lightH = lightH << 4;

	mantissa = lightH | lightL;

	//mantissa = mantissa << 4;

	//mantissa = mantissa >> 4;

	//lux = (pow(2, exponent) * (float)(mantissa * 0.045));

	lux = (float)(pow(2,exponent) * mantissa) * 0.045;

	// FOR BOTH BYTES:

	// light = light << 4;

	// light = light | (0x0F & i2c_read(LIGHT_ADDR, 0x04));  //  This can be used to read in the 4 LSBs from the second register

	// exponent = 8xE3 + 4xE2 + 2xE1 + E0

	// mantissa = 128xM7 + 64xM6 + 32xM5 + 16xM4 + 8xM3 + 4xM2 + 2xM1 + M0

	// light = 2^(exponent)*mantissa*0.045

}

void sensors_readBatt()

{

	batt = ADCH;					// Read battery level from ADC

}

int16_t sensors_getSpiTemp(void)	// Gets spi temperature from variable

{

	return spiTemp;

}

int8_t sensors_getBoardTemp(void)	// Gets board temperature from variable

{

	return boardTemp;

}

int32_t sensors_getPressure(void)	// Gets pressure from variable

{

	return pressure;

}

uint16_t sensors_getHumid(void)			// Gets relative humidity from variable

{

	return humid;

}

uint32_t sensors_getLux(void)		// Gets light from variable

{

	return lux;

}

//possibly uint8_t

{

	return batt;

}

uint32_t sensors_getAltitude(void)

{

	return altitude;

}

/*

 * modules.c

 *

 * Created: 11/9/2012 11:44:22 AM

 *  Author: kripperger

 */ 

 #include <inttypes.h>

 #include <avr/io.h>

 #include <avr/interrupt.h>

 #include "config.h"

 #include <util/delay.h>

 #include "modules.h"

 #include "lib/spi.h"

 #include "lib/i2c.h"

 #include "lib/sensors.h"

 void modules_setup(uint8_t id)

 {

	switch(id)

	{

		case 0:

			modules_generic_setup();

			break;

		case 1:

			modules_sensors_setup();

			break;

		case 2:

			modules_geiger_setup();

			break;

		case 3:

			modules_cameras_setup();

			break;

		default:

			modules_generic_setup();

			break;

	}

 }

 void modules_run(uint8_t id)

 {

	switch(id)

	{

		case 0:

			modules_generic();

			break;

		case 1:

			modules_sensors();

			break;

		case 2:

			modules_geiger();

			break;

		case 3:

			modules_cameras();

			break;

		default:

			modules_generic();

			break;

	}

 }

 void modules_generic_setup()

 {

 }

 void modules_sensors_setup()

 {

	DESELECT_TEMP;

	setup_spi();

	sensors_setupPressure();

 }

 void modules_geiger_setup()

 {

	// Pin setup

	DDRA &= ~(1 << DDA0);	// PA0 is an input

	// Setup for interrupt input on PA0 (PCINT0)

	PCMSK0 |= (1 << PCINT0);	// Enable interrupt for PA0

	PCICR |= (1 << PCIE0);		// Enable ioc section PCIF0

	// Setup for interrupt from Timer2

	ASSR &= ~(1 << EXCLK);	// Disable external clock input (enabling crystal use)

	ASSR |= (1 << AS2);		// Enable timer2 async mode with an external crystal	

	_delay_ms(250);			// Let external 32KHz crystal stabilize

	TCCR2B = 0x05;			// Set the prescaler to 128: 32.768kHz / 128 = 1Hz overflow

	TIFR2 = 0x01;			// Reset timer2 overflow interrupt flag

	TIMSK2 = 0x01;			// Enable interrupt on overflow

	sei();					// Enable all interrupts

 }

 void modules_cameras_setup()

 {

 }

 void modules_generic()

 {

	// Gathers data and performs functions for generic daughter board

 }

 void modules_sensors()

 {

	// Gathers data and performs functions for sensor daughter board

	sensors_readBoardTemp();		//Data Read

	sensors_readSpiTemp();			//Data Read

	sensors_readPressure();			//Data Read

	//sensors_readHumid();			//Data Read

	sensors_readLux();				//Data Read

 }

 void modules_geiger()

 {

	// No data gatering function needed for geiger daughter board

		// This is taken care of in interrupt (See geiger.c)

 }

 void modules_cameras()

 {

	// Gathers data and performs functions for cameras daughter board

 } 

void micro_setup()

{

	// Generic microcontroller config options

	sei();	// Enable interrupts

}

int main(void)

{

	// Initialize		

	micro_setup();			// Generic microcontroller config options

	time_setup();			// Setup loop timer and interrupts (TIMER0)

	led_configure();		// Configure ports and registers for LED operation

	io_configure();			// Configure IO ports and registers

	i2c_init();				// Setup I2C

	serial0_setup();		// Config serial port

	io_readModuleId();

	modules_setup(io_getModuleId());				// Run setup functions for specific module

	//uint8_t test;		//Debug

	//uint8_t test2;	//Debug	

	// Serial output //DEBUG

	char buff[128];							//Buffer for serial output //DEBUG

	serial0_sendString("Starting Slave\r\n");

    while(1)

    {	

		// Master communication

		masterComm_checkParser();

		// Main slave operations

		if ((time_millis() % SENSOR_LOOP) == 0)	// Uses program timer to run every so often. Time interval defined in config.h

		{

			led_on(0);

			sensors_readBoardTemp();	// Read board temperature sensor (Common on all slaves) (Data Read)

			modules_run(io_getModuleId());		// Runs specific module functions (like data reading)

			io_regulateTemp();			// Gets board temperature and enables heater if below threshold

			serial0_sendString(buff); //DEBUG

			_delay_ms(2);		// Delay to prevent the sensor loop from running again before time_millis changes

			led_off(0);

			led_off(2);

		}

    }

	return 0;

}

		/********Examples of data reading and getting******************

		x = geiger_getCpm();				//Data get

		x = sensors_getSpiTemp();			//Data get

		x = sensors_getBoardTemp();			//Data get

		sensors_readSpiTemp();				//Data Read

		sensors_readBoardTemp();			//Data Read

		led_output(0xFF);					//Output value to LED array

		i2c_write(RTC_ADDR, 0x05, 0x3A);	//i2c Write Example

		PORTA &= ~(1 << PA1);	//OFF

		PORTA |= (1 << PA1);	//ON

		PORTB ^= (1 << PB0);	//Toggle

		sprintf(buff, "log: %u,%u,%u,%u\r\n", temp,temp2,temp3,temp4);

		serial0_sendString(buff);

		**************************************************************/