#include "RegulationIntensite.h"

#define __RESISTOR_VALUE__ 10000
#define __ANALOGIN_BR__ A0
#define __ANALOGIN_AR__ A1
#define __PWM_OUT__ 3

float target_curent = 0;

void setup()
{
  pinMode(__ANALOGIN_AR__,0);
  pinMode(__ANALOGIN_BR__,0);
  pinMode(__PWM_OUT__,1);
  Serial.begin(9600);
}

void loop()
{
  static int curent;
  static int pwm_value = 0;
  curent = get_curent();
  if(curent<target_curent*0.9)
    pwm_value++;
  else if(curent>target_curent)
    pwm_value--;
  analogWrite(__PWM_OUT__, pwm_value);
}

float get_curent()
{
  int b = analogRead(__ANALOGIN_BR__);
  int a = analogRead(__ANALOGIN_AR__);
  float dv = (a-b)*(5.0/1023.0) ; //Tension réel
  return dv/(float)__RESISTOR_VALUE__;
}