Revision 0:9cb0b3d1b9e6, committed 2010-10-12

Comitter:

mpetersen3

Date:

Tue Oct 12 21:25:35 2010 +0000

Commit message:

This revision adds a user interface for the mp3 player

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem.lib	Tue Oct 12 21:25:35 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_unsupported/code/fatfilesystem/
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.lib	Tue Oct 12 21:25:35 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/simon/code/TextLCD/#a53b3e2d6f1e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VS1002.cpp	Tue Oct 12 21:25:35 2010 +0000
@@ -0,0 +1,283 @@
+#include "VS1002.h"
+#include "mbed.h"
+#include "TextLCD.h"
+AnalogIn rotary1(p19);
+DigitalIn pause1(p28);
+TextLCD lcd(p10, p18, p24, p23, p22, p21, TextLCD::LCD16x2 ); // rs, e, d0-d3
+
+
+/* ==================================================================
+ * Constructor
+ * =================================================================*/
+VS1002::VS1002(
+PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name,
+         PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst,
+         PinName dreq, PinName dcs, PinName vol)
+    :
+     _sd(mmosi, mmiso, ssck, ccs, name),
+     _spi(mosi, miso, sck), 
+     _CS(cs), 
+     _RST(rst), 
+     _DREQ(dreq),
+     _DCS(dcs), 
+     _VOL(vol) {
+    
+    }    
+
+/*===================================================================
+ * Functions
+ *==================================================================*/
+ 
+void VS1002::cs_low(void)
+{
+    _CS = 0;                                
+}
+void VS1002::cs_high(void)
+{
+    _CS = 1;                                
+}
+void VS1002::dcs_low(void)
+{
+    _DCS = 0;
+}
+void VS1002::dcs_high(void)
+{
+    _DCS = 1;
+}
+void VS1002::sci_en(void)                    //SCI enable
+{
+    cs_high();
+    dcs_high();
+    cs_low();
+}
+void VS1002::sci_dis(void)                    //SCI disable
+{
+    cs_high();
+}
+void VS1002::sdi_en(void)                    //SDI enable
+{
+    dcs_high();
+    cs_high();
+    dcs_low();
+}
+void VS1002::sdi_dis(void)                    //SDI disable
+{
+    dcs_high();
+}
+void VS1002::reset(void)                    //hardware reset
+{
+    wait(0.01);
+    _RST = 0;
+    wait(0.01);
+    _RST = 1;
+    wait(0.10);
+}
+void VS1002::power_down(void)                //hardware and software reset
+{
+    cs_low();
+    reset();
+    sci_write(0x00, SM_PDOWN);
+    wait(0.01);
+    reset();
+}
+void VS1002::sci_initialise(void)
+{
+    _RST = 1;                                //no reset
+    _spi.format(8,0);                        //spi 8bit interface, steady state low
+    _spi.frequency(1000000);                //rising edge data record, freq. 1Mhz
+    
+    cs_low();
+    for(int i=0; i<4; i++)
+    {
+    _spi.write(0xFF);                        //clock the chip a bit
+    }
+    cs_high();
+    dcs_high();
+    wait_us(5);
+}
+void VS1002::sdi_initialise(void)
+{
+    _spi.format(8,0);
+    _spi.frequency(7000000);                //set to 7MHz
+    
+    cs_high();
+    dcs_high();
+}
+void VS1002::sci_write(unsigned char address, unsigned short int data)
+{
+    sci_en();                                //enables SCI/disables SDI
+    
+    while(!_DREQ);                            //wait unitl data request is high
+    _spi.write(0x02);                        //SCI write
+    _spi.write(address);                    //register address
+    _spi.write((data >> 8) & 0xFF);            //write out first half of data word
+    _spi.write(data & 0xFF);                //write out second half of data word
+    
+    sci_dis();                                //enables SDI/disables SCI
+    wait_us(5);
+}
+void VS1002::sdi_write(unsigned char datum)
+{
+    sdi_en();
+    
+    while(!_DREQ);
+    _spi.write(datum);
+    
+    sci_dis();
+}
+unsigned short int VS1002::read(unsigned short int address)
+{
+    cs_low();                                //enables SCI/disables SDI
+    
+    while(!_DREQ);                            //wait unitl data request is high
+    _spi.write(0x03);                        //SCI write
+    _spi.write(address);                    //register address
+    unsigned short int received = _spi.write(0x00);    //write out dummy byte
+    received <<= 8;
+    received += _spi.write(0x00);            //write out dummy byte
+    
+    cs_high();                                //enables SDI/disables SCI
+    
+    return received;                        //return received word
+}
+void VS1002::sine_test_activate(unsigned char wave)
+{
+    cs_high();                                //enables SDI/disables SCI
+    
+    while(!_DREQ);                            //wait unitl data request is high
+    _spi.write(0x53);                        //SDI write
+    _spi.write(0xEF);                        //SDI write
+    _spi.write(0x6E);                        //SDI write
+    _spi.write(wave);                        //SDI write
+    _spi.write(0x00);                        //filler byte
+    _spi.write(0x00);                        //filler byte
+    _spi.write(0x00);                        //filler byte
+    _spi.write(0x00);                        //filler byte
+
+    cs_low();                                //enables SCI/disables SDI
+}
+void VS1002::sine_test_deactivate(void)
+{
+    cs_high();
+    
+    while(!_DREQ);
+    _spi.write(0x45);                        //SDI write
+    _spi.write(0x78);                        //SDI write
+    _spi.write(0x69);                        //SDI write
+    _spi.write(0x74);                        //SDI write
+    _spi.write(0x00);                        //filler byte
+    _spi.write(0x00);                        //filler byte
+    _spi.write(0x00);                        //filler byte
+    _spi.write(0x00);                        //filler byte
+}
+void VS1002::volume(void)
+{
+ #ifdef FIXED_VOL
+    unsigned char volumize = (0 * 255); // FIXED VOL (not support volume input)
+ #else
+    unsigned char volumize = (_VOL * 255);
+ #endif
+    while(!_DREQ);
+    
+    unsigned short int attenuation = ((256 * volumize) + volumize);
+    sci_write(0x0B, attenuation);
+   
+}
+
+void VS1002::play_song(int song_number)
+{
+    /*====== Song Select ======*/
+    
+//    char list[10000] = {0};
+    char list[1000] = {0};
+    char str[16] = {"/sd/"};
+    unsigned int startplace = 0;
+    unsigned int endplace = 0;
+    unsigned int play = 0;
+    num_of_files = 0;
+
+    DIR *d;
+    struct dirent *p;
+    d = opendir("/sd");
+    if(d != NULL) 
+           {
+               while((p = readdir(d)) != NULL) 
+           {
+               strcat(list, "*");
+               strcat(list, p->d_name);
+               num_of_files++;
+           }
+    }
+    else 
+    {
+         perror("Could not open directory!");
+    }
+    strcat(list, "*");                                //terminating *
+    if(num_of_files < song_number)
+    {
+        return;
+    }
+    while(play != song_number)
+    {
+        char symbol = list[startplace];
+        startplace++;
+        if(symbol == 0x2A)                        //0x2A = "*"    
+        {
+            play++;
+        }                        
+    }
+    play = 0;
+    while(play != (song_number+1))
+    {
+        char symbol = list[endplace];
+        endplace++;    
+        if(symbol == 0x2A)                        //0x2A = "*"    
+        {
+            play++;
+        }
+    }
+
+    strncat(str, &list[startplace], endplace-startplace);
+    str[(endplace-startplace)+3] = '\0';
+
+//printf("list: %s\r\n",list); //debug      
+
+    /*====== File Transfer ======*/
+
+     // return if not MP3 file
+    if (!((strstr(str,"MP3")!=NULL)||(strstr(str,"mp3")!=NULL))) return;
+    // display filename.mp3 to the lcd screen
+    lcd.printf("Now Playing: %s\r\n",str);
+    
+    FILE *song;
+    unsigned char array[512];
+        
+    song = fopen(str, "rb");
+    
+    if(!song) 
+    {
+        exit(1);
+    }
+   
+       while((!feof(song))&&!pause1)
+    {
+           fread(&array, 1, 512, song);
+           for(int i=0; i<512; i++)
+           {
+#ifndef FS_ONLY
+            sdi_write(array[i]);
+        //    printf(".");
+#endif
+           }
+#ifndef FS_ONLY
+            volume();
+#endif
+       }
+    for(int n=0; n<2048; n++)
+       {
+#ifndef FS_ONLY
+           sdi_write(0x00);
+#endif
+       }
+    fclose(song);                                //close the file
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VS1002.h	Tue Oct 12 21:25:35 2010 +0000
@@ -0,0 +1,74 @@
+#ifndef VS1002_H
+#define VS1002_H
+
+//#define FS_ONLY
+#define FIXED_VOL
+
+#include "mbed.h"
+#include "SDFileSystem.h"
+#include "string"
+#include "string.h"
+
+//SCI_MODE register bits as of p.26 of the datasheet
+#define SM_DIFF         0x0001
+#define SM_SETTOZERO    0x0002
+#define SM_RESET        0x0004
+#define SM_OUTOFWAV     0x0008
+#define SM_PDOWN        0x0010
+#define SM_TESTS        0x0020
+#define SM_STREAM       0x0040
+#define SM_PLUSV        0x0080
+#define SM_DACT         0x0100
+#define SM_SDIORD       0x0200
+#define SM_SDISHARE     0x0400
+#define SM_SDINEW       0x0800
+#define SM_ADPCM        0x1000
+#define SM_ADPCM_HP     0x2000
+
+
+class VS1002  {
+
+public:
+//    VS1002(int _mmosi, int _mmiso, int _ssck, int _ccs, const char* _name,
+// int _mosi, int _miso, int _sck, int _cs, int _rst, int _dreq, int _dcs, int _vol);
+    VS1002(PinName _mmosi, PinName _mmiso, PinName _ssck, PinName _ccs, const char* _name, 
+    PinName _mosi, PinName _miso, PinName _sck, PinName _cs, PinName _rst, PinName _dreq,
+    PinName _dcs, PinName _vol);
+    
+    void cs_low(void); 
+    void cs_high(void);
+    void dcs_low(void);
+    void dcs_high(void);
+    void sci_en(void);
+    void sci_dis(void);
+    void sdi_en(void);
+    void sdi_dis(void);
+    
+    void sci_initialise(void);
+    void sdi_initialise(void);
+    void reset(void);
+    void power_down(void);
+ 
+    void sci_write(unsigned char, unsigned short int);
+    void sdi_write(unsigned char);
+    unsigned short int read(unsigned short int);
+    void sine_test_activate(unsigned char);
+    void volume(void);
+    void sine_test_deactivate(void);
+    void play_song(int);
+    
+    int num_of_files;
+    
+    DigitalIn _DREQ;
+    DigitalOut _RST;
+    AnalogIn _VOL;
+    
+protected:
+
+    SPI _spi;
+    DigitalOut _CS;
+    DigitalOut _DCS;
+    SDFileSystem _sd;
+
+};
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 12 21:25:35 2010 +0000
@@ -0,0 +1,114 @@
+
+#include "mbed.h"
+#include "VS1002.h"
+#include "TextLCD.h"
+
+TextLCD lcd2(p10, p18, p24, p23, p22, p21, TextLCD::LCD16x2 ); // rs, e, d0-d3
+
+
+/*
+
+ Arduino MP3 Shield MP3Player_UI
+ 2010/10/10
+ This program comes from http://mbed.org/cookbook/VS1002-MP3-Decoder and is the work of xshige.
+ (Very small modification done to fit latest libs)
+**more small modifications done to add a small user interface via LCD screen, rotary encoder and dipswitch,
+see http://mbed.org/cookbook/MP3-Player for more information on pinout for these devices, these UI mods by (mpetersen3 and kbuck3)
+
+ Pin Assigenment for Arduino MP3 Shield
+ (VS1053 employed, issued by sparkfun.com)
+
+ MP3 Sheild Side   |  mbed Side
+ ---------------------------------------
+  D2(BSYNC)------------17
+  D3(DREQ)-------------16
+
+  D9(CS)---------------14
+
+  D11(MOSI)------------5
+  D12(MISO)------------6
+  D13(SCK)-------------7
+
+  GND------------------GND(1)
+  5V-------------------VU(39)
+  RESET----------------15
+
+ Volume will not used. (pin20 will not used)
+
+*/
+
+
+//PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name,
+//         PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst,
+//         PinName dreq, PinName dcs, PinName vol)
+VS1002 mp3(p11, p12, p13, p8, "sd",
+           p5, p6, p7, p14, p15,
+           p16, p17, p20);     //p14 in BoB non-functional so replace with p18
+AnalogIn rotary(p19);
+DigitalIn pause(p28);
+
+int main () {
+    // make debug port Fast
+    Serial pc(USBTX, USBRX);
+    pc.baud(9600);
+
+
+    // pc.baud(115200);
+//  pc.baud(230400);
+
+    /*============================================================
+     * MP3 Initialising
+     *==========================================================*/
+#ifndef FS_ONLY
+    mp3._RST = 1;
+    mp3.cs_high();                                   //chip disabled
+    mp3.sci_initialise();                            //initialise MBED
+    mp3.sci_write(0x00,(SM_SDINEW+SM_STREAM+SM_DIFF));
+    mp3.sci_write(0x03, 0x9800);
+    mp3.sdi_initialise();
+#endif
+    /*============================================================
+     * This is the good part
+     *==========================================================*/
+    int a=0;
+    printf("%i\n",a);
+    while (true) {
+
+        
+
+        
+        mp3.play_song(a);
+        a++;
+        wait(1);
+        
+        if (pause) {
+            while (pause) {
+                // shows you which song number you have chosen using the rotary dial
+                lcd2.printf("You have chosen the %i song\n",a);
+                if ((rotary>0)&&(rotary<=0.1)) {
+                    a=1;
+
+                } else if ((rotary>0.1)&&(rotary<=0.2)) {
+                    a=2;
+                } else if ((rotary>0.2)&&(rotary<=0.3)) {
+                    a=3;
+                } else if ((rotary>0.3)&&(rotary<=0.4)) {
+                    a=4;
+                } else if ((rotary>0.4)&&(rotary<=0.5)) {
+                    a=5;
+                } else if ((rotary>0.5)&&(rotary<=0.6)) {
+                    a=6;
+                } else if ((rotary>0.6)&&(rotary<=0.7)) {
+                    a=7;
+                } else if ((rotary>0.7)&&(rotary<=0.8)) {
+                    a=8;
+                } else if ((rotary>0.8)&&(rotary<=0.9)) {
+                    a=9;
+                } else if ((rotary>0.9)&&(rotary<=1.0)) {
+                    a=10;
+                }
+            }
+            }
+        }
+        printf("Done.\r\n");
+    }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Oct 12 21:25:35 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e