// PIC18 in C - Versione 0.99 - Luglio 2019
// Copyright (c) 2019, Vincenzo Villa
// Creative Commons | Attribuzione - Condividi allo stesso modo 4.0 Internazionale (CC BY-SA 4.0)
// Creative Commons | Attribution-Share Alike 4.0 Unported
// https://www.vincenzov.net/tutorial/PIC18/i2c-mcc-k42.htm  
// PIC18F2xK42 / MPLAB X 5.20 / XC8 2.05 / MCC 3.85.1
// LM75A I2C temperature sensor 

#ifndef LM75A_H
#define	LM75A_H

#include <xc.h> 

// LM75A I2C temperature sensor - See data-sheet and schematic

#define LM75A_ADDR 0x48    // Address (A0 A1 A2 = 000)
#define LM75A_TEMP 0x00    // Temperature register
#define LM75A_CONF 0x01    // Configuration register
#define LM75_SHUTDOWN 0x01 // Code to selle LM75A 
#define LM75_NORMAL 0x00   // COde to wakeup LM75A

typedef union {           // Hold temperature as read from LM75A...
    uint16_t u;           // ... as 2 unsigned byte (2 byte fron i2c)
    int16_t i;            // ... as 2' complements (temperature value - See LM75A datasheet
} temperature_t;

float ReadTemperatureLM75Af(void);   // Read temperature from LM75A
int ReadTemperatureLM75A(void);      // Read temperature*100 from LM75A as integer (20,5 °C -> 2050)
void PowerUpLM75(void);             // Power on LM75. require up to 300 ms for first measurement
void PowerDownLM75(void);           // Sleep LM75

#endif	// LM75A_H