Read various sensor values from an Esplora board and print them to serial port.

EsploraSensors.ino

/*
** Read various sensor values and print them to serial port.
**
** Thomas Conté @tomconte
*/

#include <Esplora.h>

int lightMin = 1023;        // minimum sensor value
int lightMax = 0;           // maximum sensor value
boolean calibrated = false;  // whether the sensor's been calibrated yet

void setup()
{
  Serial.begin(9600);      // initialize serial communications with your computer
} 

void loop()
{
  if (Esplora.readButton(1) == LOW) {
    calibrate();
  }
  
  int celsius = Esplora.readTemperature(DEGREES_C);
  int loudness = Esplora.readMicrophone();
  int light = Esplora.readLightSensor();

  Serial.print("T:");
  Serial.print(celsius);

  Serial.print("_");

  Serial.print("M:");
  Serial.print(loudness);
  
  Serial.print("_");

  Serial.print("L:");
  Serial.print(light);
  
  Serial.println();
  
  // wait a second before reading again:
  delay(1000);
}

// From EsploraLightCalibrator sample

void calibrate() {
  // tell the user what do to using the serial monitor:
  Serial.println("While holding switch 1, shine a light on the light sensor, then cover it.");

  // calibrate while switch 1 is pressed:
  while(Esplora.readButton(1) == LOW) {
    // read the sensor value: 
    int light  = Esplora.readLightSensor();

    // record the maximum sensor value:
    if (light > lightMax) {
      lightMax = light;
    }

    // record the minimum sensor value:
    if (light < lightMin) {
      lightMin = light;
    }
    // note that you're calibrated, for future reference:
    calibrated = true;
  }
}