Diff: main.cpp

Revision:

2:087f60c3c445

Parent:

1:45d8f6557ff8

--- a/main.cpp	Mon Mar 17 18:48:13 2014 +0000
+++ b/main.cpp	Mon Dec 12 04:51:19 2016 +0000
@@ -1,37 +1,42 @@
 #include "mbed.h"
-#include "SDFileSystem.h"
 #include "wave_player.h"
-#include "TextLCD.h"
 #include "PinDetect.h"
-#include "Speaker.h"
+#include "USBHostMSD.h"
+#include "C12832.h"
 #include <vector>
 #include <string>
 
 //Set up LEDs
-DigitalOut myled(LED1);
-DigitalOut myled2(LED2);
-DigitalOut myled3(LED3);
-DigitalOut myled4(LED4);
+DigitalOut led1( LED1 );
+DigitalOut led2( LED2 );
+DigitalOut led3( LED3 );
+DigitalOut led4( LED4 );
+
+//Setup RGB led
+PwmOut r (p23); //RGB LED pins
+PwmOut g (p24);
+PwmOut b (p25);
 
 using namespace std;
 
-SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card
-TextLCD lcd(p9, p10, p11, p12, p13, p14); // rs, e, d4-d7
-DigitalIn sdDetect(p17); // Set up a pin for SD Card Detect
+C12832 lcd(p5, p7, p6, p8, p11);
 
-PinDetect pb1(p28); // pb forup shift
-PinDetect pb2(p29); // pb fordown shift
-PinDetect pb3(p30); // pb for pause
-PinDetect pb4(p27); // pb for volume or play
-
+//Joystick controller
+PinDetect pb1(p13);//joyleft
+PinDetect pb2(p16);//joyright
+PinDetect pb3(p12); //joyup
+PinDetect pb4(p15); //joydown
+PinDetect pb5(p14);//center
 
 AnalogOut DACout(p18); //set up speaker
 wave_player waver(&DACout); //set up wave player library
 int pos = 0; // index of the song
 int vol = 0; // volume controller
  
-bool playing = false; //variable for pause/play since we only have 1 pb for that
+bool playing = false; //variable for pause/play 
+bool firstplay = false; //variable for first play
 vector<string> filenames; //filenames are stored in a vector string
+
 void read_file_names(char *dir) // function that reads in file names from sd cards
 {
     DIR *dp;
@@ -42,107 +47,132 @@
         filenames.push_back(string(dirp->d_name));
     }
 }
+
 //interrupt handler for pb1 
 void pb1_hit_callback (void)
-{
-    // it checks for the total number of songs in the sd card..then increments the index until it reaches the last one, then resets to 0
+{ 
     int l = filenames.size();
     if (pos < (l-1)) {
         pos++;
     } else if (pos == (l-1)) {
         pos = 0;
     }
-    string songname = filenames[pos];
-    unsigned index = songname.find(".wav");
-    songname = songname.substr(0,index);
-    lcd.cls();
-    lcd.printf(songname.c_str()); //it clears screen and then sets the new index song in the lcd display
+    led1 = 1;
+    led2 = 0;
+    led3 = 0;
+    led4 = 0;
 }
 //interrupt handler for pb2
 void pb2_hit_callback (void)
 {
-    //does opposite of pb1..moves the index down..from 2nd song to 1st song via changing the index number and then calling in the vector
     int l = filenames.size();
     if (pos > 0) {
         pos--;
     } else if (pos == 0 ) {
         pos = l-1;
     }
-    string songname = filenames[pos];
-    unsigned index = songname.find(".wav");
-    songname = songname.substr(0,index);
-    lcd.cls();
-    lcd.printf(songname.c_str());
+    led1 = 0;
+    led2 = 1;
+    led3 = 0;
+    led4 = 0;
+}
+
+//interrupt handler for pb3
+void pb3_hit_callback (void){
+    vol = (vol+1) % 16;
+    led1 = 0;
+    led2 = 0;
+    led3 = 1;
+    led4 = 0;
 }
+
+//interrupt handler for pb4 
+void pb4_hit_callback (void){
+    if (vol > 1) {
+        vol = (vol-1) % 16;
+    }
+    led1 = 0;
+    led2 = 0;
+    led3 = 0;
+    led4 = 1;
+}
+
 //interrupt handler for 3rd pushbutton
-void pb3_hit_callback (void)
+void pb5_hit_callback (void)
 {
     //this interrupt handler changes the play to pause mode or vice versa
-    //this is done using the boolean playing
-    if (playing == false) {
+    if (playing == false && firstplay == false) {
         playing = true; 
+        firstplay = true;
+        r = 1;
     } else if (playing == true) {
-        lcd.cls();
-        playing = false; 
         string songname = filenames[pos];
-        unsigned index = songname.find(".wav");
-        songname = songname.substr(0,index);
-        lcd.printf(songname.c_str());
+        playing = false;
+        firstplay = false;
+        g = 1;
     }
 }
-//interrupt handler for pb4
-void pb4_hit_callback (void){
-    // this pb changes the volume by lowering the volume until it reaches 0. then it resets to the max volume
-    // the volume range has been divided into 16 possible ranges. and hence, it toggles through those 16 values
-    // this only changes the variable vol, which is then used in the wave player file to actually adjust the volume
-    vol = (vol+1) % 16;
-}
+
 
 int main()
 {
-    sdDetect.mode(PullUp);
-     wait(.1);
-     //wait after pulling up the sd card, 
-    // read file names into vector of strings
-    pb1.mode(PullUp);
-    pb2.mode(PullUp);
-    pb3.mode(PullUp);
-    pb4.mode(PullUp);
-    // Delay for initial pullup to take effect
+    //test LCD display
+    lcd.cls();
+    lcd.locate(0,3);
+    lcd.printf("MBED Music Player");
+
+    pb1.mode(PullDown);
+    pb2.mode(PullDown);
+    pb3.mode(PullDown);
+    pb4.mode(PullDown);
+    pb5.mode(PullDown);
+
     wait(.01);
     // Setup Interrupt callback functions for a pb hit
     pb1.attach_deasserted(&pb1_hit_callback);
     pb2.attach_deasserted(&pb2_hit_callback);
     pb3.attach_deasserted(&pb3_hit_callback);
     pb4.attach_deasserted(&pb4_hit_callback);
+    pb5.attach_deasserted(&pb5_hit_callback);
     // Start sampling pb inputs using interrupts
     pb1.setSampleFrequency();
     pb2.setSampleFrequency();
     pb3.setSampleFrequency();
     pb4.setSampleFrequency();
+    pb5.setSampleFrequency();
+
     lcd.cls();
-    //detects whethere there is a SD card or not.. if not then it prints and informs the user
-    while(sdDetect ==0) {
+    USBHostMSD msc("msc");
+    // Check if a USB is connected
+    while(!msc.connect()) {
         lcd.locate(0,0);
-        lcd.printf("Insert SD Card");
+        lcd.printf("Insert USB");
         wait(.5);
     }    
-    lcd.cls(); 
-    wait(.5);
-    sd.disk_initialize();
-    read_file_names("/sd/Music");
-    while(1) {
-        //while pb3 is low, then we can start playing the song
-        while(playing == true) { //we have 2 while loops..one while loop makes sure the music player is always on, the other one is for the song
+    // Read the songs array, please note that your wav files have to be stored in the same directory
+    read_file_names("/msc/music_wav");
+    
+    while(1) {    
+        lcd.cls();
+        lcd.locate(0,2);
+        lcd.printf("Press joystick to play");
+        //while pb3 is low, press fire button to start playing a song
+        while(playing == true && firstplay == false) { 
             string songname = filenames[pos];
-            string a = "/sd/Music/";
+            string a = "/msc/music_wav/";
             string fname = a + songname; //retrieves the file name
             FILE *wave_file; 
+            lcd.cls();
             lcd.locate(0,1);
-            lcd.printf("Now Playing");
+            lcd.printf("Playing: %s",fname.c_str());
             wave_file = fopen(fname.c_str(),"r"); //opens the music file
-            waver.play(wave_file); //plays the music file
+            waver.play(wave_file);
             fclose(wave_file);
         }
+        firstplay = false;
+        // if device disconnected, try to connect again
+        if (!msc.connected())
+            break;
     }
 }
+