基于wifi模组+villakit协议的智能温湿度传感器设计代码
时间: 2024-01-12 10:02:29 浏览: 32
以下是基于ESP8266和DHT11的智能温湿度传感器设计代码,其中使用了villakit协议和MQTT协议:
```
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <DHT.h>
// WiFi信息
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
// MQTT信息
const char* mqtt_server = "your_MQTT_SERVER";
const int mqtt_port = 1883;
const char* mqtt_user = "your_MQTT_USERNAME";
const char* mqtt_password = "your_MQTT_PASSWORD";
const char* mqtt_topic = "your_MQTT_TOPIC";
// DHT11引脚
#define DHTPIN 2
// DHT11类型
#define DHTTYPE DHT11
// 初始化DHT11传感器
DHT dht(DHTPIN, DHTTYPE);
// WiFi客户端
WiFiClient wifiClient;
// MQTT客户端
PubSubClient mqttClient(wifiClient);
void setup() {
// 初始化串口
Serial.begin(9600);
// 连接WiFi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
// 连接MQTT服务器
mqttClient.setServer(mqtt_server, mqtt_port);
while (!mqttClient.connected()) {
if (mqttClient.connect("ESP8266Client", mqtt_user, mqtt_password )) {
Serial.println("Connected to MQTT broker");
} else {
Serial.print("Failed to connect to MQTT broker, rc=");
Serial.println(mqttClient.state());
delay(5000);
}
}
// 初始化DHT11传感器
dht.begin();
}
void loop() {
// 获取温湿度数据
float temperature = dht.readTemperature();
float humidity = dht.readHumidity();
// 发送温湿度数据到MQTT服务器
char payload[128];
snprintf(payload, 128, "{\"temperature\": %.2f, \"humidity\": %.2f}", temperature, humidity);
mqttClient.publish(mqtt_topic, payload);
// 输出温湿度数据
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.print("C, Humidity: ");
Serial.print(humidity);
Serial.println("%");
// 延迟2秒
delay(2000);
}
```
该代码中使用了DHT库和PubSubClient库,需要先在Arduino IDE中安装这两个库。在setup函数中,首先连接WiFi,然后连接MQTT服务器。在loop函数中,首先获取温湿度数据,然后将数据编码为JSON格式,并通过MQTT协议发送到服务器。最后输出温湿度数据,并延迟2秒。需要注意的是,该代码中的WiFi、MQTT和DHT11信息需要根据实际情况进行修改。