Instead of holding the songs on a SD card, this one is for a USB stick
Dependencies: WavPlayer mbed C12832 MSCFileSystem WavPlayerSD
main.cpp
- Committer:
- JostBaus
- Date:
- 2019-04-14
- Revision:
- 6:ea92f15a3798
- Parent:
- 4:efd586e5c9a7
File content as of revision 6:ea92f15a3798:
#include "mbed.h" #include "string.h" #include "stdio.h" #include "math.h" #include "C12832.h" #include "WavPlayer.h" #include "MSCFileSystem.h" #include <string> using namespace std; //Communication\interfaces Serial pc(USBTX,USBRX); //USB serial C12832 lcd(p5, p7, p6, p8, p11); //LCD MSCFileSystem msc("USB"); //USB //in- and outputs DigitalIn PauseBtn(p21); DigitalIn StopBtn(p22); //joystick BusIn joy(p19,p17,p18,p20); DigitalIn joyBtn(p14); //DAC output WavPlayer waver; //set up DAC to use wave player library //timer Timer dur; //func void read_file_names(char *dir); //SDCard read file names void menu(); void PlaySong(int m); void PauseSong(); void StopSong(); //variables int m = 1; //index of choosen songs int i = 0; //index of files from folder int Paused = 0; //Is the song paused? int Stopped = 0; //Is the song stopped? char* songs[]; int main() { while(sdDetect == 0) { lcd.locate(0,0); lcd.printf("Insert SD Card!"); wait(0.5); } menu(); } void menu() { lcd.cls(); sd.disk_initialize(); read_file_names("/USB/Music"); while(1) { lcd.locate(0,0); lcd.printf("Please select a song"); if(joy == 1) { m++; if(m == 5) { m = 0; } } else if(joy == 2) { m--; if(m == -1) { m = 4; } } lcd.locate(0,15); lcd.printf("%s", (songs[m])); if(joyBtn == 1) { PlaySong(m); } wait(0.1); } } void read_file_names(char *dir) // function that reads in file names from sd cards { DIR *dp; struct dirent *dirp; dp = opendir(dir); //read all directory and file names in current directory into filename vector while((dirp = readdir(dp)) != NULL) { songs[i] = dirp->d_name; i++; } } void PlaySong(int m) { string songname = songs[m]; string a = "/USB/Music/"; string fname = a + songname; //retrieves the file name FILE *wave_file; dur.start(); lcd.cls(); lcd.locate(0,0); lcd.printf("Now playing"); wave_file = fopen(fname.c_str(),"r"); //opens the music file waver.open(wave_file); waver.play(); //plays the music file lcd.locate(0,10); lcd.printf("%s", (songs[m])); while(Stopped == 0) { if(StopBtn == 1) { StopSong(); } if(PauseBtn == 1) { PauseSong(); } lcd.locate(0,20); lcd.printf("%2.f s", dur.read()); } fclose(wave_file); menu(); } void PauseSong() { while(1) { if(Paused == 0) { string songname = songs[m]; unsigned index = songname.find(".wav"); songname = songname.substr(0,index); lcd.printf(songname.c_str()); dur.stop(); Paused = 1; } else if(StopBtn == 1) { StopSong(); } else { Paused = 0; dur.start(); } } } void StopSong() { lcd.cls(); dur.reset(); Stopped = 1; }