- AT+CWJAP="xxxx_5G","1234xxxxxx"
- AT+CIPSTART="TCP","api.seniverse.com",80
配置ESP8266为透传模式以及发送数据指令
使用GET的方式获取天气数据，我这里是获取的济南的天气当，你也可以根据i生成数组获取当前的数据。
- GET /v3/weather/now.json?key=<span style="color: rgb(0, 0, 0); font-size: medium; background-color: rgb(255, 255, 255);">your_api_key</span>&location=jinan&language=en&unit=c HTTP/1.1
- Content-Type:application/json;charset=utf-8
- Host:api.seniverse.com
- Connection: Keep Alive
Date可以提前时间数据，json里面可以获取温度和天气数据。
- HTTP/1.1 200 OK
- Date: Wed, 20 Jul 2022 04:17:13 GMT
- Content-Type: application/json; charset=utf-8
- Content-Length: 269
- Connection: keep-alive
- access-control-allow-origin: *
- etag: W/"1 "
- x-powered-by: Express
- x-ratelimit-limit: 20;w=60
- x-ratelimit-remaining: 19
- x-ratelimit-reset: 60.000
- x-request-id: xxx
- x-tenant-id: 75
- {"results":[{"location":{"id":"WWE0TGW4PX6N","name":"Jinan","country":"CN","path":"Jinan,Jinan,Shandong,China","timezone":"Asia/Shanghai","timezone_offset":"+08:00"},"now":{"text":"Light rain","code":"13","temperature":"23"},"last_update":"2022-07-20T12:02:10+08:00"}]}
"code":"13"为天气代码，在https://docs.seniverse.com/api/start/code.html可以看到每一个代码代表的天气含义，也可以获取图片。
串口中的数据。
开始代码的编写。
串口的代码编写的方法与esp8266的功能，可以查看https://bbs.21ic.com/icview-3239654-1-1.html这里。
这里主要是看如何实现esp8266 get 天气数据。
下面的代码就是实现ESP8266的初始化，连接wifi，建立与服务器的连接。
- void cfg_Esp8266(void)
- {
- if(ESP8266_Init())
- {
- printf("ESP8266 init succ \r\n");
- }
- else printf("ESP8266 init fail！\r\n");
- //连接热点
- if(ESP8266_ConnectAP(WIFI_NAME,WIFI_PASSWD))
- {
- printf("Connected to WIFI！\r\n");
- }
- else printf("to WIFI fail\r\n");
- Delay_Us(1000);
- if(ESP8266_ConnectServer("TCP","api.seniverse.com",80)!=0)
- {
- printf("to Server succ！\r\n");
- }
- else printf("to Server Fail！\r\n");
- }
使用ESP8266的AT指令实现GET 方法。
- ESP8266_ATSendString((char*)"GET /v3/weather/now.json?key=XXXXX&location=jinan&language=en&unit=c HTTP/1.1\r\nContent-Type:application/json;charset=utf-8\r\nHost:api.seniverse.com\r\nConnection: Keep Alive\r\n\r\n");
-
- //向ESP8266发送字符串
- void ESP8266_ATSendString(char* str)
- {
- memset(usart2_rxbuf,0, 1024);
- //每次发送前将接收串口接收总数置0,为了接收
- USART2_RX_STA = 0;
- while(*str) {
- USART_SendData(USART2, *str);
- while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
- str++;
- }
- }
下面要解析获取的数据。
在获取的数据中有这样的数据，包含了时间信息。这里使用的是sscanf来分解时间数据。
- Date: Wed, 20 Jul 2022 04:25:20 GMT
- char *pos=strstr(usart2_rxbuf,"Date");
- if(*pos)
- {
- memset(data_c,0,sizeof(data_c));
- while(*pos!='\r' && ch_len<128)
- {
- data_c[ch_len]= *pos;
- ch_len++;
- pos++;
- }
- //printf("Date:%s \r\n", data_c);
- sscanf(data_c,"Date: %[^,], %d %s %d %d:%d:%d GMT",
- s1,&day1,s3,&year1,&hour1,&min,&sec);//分解时间 给年月日时分秒赋值
- }
然后对RTC模块进行赋值了。
RTC_Set(year,month,day,hour,min,sec);
在系统内部实现，每秒读取一次数据，把数据显示在LCD上。
- if(get_tDiff(last_time1)>1000){//每秒执行一次
- last_time1=timer_cnt;
- sprintf(s_temp,"%02d:%02d ",calendar.hour, calendar.min);
- LCD_ShowStringCn(0,0,s_temp,GREEN,BLACK,32,0);
- sprintf(s_temp,"%02d ", calendar.sec);
- LCD_ShowStringCn(84,8,s_temp,WHITE,BLACK,24,0);
- sprintf(s_temp,"%d-%02d-%02d ", calendar.w_year, calendar.w_month, calendar.w_date);
- LCD_ShowStringCn(0,32,s_temp,GREEN,BLACK,24,0);
- }
{"results":[{"location":{"id":"WWE0TGW4PX6N","name":"Jinan","country":"CN","path":"Jinan,Jinan,Shandong,China","timezone":"Asia/Shanghai","timezone_offset":"+08:00"},"now":{"text":"Moderate rain","code":"14","temperature":"23"},"last_update":"2022-07-20T12:12:15+08:00"}]}
这个json格式，没有详细的进行分解，只是获取code里面的数据，使用strstr就可以实现。
定位到前面的标志以后，查找后面固定的位数数据即可。
- pos=strstr(usart2_rxbuf,"code");//查找code的数据
- if(*pos)
- {
- if(*(pos+8)>='0' && *(pos+8)<='9')
- weather_code= (*(pos+7)-'0')*10+*(pos+8)-'0';
- else weather_code= (*(pos+7)-'0');}
- if(weather_code>40)weather_code=39;
- pos=strstr(usart2_rxbuf,"temperature");//查找temperature
- if(*pos)
- {if(*(pos+15)>='0' && *(pos+15)<='9')
- temper= (*(pos+14)-'0')*10+*(pos+15)-'0';
- else temper= (*(pos+14)-'0');
- }
- char weather_CNdis[40][16]={"晴","晴","晴","晴","多云","晴间多云","晴间多云","大部多云",
- "大部多云","阴","阵雨","雷阵雨","雷阵雨","小雨","中雨","大雨","暴雨","大暴雨","特大暴雨",
- "冻雨","雨夹雪","阵雪","小雪","中雪","大雪","暴雪","浮尘","扬沙","沙尘暴","强沙尘暴","雾",
- "霾","风","大风","飓风","热带风暴","龙卷风","冷","热","未知"};
- sprintf(s_temp,"天气:%s ",weather_CNdis[weather_code]);
- LCD_ShowStringCn(0,64,s_temp,BLUE,BLACK,32,0);
- sprintf(s_temp,"温度:%d ℃ ",temper);
没有获取时间的图片
更新了时间的图片
获取时间和天气的图片
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