main.cpp

00001 
00002 #include "mbed.h"
00003 #include "SDFileSystem.h"
00004 #include "wave_player.h"
00005 #include  "TextLCD.h"
00006 #include "PinDetect.h"
00007 #include <string>
00008 
00009 #include <vector>
00010 
00011 SDFileSystem sd(p5, p6, p7, p8,p9, "sd"); //SD card
00012 TextLCD myLCD(p22, p23, p24, p25, p26, p27); //TextLCD
00013 AnalogOut DACout(p18);
00014 //AnalogOut DACout(p20);
00015 
00016 void read_file_names(char *);
00017 void volumePressed();
00018 wave_player waver(&DACout);
00019 vector<string> filenames; //filenames are stored in a vector string
00020 PinDetect pb1(p28);  // Up button - scrolls up the list
00021 PinDetect pb2(p29);  // Down button - scrolls down the list
00022 PinDetect pb3(p30);  // Play/Pause- selects and plays or pauses the filename
00023 PinDetect pb4(p15);
00024 int volatile Scrollup=0; // heat to temp
00025 int volatile Scrolldown=0;// cool to temp
00026 int volatile total=0; // heat or cool mpde
00027 bool  select=false;
00028 bool *selectptr=&select;
00029 
00030 
00031 void pb1_hit_callback (void)
00032 {
00033     Scrollup++;
00034     
00035 
00036     if(Scrollup >= total)
00037         Scrollup=0;
00038 
00039 }
00040 // Callback routine is interrupt activated by a debounced pb2 hit
00041 void pb2_hit_callback (void)
00042 {
00043 
00044     Scrollup--;
00045     if(Scrollup < 0)
00046         Scrollup = total-1;
00047 }
00048 
00049 // Callback routine is interrupt activated by a debounced pb3 hit
00050 
00051 void pb3_hit_callback (void)
00052 {
00053     select=!select;
00054 }
00055 // Callback routine is interrupt activated by a debounced pb3 hit
00056 void pb4_hit_callback (void)
00057 {
00058 
00059    volumePressed();
00060 
00061 
00062 
00063 }
00064 int main()
00065 {
00066 // Use internal pullups for the three pushbuttons
00067     pb1.mode(PullUp);
00068     pb2.mode(PullUp);
00069     pb3.mode(PullUp);
00070     pb4.mode(PullUp);
00071     // Delay for initial pullup to take effect
00072     wait(.01);
00073     //Setup Interrupt callback functions for a pb hit
00074     pb1.attach_deasserted(&pb1_hit_callback);
00075     pb2.attach_deasserted(&pb2_hit_callback);
00076     pb3.attach_deasserted(&pb3_hit_callback);
00077     pb4.attach_deasserted(&pb4_hit_callback);
00078     // Start sampling pb inputs using interrupts
00079     pb1.setSampleFrequency();
00080     pb2.setSampleFrequency();
00081     pb3.setSampleFrequency();
00082     pb4.setSampleFrequency();
00083 
00084     
00085     // myLCD.printf("\n\n\nHello, wave world!\n");
00086  // wave_file = fopen("/sd/myMusic", "r");
00087  bool SDcard=0;
00088  while(!SDcard)
00089  { SDcard=sd.sd_inserted();
00090    if( SDcard==false){
00091    myLCD.locate(0,0);
00092     myLCD.printf("Insert SDCARD");
00093     }
00094     else 
00095      myLCD.cls();
00096  }
00097  FILE *wave_file;
00098     read_file_names("/sd/myMusic");
00099     string directory;
00100       directory="/sd/myMusic";
00101         string song;
00102          
00103         
00104     while(1) {
00105         //int pos=size((*it).c_str())-4;
00106         int index=0;
00107         index=Scrollup;
00108         int len=filenames[index].size();
00109         
00110         myLCD.cls();
00111         myLCD.locate(0,0);
00112         myLCD.printf("%s",filenames[index].substr(0,len-4));
00113       
00114         if(select==true) {
00115         song = directory + "/" + filenames[index];
00116          wave_file = fopen(song.c_str(), "r");
00117          myLCD.locate(0,1);
00118          myLCD.printf("%s","Now Playing");
00119             waver.play(wave_file,selectptr);
00120             select=false;
00121             fclose(wave_file);
00122             
00123         }
00124         else
00125         //myLCD.cls();
00126         //myLCD.printf("%d",Scrollup);
00127         //myLCD.printf("%s","now playing");
00128         //waver.play(wave_file);
00129         wait(0.3);
00130     }
00131 
00132 
00133 
00134 
00135 
00136 }
00137 
00138 
00139 void read_file_names(char *dir)
00140 
00141 {
00142 
00143     DIR *dp;
00144 
00145     struct dirent *dirp;
00146 
00147     dp = opendir(dir);
00148 
00149     //read all directory and file names in current directory into filename vector
00150     while((dirp = readdir(dp)) != NULL) {
00151         filenames.push_back(string(dirp->d_name));
00152         total++;
00153     }
00154     }
00155 void volumePressed(){
00156  
00157            
00158             
00159             int *volumeMod=waver.getVolumeMod();
00160 
00161             *volumeMod = *volumeMod + 1;
00162 
00163             if (*volumeMod >= 16)
00164 
00165             *volumeMod  = 0;
00166 }
00167 
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00176