#ifndef DS1624_H
#define DS1624_H

#include "../global.h"
#include "../configs/ds1624/ds1624.h"

#define DS1624_BASE_ADDR	B01001000
#define DS1624_ADDR			DS1624_BASE_ADDR | (DS1624_A0 * B00000001) | (DS1624_A1 * B00000010) | (DS1624_A2 * B00000100)

/**
 * Sampling configurations
**/
#define DS1624_CONFIG_1SHOT	B00000001
#define DS1624_CONFIG_CONT	B00000000

// Select either 1shot or continous themometer mode
#define DS1624_CONFIGS		DS1624_CONFIG_CONT

// DS1624 Commands
#define DS1624_CONFIG_ADDR	0xAC
#define DS1624_READ_TEMP	0xAA
#define DS1624_SMPL_START	0xEE
#define DS1624_SMPL_STOP	0x22
#define DS1624_ACCESS_MEM	0x17

// Bit masks
#define DS1624_CONFIG_DONE	B10000000

// Size of the EEPROM memory in bytes
#define DS1624_EEPROM_SIZE	255	/* There are actually 256 bytes, but the twi functions only support reading 255 at a time!*/
#define DS1624_EEPROM_PAGE	8

class DS1624
{
	public:
		DS1624();
		
		/**
		 * Init: runs the initializationr outine
		**/
		void		Init(void);
		
		/**
		 * readTemp: reads the temperature and returns
		 * a 16 byte integer in which the 2 highest bytes
		 * are used as (int8_t)degrees and the 2 lowest
		 * are used (uint8_t)decimals
		**/
		uint16_t	readTemp(void);
		
		/**
		 * Start conversion, used at startup in
		 * continous mode, or before a read
		 * in 1shot mode
		**/
		void		startConversion(void);
		
		/**
		 * stopConversion: stops the temperature acquisition
		**/
		void		stopConversion(void);
	/**
	 * EEPROM Support functions
	**/
	#ifdef DS1624_USE_EEPROM
		/**
		 * writeData: writes data to the eeprom
		 * pass it an array of uint8_t containing the values to write, 
		 * the start position (must be %8 == 0) and the length.
		 * The two last can be omnited.
		**/
		void		writeData(uint8_t *, uint8_t, uint8_t);
		void		writeData(uint8_t *, uint8_t);
		void		writeData(uint8_t *);
		
		/**
		 * writeData: writes data to the eeprom
		 * pass it an array of uint8_t to store the result, 
		 * the start position and the length. The two last can be omnited
		**/
		void		readData(uint8_t *, uint8_t, uint8_t);
		void		readData(uint8_t *, uint8_t);
		void		readData(uint8_t *);
	#endif
	private:
	#ifdef DS1624_USE_EEPROM
		/**
		 * writePage: writes a single page (or less) to the eeprom
		 * pass it an array of uint8_t to store the result, 
		 * the start position and the length.
		**/
		void		writePage(uint8_t *, uint8_t, uint8_t);
	#endif
		
};

extern DS1624 TEMP;

#endif