/*****************************
 * Getting max analog values
 * 
 * @author Florent Lemaire
 *
 *****************************/

int analogPin = A3; // define the analog sensor interface
int valAnalog, minVal, maxVal;

FILE serial_stdout;//for quicker stdout instead of many serial.print and println

// Function that printf and related will use to print
int serial_putchar(char c, FILE* f) {
    if (c == '\n') serial_putchar('\r', f);
    return Serial.write(c) == 1? 0 : 1;
}

void setup ()
{
  Serial.begin(9600); // initialize serial communication at 9600 bits per second:
  pinMode (analogPin, INPUT) ; // define input for analog

  // Set up stdout
  fdev_setup_stream(&serial_stdout, serial_putchar, NULL, _FDEV_SETUP_WRITE);
  stdout = &serial_stdout;
}
void loop ()
{
  delay(20);
  valAnalog = analogRead(analogPin);
  maxVal = (valAnalog > maxVal) ? valAnalog : maxVal ;
  minVal = (valAnalog < minVal) ? valAnalog : minVal ;
  
  printf("Min : %d Max : %d Current : %d\n", minVal, maxVal, valAnalog); //serial output in only one line :)
}