tenyan / lwgsm

Library for SIMCOM GSM modules to communicate with AT commands and RTOS from host device

Lightweight GSM-AT parser

LwGSM is lightweight, platform independent, AT commands parser, targeting for communicion with SIMCOM based modules SIM800/SIM900 or SIM70xx. Module is written in C99 and is independent from used platform. Its main targets are embedded system devices like ARM Cortex-M, AVR, PIC and others, but can easily work under Windows, Linux or MAC environments.

Read first: Documentation

Features

• Supports SIM800/SIM900 (2G) and SIM7000/SIM7020 (NB-Iot LTE) modules
• Platform independent and very easy to port
  • Development of library under Win32 platform
  • Provided examples for ARM Cortex-M or Win32 platforms
• Written in C language (C99)
• Allows different configurations to optimize user requirements
• Supports implementation with operating systems with advanced inter-thread communications
  • Currently only OS mode is supported
  • 2 different threads handling user data and received data
    • First (producer) thread (collects user commands from user threads and starts the command processing)
    • Second (process) thread reads the data from GSM device and does the job accordingly
• Allows sequential API for connections in client and server mode
• Includes several applications built on top of library:
  • MQTT client for MQTT connection
• User friendly MIT license

Contribute

Fresh contributions are always welcome. Simple instructions to proceed::

1. Fork Github repository
2. Respect C style & coding rules used by the library
3. Create a pull request to develop branch with new features or bug fixes

Alternatively you may:

1. Report a bug
2. Ask for a feature request