Hello,
I already have ready software. but need an update. C language.
SDK Link https://github.com/Ai-Thinker-Open/GPRS_C_SDK.
Now I need.
1. Save data in the Config.dat file. The config data sent by SMS. 5 config parameters must be set in the config.dat file.
2. unsend GPS data. if gprs connection fails then GPS data is saved in the gpsdata.dat file. when the GPRS connection reconnects then send gpsdata.dat 1st to the server. then start sending new GPS data