Diff: sdcard.cpp

Revision:

22:ffa88619551d

Parent:

20:7c64e6ecad76

Child:

24:d992ee8369f4

--- a/sdcard.cpp	Wed Jun 21 08:39:10 2017 +0000
+++ b/sdcard.cpp	Fri Jun 23 07:25:24 2017 +0000
@@ -34,7 +34,7 @@
   int pbp = 0;
   
   //Function Added on 16/5/2017 by Nidhin
- void sd_open_mainfile(int pid)
+ void sd_open_mainfile(int32_t pid)
  {
  char buffer1[32];
  sprintf(buffer1,"/sd/%d.csv",pid);
@@ -60,7 +60,7 @@
  
  }   */
  
-  void sd_open_GLCfilee(int pid)    // only opening the glc file after entering TEST screen
+  void sd_open_GLCfilee(int32_t pid)    // only opening the glc file after entering TEST screen
  {
   char buffer1[32];
   sprintf(buffer1,"/sd/%d_GLC.csv",pid);
@@ -85,7 +85,7 @@
  
  } 
  */
-  void sd_open_ECGfilee(int pid)          // only opening the ECG file after entering TEST screen
+  void sd_open_ECGfilee(int32_t pid)          // only opening the ECG file after entering TEST screen
  {
      
   char buffer1[32];
@@ -110,7 +110,7 @@
   fprintf(fp,"%s\n",ctime(&epoch_time1) );
  } */
 
-void sd_open_BPfilee(int pid)          // only opening the BP file after entering TEST screen
+void sd_open_BPfilee(int32_t pid)          // only opening the BP file after entering TEST screen
  {
      
  
@@ -218,7 +218,7 @@
   }
   //-----------------------------------------------SD Read
   
-  void sd_reopen_BPfilee(int pid)          // only opening the BP file after entering TEST screen
+  void sd_reopen_BPfilee(int32_t pid)          // only opening the BP file after entering TEST screen
  {
      
  
@@ -235,7 +235,7 @@
 //---------------------------------------
 
 
-   void sd_open_BP_ECGfile(int pid)         
+   void sd_open_BP_ECGfile(int32_t pid)         
  {
      
   //char buffer[32];
@@ -255,7 +255,7 @@
  } 
  
   
-   void sd_open_BP_PPGfile(int pid)         
+   void sd_open_BP_PPGfile(int32_t pid)         
  {
      
   char buffer1[32];
@@ -307,7 +307,7 @@
  //------------------------------------------  
  //REOPEN FUNCTIONs for reading data Nidhin
  
- int sd_BP_ECGMAX(int pid)         
+ int sd_BP_ECGMAX(int32_t pid)         
  {
      
   char buffer1[32];
@@ -346,7 +346,7 @@
  
  // Function to calculate PPG MAx and location
  
-   int sd_BP_PPGMAX(int pid)         
+   int sd_BP_PPGMAX(int32_t pid)         
  {
      
   char buffer1[32];
@@ -394,7 +394,7 @@
  
  
   //------- FUNCTION TO CREATE SINGLE BP FILE --------2/5/2017 (NIDHIN)---------------//
- void create_single_BPfile(int pid)
+ void create_single_BPfile(int32_t pid)
 {
     
     //int ecgbuf[64] = {0};
@@ -455,7 +455,7 @@
 }
 
 //Creating strcuture file Common to All Functions
-void structure_file(BLEMsg_info *ptr, int pid)
+void structure_file(BLEMsg_info *ptr, int32_t pid)
 {
 char buffer3[32];
 sprintf(buffer3, "/sd/%d.csv", pid);        //Printing file path to the buffer
@@ -466,7 +466,7 @@
 
 //Copy Data into file.
 
-void bpfile_mainfile(int pid)                       //Copy data of bp file to main
+void bpfile_mainfile(int32_t pid)                       //Copy data of bp file to main
 {
     char buffer3[32];
     sprintf(buffer3, "/sd/%d.csv", pid);
@@ -498,7 +498,7 @@
 
 
 //------------ Function to write ECG data to main file
-void ecgfile_mainfile(int pid)
+void ecgfile_mainfile(int32_t pid)
 {
     char buffer3[32];
     sprintf(buffer3, "/sd/%d.csv", pid);       
@@ -528,7 +528,7 @@
 
 
 //---------------------- Function to write GLC data to GLC file
-void sd_glcwrite(uint32_t *glc_ptr, int pid)
+void sd_glcwrite(uint32_t *glc_ptr, int32_t pid)
 {
     char buffer3[32];
     sprintf(buffer3, "/sd/%d_GLC.csv", pid);       
@@ -541,7 +541,7 @@
 
 // --------------------------Fuinction to write GLC data to Main file
 
-void glcfile_mainfile(int pid)
+void glcfile_mainfile(int32_t pid)
 {
     char buffer3[32];
     sprintf(buffer3, "/sd/%d.csv", pid);       
@@ -565,7 +565,7 @@
 }
 
 
-void delete_subfiles(int pid)
+void delete_subfiles(int32_t pid)
 {
     char buffer3[32];  
     int success1 , success2, success3;
@@ -596,4 +596,149 @@
     else 
         snd.printf("\nECG file delete : UnSuccessful");
 
+}
+
+
+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