#include "contiki.h"
#include "dev/light-sensor.h"
#include "dev/sht11-sensor.h"
#include <stdio.h> /* For printf() */

float getTemperature(void)
{
  int tempData;

  // NOTE: You only need to use one of the following
  // If you run the code in Cooja Simulator, please remove the second one
  //tempData = sht11_sensor.value(SHT11_SENSOR_TEMP_SKYSIM); // For Cooja Sim
  tempData = sht11_sensor.value(SHT11_SENSOR_TEMP); // For XM1000 mote

  float temp = tempData; // you need to implement the transfer function here
  return temp;
}

float getLight(void)
{
  int   lightData = light_sensor.value(LIGHT_SENSOR_PHOTOSYNTHETIC);
  float light = lightData; // you need to implement the transfer function here
  return light;
}


/*---------------------------------------------------------------------------*/
PROCESS(sensor_reading_process, "Sensor reading process");
AUTOSTART_PROCESSES(&sensor_reading_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(sensor_reading_process, ev, data)
{
  static struct etimer timer;
  PROCESS_BEGIN();
  etimer_set(&timer, CLOCK_CONF_SECOND/4); // you need to put the correct 
                                           // timer setting here
  SENSORS_ACTIVATE(light_sensor);
  SENSORS_ACTIVATE(sht11_sensor);

  static int counter = 0;
  while(1)
  {
    PROCESS_WAIT_EVENT_UNTIL(ev=PROCESS_EVENT_TIMER);

    float temp = getTemperature();
    float light_lx = getLight();

    printf("%d\n", ++counter); // you should also print the temperature
                               // and light intensity here

    etimer_reset(&timer);
  }
  PROCESS_END();

}
/*---------------------------------------------------------------------------*/