Grove - Serial MP3 Player ------------------------- ![enter image description here][1] Grove-Serial MP3 Player is a kind of simple MP3 player device whose design is based on a high-quality MP3 audio chip---WT5001. It can support 8KHZ~44.1KHZ sampling frequency MP3 and WAV file formats. This product has several peripheral ports: a standard UART Grove interface, a dual track headphone jack, an external interface and also a micro SD card interface. You can control the MP3 playback state by sending commands to module via serial port tools, such as switch songs, change the volume and play mode and so on. It seems a simple module, but it owns such strong function. Want to know how the sound quality? Please come to experience it! Features Standard Grove interface Asynchronous serial port control play mode Busy Indicator Reset Button Standard micro SD card Interface Support FAT16 and FAT32 file system For more detail, please visit: http://www.seeedstudio.com/item_detail.html?p_id=1542 /*****************************************************************************/ // Function: control the seeedstudio Grove MP3 player // Hardware: Grove - Serial MP3 Player /*******************************************************************************/ #include SoftwareSerial mp3(2, 3);//modify this with the connector you are using. void setup() { mp3.begin(9600); Serial.begin(9600); delay(100); if (true ==SetPlayMode(0x01)) Serial.println("Set The Play Mode to 0x01, Single Loop Mode."); else Serial.println("Playmode Set Error"); PauseOnOffCurrentMusic(); } void loop() { SetPlayMode(0x01); delay(1000); SetMusicPlay(00,01); delay(1000); SetVolume(0x0E); while(1); } //Set the music index to play, the index is decided by the input sequence //of the music; //hbyte: the high byte of the index; //lbyte: the low byte of the index; boolean SetMusicPlay(uint8_t hbyte,uint8_t lbyte) { mp3.write(0x7E); mp3.write(0x04); mp3.write(0xA0); mp3.write(hbyte); mp3.write(lbyte); mp3.write(0x7E); delay(10); while(mp3.available()) { if (0xA0==mp3.read()) return true; else return false; } } // Pause on/off the current music boolean PauseOnOffCurrentMusic(void) { mp3.write(0x7E); mp3.write(0x02); mp3.write(0xA3); mp3.write(0x7E); delay(10); while(mp3.available()) { if (0xA3==mp3.read()) return true; else return false; } } //Set the volume, the range is 0x00 to 0x1F boolean SetVolume(uint8_t volume) { mp3.write(0x7E); mp3.write(0x03); mp3.write(0xA7); mp3.write(volume); mp3.write(0x7E); delay(10); while(mp3.available()) { if (0xA7==mp3.read()) return true; else return false; } } boolean SetPlayMode(uint8_t playmode) { if (((playmode==0x00)|(playmode==0x01)|(playmode==0x02)|(playmode==0x03))==false) { Serial.println("PlayMode Parameter Error! "); return false; } mp3.write(0x7E); mp3.write(0x03); mp3.write(0xA9); mp3.write(playmode); mp3.write(0x7E); delay(10); while(mp3.available()) { if (0xA9==mp3.read()) return true; else return false; } } [1]: /editor/20160115/5698e6ebd829b.png