main.cpp

00001 #include "mbed.h"
00002 #include "SDFileSystem.h"
00003 #include "uLCD_4DGL.h"
00004 #include "VS1002.h"
00005 
00006 uLCD_4DGL uLCD(p28, p27, p30);
00007 
00008 DigitalIn Dreq(p26);
00009 DigitalOut XDCS(p25);
00010 DigitalOut reset(p23);
00011 DigitalOut XCS(p22);
00012 
00013 SPI mp3Board(p11, p12, p13); // mosi, miso, sclk
00014 SDFileSystem sd(p5, p6, p7, p8, "sd"); // DI, DO, SCK, CS
00015 
00016 int killLoop = 1;
00017 int mp3Chunk;
00018 int fileSize;
00019 
00020 long getFileSize(FILE *fp) {
00021     fseek(fp, 0, SEEK_END);
00022     int size = ftell(fp);
00023     fseek(fp, 0, SEEK_SET);
00024     return size;
00025 }
00026 
00027 void sdi_write(unsigned char datum)
00028 {
00029     XCS = 1;  
00030     XDCS = 1;
00031     XCS = 0;   
00032     while(!Dreq);
00033     mp3Board.write(datum);
00034     XCS = 1;
00035 }
00036 
00037 /*
00038 void sdi_write(unsigned char datum)
00039 {
00040     _CS = 1;  
00041     _DCS = 1;
00042     _CS = 0;   
00043     while(!_DREQ);
00044     _spi.write(datum);
00045     _CS = 1;
00046 }
00047 ////////////////////////////////////////////////////////////////////////////
00048 VS1002::VS1002(
00049 PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name,
00050          PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst,
00051          PinName dreq, PinName dcs, PinName vol)
00052     :
00053      _sd(mmosi, mmiso, ssck, ccs, name),
00054      _spi(mosi, miso, sck), 
00055      _CS(cs), 
00056      _RST(rst), 
00057      _DREQ(dreq),
00058      _DCS(dcs), 
00059      _VOL(vol) {
00060     
00061     }    */
00062 ///////////////////////////////////////////////////////////////////////////
00063 
00064 int main() {
00065     reset = 1;
00066     //Sine test // So, the simplified procedure is:
00067     XDCS = 1; //1) Always keep XDCS at logical 1.
00068     XCS = 0; //2) Set XCS to 0, 
00069     mp3Board.write(0x02); //0x02 is the write opcode
00070     mp3Board.write(0x00); //0x00 is the address of the sci mode register
00071     mp3Board.write(0x0A); //0x0A (11 in dec) is the SM_SDINEW bit    //send SCI command to set SCI_MODE with SM_SHARED and SM_SDINEW set to 1, 
00072     XCS = 1;    //then set XCS back to 1.
00073     mp3Board.write(0x53); //3) While XCS is 1, send sine test activation bytes, e.g. 0x53 0xef 0x6e 0x7e 0x00 0x00 0x00 0x00.
00074     mp3Board.write(0xEF);
00075     mp3Board.write(0x6E);
00076     mp3Board.write(0x44);
00077     mp3Board.write(0x00);
00078     mp3Board.write(0x00);
00079     mp3Board.write(0x00);
00080     mp3Board.write(0x00);
00081     
00082     
00083     /*
00084     mp3Board.frequency(12000000);
00085     XCS=1;
00086     XCS=0; //pull xcs low to begin sci write. Sets mode to vs1002, 
00087     mp3Board.write(0x02); //0x02 is the write opcode
00088     mp3Board.write(0x00); //0x00 is the address of the sci mode register
00089     mp3Board.write(0x0A); //0x0A (11 in dec) is the SM_SDINEW bit
00090     XCS=1; //pulled high to end write sequence
00091     
00092     uLCD.locate(0,0);
00093     uLCD.printf("Initialized...");
00094     
00095     FILE *mp3_file;
00096     unsigned char mp3Chunk[512];
00097     mp3_file = fopen("/sd/GGW.mp3","rb");
00098     
00099     if (mp3_file !=NULL)
00100     {
00101         uLCD.locate(0,1);
00102         uLCD.printf("File found");
00103         XDCS = 1;
00104         XDCS = 0;
00105         fileSize=getFileSize(mp3_file);
00106             uLCD.locate(0,3);
00107             uLCD.printf("Filesize: ");
00108             uLCD.locate(0,4);
00109             uLCD.printf(" %i", fileSize);
00110         //fread(&mp3Chunk, 1, 1, mp3_file);
00111             uLCD.locate(0,5);
00112             uLCD.printf("mp3 file: ");
00113             uLCD.locate(0,6);
00114             uLCD.printf(" %i", mp3_file);
00115             uLCD.locate(0,7);
00116             //uLCD.printf("mp3 chunk: ");
00117             //uLCD.locate(0,8);
00118             //uLCD.printf(" %i", mp3Chunk);
00119         //would have funtion here passing the 8 bits to arm assembler code, hence the necessatity for 8 btis only!
00120         //mp3Board.write(mp3Chunk);
00121             uLCD.locate(0,10);
00122             uLCD.printf("File writing...");
00123 //////////////////////////////////////////////////////////////////////////////
00124         fread(&mp3Chunk, 1, 512, mp3_file);
00125         for(int i=0; i<512; i++)
00126         {
00127             #ifndef FS_ONLY
00128             //mp3Board.write(mp3Chunk[i]);
00129             sdi_write(mp3Chunk[i]);
00130                 uLCD.locate(0,11);
00131                 uLCD.printf("... %i", i);
00132                 uLCD.locate(0,12);
00133                 uLCD.printf(".. %i", mp3Chunk[i]);
00134             #endif
00135         }
00136         #ifndef FS_ONLY
00137             //Volume set to 0 dB
00138             XCS = 1; 
00139             XDCS = 1;
00140             XCS = 0;                               //enables SCI/disables SDI
00141             while(!Dreq);                            //wait unitl data request is high
00142             mp3Board.write(0x02);                        //SCI write
00143             mp3Board.write(0x0B);                    //register address
00144             mp3Board.write((0 >> 8) & 0xFF);            //write out first half of data word
00145             mp3Board.write(0 & 0xFF);                //write out second half of data word
00146             XCS = 1;                                //enables SDI/disables SCI
00147             wait_us(5);
00148         #endif
00149         for(int n=0; n<2048; n++)
00150         {
00151             #ifndef FS_ONLY
00152             sdi_write(0x00);
00153                 uLCD.locate(0,13);
00154                 uLCD.printf("... %i", n);
00155             #endif
00156         }
00157 ////////////////////////////////////////////////////////////////////////   
00158         fclose(mp3_file);
00159             XDCS=1;
00160             uLCD.locate(0,14);
00161             uLCD.printf("File closing."); 
00162     }
00163     else
00164     {
00165         uLCD.locate(0,2);
00166         uLCD.printf("File not found");
00167     }
00168     return 0;*/
00169 }