Diff: sdcard.cpp

Revision:

26:53ff13a164f3

Parent:

24:d992ee8369f4

Child:

27:907f8ce0025e

--- a/sdcard.cpp	Sun Jul 02 19:22:34 2017 +0000
+++ b/sdcard.cpp	Wed Jul 05 15:36:58 2017 +0000
@@ -491,7 +491,7 @@
 }
 
 //------------New function added to print ECG data to Sd card using fwrite
-void sd_ecgwrite(int *ecg_ptr)
+void sd_ecgwrite(uint32_t *ecg_ptr)
 {
    fwrite(ecg_ptr, sizeof(int), 1, fpeecg); 
 }
@@ -503,27 +503,31 @@
     char buffer3[32];
     sprintf(buffer3, "/sd/%d.csv", pid);       
     fpmain = fopen(buffer3, "a");             // Main File is opened in Append mode
-    
+    snd.printf("opening main file\n");
     sprintf(buffer3, "/sd/%d_ECG.csv", pid);  // ECG file is opened in read mode
     fpeecg = fopen(buffer3, "r");
-    
-    for(int i=0; i<10; i++)
+    snd.printf("opening temp file\n");
+    for(int i=0; i<20; i++) //the loop runs as 20 times of 100 i.e., 2k
     {
     int bigbuf[100] = {0} ;
     fread(bigbuf, sizeof(int),100 , fpeecg);
     fwrite(bigbuf, sizeof(int), 100, fpmain);
     }
+    snd.printf("to close temp file\n");
     fclose(fpeecg);                               // Both files are Closed
+    snd.printf("to come out of main file\n");
     fclose(fpmain);
     
-    /*
+    snd.printf("COPY complete Files Closed\n"); 
+    
     sprintf(buffer3, "/sd/%d_ECG.csv", pid);  // ECG file is opened in write mode to empty the file
-    fpeecg = fopen(buffer3, "w");
-    fclose(fpecg);  
-    */                           // File is closed
+    fpeecg = fopen(buffer3, "r");
+    fclose(fpeecg);  
+                              // File is closed
     int success;
     sprintf(buffer3, "/sd/%d_ECG.csv", pid);
-    success = remove(buffer3);  
+    success = remove(buffer3); 
+    snd.printf("DELETE STATUS = %d\n", success); 
 }
 
 
@@ -599,146 +603,3 @@
 }
 
 
-uint16_t heart_cal(int pid)   // Function created on 10/6/17, Function modified on 13/6/17 Nidhin
-// Objective ti understand how file pointers work 
-{
-    //FILE *fpeecg2;       // Secondary File
-    
-    char buffer3[32];
-    
-    
-    int32_t buff1[1] ; int32_t buff2[2]; int32_t buff3[1];  // Buff 12 &3 Stores sample 1, 2 & 10th sample
-    int32_t fppos;  // Variable to hold pointer position
-    
-    int32_t val1_val10;  // VARIABLE holding difference of sample 1 and 10 
-    
-    int32_t peakpos[10]; //array taht holds the peak position //Changed to 10 (ORG 4) Nidhin 20/6/17
-     int32_t peakval[10]; // Array holding peak values  ////Changed to 10 (ORG 4) Nidhin 20/6/17
-     int32_t pk = 0;     // Variable to access array
-    
-    int32_t no_of_peaks =0;  // Variable holding toatl number of peaks ; increments on each peak
-    
-    float hrt_rate;         // Heart rate in float varoable
-    uint16_t heart_rate;    // Heart rate to be type casted to int
-    
-    sprintf(buffer3, "/sd/%d_ECG.csv", pid);    // For opening a specific file    
-    fpeecg = fopen(buffer3, "r");
-    
-    /*
-    fppos = ftell(fpeecg);
-    snd.printf("Main pointer is at  Position : %d \n", fppos);
-    */
-    int32_t m =0;       // Variable to move the file pointer in fseek function Org Static Nidhin 22/6/17
-    int32_t i =0;      // Variable to count sample number, ORG Static Nidhin 22/6/17
-    
-    for ( i = 0; i < 1000;  i++)   // for 1024 samples in file
-    {
-    rewind(fpeecg);               // Go to satrt of file each time
-    fseek(fpeecg, m, SEEK_CUR);   // Update the count value according to move pointer
-        
-    fread(buff1, sizeof(int32_t), 1, fpeecg);  // Read sample 1
-    //fpeecg2 = fpeecg;
-    fread(buff2, sizeof(int32_t), 1, fpeecg);  // Read Sample 2
-    
-    int32_t n = 28;       // Variable to move to 10th sampple from current
-    
-       
-    fseek(fpeecg, n, SEEK_CUR);   // Moving to tenth sample  
-    fread(buff3, sizeof(int32_t), 1, fpeecg);  // Read 3rd sample
-    
-     snd.printf("buff1 = %d , buff2 = %d, buff3 = %d\n",buff1[0],buff2[0],buff3[0] ); //Test  Value heald by buffer each round
-    
-    val1_val10 = buff1[0] - buff3[0];   // Difference of sample 1 and 10
-    
-    if(buff1[0] > buff2[0] && val1_val10 > 10000)   // Condition for -ve gradient and difference of 10000
-    {
-        peakpos[pk] = i;              // Peak detected sample number updated in array
-        peakval[pk] = buff1[0];       // Peak value updated in array
-        pk++;                         // Array pointer incremented
-        i = i+120;                     // i incremented to 120 for next 120 samples 
-        no_of_peaks = no_of_peaks + 1;  // no. of peaks incremented
-        //fseek(fpeecg, 480, SEEK_CUR);   // push the pointer to 
-        //fppos = ftell(fpeecg);     Commenetd Nidhin 20/6/17
-        //snd.printf("in if : The Pointer is moved to positon %d\n", fppos);
-        m = m + 480;
-        
-     }
-     
-     else   
-    { 
-       m = m+4;
-       //fpeecg = fpeecg2;
-       //i = i+1;
-       //fppos = ftell(fpeecg); COMMENTED NIDHIN 20/6/17
-       //snd.printf("in Else : The Pointer is moved to positon %d\n", fppos);
-    }
-    }
-    
-    snd.printf("The No: of Peaks is  %d\n", no_of_peaks);
-    
-    for(int j=0; j<no_of_peaks; j++)
-    {
-        snd.printf("The Peak %d, is at %d & value is %d\n",j, peakpos[j], peakval[j]);
-    }
-    
-    // Heart rate calculation
-    //Testing
-    int32_t t_diff;
-    t_diff =  peakpos[1] - peakpos[0];
-    snd.printf("t_diff is %d\n", t_diff);
-    
-    hrt_rate = 60.0/(t_diff*2);
-    //snd.printf("Hear rate in float is %f\n", hrt_rate); COMMENETD NIDHIN 20/6/17
-    
-    hrt_rate = float (hrt_rate*1000);
-    snd.printf("Hear rate in float is %f\n", hrt_rate);
-    
-    heart_rate = uint16_t(hrt_rate + 0.5);
-    snd.printf("The heart rate after type casting is %d\n", heart_rate); 
-
-    /*
-    fppos = ftell(fpeecg);
-    snd.printf("The first data is = %d\n", buff1);
-    snd.printf("The Position after reading first data is = %d\n\n", fppos);
-    
-    fread(buff2, sizeof(int32_t), 1, fpeecg);
-    fppos = ftell(fpeecg);
-    snd.printf("The  Second data is = %d\n", buff2);
-    snd.printf("The Position after reading Second data is = %d\n\n", fppos);
-    
-    fseek(fpeecg, 32,SEEK_CUR); 
-    
-    fread(buff3, sizeof(int32_t), 1, fpeecg);
-    fppos = ftell(fpeecg);
-    snd.printf("The third data is = %d\n", buff3);
-    snd.printf("The Position after reading Second data is = %d\n\n", fppos);
-    
-    fseek(fpeecg, -24,SEEK_CUR); 
-    
-    fread(buff3, sizeof(int32_t), 1, fpeecg);
-    fppos = ftell(fpeecg);
-    snd.printf("The fourth data is = %d\n", buff3);
-    snd.printf("The Position after reading fourth data is = %d\n", fppos);
-        
-    }
-    /*
-    snd.printf("Printing from  500-999\n\n");
-    fread(ecgbufnew, sizeof(int), 500, fpeecg);
-    for(int i=0; i<500; i++)
-    {
-        //snd.printf("%d\n", ecgbufnew[i]);
-    }
-    
-    rewind(fpeecg);
-    fseek(fpeecg, 996, SEEK_SET); // Try modifying with 996 = 249*4 if not working
-    
-    snd.printf("Printing from  250-749\n\n");
-    fread(ecgbufnew, sizeof(int), 500, fpeecg);
-    for(int i=0; i<500; i++)
-    {
-        //snd.printf("%d\n", ecgbufnew[i]);
-    }
-    */
-    fclose(fpeecg);
-    return heart_rate;
-}
\ No newline at end of file