帮我写一个基于arduino的代码,要通过eps8266-01s连上WiFi并从心知天气获取天气数据从而控制LED的亮灭,晴天红色灯和黄色灯亮,雨天蓝色灯亮,其他情况灯灭。
时间: 2024-02-23 20:58:02 浏览: 52
好的,以下是基于Arduino的代码实现:
首先需要安装并导入以下两个库:
- ESP8266WiFi.h
- ArduinoJson.h
代码如下:
```C++
#include <ESP8266WiFi.h>
#include <ArduinoJson.h>
// WiFi信息
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
// 心知天气信息
const char* host = "api.seniverse.com";
const char* apiKey = "your_API_KEY";
const char* location = "your_LOCATION";
// LED引脚
const int redLED = 2;
const int yellowLED = 3;
const int blueLED = 4;
// WiFi客户端
WiFiClient client;
// 获取天气数据
void getWeather() {
// 建立连接
if (!client.connect(host, 80)) {
Serial.println("连接失败");
return;
}
// 发送GET请求
client.print(String("GET /v3/weather/now.json?key=") + apiKey + "&location=" + location + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n\r\n");
// 等待服务器响应
while (!client.available()) {
delay(100);
}
// 读取响应
String response = client.readString();
// 解析JSON
const size_t capacity = JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(1) + 50;
DynamicJsonDocument doc(capacity);
deserializeJson(doc, response);
// 获取天气信息
const char* text = doc["results"][0]["now"]["text"];
// 根据天气信息控制LED
if (strcmp(text, "晴") == 0) {
digitalWrite(redLED, HIGH);
digitalWrite(yellowLED, HIGH);
digitalWrite(blueLED, LOW);
} else if (strcmp(text, "雨") == 0) {
digitalWrite(redLED, LOW);
digitalWrite(yellowLED, LOW);
digitalWrite(blueLED, HIGH);
} else {
digitalWrite(redLED, LOW);
digitalWrite(yellowLED, LOW);
digitalWrite(blueLED, LOW);
}
}
void setup() {
Serial.begin(9600);
// 连接WiFi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("连接中...");
}
// 初始化LED
pinMode(redLED, OUTPUT);
pinMode(yellowLED, OUTPUT);
pinMode(blueLED, OUTPUT);
}
void loop() {
getWeather();
delay(60000); // 每隔一分钟获取一次天气
}
```
其中,需要替换以下部分:
- `your_SSID`和`your_PASSWORD`:你的WiFi账号和密码
- `your_API_KEY`:你在心知天气申请的API KEY
- `your_LOCATION`:你要查询天气的城市
将代码上传到Arduino板子上,即可实现通过EPS8266-01S连接WiFi并从心知天气获取天气数据,控制LED的亮灭。
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