连接图

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文章简介

提示：这里可以添加技术名词解释

esp32通过HTTPclient，获取腾讯天气的json格式数据，然后提取相应的数据到oled屏幕上。

代码细节

提示：这里可以添加技术细节

#include <Arduino.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET 4
#define SCREEN_WIDTH 128  // OLED宽度（像素）
#define SCREEN_HEIGHT 64  // OLED高度（像素）
#define OLED_ADDR 0x3C    // I2C地址（0x3C或0x3D）

int degree   = 0;
int humidity = 0;

Adafruit_SSD1306 display(SCREEN_WIDTH,SCREEN_HEIGHT,&Wire,OLED_RESET);   //Wire库负责处理I2C通信,定义了OLED显示屏的重置引脚。
                                                            //虽然在这个例子中没有使用重置功能，但Adafruit_SSD1306库需要这个参数。

String ssid = "xinxin";
String pswd = "xinxin1102";

void Deserialize(String response);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.print("连接wifi");
  Serial.println(ssid);
  WiFi.begin(ssid,pswd);
  display.begin(SSD1306_SWITCHCAPVCC,OLED_ADDR);   // 0x3C内存位置
  while (WiFi.status()!= WL_CONNECTED)
  {
    delay(500);
    Serial.print(".");
  }
  if(WiFi.status()== WL_CONNECTED)
  {
    HTTPClient http;
    http.begin("https://wis.qq.com/weather/common?source=pc&weather_type=observe&province=河南&city=新乡&county=牧野区");
    int httpCode = http.GET();
    if(httpCode>0)
    {
      String response = http.getString();
      Serial.printf("HTTP响应码：%d\n",httpCode);
      Serial.print("HTTP响应内容:");
      Serial.println(response);
      Deserialize(response);

      display.setTextColor(WHITE);  //开像素点发光
      display.clearDisplay();   //清屏 
      display.setTextSize(2); //字体大小
      display.setCursor(15,15); //显示位置
      display.println("temp");
      display.setCursor(85,15); 
      display.println(degree);
      display.setCursor(15,45); //显示位置
      display.println("humi");
      display.setCursor(85,45); 
      display.println(humidity);
      display.display();  // 开显示
    }
    http.end();
  }
}

void loop() {
  // put your main code here, to run repeatedly:
}

void Deserialize(String response)
{
   //{"data":{"observe":{"degree":"6","humidity":"29","precipitation":"0","pressure":"1006","update_time":"202502181100","weather":"晴","weather_bg_pag":"
   //","weather_code":"00","weather_color":null,"weather_first":"","weather_pag":"","weather_short":"晴","weather_url":"","wind_direction":"0","wind_direction_name":"微风","wind_power":"4-5"}},"message":"OK","status":200}
  DynamicJsonDocument json_msg(1024); 
  DynamicJsonDocument json_item(1024); 
  DynamicJsonDocument json_value(1024); 

  deserializeJson(json_msg,response);
  String data = json_msg["data"];

  deserializeJson(json_item,data);
  String observe = json_item["observe"]; 

  deserializeJson(json_value,observe);
  degree = json_value["degree"]; 
  humidity = json_value["humidity"]; 
  String weather_short = json_value["weather_short"]; 
  
  Serial.printf("温度：%d\n",degree);
  Serial.printf("湿度：%d\n",humidity);
  Serial.print(weather_short);
}
     

运行结果

提示：这里可以添加总结

--- Terminal on COM9 | 115200 8-N-1
--- Available filters and text transformations: colorize, debug, default, direct, esp32_exception_decoder, hexlify, log2file, nocontrol, printable, send_on_enter, time
--- More details at https://bit.ly/pio-monitor-filters
--- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H
ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
entry 0x400805e4
连接wifixinxin
.HTTP响应码：200
HTTP响应内容:{"data":{"observe":{"degree":"1","humidity":"70","precipitation":"0","pressure":"1028","update_time":"202502220925","weather":"霾","weather_bg_pag":"","weather_code":"53","weather_color":null,"weather_first":"","weather_pag":"","weather_short":"霾","weather_url":"""霾","weather_bg_pag":"","weather_code":"53","weather_color":null,"weather_first":"","weather_pag":"","weather_short":"霾","weather_url":"""霾","weather_bg_pag":"","weather_code":"53","weather_color":null,"weather_first":"","weather_pag":"","weather_short":"霾","weather_url":"","wind_direction":"1","wind_direction_name":"东北风","wind_power":"5-6"}},"message":"OK","status":200}
"霾","weather_bg_pag":"","weather_code":"53","weather_color":null,"weather_first":"","weather_pag":"","weather_short":"霾","weather_url":"""霾","weather_bg_pag":"","weather_code":"53","weather_color":null,"weather_first":"","weather_pag":"","weather_short":"霾","weather_url":"","wind_direction":"1","wind_direction_name":"东北风","wind_power":"5-6"}},"message":"OK","status":200}
温度：1
湿度：70
霾

例如：

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