I got a complete software made by a developer. There is a STM32 microcontroller and SIM900 with GPRS/GSM/email etc
For some reason, the inserted sim card establishes connection and rings normally when i call,
but when i send AT COM i do not get replies.
I need an expert someone to solve the problem.
14 Freelancer bietetn im Durchschnitt $238 für diesen Job an
Hi, I hope you are doing well. I have expertise in GSM based embedded applications. I have understood your project requirements and I can execute it in less possible time. Looking Forward, Khawaja