esp8266天气预报oled

要实现esp8266与oled显示天气预报，你可以有以下的步骤：

1. 获取天气数据：可以通过调用天气API获取天气数据，比如心知天气API、OpenWeatherMap等。

2. 解析天气数据：将获取到的天气数据进行解析，提取需要显示的天气信息，比如温度、天气状况、风力等信息。

3. 连接oled：连接esp8266与oled，可以使用I2C或SPI协议连接，具体可以参考oled的接口说明。

4. 显示天气信息：将解析后的天气信息通过oled显示出来，可以使用oled库进行显示，比如Adafruit_SSD1306库。

下面是一个简单的示例代码：

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <ArduinoJson.h>

#define OLED_RESET -1
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

const char* ssid = "your-ssid";
const char* password = "your-password";

const char* serverName = "api.openweathermap.org";
const char* apiKey = "your-api-key";
const char* city = "beijing";
const char* countryCode = "cn";

void setup() {
  Serial.begin(115200);

  // Connect to Wi-Fi network
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Wire.begin();

  // Initialize OLED display
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }

  // Clear the buffer
  display.clearDisplay();
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    display.clearDisplay();
    display.setTextColor(WHITE);

    // Make a HTTP request to OpenWeatherMap API
    String url = "/data/2.5/weather?q=" + String(city) + "," + String(countryCode) + "&appid=" + String(apiKey) + "&units=metric";
    WiFiClientSecure client;
    if (!client.connect(serverName, 443)) {
      Serial.println(F("Connection failed"));
      return;
    }
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +
                 "Host: " + serverName + "\r\n" +
                 "User-Agent: ESP8266\r\n" +
                 "Connection: close\r\n\r\n");
    while (client.connected()) {
      String line = client.readStringUntil('\n');
      if (line == "\r") {
        break;
      }
    }
    String response = client.readString();

    // Parse the JSON response
    DynamicJsonDocument doc(1024);
    deserializeJson(doc, response);
    JsonObject main = doc["main"];
    JsonObject wind = doc["wind"];
    JsonObject weather = doc["weather"][0];
    float temp = main["temp"];
    float feels_like = main["feels_like"];
    float humidity = main["humidity"];
    float wind_speed = wind["speed"];
    String description = weather["description"];

    // Display the weather information
    display.setCursor(0, 0);
    display.setTextSize(1);
    display.println("Weather in " + String(city) + ":");
    display.setTextSize(2);
    display.println(String(temp) + "C");
    display.setTextSize(1);
    display.println("Feels like " + String(feels_like) + "C");
    display.println("Humidity: " + String(humidity) + "%");
    display.println("Wind speed: " + String(wind_speed) + "m/s");
    display.println(description);
    display.display();
  } else {
    Serial.println("WiFi Disconnected");
  }
  delay(60000); // Update every minute
}

这个示例代码使用了OpenWeatherMap API获取天气信息并解析，然后通过oled显示出来。你需要将其中的ssid、password、apiKey、city和countryCode替换成你自己的。