#include <avr/io.h>
#include <stdio.h>
#include "i2cmaster.h"

#define hih9131w  0x4E	//write mode
#define hih9131r  0x4F	//read mode

void waterSense(void);
void THSense(void);

unsigned char humL;
unsigned char humH;
unsigned short hum;
unsigned char tempL;
unsigned char tempH;
unsigned short temp;
unsigned short humN;
unsigned short tempN;


int main(void)
{
		i2c_init();                             // initialize I2C library
		while(1) {
			THSense();
		}
}

void THSense(void) {
	i2c_start_wait(hih9131w);				// measurement request
	i2c_stop();                             // set stop condition = release bus
	i2c_start_wait(hih9131r);       		// set device address and read mode
	humH = i2c_readAck();                   // read one byte from EEPRO M
	humL = i2c_readAck();
	tempH = i2c_readAck();
	tempL = i2c_readNak();
	i2c_stop();
	hum = (humH << 8) + humL;
	temp = (tempH << 8) + tempL;
	hum = (hum << 2);
	hum = (hum >> 2);
	temp = (temp >> 2);
	humN = (hum/16382.0) * 100;
	tempN = ((temp/16382.0) * 165) - 40;
}