STM32+ESP8266 obtains weather information and displays it on LCD

流年u7

STM32+ESP8266 obtains weather information and displays it on LCD [Copy link]

 

Hardware platform: stm32f429, esp8266 serial port wifi module. Weather data source: YaYa Weather[ http://www.yytianqi.com ]. (Other weather apps require mobile phone number registration, but this one doesn't, so I'll use this one) stm32f429 is connected to esp8266 through serial port 6, esp8266 is connected to the server API interface of YaYa Weatherapi.yytianqi.com, and data is obtained through GET request.

From the official website, we can see that there are 8 different types of request interfaces. Free users can use the first two. We use forecast7d to test it. For example,

GET http://api.yytianqi.com/forecast ... 1&key=xxxxxxxxxxxxx[key go to the official website to register and replace it], then find a network debugging assistant to test it. (Remember to press enter at the end of key and then click send)

Because it is a free user, you can only get 2 days of weather. From the information obtained, we can see that the data is in json format and there is no gbk encoding. To display it normally on LCD, we need to use cjson to extract the fields we need and convert them into gbk. First format the data received by the network debugging assistant.

{ "code": 1, "msg": "Sucess", "counts": 29, "data": { "cityId": "CH280601", "cityName": "深圳", "sj": "2018-11-05 19:00:00", "list": [{ "tq2": "Cloudy", "tq1": "Cloudy", "numtq1": "01", "numtq2": "01", "qw1": "27", "qw2": "22", "fl1": "Breeze", "fl2": "Breeze", "numfl1": 0, "numfl2": "0", "fx1": "Northeast Wind", "fx2": "No sustained wind direction", "numfx1": "1", "numfx2": "0", "date": "2018-11-05" }, { "tq2": "多云", "tq1": "多云", "numtq1": "01", "numtq2": "01", "qw1": "29", "qw2": "22", "fl1": "Level 3-4", "fl2": "Breeze", "numfl1": "1", "numfl2": "0", "fx1": "East Wind", "fx2": "No sustained wind direction", "numfx1": "2", "numfx2": "0", "date": "2018-11-06" }] } } The data is easy to understand after formatting. Take out the fields we want to display from here and we're done.

Test example: 【】STM32F429_获取天气().rar (1.19 MB, downloads: 537)

2018-11-6 10:19 上传

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懒猫爱飞

Good, great

newphj

Thank you for sharing

似水ai流年

Thanks for sharing

流年u7

There are also some interfaces that you can play with, such as generating QR codes.

tallmancyh

Thanks for sharing

liushiming82

Thank you for sharing and liking

1428662475

Very good reference, something to play with again

kibo

诺尔凌电子

Can I add you on QQ?

ljy_08

The OP really opened my eyes.

流年u7

ljy_08 posted on 2018-12-24 20:49 The OP really opened my eyes

Let’s play…

流年u7

西点钟灵毓秀

sszztt

Support the original work of the host

huo_hu

wang930626

Not bad, not bad, I'll download it and study it.

generalcircuits

It seems very powerful. Is the weather data transmitted via the Internet? The function is very powerful. This chip

流年u7

generalcircuits posted on 2019-6-25 11:10 It looks very powerful. Is the weather data transmitted via the Internet? The functions are very powerful, this chip

Yes, via serial WiFi.

generalcircuits

Liunianu7 posted on 2019-6-26 11:27 Yes, through serial port WiFi.

Excellent, I haven't learned this part yet, I don't understand, it looks quite interesting