基于Arduino UNO的办公室测温仪

   

#include <OneWire.h>
#include <Wire.h>
#include "DFRobot_RGBLCD.h"
int DS18S20_Pin = 2; //DS18S20 Signal pin on digital 2
DFRobot_RGBLCD lcd(16,2);  //16 characters and 2 lines of show
//Temperature chip i/o
OneWire ds(DS18S20_Pin);  // on digital pin 2
void setup(void)
{
  Serial.begin(9600);
  lcd.init();
  lcd.setRGB(0, 255, 0);
  lcd.setCursor(1, 0 );
  lcd.print("Tep: ");
}

void loop(void)
{
 float temperature = getTemp();
  delay(1000);
   lcd.setCursor(5,0); 
   lcd.print(temperature);
    if(temperature<25)
    {
    lcd.setRGB(0, 255, 0);
   }
    else if (temperature<30)
    {
    lcd.setRGB(255, 215, 0);
    }
    else 
    {
    lcd.setRGB(255, 0, 0);
    }
    lcd.setCursor(10, 0 );
   lcd.write(0xdf);              //display°
   lcd.print('C');
    delay(100);
  delay(100); //just here to slow down the output so it is easier to read
}
float getTemp()
{
  //returns the temperature from one DS18S20 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;
  }

  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;
  
}
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库文件—办公室测温仪.zip