57 lines
1.1 KiB
C++
57 lines
1.1 KiB
C++
#include <LiquidCrystal.h>
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#include <dht_nonblocking.h>
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#define DHT_SENSOR_TYPE DHT_TYPE_11
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static const int DHT_SENSOR_PIN = 2;
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DHT_nonblocking dht_sensor(DHT_SENSOR_PIN, DHT_SENSOR_TYPE);
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// LCD: RS E D4 D5 D6 D7
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LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
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// Funzione di misura
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static bool measure_environment(float *temperature, float *humidity)
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{
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static unsigned long measurement_timestamp = 0;
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// Ogni 3 secondi (3000ms)
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if (millis() - measurement_timestamp > 3000ul)
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{
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if (dht_sensor.measure(temperature, humidity) == true)
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{
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measurement_timestamp = millis();
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return true;
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}
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}
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return false;
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}
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void setup()
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{
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lcd.begin(16, 2);
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lcd.print("Avvio...");
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}
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void loop()
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{
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float temperature;
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float humidity;
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if (measure_environment(&temperature, &humidity))
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{
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Temp: ");
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lcd.print(temperature, 1);
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lcd.print((char)223); // Simbolo ° (gradi)
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lcd.print("C");
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lcd.setCursor(0, 1);
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lcd.print("Umid: ");
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lcd.print(humidity, 1);
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lcd.print("%");
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}
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// Nessun delay! Lascia il loop girare veloce
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}
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