File content as of revision 46:162ed3f051b2:

 // Exisiting code in Int_Demo_09May2017_suhasini/sdcard.cpp is deleted and replaced by new code 
 //Nidhin 1/6/2017
 
 
#include "mbed.h"
#include <stdio.h>
#include "SDFileSystem.h"
#include "sdcard.h"
#include "rtc.h"
#include "struct.h"
#include "main.h"
#include "eeprom_pgm.h"
  
  Serial snd(USBTX,USBRX);
  SDFileSystem sd(PTE1, PTE3, PTE2, PTE4, "sd");


  
  FILE *fpecg;  // PPG and ECG File pointers for BP
  FILE *fpppg;  //""          ""
  
  FILE *fpmain; // FILE pointer for main file
  
  FILE *fpbg;   // FILE pointer to BG file
  FILE *fpeecg; // FILE pointer to ECG file
  FILE *fpbp;   // FILE pointer to BP file
  
  FILE *fp;    // FILE pointer for random use
  
  //Function Added on 16/5/2017 by Nidhin
 void sd_open_mainfile(int32_t pid)
 {
 char buffer1[32];
 sprintf(buffer1,"/sd/%d.csv",pid);
  fp = fopen(buffer1,"a"); 
    }
  //------------------------------------------
  
  
  
 /*void sd_open_GLCfile(int pid)     // opening the glc file
 {
     
  char buffer[32];
  char buffer1[32];
  time_t  epoch_time1;
  epoch_time1=rtc_read();
 // strftime(buffer, 32, "GLC_%s", pid);
  
 sprintf(buffer1,"/sd/%d_GLC.csv",pid);   
  fp = fopen(buffer1,"a"); 
  fprintf(fp,"%s\n",ctime(&epoch_time1) );  //writing the date, time into the file
  
 
 }   */
 
  void sd_open_GLCfilee(uint32_t pid)    // only opening the glc file after entering TEST screen
 {
  char buffer1[32];
  sprintf(buffer1,"/sd/%d_GLC.csv",pid);
  fpbg = fopen(buffer1,"a"); 
  fclose(fpbg);
 } 
 
 
  void sd_open_ECGfilee(uint32_t pid)          // only opening the ECG file after entering TEST screen
 {
     
  char buffer1[32];
  sprintf(buffer1,"/sd/%d_ECG.csv",pid);
  fpeecg = fopen(buffer1,"a"); 
  //fclose(fpeecg);
 
 } 
 
 
void sd_open_BPfilee(uint32_t pid)          // only opening the BP file after entering TEST screen
 {
     
 
  char buffer1[32];
  sprintf(buffer1,"/sd/%d_BP.csv",pid);
  fpbp = fopen(buffer1,"a"); 
  //fprintf(fp,"PATIENT ID %d\n",pid );        Not required in new code as writing in hex
 fclose(fpbp);
 } 
  
 void sd_write (int value)      // writing data into the file
 {
    fprintf(fp,"%d\n", value);
 }
 
 
uint8_t sd_open_read(uint32_t pid)          // opening the file for read    // CHNAGED to return value
 {
     
  char buffer1[32];
   sprintf(buffer1,"/sd/%d.csv",pid);
  fp = fopen(buffer1,"r"); 
  if (fp==NULL)
  {
      snd.printf("no");
      return 0;
      }
      
      else 
      {
          snd.printf("yes");
          return 1;
          }
 }
 
 void sd_read(uint32_t  *v1, uint16_t size)          //reading the data from the openend file
 {
     fread(v1,sizeof(v1),size,fp);
 }

void setpos()
{
     //fseek ( fp , 1 , SEEK_SET );
     rewind (fp);
}

void setpos1(uint32_t position)
{
     fseek ( fp , position, SEEK_SET );
     //rewind (fp);
}


uint32_t file_size()    
   {
     int file_length;
     fseek (fp, 0, SEEK_END);
     file_length=ftell(fp);
     file_length=sizeof(char)*file_length;
        rewind(fp);
     return   file_length;
     }  
     
     
uint32_t file_size1()    
   {
     int file_length;
    // fseek (fp, 0, SEEK_END);

     file_length=ftell(fp);
      // file_length=sizeof(char)*file_length;
      //  rewind(fp);
     return   file_length;
     }  
  



 
     void sd_read1(BLEMsg_info &f)
{
     fread(&f,sizeof(BLEMsg_info),1,fp);
      //fscanf(fp,"%08x",&v1);
}
 
 
 
 
 
 
 
 
 
 //------------------------------------------------------
  
//FILE *sd_BP_ecgwrite (int value)      // writing data into the file NIDHIN
FILE *sd_BP_ecgwrite (uint32_t *fpdrum11)      // writing data into the file NIDHIN  
  {
        fwrite(fpdrum11,sizeof(uint32_t),1, fpecg); //Change by Nidhin 30/5/2017 Direct writing to SD card. Org Val 64
        return fpecg;
  }
    
FILE* sd_BP_ppgwrite (uint32_t *fpdrum21)      // //Change by Nidhin 30/5/2017 Direct writing to SD card.
  {
       fwrite(fpdrum21,sizeof(uint32_t),1, fpppg); //Change by Nidhin 30/5/2017 Direct writing to SD card. OR Val 64
    return fpppg;
  }
  //-----------------------------------------------SD Read
  
  void sd_reopen_BPfilee(uint32_t pid)          // only opening the BP file after entering TEST screen
 {
     
 
  char buffer1[32];
  sprintf(buffer1,"/sd/%d_BP.csv",pid);
  fp = fopen(buffer1,"r"); 
  //fprintf(fp,"PATIENT ID %d\n",pid );
 
 
 } 
  //-------------------------------------------------


//---------------------------------------


   void sd_open_BP_ECGfile(uint32_t pid)         
 {
     
  //char buffer[32];
  char buffer1[32];
  //time_t  epoch_time1;
  //epoch_time1=rtc_read();
  // strftime(buffer, 32, "ECG_%d", pid);
  
  sprintf(buffer1,"/sd/%d_BP_ECG.csv",pid);
  fpecg = fopen(buffer1,"a"); 
  if (fpecg == NULL)
  {
      exit(1);
  }   
  //fprintf(fpecg,"%s\n",ctime(&epoch_time1) );
  
 } 
 
  
   void sd_open_BP_PPGfile(uint32_t pid)         
 {
     
  char buffer1[32];
  //time_t  epoch_time1;
  //epoch_time1=rtc_read();
  // strftime(buffer, 32, "ECG_%d", pid);
  
  sprintf(buffer1,"/sd/%d_BP_PPG.csv",pid);
  fpppg = fopen(buffer1,"a"); 
  if(fpppg == NULL)
  {
            exit(1);
  }
  
  //fprintf(fpppg,"%s\n",ctime(&epoch_time1) );
  
 } 
  
  
  
  //--------------------------------------------------
  
//FUNCTIONS TO CLOSE FILES
//__________________________________________________  
void sd_close()            //close the file with fp
  {
   
      fclose(fp);
   }
//______________________________________________________   
 void sd_close_ecg()          // Closes ECG file pinted by fpeecg
 {
   
      fclose(fpeecg);
 }
//______________________________________________________
 void sd_close_glc()          // Closes GLC file pinted by fpbg
 {
   
      fclose(fpbg);
 }
 //_____________________________________________________
 
 
 
 
 
 
//fread(buffer, 1, size, fp)
//fwrite(&buffer, ,   
 //----------------------------------------------------28/4/2017---------------------------------
 //----------------------------------------------------------------------------------------------
 
 
 
  //------- FUNCTION TO CREATE SINGLE BP FILE --------2/5/2017 (NIDHIN)---------------//
 void create_single_BPfile(uint32_t pid)
{
    
    //int ecgbuf[64] = {0};
    //uint32_t ppgbuf[64] = {0};
    
    char buffer3[32];
    sprintf(buffer3, "/sd/%d_BP.csv", pid);
    fpbp = fopen(buffer3, "a");                   // Opens BP file with FILE pointer fpbp in APPEND mode

    //buffer1[32] = ""; 
    sprintf(buffer3, "/sd/%d_BP_ECG.csv", pid);   
    fpecg = fopen(buffer3, "r");                  // Opens ECG file of BP with FILE pointer fpecg in READ mode

    //char buffer1[32] = "";
    sprintf(buffer3, "/sd/%d_BP_PPG.csv", pid);
    fpppg = fopen(buffer3, "r");                  // Opens PPG file of BP with FILE pointer fpppg in READ mode

    for(int i=0; i<16; i++)
    {
    int ecgbuf[64] = {0} ;
    fread(ecgbuf, sizeof(uint32_t), 64, fpecg);
    fwrite(ecgbuf, sizeof(uint32_t), 64, fpbp);   // Copy ECG data of BP into BP file
    }

    for(int i=0; i<26; i++)
    {
    int ppgbuf[64] = {0} ;
    fread(ppgbuf, sizeof(uint32_t), 64, fpppg);
    fwrite(ppgbuf, sizeof(uint32_t), 64, fpbp);  // Copy PPG data of BP into BP file
    }

    fclose(fpecg);                                  // Closes the ECG file of BP
    fclose(fpppg);                                  // Closes the PPG file of BP
    fclose(fpbp);                                   // Closes the BP file

    //char buffer1[32] = "";
    int status = 1 ;
    sprintf(buffer3, "/sd/%d_BP_ECG.csv", pid);
    status = remove(buffer3);                         //Removes ECG file of BP and updates status with 0 if successful
    
    
    if( status == 0 )
        snd.printf("\nECG file delete : Successful");   // Checks for SUCCESS
    else 
        snd.printf("\nECG file delete : UnSuccessful");
   
    
    //char buffer1[32] = "";
    status = 1 ;
    sprintf(buffer3, "/sd/%d_BP_PPG.csv", pid);
    status = remove(buffer3);                           //Removes PPG file of BP and updates status with 0 if successful
    
    if( status == 0 )
        snd.printf("\nPPG file delete : Successful");   // Checks for SUCCESS
    else 
        snd.printf("\nPPG file delete : UnSuccessful");
       
}



//Creating strcuture file Common to All Functions
void structure_file(BLEMsg_info *ptr, uint32_t pid)
{
    char buffer3[32];
    sprintf(buffer3, "/sd/%d.csv", pid);            //Printing file path to the buffer
    if(get_filecreated_status() == true)                    //if file created open in append mode
    {
        fpmain = fopen(buffer3, "a");               // open the file PID.csv with FILE pointer fpmain
        snd.printf("\n Append mode\n");
    }
    else                                            //if file not created, open in write mode
    {
        fpmain = fopen(buffer3, "w");               // open the file PID.csv with FILE pointer fpmain 
        snd.printf("\n Write mode\n"); 
    }    
        
fwrite(ptr, sizeof(uint8_t),26, fpmain );   // writing the Structure into the file
fclose(fpmain);                             // Close File
}

//Copy Data into file.

void bpfile_mainfile(uint32_t pid)                       //Copy data of bp file to main
{
    char buffer3[32];
    sprintf(buffer3, "/sd/%d.csv", pid);
    fpmain = fopen(buffer3, "a");                   // Opens Main file with FILE pointer "fpmain" in APPEND mode
    
    sprintf(buffer3, "/sd/%d_BP.csv", pid);
    fpbp = fopen(buffer3, "r");                     // Opens BP file with FILE pointer "fpbp" in READ mode
    
    
    for(int i=0; i<21; i++)
    {
    int bigbuf[128] = {0} ;
    fread(bigbuf, sizeof(uint32_t), 128, fpbp);
    fwrite(bigbuf, sizeof(uint32_t), 128, fpmain);  // Copy BP raw data into main file 
    }
    fclose(fpbp);                                   // Close BP file
    fclose(fpmain);                                 // Close Main File
    
    int success;
    sprintf(buffer3, "/sd/%d_BP.csv", pid);
    success = remove(buffer3);                      // Should return zero on success
}

//------------New function added to print ECG data to Sd card using fwrite
void sd_ecgwrite(uint32_t *ecg_ptr)
{
   fwrite(ecg_ptr, sizeof(int), 1, fpeecg); 
}


//------------ Function to write ECG data to main file
void ecgfile_mainfile(uint32_t pid)
{
    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");
    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, "r");
    fclose(fpeecg);  
                              // File is closed
    int success;
    sprintf(buffer3, "/sd/%d_ECG.csv", pid);
    success = remove(buffer3); 
    snd.printf("DELETE STATUS = %d\n", success); 
}


//---------------------- Function to write GLC data to GLC file
void sd_glcwrite(uint32_t *glc_ptr, uint32_t pid)
{
    char buffer3[32];
    sprintf(buffer3, "/sd/%d_GLC.csv", pid);       
    fpbg = fopen(buffer3, "a");  
    
    fwrite(glc_ptr, sizeof(uint32_t), 2, fpbg);
    fclose(fpbg);
   
}

// --------------------------Fuinction to write GLC data to Main file

void glcfile_mainfile(uint32_t pid)
{
    char buffer3[32];
    sprintf(buffer3, "/sd/%d.csv", pid);       
    fpmain = fopen(buffer3, "a");             // Main File is opened in Append mode
    
    sprintf(buffer3, "/sd/%d_GLC.csv", pid);  // BG file is opened in read mode
    fpbg = fopen(buffer3, "r");
    
    for(int i=0; i<1; i++)
    {
    int bigbuf[2] = {0} ;
    fread(bigbuf, sizeof(int),2 , fpbg);      
    fwrite(bigbuf, sizeof(int), 2, fpmain);
    }
    fclose(fpbg);                               // Both files are Closed
    fclose(fpmain);
    
    int success;
    sprintf(buffer3, "/sd/%d_GLC.csv", pid);  
    success = remove(buffer3);                           // GLC file is deleted
}


void delete_subfiles(uint32_t pid)
{
    char buffer3[32];  
    int success1 , success2, success3;
    success1 = 1 ;
    sprintf(buffer3, "/sd/%d_BP.csv", pid);
    success1 = remove(buffer3);                           //Removes PPG file of BP and updates status with 0 if successful
    
    if( success1 == 0 )
        snd.printf("\nBP file delete : Successful");   // Checks for SUCCESS
    else 
        snd.printf("\nBP file delete : UnSuccessful");

    success2 = 1 ;
    sprintf(buffer3, "/sd/%d_GLC.csv", pid);
    success2 = remove(buffer3);                           //Removes GLC file and updates status with 0 if successful
    
    if( success2 == 0 )
        snd.printf("\nGLC file delete : Successful");   // Checks for SUCCESS
    else 
        snd.printf("\nGLC file delete : UnSuccessful");

    success3 = 1 ;
    sprintf(buffer3, "/sd/%d_ECG.csv", pid);
    success3 = remove(buffer3);                           //Removes ECG file and updates status with 0 if successful
    
    if( success3 == 0 )
        snd.printf("\nECG file delete : Successful");   // Checks for SUCCESS
    else 
        snd.printf("\nECG file delete : UnSuccessful");

}


void del_ppg_ecg_BPfile(uint32_t pid)
{
    int status = 1 ;
    char buffer3[32];
    sprintf(buffer3, "/sd/%d_BP_ECG.csv", pid);
    status = remove(buffer3);                         //Removes ECG file of BP and updates status with 0 if successful
        
    if( status == 0 )
        snd.printf("\n temp ECG file delete for error condition: Successful");   // Checks for SUCCESS
    else 
        snd.printf("\n temp ECG file delete for error condition: UnSuccessful");
   
    
    //char buffer1[32] = "";
    status = 1 ;
    sprintf(buffer3, "/sd/%d_BP_PPG.csv", pid);
    status = remove(buffer3);                           //Removes PPG file of BP and updates status with 0 if successful
    
    if( status == 0 )
        snd.printf("\n temp PPG file delete for error condition: Successful");   // Checks for SUCCESS
    else 
        snd.printf("\n temp PPG file delete for error condition: UnSuccessful");
       
}

void sd_read(uint32_t  *pid_btpid)          //reading the data from the openend file
 {
    FILE *fp;
    uint32_t pid[2]={1,1};
    fp= fopen("/sd/pid_info.txt","r");
     if (fp==NULL)
    {
       fp= fopen("/sd/pid_info.txt","w");
       fwrite(&pid, sizeof(uint32_t),2,fp);
       fclose(fp);
       fp= fopen("/sd/pid_info.txt","r");
    }
     
     fread(pid_btpid,sizeof(pid_btpid),2,fp);
     fclose(fp);
     
 }
 
 
void sd_write(uint32_t  *pid_btpid)          //reading the data from the openend file
{
     FILE *fp;
     fp= fopen("/sd/pid_info.txt","w");
     fwrite(pid_btpid,sizeof(pid_btpid),2,fp);
     fclose(fp);
     
}