Svenska ElektronikForumet

Kod: Markera allt

#include <OneWire.h>
#include <DallasTemperature.h>
#include <SPI.h><br>#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_RESET 4 
Adafruit_SSD1306 display(OLED_RESET);
#define ONE_WIRE_BUS 4

OneWire oneWire(ONE_WIRE_BUS);

DallasTemperature sensors(&oneWire);

void setup(void)
{
// Start serial communication for debugging purposes
Serial.begin(9600);     // initialize the Serial Monitor at a baud rate of 9600
// Start up the library
sensors.begin();        // initialize the DS18B20 temperature sensor:


  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
}

void loop(void){ 
// Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
sensors.requestTemperatures(); 
Serial.print("Celsius temperature: ");  
// Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
Serial.println(sensors.getTempCByIndex(0));     // get and print the temperature in degree Celsius
float T = sensors.getTempCByIndex(0);  // let T be temperature in degC from sensor<br>// floating-point number, with a decimal point

delay(1000);

display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE); 
display.setCursor(0,0);
display.println("Vattentemp: ");   // display temperature in deg Celsius
display.setCursor(0,10);
display.setTextSize(3);
display.print(T);
display.print(" ");
display.cp437(true);      // code page 437
display.write(167);       // character 167 is degree
display.println("C");
display.display();    // for the changes to make effect
}

Kod: Markera allt

String sT = String(T, 1);
display.print(sT);