ciao a tutti, un quesito.. come faccio a modificare questo codice affinche riesca a leggere 2 temperature aggiungendo un altro sensore??
#include <OneWire.h>
#include <LiquidCrystal.h>
#define BUTTON A0
int DS18B20_Pin = 2;
OneWire ds(DS18B20_Pin);
LiquidCrystal lcd(8,9,4,5,6,7);
void setup(void) {
Serial.begin(9600);
lcd.begin(16, 2);
}
void loop(void) {
float temperature = getTemp();
Serial.println(temperature);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Temperatura: ");
lcd.setCursor(0,1);
lcd.print(temperature);
delay(1000);
}
float getTemp(){
//returns the temperature from one DS18B20 in DEG Celsius
byte data[12];
byte addr[8];
if ( !ds.search(addr)) {
//no more sensors on chain, reset search
ds.reset_search();
return -1000;
}
if ( OneWire::crc8( addr, 7) != addr[7]) {
Serial.println("CRC is not valid!");
return -1000;
}
if ( addr[0] != 0x10 && addr[0] != 0x28) {
Serial.print("Device is not recognized");
return -1000;
}
ds.reset();
ds.select(addr);
ds.write(0x44,1); // start conversion, with parasite power on at the end
byte present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
for (int i = 0; i < 9; i++) { // we need 9 bytes
data = ds.read();
-
}*
-
ds.reset_search();*
-
byte MSB = data[1];*
-
byte LSB = data[0];*
-
float tempRead = ((MSB << 8) | LSB); //using two's compliment*
-
float TemperatureSum = tempRead / 16;*
-
return TemperatureSum;*
}
grazie in anticipo