/*
 * lecture des capteurs de temperature LM35
 */
/* -------------------------------------------------- */

#define NBVAL   4
#define DELAI   12000

int   values[NBVAL];

/* -------------------------------------------------- */
void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.print("\n");
  /* XXX */
  /*  changing the voltage reference of the ADC
   *  greatly increase the prcision on the limited
   *  range of our temperatures.
   */
  analogReference(INTERNAL1V1); // Pour Arduino Mega2560
  
  delay(1000);
}
/* -------------------------------------------------- */
void updatevalues(void)
{
  int foo;
  for (foo=0; foo<NBVAL; foo++) {
    values[foo] = analogRead(A0);
    delay(200);
   }
}
/* -------------------------------------------------- */
void sendvalues(void)
{
  int foo;

  Serial.print("T");
  for (foo=0; foo<NBVAL; foo++) {
    Serial.print(" ");
    Serial.print(values[foo]);
    }
  Serial.print("\n");
}
/* -------------------------------------------------- */

void loop() {
  updatevalues();
  sendvalues();
  delay(DELAI);
}

/* -------------------------------------------------- */