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標題: DHT22 Arduino代碼 [打印本頁]

作者: EdwardGU123 時間: 2023-1-1 19:40
標題: DHT22 Arduino代碼
include "DHT.h"

#define DHTPIN 2
#define DHTTYPE DHT22 // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Serial.println(F("DHT22 example!"));

  dht.begin();
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
Serial.println(F("Failed to read from DHT sensor!"));
return;
  }

  Serial.print(F("Humidity: "));
  Serial.print(humidity);
  Serial.print(F("%  Temperature: "));
  Serial.print(temperature);
  Serial.println(F("°C "));

  // Wait a few seconds between measurements.
  delay(2000);
}

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