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IMU-controlled mp3 player
Dependencies: 4DGL-uLCD-SE MMA8452 PinDetect SDFileSystem mbed wave_player
main.cpp
- Committer:
- kthlee
- Date:
- 2016-05-02
- Revision:
- 0:b051af62369a
File content as of revision 0:b051af62369a:
#include "mbed.h" #include "MMA8452.h" #include "uLCD_4DGL.h" #include "SDFileSystem.h" #include "wave_player.h" #include "PinDetect.h" #include <vector> #include <string> #include <algorithm> Serial pc(USBTX, USBRX); SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card DI, DO, SCK, CS uLCD_4DGL uLCD(p9, p10, p11); // create a global uLCD object rx, tx, reset MMA8452 acc(p28, p27, 100000); // SDA, SCL, rate AnalogOut DACout(p18); PwmOut PWMout(p21); wave_player waver(&DACout,&PWMout); PinDetect pb1(p30); enum modes_t {MainMenu, ListArtists, ListSongs, ListSongsByArtist, PlaySong, PauseSong}; modes_t Mode; volatile unsigned short currentPointer = 0; char filePath[] = "/sd/myMusic/"; char location; vector<string> filenames; vector<string> artistNames; vector<string> songNames; vector<string> playList; FILE *wave_file; string artistChosen = ""; string songChosen = ""; int x_value, y_value, z_value; bool playing = true; float volume = 0.5f; float volume_change = 1; void VolumeUp() { volume_change += 0.05; if (volume_change >= 1.5) { volume_change = 2; } } void VolumeDown() { volume_change -= 0.05; if (volume_change <= 0.0) { volume_change = 0.0; } } void pb1_hit_callback() { if (Mode == PauseSong) { Mode = MainMenu; } else { playing = !playing; } } void playSong(string filename) //play a song of given filename { wave_file = fopen(filename.c_str(),"r"); waver.play(wave_file); fclose(wave_file); } int aa = 0; void read_file_names(char *dir) { DIR *dp; struct dirent *dirp; dp = opendir(dir); filenames.clear(); while((dirp = readdir(dp)) != NULL) { filenames.push_back(string(dirp->d_name)); } } void printArtists(vector<string> inputList) { uLCD.cls(); uLCD.locate(0,0); uLCD.printf("LIST OF ARTISTS:"); for (int x = 0; x < inputList.size();x++) { size_t index = inputList[x].find("-"); uLCD.locate(2,x+3); uLCD.printf(inputList[x].substr(0,index).c_str()); } uLCD.locate(0,currentPointer+3); uLCD.printf("->"); } void printSongs(vector<string> inputList) { uLCD.cls(); uLCD.locate(0,0); uLCD.printf("LIST OF SONGS:"); for (int x = 0; x < inputList.size();x++) { size_t index = inputList[x].find("-"); uLCD.locate(2,x+3); uLCD.printf(inputList[x].substr(index+2,inputList[x].length()).c_str()); } uLCD.locate(0,currentPointer+3); uLCD.printf("->"); } vector<string> getArtistList(vector<string> filenames) { vector<string> returnList; bool mark = false; for (int i = 0; i < filenames.size(); i++) { size_t index = filenames[i].find("-"); for (int j = i + 1; j < filenames.size(); j++) { if (filenames[i].substr(0,index).compare(filenames[j].substr(0,index)) == 0) { mark = true; } } if (mark == false) { returnList.push_back(filenames[i]); } mark = false; } return returnList; } vector<string> getSongList(vector<string> filenames) { vector<string> returnList; for (int i = 0; i < filenames.size(); i++) { size_t index = filenames[i].find("-"); returnList.push_back(filenames[i]); } return returnList; } vector<string> getSongsByArtistList(vector<string> filenames, string artistName) { vector<string> returnList; for (int i = 0; i < filenames.size(); i++) { size_t index = filenames[i].find("-"); if (filenames[i].find(artistName) != string::npos) { returnList.push_back(filenames[i]); } } return returnList; } int main() { pb1.mode(PullUp); pb1.attach_deasserted(&pb1_hit_callback); pb1.setSampleFrequency(); Mode = MainMenu; acc.activate(); PWMout.period(1.0/400000.0); while (1) { if (Mode == MainMenu) { uLCD.cls(); uLCD.locate(0,0); uLCD.printf("Please Choose:"); uLCD.locate(0,7); uLCD.printf("Artists"); uLCD.locate(12,7); uLCD.printf("Songs"); while (x_value < 700 && x_value > -700) { acc.readXCount(&x_value); if (x_value > 700) { Mode = ListArtists; //+X for artists } if (x_value < -700) { Mode = ListSongs; //-X for Songs } } } if (Mode == ListArtists) { read_file_names("/sd/myMusic"); uLCD.cls(); artistNames = getArtistList(filenames); printArtists(artistNames); //same thing as printSongs(); but for artists while ( x_value < 700 || x_value > -700 || y_value < 700 || y_value > -700) { acc.readYCount(&y_value); acc.readXCount(&x_value); if (y_value > 700) { Mode = MainMenu; //+Y for main menu. break; } if (y_value < -700) { Mode = ListSongsByArtist; //-Y to list songs by artists size_t index2 = artistNames[currentPointer].find("-"); artistChosen = artistNames[currentPointer].substr(0,index2); break; } if (x_value > 700) { if (currentPointer <= 0) { currentPointer--; break; } } if (x_value <-700) { if (currentPointer != artistNames.size()) { currentPointer++; break; } } } } if (Mode == ListSongs) { uLCD.cls(); read_file_names("/sd/myMusic"); songNames = getSongList(filenames); printSongs(songNames); uLCD.locate(0,0); while ( x_value < 700 || x_value > -700 || y_value < 700 || y_value > -700) { acc.readXCount(&x_value); acc.readYCount(&y_value); if (y_value > 700) { Mode = MainMenu; //+Y to go back to the main menu. break; } if (y_value < -700) { playList = songNames; Mode = PlaySong; //-Y to play the song. break; } if (x_value > 700) { if (currentPointer != 0) { currentPointer--; break; } } if (x_value <-700) { if (currentPointer != songNames.size()) { currentPointer++; break; } } // // //Debug Status // uLCD.locate(9,9); // uLCD.printf("X: %d", x_value); // uLCD.locate(9,10); // uLCD.printf("Y: %d", y_value); } } if (Mode == ListSongsByArtist) { uLCD.cls(); read_file_names("/sd/myMusic"); songNames = getSongsByArtistList(filenames, artistChosen); printSongs(songNames); uLCD.locate(0,0); uLCD.printf("ListSongsByArtist:"); while ( x_value < 700 || x_value > -700 || y_value < 700 || y_value > -700) { acc.readXCount(&x_value); acc.readYCount(&y_value); if (y_value > 700) { Mode = ListArtists; //+Y to go back to list artists break; } if (y_value < -700) { playList = songNames; Mode = PlaySong; //-Y to play the song. break; } if (x_value > 700) { if (currentPointer >= 0) { currentPointer--; ////this decreases the song counter (used for selection) break; } } if (x_value <-700) { if (currentPointer <= songNames.size()) { currentPointer++; ////this increases the song counter break; } } } } if (Mode == PlaySong) { uLCD.cls(); size_t index3 = playList[currentPointer].find("-"); uLCD.locate(0,2); uLCD.printf("Now Playing:"); uLCD.locate(2,4); uLCD.printf(playList[currentPointer].substr(0,index3).c_str()); uLCD.locate(2,6); uLCD.printf(playList[currentPointer].substr(index3+2, playList[currentPointer].length()-4).c_str()); playing = true; if (playing) { playSong("/sd/myMusic/" + playList[currentPointer]); } Mode = PauseSong; } if (Mode == PauseSong) { uLCD.cls(); uLCD.locate(2,2); uLCD.printf("Song Stopped."); uLCD.locate(2,4); uLCD.printf("Volume: %d", (int)(volume_change * 100/150*100) ); while ( x_value < 700 || x_value > -700 || y_value < 700 || y_value > -700) { acc.readXCount(&x_value); acc.readYCount(&y_value); if (x_value > 700) { VolumeUp(); break; } if (x_value < -700) { VolumeDown(); break; } if (y_value > 700) { //Change currentPointer++; songChosen = playList[currentPointer]; Mode = PlaySong; break; } if (y_value <-700) { currentPointer--; songChosen = playList[currentPointer]; //Change to previous song Mode = PlaySong; break; } if (Mode == MainMenu) { break; } } } } }