Write some Software

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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.

Perangkat Lunak Bawaan Tata Letak PCB Perancangan Perangkat Lunak

ID Proyek: #11678768

Tentang proyek

12 proposal Proyek online Aktif 7 tahun yang lalu

12 freelancer rata-rata menawar $245 untuk pekerjaan ini

sagradoamicus

A proposal has not yet been provided

$300 USD dalam 4 hari
(194 Ulasan)
7.9
mechatronicsengr

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

$263 USD dalam 3 hari
(59 Ulasan)
7.0
ahmad5857

Hi sir, We are good in embedded systems, we offer you our solution to your problem at very low and affordable rates, I am just in sake for the 5 star review only. Please discuss. We are team of expert engineers w Lebih banyak

$98 USD dalam 7 hari
(48 Ulasan)
6.8
ibrahimdanish

Hi, I am very much interested in your project as I believe I have the expertise, knowledge, skills and tools to do your project. I am embedded software developer with more than 7 years of experience of professional e Lebih banyak

$500 USD dalam 7 hari
(23 Ulasan)
6.0
CoherentTech123

Hello Dear, We are a team of experts with a cumulative experience of more than 50 years in the field of embedded systems, electronics, Firmware development and prototyping. Our experts have hands on experience Lebih banyak

$150 USD dalam 10 hari
(55 Ulasan)
6.2
saminatinny

A proposal has not yet been provided

$244 USD dalam 5 hari
(3 Ulasan)
4.1
blackwind97

Hello Sir, I would like you to know that for the past 1 year I am working on STM32 cortex M-4 series controller and has also made a code for GPRS/GSM using sim 900 and sim808 modules ,currently I have a product that w Lebih banyak

$100 USD dalam 3 hari
(2 Ulasan)
2.6
mkyadav206

I have working on stm32f4 before one year and also work on gsp module very well. i must complete your project within the time limit.

$240 USD dalam 4 hari
(0 Ulasan)
0.0
siangming

I need full source code.

$200 USD dalam 7 hari
(0 Ulasan)
0.0
logindtechnology

# Having 17+ years of experience in Design, Development and Project Management of Embedded System software & Industrial Automation software. # Experience in developing embedded software for MPC 5200(Power PC) & ARM Lebih banyak

$180 USD dalam 7 hari
(0 Ulasan)
0.0
arunjoec

I'm a professional working with gsm based tracking devices

$111 USD dalam 10 hari
(0 Ulasan)
0.0