// 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 

#include "mcc_generated_files/mcc.h"
#include "LM75A.h"

float ReadTemperatureLM75Af() {
    temperature_t Temperature;

    Temperature.u = i2c2_read2ByteRegister(LM75A_ADDR, LM75A_TEMP);

    // See Table 10.Temp register value un data scheet
    // Temperature.u = (0x7FF << 5); // Only for debug! -0,125 °C
    // Temperature.u = (0x648 << 5); // Only for debug! -55 °C
    // Temperature.u = (0x3f8 << 5); // Only for debug! +127 °C

    // NOP(); // For debug, un-comment and place breakpoint here

    return ( (float) Temperature.i / 256);
}

void PowerUpLM75(void) {
    i2c2_write1ByteRegister(LM75A_ADDR, LM75A_CONF, LM75_NORMAL);
    return;
}

void PowerDownLM75(void) {
    i2c2_write1ByteRegister(LM75A_ADDR, LM75A_CONF, LM75_SHUTDOWN);
    return;
}

int ReadTemperatureLM75A() {
    temperature_t Temperature;
    
    Temperature.u = i2c2_read2ByteRegister(LM75A_ADDR, LM75A_TEMP);

    // See Table 10.Temp register value un data scheet
    // Temperature.u = (0x7FF << 5); // Only for debug! -0,125 °C
    // Temperature.u = (0x648 << 5); // Only for debug! -55 °C
    // Temperature.u = (0x3f8 << 5); // Only for debug! +127 °C

    // NOP(); // For debug, un-comment and place breakpoint here
    
    return ((__int24) Temperature.i * 100) >> 8; // Return temperature * 100

}