = 0xFF; // | |
Send_buf[2] = 0x06; // Len | |
Send_buf[3] = command; // | |
Send_buf[4] = 0x01; // 0x00 NO, 0x01 feedback | |
Send_buf[5] = dat1; // datah | |
Send_buf[6] = dat2; // datal | |
Send_buf[7] = 0xEF; // | |
Serial.print("Sending: "); | |
for (uint8_t i = 0; i < 8; i++) | |
{ | |
mp3.write(Send_buf[i]) ; | |
Serial.print(sbyte2hex(Send_buf[i])); | |
} | |
Serial.println(); | |
} | |
/********************************************************************************/ | |
/*Function: sbyte2hex. Returns a byte data in HEX format. */ | |
/*Parameter:- uint8_t b. Byte to convert to HEX. */ | |
/*Return: String */ | |
String sbyte2hex(uint8_t b) | |
{ | |
String shex; | |
shex = "0X"; | |
if (b < 16) shex += "0"; | |
shex += String(b, HEX); | |
shex += " "; | |
return shex; | |
} | |
/********************************************************************************/ | |
/*Function: shex2int. Returns a int from an HEX string. */ | |
/*Parameter: s. char *s to convert to HEX. */ | |
/*Parameter: n. char *s' length. */ | |
/*Return: int */ | |
int shex2int(char *s, int n){ | |
int r = 0; | |
for (int i=0; i<n; i++){ | |
if(s[i]>='0' && s[i]<='9'){ | |
r *= 16; | |
r +=s[i]-'0'; | |
}else if(s[i]>='A' && s[i]<='F'){ | |
r *= 16; | |
r += (s[i] - 'A') + 10; | |
} | |
} | |
return r; | |
} | |
/********************************************************************************/ | |
/*Function: sanswer. Returns a String answer from mp3 UART module. */ | |
/*Parameter:- uint8_t b. void. */ | |
/*Return: String. If the answer is well formated answer. */ | |
String sanswer(void) | |
{ | |
uint8_t i = 0; | |
String mp3answer = ""; | |
// Get only 10 Bytes | |
while (mp3.available() && (i < 10)) | |
{ | |
uint8_t b = mp3.read(); | |
ansbuf[i] = b; | |
i++; | |
mp3answer += sbyte2hex(b); | |
} | |
// if the answer format is correct. | |
if ((ansbuf[0] == 0x7E) && (ansbuf[9] == 0xEF)) | |
{ | |
return mp3answer; | |
} | |
return "???: " + mp3answer; | |
} |
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