原创 ESP32/ESP8266模块教程----OLED励志语录，自动换行

#include //wifi库
#include //json解析库
#include //http连接库
#include 

#include //u8g2oled库
#include 

#define BOARD_I2C_SCL   22
#define BOARD_I2C_SDA   21   
U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ BOARD_I2C_SCL, /* data=*/ BOARD_I2C_SDA, /* reset=*/ U8X8_PIN_NONE);   // All Boards without Reset of the Display

const char * ID = "XEMOWO_PC";//wifi账号
const char * PASSWORD = "1SUNjiajun";//wifi密码

const char*  one;//api第一行内容
const char*  two;//api第二行内容
const char*  three;//api第三行内容
const char*  four;//api第四行内容

String API = "";
String url_xinzhi = "";
String WeatherURL = "";


HTTPClient http;
String GitURL(String api)
{
  url_xinzhi =  "http://api.xemowo.top/api/yan/yan.php?oled=1";//oled=1则表示使用oled专属格式
  return url_xinzhi;
}



void ParseWeather(String url)
{  
  
  http.begin(url);
 
  int httpGet = http.GET();
  if(httpGet > 0)
  {
    Serial.printf("HTTPGET is %d",httpGet);
    
    if(httpGet == HTTP_CODE_OK)
    {
      StaticJsonDocument<500> doc;    
      

      String json = http.getString();
      Serial.println("解析");
      Serial.println(json);
        
      deserializeJson(doc, json);
     one = doc["one"]; // "人生就是一列开往坟墓"
     two = doc["two"]; // "的列车，路途上会有很"
     three = doc["three"]; // "多站，很难有人可以至"
     four = doc["four"]; // "始至终陪着走完。\n"
      
    }
    else
    {
      Serial.printf("ERROR1!!");
       ParseWeather(WeatherURL);
    }
  }
  else
  {
    Serial.printf("ERROR2!!");


     ParseWeather(WeatherURL);

  }
  http.end();
}






void setup() {
  // put your setup code here, to run once:
  u8g2.setFont( u8g2_font_wqy12_t_gb2312 );//设置为中文字体
  u8g2.begin();
  u8g2.enableUTF8Print();

  Serial.begin(115200);
  Serial.println("Init u8g2 ....");
  Serial.println("WiFi:");
  Serial.println(ID);
  Serial.println("PASSWORLD:");
  Serial.println(PASSWORD);


  WiFi.begin(ID,PASSWORD);

    u8g2.setCursor (0, 10);
    u8g2.println("连接wifi中");
    u8g2.sendBuffer();
    
  while(WiFi.status()!=WL_CONNECTED)
  {

    delay(10000);//延迟大一点，不然联网连不上！
    Serial.println("正在连接...");

    u8g2.setCursor (0, 10);
    u8g2.println("连接wifi中");
    u8g2.sendBuffer();
    
  }
 
  Serial.println("连接成功！");
  //==================wifi连接==================
  u8g2.clearBuffer();
  WeatherURL = GitURL(API); 
  



  delay(100);
}

void loop() {
    ParseWeather(WeatherURL);
    Serial.println(WeatherURL);
    u8g2.clearBuffer();//清平
    delay(10);
    
    u8g2.setCursor (0, 10);
    u8g2.println(one);

    u8g2.setCursor (0, 25);
    u8g2.println(two);

    u8g2.setCursor (0, 40);
    u8g2.println(three);

    u8g2.setCursor (0, 55);
    u8g2.println(four);   

    u8g2.sendBuffer();//将内容上传到缓存区


  
  delay(5000);
}