The MR framework is a lightweight framework designed specifically for embedded systems. It fully considers the resource and performance requirements of embedded systems.

By providing standardized device management interfaces, it greatly simplifies the development of embedded applications and helps developers quickly build embedded applications.

The framework provides developers with standardized open, close, ioctl, read, write and other interfaces. It decouples the applications from the low-level hardware drivers. The applications do not need to know the implementation details of the drivers.

When the hardware changes, the applications can seamlessly migrate to the new hardware by only adapting the low-level drivers. This greatly improves the reusability of software and its extensibility to new hardware.

Key characteristic

Standardized device access interfaces
Decoupled application and driver development
Simplified lower-level driver and application development
Lightweight and easy to use with low resource usage
Modular design with loose coupling between components for independent development and extremely low hardware migration costs
Supported in bare-metal and operating system environments

Major component

Device framework: Provides standardized device access interfaces
Memory management: Dynamic memory management
Tools: Common data structures like lists, queues, balanced trees etc.
Various functional components

Standardized device interface

All operations of the device can be implemented through the following interfaces:

interface	describe
mr_dev_register	Registered device
mr_dev_open	Open device
mr_dev_close	Close device
mr_dev_ioctl	Control device
mr_dev_read	Read data from the device
mr_dev_write	Writes data to the device
mr_dev_isr	Device interrupt control

Configuration tool

MR provides Kconfig visual configuration tool that developers can configure without deep knowledge of the source code.

Kconfig will automatically generate the configuration options interface based on the configuration file. Developers can select the functional components that need to be enabled and set relevant parameters through simple operations.

By modifying parameters, you can quickly tailor the required functions. After the configuration is complete, the Python script automatically generates the configuration file.

Directory structure

name	describe
bsp	Board support package
components	Components
device	Device file
document	Document
driver	Driver file
include	Library header file
source	Library source file
Kconfig	Configuration files
kconfig.py	Automatic configuration script
LICENSE	Open-source license