Thao Le Minh
Music Player
Dependencies: C12832 PinDetect USBHost mbed wave_player
Fork of
musicplayer
by 
Sarthak Jaiswal
Revision 2:087f60c3c445, committed 2016-12-12
- Comitter:
- thaolmk54
- Date:
- Mon Dec 12 04:51:19 2016 +0000
- Parent:
- 1:45d8f6557ff8
- Commit message:
- Music Player;
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832.lib Mon Dec 12 04:51:19 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/chris/code/C12832/#7de323fa46fe
--- a/PinDetect.lib Mon Mar 17 18:48:13 2014 +0000 +++ b/PinDetect.lib Mon Dec 12 04:51:19 2016 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/AjK/code/PinDetect/#cb3afc45028b +https://developer.mbed.org/users/thaolmk54/code/PinDetect/#f80b238f3de3
--- a/SDFileSystem.lib Mon Mar 17 18:48:13 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4
--- a/Speaker.lib Mon Mar 17 18:48:13 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/zchen311/code/Speaker/#41292907c9cb
--- a/TextLCD.lib Mon Mar 17 18:48:13 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/simon/code/TextLCD/#308d188a2d3a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHost.lib Mon Dec 12 04:51:19 2016 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/USBHost/#37c948cf0dbf
--- 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;
}
}
+