main.cpp

00001 #include "mbed.h"
00002 #include "ADSlib/ADSlib.h"
00003 #include "SDFileSystem/SDFileSystem.h"
00004 
00005 /***********************PROTOTYPING AND SETTINGS*********************/
00006 DigitalOut CLKSEL(p8);
00007 DigitalOut ADS1CS(p16);
00008 DigitalOut ADS2CS(p17);
00009 DigitalIn MULT_ADS(p18);
00010 DigitalOut PWDN(p10);
00011 DigitalOut RESETpin(p9);
00012 DigitalOut STARTpin(p19);
00013 DigitalOut waitled(LED1);
00014 DigitalIn DRDY(p15);
00015 SPI spi(p5,p6,p7);
00016 SDFileSystem sd(p11,p12,p13,p14,"sd");
00017 signed char Input_Data_Stream[];
00018 uint16_t Input_modified[];
00019 LocalFileSystem local("local");
00020 /********************************************************************/
00021 
00022 int main()                          // main call
00023 {
00024     /********************POWER ON SEQUENCING *****************************/
00025     waitled =1;
00026     wait_ms(500);                   //boot up time
00027 
00028     ADS1CS=1;                       //deselect ADS1
00029     spi.format(8,3);                //spi setttings
00030     spi.frequency(1000000);         //spi settings
00031 
00032     CLKSEL = 1;                     //clock signal (internal) setup Frequency = 2.048 MHz
00033     ADS1CS= 0;
00034     spi.write(W_CONFIG1);
00035     spi.write(0x00);
00036     spi.write(0x64);
00037     ADS1CS =1;
00038 
00039     PWDN = 1;
00040     RESETpin = 1;
00041     wait(1);                        //Delay for Power-On Reset and Oscillator Start-Up
00042 
00043     ADS1CS= 0;                      // intial reset command for device reset and register setting clean up
00044     spi.write(RESET);
00045     pause_clk(18);
00046 
00047 
00048     spi.write(SDATAC);              // device boots up in RDATAC mode set it in SDATAC mode
00049     pause_clk(4);
00050 
00051 
00052     spi.write(W_CONFIG3);           // internal reference stup and enable
00053     spi.write(0x00);
00054     spi.write(0xC0);
00055 
00056     /***************POWER ON SEQUENCING COMPLETE**************************/
00057 
00058 
00059     /**************CHANNEL SETTINGS***************************************/
00060     spi.write(W_CHnSET);
00061     spi.write(0x07);
00062     spi.write((int)ADS_Default_Channel_Settings);
00063     ADS1CS = 1;
00064     /*********************************************************************/
00065 
00066     /*****************************CONVERSION BEGINS**********************/
00067     STARTpin= 1;
00068 
00069     //write main superloop and rdatac mode and enable dout conversion AND SETUP FILESTORAFGE
00070     Timer tensec;
00071     tensec.start();
00072     
00073     
00074     
00075     
00076     if (MULT_ADS = 0) {
00077         while(tensec.read()<=10) {
00078             spi.write(RDATAC);
00079             wait_ms(10);
00080             while(DRDY) {}
00081             ADS1CS= 0;
00082             for (int i=0; i<=18; i++) {
00083                 Input_Data_Stream[i] = spi.write(0x00);
00084             }
00085             int k= 0;
00086             int j= 4;
00087             for(int i=3; i<=17; i++) {
00088                 Input_modified[k]=Input_Data_Stream[i]<<8 + Input_Data_Stream[j];
00089                 j++;
00090                 k++;
00091             }
00092             Input_modified[8]=Input_modified[7]-Input_modified[6];
00093             Input_modified[9]=-(Input_modified[7]+Input_modified[6]/2);
00094             Input_modified[10]=((2*Input_modified[6])-Input_modified[7])/2;
00095             Input_modified[11]=((2*Input_modified[7])-Input_modified[6])/2;
00096             spi.write(SDATAC);
00097 
00098             /***********************FILE IO PROCEDURE ON LOCAL STORAGE******************/
00099             FILE* file = fopen("local/logfile.txt","w");
00100             for (int k =0; k<12; k++) {
00101                 fputc(Input_modified[k],file);
00102             }
00103             //dont forget to
00104             //fclose(file);
00105             /***************************************************************************/
00106 
00107 
00108 ///////////////////////////OR///////////////////////////////////////////////////////////////////////
00109 
00110 
00111             /****************************SD I/O OPERATIONS *****************************/
00112             mkdir("sd/logfiledir",0777);
00113             FILE* file1 = fopen("sd/logfiledir/logfile.txt","w");
00114             for (int k =0; k<12; k++) {
00115                 fputc(Input_modified[k],file1);
00116             }
00117             //dont forget to
00118             //fclose(file1);
00119             /***************************************************************************/
00120         }
00121     }
00122     
00123     
00124      if (MULT_ADS = 0) {
00125         while(tensec.read()<=10) {
00126             spi.write(RDATAC);
00127             wait_ms(10);
00128             while(DRDY) {}
00129             ADS1CS= 0;
00130             for (int i=0; i<=18; i++) {
00131                 Input_Data_Stream[i] = spi.write(0x00);
00132             }
00133             int k= 0;
00134             int j= 4;
00135             for(int i=3; i<=17; i++) {
00136                 Input_modified[k]=Input_Data_Stream[i]<<8 + Input_Data_Stream[j];
00137                 j++;
00138                 k++;
00139             }
00140             Input_modified[8]=Input_modified[7]-Input_modified[6];
00141             Input_modified[9]=-(Input_modified[7]+Input_modified[6]/2);
00142             Input_modified[10]=((2*Input_modified[6])-Input_modified[7])/2;
00143             Input_modified[11]=((2*Input_modified[7])-Input_modified[6])/2;
00144             spi.write(SDATAC);
00145 
00146             /***********************FILE IO PROCEDURE ON LOCAL STORAGE******************/
00147             FILE* file = fopen("local/logfile.txt","w");
00148             for (int k =0; k<12; k++) {
00149                 fputc(Input_modified[k],file);
00150             }
00151             //dont forget to
00152             //fclose(file);
00153             /***************************************************************************/
00154 
00155 
00156 ///////////////////////////OR///////////////////////////////////////////////////////////////////////
00157 
00158 
00159             /****************************SD I/O OPERATIONS *****************************/
00160             mkdir("sd/logfiledir",0777);
00161             FILE* file1 = fopen("sd/logfiledir/logfile.txt","w");
00162             for (int k =0; k<12; k++) {
00163                 fputc(Input_modified[k],file1);
00164             }
00165             //dont forget to
00166             //fclose(file1);
00167             /***************************************************************************/
00168         }
00169     }
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00223     tensec.stop();
00224     waitled =0;
00225 }
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