ze chen
mp3 player hw gatech
Dependencies: PinDetect SDFileSystem TextLCD mbed wave_player
Revision 0:00b023aa8f45, committed 2013-07-14
- Comitter:
- zchen311
- Date:
- Sun Jul 14 20:31:43 2013 +0000
- Commit message:
- mp3 player done
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PinDetect.lib Sun Jul 14 20:31:43 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/AjK/code/PinDetect/#cb3afc45028b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Sun Jul 14 20:31:43 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/zchen311/code/SDFileSystem/#0046f1b576ec
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Sun Jul 14 20:31:43 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/zchen311/code/TextLCD/#d45fa961da1b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Jul 14 20:31:43 2013 +0000
@@ -0,0 +1,176 @@
+
+#include "mbed.h"
+#include "SDFileSystem.h"
+#include "wave_player.h"
+#include "TextLCD.h"
+#include "PinDetect.h"
+#include <string>
+
+#include <vector>
+
+SDFileSystem sd(p5, p6, p7, p8,p9, "sd"); //SD card
+TextLCD myLCD(p22, p23, p24, p25, p26, p27); //TextLCD
+AnalogOut DACout(p18);
+//AnalogOut DACout(p20);
+
+void read_file_names(char *);
+void volumePressed();
+wave_player waver(&DACout);
+vector<string> filenames; //filenames are stored in a vector string
+PinDetect pb1(p28); // Up button - scrolls up the list
+PinDetect pb2(p29); // Down button - scrolls down the list
+PinDetect pb3(p30); // Play/Pause- selects and plays or pauses the filename
+PinDetect pb4(p15);
+int volatile Scrollup=0; // heat to temp
+int volatile Scrolldown=0;// cool to temp
+int volatile total=0; // heat or cool mpde
+bool select=false;
+bool *selectptr=&select;
+
+
+void pb1_hit_callback (void)
+{
+ Scrollup++;
+
+
+ if(Scrollup >= total)
+ Scrollup=0;
+
+}
+// Callback routine is interrupt activated by a debounced pb2 hit
+void pb2_hit_callback (void)
+{
+
+ Scrollup--;
+ if(Scrollup < 0)
+ Scrollup = total-1;
+}
+
+// Callback routine is interrupt activated by a debounced pb3 hit
+
+void pb3_hit_callback (void)
+{
+ select=!select;
+}
+// Callback routine is interrupt activated by a debounced pb3 hit
+void pb4_hit_callback (void)
+{
+
+ volumePressed();
+
+
+
+}
+int main()
+{
+// Use internal pullups for the three pushbuttons
+ pb1.mode(PullUp);
+ pb2.mode(PullUp);
+ pb3.mode(PullUp);
+ pb4.mode(PullUp);
+ // Delay for initial pullup to take effect
+ 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);
+ // Start sampling pb inputs using interrupts
+ pb1.setSampleFrequency();
+ pb2.setSampleFrequency();
+ pb3.setSampleFrequency();
+ pb4.setSampleFrequency();
+
+
+ // myLCD.printf("\n\n\nHello, wave world!\n");
+ // wave_file = fopen("/sd/myMusic", "r");
+ bool SDcard=0;
+ while(!SDcard)
+ { SDcard=sd.sd_inserted();
+ if( SDcard==false){
+ myLCD.locate(0,0);
+ myLCD.printf("Insert SDCARD");
+ }
+ else
+ myLCD.cls();
+ }
+ FILE *wave_file;
+ read_file_names("/sd/myMusic");
+ string directory;
+ directory="/sd/myMusic";
+ string song;
+
+
+ while(1) {
+ //int pos=size((*it).c_str())-4;
+ int index=0;
+ index=Scrollup;
+ int len=filenames[index].size();
+
+ myLCD.cls();
+ myLCD.locate(0,0);
+ myLCD.printf("%s",filenames[index].substr(0,len-4));
+
+ if(select==true) {
+ song = directory + "/" + filenames[index];
+ wave_file = fopen(song.c_str(), "r");
+ myLCD.locate(0,1);
+ myLCD.printf("%s","Now Playing");
+ waver.play(wave_file,selectptr);
+ select=false;
+ fclose(wave_file);
+
+ }
+ else
+ //myLCD.cls();
+ //myLCD.printf("%d",Scrollup);
+ //myLCD.printf("%s","now playing");
+ //waver.play(wave_file);
+ wait(0.3);
+ }
+
+
+
+
+
+}
+
+
+void read_file_names(char *dir)
+
+{
+
+ 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) {
+ filenames.push_back(string(dirp->d_name));
+ total++;
+ }
+ }
+void volumePressed(){
+
+
+
+ int *volumeMod=waver.getVolumeMod();
+
+ *volumeMod = *volumeMod + 1;
+
+ if (*volumeMod >= 16)
+
+ *volumeMod = 0;
+}
+
+
+
+
+
+
+
+
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sun Jul 14 20:31:43 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/0954ebd79f59 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wave_player.lib Sun Jul 14 20:31:43 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/zchen311/code/wave_player/#353c78110e44