Codec/Decode

2.1 Codec/Decode

• ① Get string from json, enter JSON string, analyse.

• ② Get numbers from json, enter JSON string, analyse.

• ③ Get json object.

• ④ Get json object in order.

• ⑤ End json.

• ⑥ Change cJSON into string, add cJSON object.

• ⑦ cJSON add number object.

• ⑧ cJSON add string object.

• ⑨ cJSON add object, TAG, data to be inserted.

• A test interface is provided here：http://api.8ms.xyz/weather/ (http://api.8ms.xyz/weather/)

json value：

{"city":"深圳","datas":
    [{"air":"良","date":"2020-11-27","wea":"多云","weaImg":"yun","weekDesc":"周五","wendu":"16~25°C","wet":"87"},
    {"date":"2020-11-28","wea":"多云","weaImg":"yun","weekDesc":"周六","wendu":"14~24°C"},
    {"date":"2020-11-29","wea":"多云","weaImg":"yun","weekDesc":"周日","wendu":"15~23°C"},
    {"date":"2020-11-30","wea":"多云","weaImg":"yun","weekDesc":"周一","wendu":"16~23°C"}]
}

Case tutorial

• Case sharing link：https://8ms.xyz/view/share/NjQ5OCMxODUy

• Create UI in Designer

• “①” Object naming area.

• “②” Data display area.

• “③” Refresh button.

• Blockly implementation

• 1、WIFI connection：

• The path to the WIFI block: Click Base Peripherals->WIFI.

• “①” WIFI SSID.

• “②” WIFI Password.

• “③” WIFI Auth mode.

• 2、Declare http request callback and Json data analysis:

• The path to Declare http request callback：Click IOT->HTTP.

• The path to Codec/Decode：Click Base->Codec/Decode.

• “①” Parse the Json data to get date.

• “②” Parse the Json data to get wealmg.

• “③” Parse the Json data to get wendu.

• 3、Add a callback function to the refresh button:

• The path to the button callback function block: Click Process/Event -> UI.

• The path to set Http request callback and request http page blocks: Click IOT->HTTP.

• “①” Set Http request callback.

• “②” Request http page.

Code analysis

• Zip files

• Code analysis

• “①” WiFi connection.

• “②” Parse the Json data to get date.

• “③” Parse the Json data to get wealmg.

• “①” Parse the Json data to get wendu.

• “②” Declare http request callback.

• “③” Refresh button callback function.