【Follow me第二季第4期】一些联网获取的信息展示屏

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【Follow me第二季第4期】一些联网获取的信息展示屏 [复制链接]

 

备忘

    比较好的官方讲解：Installing a Board Package in the IDE 2 | Arduino Documentation

    字体使用：Using Fonts | Adafruit GFX Graphics Library | Adafruit Learning System

    在线创建字体： truetype2gfx - Converting fonts from TrueType to Adafruit GFX

    解码汉字正确的网址：UTF-8编码转换器-ME2在线工具

背景

有一个tft0.96的屏幕，可以从网络获取一些信息，用于展示。

学习了几天汉字的显示，无奈水平不够，资料不多，不能显示汉字出来，所以遇到汉字的地方，做个判断，转换为英文显示。

程序结构

 

代码

开启无线网卡

  if (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    while (true);
  }

  String fv = WiFi.firmwareVersion();
  if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
    Serial.println("Please upgrade the firmware");
  }
  Serial.println(fv);


  // attempt to connect to Wifi network:
  status = WiFi.begin(ssid, pass);
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
    // wait 10 seconds for connection:
    delay(1000);
  }
  Serial.println("Connected to wifi");
  printWifiStatus();

连接wifi，准备使用获取天气信息接口

  // if you get a connection, report back via serial:
  if (client.connect(server, port)) {
    Serial.print("connected to server ");
    client.print("GET /v3/weather/weatherInfo?key=1682d31d8732a44f929068e6083c49ed&city=210200&extensions=all HTTP/1.1\r\n");
    client.println("Host: restapi.amap.com");
    client.println("User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)");
    client.println("Connection: close");
    client.print("Upgrade-Insecure-Requests: 1\r\n");
    
    client.println();
     Serial.println("send data  to server over!!");
  }

初始化tft屏幕

  tft.initR(INITR_MINI160x80_PLUGIN);
  tft.setRotation(1);
  tft.fillScreen(ConvertRGB(0x7F,0xFF,0xD4));
  tft.fillRect(80,0,10,20,ST77XX_YELLOW);

获取 信息，并解析需要的信息

  while (client.available()) {
    dataWeb[posi] = client.read();
    posi++;
  }
  Serial.write(dataWeb);

  updateTm = strstr(dataWeb,"reporttime")+13;
  date1 = strstr(updateTm,"date")+7;
  week1 = strstr(date1,"week")+7;
  dayweather = strstr(week1,"dayweather")+13;
  temp1 = strstr(dayweather,"daytemp")+10;
  temp2 = strstr(temp1,"nighttemp")+12;


  buff = strchr(updateTm,'"');
  buff[0] = 0;
  buff = strchr(date1,'"');
  buff[0] = 0;

  buff = strchr(week1,'"');
  buff[0] = 0;

  buff = strchr(dayweather,'"');
  buff[0] = 0;

  buff = strchr(temp1,'"');
  buff[0] = 0;

  buff = strchr(temp2,'"');
  buff[0] = 0;


  Serial.println();
  Serial.print("updateTm:");
  Serial.println(updateTm);
  Serial.print("date1:");
  Serial.println(date1);
  Serial.print("week1:");
  Serial.println(week1);
  Serial.print("dayweather:");
  Serial.println(dayweather);
  Serial.println(dayweather[0],HEX);
  Serial.println(dayweather[1],HEX);
  Serial.println(dayweather[2],HEX);
  Serial.print("temp1:");
  Serial.println(temp1);
  Serial.print("temp2:");
  Serial.println(temp2);

  if(dayweather[0] == 0xe6){
    dayweather = "sunshine"; 
  }else if(dayweather[0] == 0xe5){
    dayweather = "too cloudy"; 
  }else{
    dayweather = "Snowbound"; 
  }

展示信息到tft屏幕

  tft.setFont(&songti5pt7b);
  tft.setTextWrap(true);
  tft.setCursor(10, 30);
  tft.setTextColor(ST77XX_BLACK);
  tft.setTextSize(2);

  Serial.println("\r\n***************************************************************");
  writeText(0,"updateTm",updateTm);
  writeText(13,"date",date1);
  writeText(26,"week",week1);
  writeText(39,"dayweather",dayweather);
  writeText(52,"daytemp",temp1);
  writeText(65,"nighttemp",temp2);
  delay(6000000);

 

疑难杂症

    看了几篇备忘的字体汉字博文，不会用，生成的字体显示不出汉字，都是空字符，难搞。

    这个问题，待后期继续研究研究。

    github上有个台湾省的人，弄了个繁体字的，教程还挺繁琐，感觉靠谱。

效果图

IMG_1553

 

  代码

   20241224211819108.zip (2.32 KB, 下载次数: 0)

2024-12-24 21:18 上传

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结语

2040 Nano的紧凑设计使其特别适合用于空间有限的嵌入式项目。这一点对于物联网应用、便携式设备、教育领域等都是一个很大的优势。尽管体积小巧，但它依然提供了强大的功能和出色的性能，是一款性价比极高的开发工具。再次感谢EEWorld平台，让我们有机会深入体验这款出色的开发工具，并与更多开发者一起交流与学习。EEWorld的平台让我们得以接触到更多的优质硬件和工具，是广大开发者不可或缺的宝贵资源。

 

Jacktang

楼主的视频讲解很详细，很适合做技术主播啊

wangerxian

汉字问题，得调试看看，写入屏幕前是否就为空，如果是，应该就没转成功。