Author:: RT-Thread Development Team

Version:: 1.0.0

RT-Thread RTOS is an open source embedded real-time operating system and is designed specifically for small memory footprint platforms. The real-time and embedded characters are the most significant advantages of RT-Thread.

Real-Time Character

RT-Thread has a real-time operating system kernel, with fully preempted multi-thread scheduler, inter-thread communication with timing sensitivity and transparent interrupt handling.

Embedded Character

RT-Thread is suitable for embedded systems for small footprint characters. The kernel is implemented as a simple C library. The simplest application costs less than 1 Kbytes RAM on the ARM Cortex-M platform.

RT-Thread Architecture

RT-Thread system architecture is like:

Figure 1: RT-Thread Architecture

Kernel API

The Kernel APIs are the core APIs of RT-Thread, which supports the following features:

Multi-thread management and scheduler
Synchronization mechanisms, semaphore, recursive mutex and event set
Inter-thread communication, mailbox and message queue
Memory management, memory pool and dynamic heap memory management
Asynchronous timer

For more details, please refer to RT-Thread Kernel API

System Initialization

Once RT-Thread operating system starts up, the facility in system must be initialized firstly.

For more details, please refer to System Initialization