rages:
Stavo provando questo programma, ho aggiunto io la parte x l'LCD
#include <i2cmaster.h>
#include <LiquidCrystal.h>
#include <stdio.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
char buf[10];
void setup(){
lcd.begin(16, 2);
Serial.begin(9600);
Serial.println("Setup...");
i2c_init(); //Initialise the i2c bus
PORTD = (1 << PORTD2) | (1 << PORTD3);//enable pullups
}
void loop(){
int dev = 0x5A<<1;
int data_low = 0;
int data_high = 0;
int pec = 0;
i2c_start_wait(dev+I2C_WRITE);
i2c_write(0x07);
// read
i2c_rep_start(dev+I2C_READ);
data_low = i2c_readAck(); //Read 1 byte and then send ack
data_high = i2c_readAck(); //Read 1 byte and then send ack
pec = i2c_readNak();
i2c_stop();
//This converts high and low bytes together and processes temperature, MSB is a error bit and is ignored for temps
double tempFactor = 0.02; // 0.02 degrees per LSB (measurement resolution of the MLX90614)
double tempData = 0x0000; // zero out the data
int frac; // data past the decimal point
// This masks off the error bit of the high byte, then moves it left 8 bits and adds the low byte.
tempData = (double)(((data_high & 0x007F) << 8) + data_low);
tempData = (tempData * tempFactor)-0.01;
float celcius = tempData - 273.15;
float fahrenheit = (celcius*1.8) + 32;
Serial.print("Celcius: ");
Serial.println(celcius);
sprintf(buf, "Temperatura!%d", celcius);
lcd.write(buf);
Serial.print("Fahrenheit: ");
Serial.println(fahrenheit);
delay(5000); // wait a second before printing again
lcd.clear();
delay(5000);
}
Scusate per la domanda ... molto probabilmente è una idiozia ... ma è possibile che il mio display che proviene dalla cina mi riporti dei caratteri cinesi al posto degli europei ???
Ho capito il problema: quando vai a fare il print su display scrivi così:
lcd.print(temp,DEC)