/*
ds18b20 lib 0x02

copyright (c) Davide Gironi, 2012

Released under GPLv3.
Please refer to LICENSE file for licensing information.

References:
  + Using DS18B20 digital temperature sensor on AVR microcontrollers
    by Gerard Marull Paretas, 2007
    http://teslabs.com/openplayer/docs/docs/other/ds18b20_pre1.pdf
*/


#ifndef DS18B20_H_
#define DS18B20_H_

#include <avr/io.h>

#define DS18B20_PORT PORTC
#define DS18B20_DDR DDRC
#define DS18B20_PIN PINC
#define DS18B20_BIT PC0

#define DS18B20_CMD_CONVERTTEMP 0x44
#define DS18B20_CMD_RSCRATCHPAD 0xbe
#define DS18B20_CMD_WSCRATCHPAD 0x4e
#define DS18B20_CMD_CPYSCRATCHPAD 0x48
#define DS18B20_CMD_RECEEPROM 0xb8
#define DS18B20_CMD_RPWRSUPPLY 0xb4
#define DS18B20_CMD_SEARCHROM 0xf0
#define DS18B20_CMD_READROM 0x33
#define DS18B20_CMD_MATCHROM 0x55
#define DS18B20_CMD_SKIPROM 0xcc
#define DS18B20_CMD_ALARMSEARCH 0xec

//stop any interrupt on read
#define DS18B20_STOPINTERRUPTONREAD 1


uint8_t ds18b20_reset(void);
void ds18b20_writebit(uint8_t bit);
uint8_t ds18b20_readbit(void);
void ds18b20_writebyte(uint8_t byte);
uint8_t ds18b20_readbyte(void);

extern double ds18b20_gettemp(void);

#endif