frsa

#define LCDREVERSED   // dreht die Anzeige des LCD um 180 Grad
#include <AskSinPP.h>
#include <displays/Lcd6749.h>
#define LCD_CS_1   4
#define LCD_CS_2   5
#define LCD_WR     7
#define LCD_DATA   3

#include <OneWire.h>
#include <DallasTemperature.h>

using namespace as;

#define BAUD_RATE       9600
#define ONE_WIRE_BUS    6
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensor(&oneWire);
float temperatur = 0.0;

LCD6749<LCD_CS_1, LCD_WR, LCD_DATA> lcd1;
LCD6749<LCD_CS_2, LCD_WR, LCD_DATA> lcd2;

enum _dots { NO_DOT, SINGLE_DOT, DOUBLE_DOT, BOTH_DOTS };

#define PauseMillis     1000 // Dauer delay
#define LED_PIN         5    // Pin der Hintergrundbeleuchtung
#define Helligkeit      50  // Helligkeit der Hintergrundbeleuchtung
#define Alarm_PIN       8   // Ausgang Summer
#define Alarm_Abstand   250
#define Warnschwelle_1  25

bool Alarm_Zustand    = false;

void setup() {
  sensor.begin();
  Serial.begin(BAUD_RATE);
  Serial.print("Anzahl Sensoren: ");
  Serial.println(sensor.getDeviceCount());
  pinMode (LED_PIN, OUTPUT);
  pinMode (Alarm_PIN, OUTPUT);
}

void loop() {
  analogWrite (LED_PIN, Helligkeit);
  sensor.requestTemperatures();
  temperatur = sensor.getTempCByIndex(0);
  Serial.println(temperatur);

  lcd1.init();
  lcd2.init();
  lcd1.printWithUnit(temperatur, SINGLE_DOT, 'C');
  lcd2.printWithUnit(temperatur, SINGLE_DOT, 'C');

  if ((temperatur > Warnschwelle_1) && (Alarm_Zustand == false)) {
    for (uint8_t i = 0; i < 4; i++) {
      digitalWrite (Alarm_PIN, HIGH);
      digitalWrite (LED_PIN, HIGH);
      delay (Alarm_Abstand);
      digitalWrite (Alarm_PIN, LOW);
      digitalWrite (LED_PIN, LOW);
      delay (Alarm_Abstand);
    }
    Alarm_Zustand = true;
  } else {
    delay(PauseMillis);
  }

  if (temperatur <= Warnschwelle_1) {
    Alarm_Zustand = false;
  }

}