#include "LittleFS.h"


// Calibration
// HF mV Flux mVs
// 230  2.36
// 665  7.09
// 899  9.58
// 778  830
LittleFSConfig cfg;
File f;




void save_params(void)
{
  int i;
  f=LittleFS.open("/calibr.dat", "w");
  f.println(device,6); 
  for (i=0;i<4;i++)
    f.println(da_zero[i],6);
  for (i=0;i<4;i++)
    f.println(da_gain[i],6);
  for (i=0;i<8;i++)
    f.println(ad_zero[i],6);
  for (i=0;i<8;i++)
    f.println(ad_gain[i],6);
  for (i=0;i<16;i++)
    f.println(filter[i],6);
  for (i=0;i<16;i++)
    f.println(amp[i]);
  f.println(offset_zero_0);
  f.close();
}

void start_littlefs(void)

{
   if(!LittleFS.begin())
      {
        printf("An Error has occurred while mounting LittleFS\n");
        save_params();
      }
}

double get_eprom_double(void)
{
  double d;
  String s=f.readStringUntil('\n');
  return s.toDouble();
}



void read_params(void)
{
  int i;
  f=LittleFS.open("/calibr.dat", "r");
  if (!f) 
    {
      printf("No calibration file exist\n");
      save_params();
      return;
    }
  printf("Reading calibr data %d\n",f.size());
  device=(int) get_eprom_double();
  for (i=0;i<4;i++)
    da_zero[i]=get_eprom_double();
  for (i=0;i<4;i++)
    da_gain[i]=get_eprom_double();
  for (i=0;i<8;i++)
    ad_zero[i]=get_eprom_double();
  for (i=0;i<8;i++) 
    ad_gain[i]=get_eprom_double();
  for (i=0;i<16;i++)
      filter[i]=get_eprom_double();
  for (i=0;i<16;i++)
      amp[i]=(int) get_eprom_double();
  offset_zero_0=get_eprom_double();
  offset_auto=offset_zero_0/10;
  //printf("position %d\n",f.position());
  f.close();
  
}