41dac3e44e
修复MMC DMA破坏中断向量内存位置的问题，因为这里没有其他链接描述符。 在程序较小时该问题不容易出现，因为此时中断向量保留在缓存中。 Fix for MMC DMA corrupting interrupt vectors' memory location since there is no other link descriptor. This is not noticeable if the program is small, because the interrupt vectors stay in cache. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> |
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| bsp | ||
| components | ||
| documentation | ||
| examples | ||
| include | ||
| libcpu | ||
| src | ||
| tools | ||
| .gitattributes | ||
| .gitignore | ||
| .travis.yml | ||
| AUTHORS | ||
| ChangeLog.md | ||
| Kconfig | ||
| LICENSE | ||
| README.md | ||
| README_zh.md | ||
README.md
RT-Thread
中文页 |
RT-Thread is an open source IoT operating system from China, which has strong scalability: from a tiny kernel running on a tiny core, for example ARM Cortex-M0, or Cortex-M3/4/7, to a rich feature system running on MIPS32, ARM Cortex-A8, ARM Cortex-A9 DualCore etc.
Overview
RT-Thread RTOS like a traditional real-time operating system. The kernel has real-time multi-task scheduling, semaphore, mutex, mail box, message queue, signal etc. However, it has three different things:
- Device Driver;
- Component;
- Dynamic Module
The device driver is more like a driver framework, UART, IIC, SPI, SDIO, USB device/host, EMAC, MTD NAND etc. The developer can easily add low level driver and board configuration, then combined with the upper framework, he/she can use lots of features.
The Component is a software concept upon RT-Thread kernel, for example a shell (finsh/msh shell), virtual file system (FAT, YAFFS, UFFS, ROM/RAM file system etc), TCP/IP protocol stack (lwIP), POSIX (thread) interface etc. One component must be a directory under RT-Thread/Components and one component can be descripted by a SConscript file (then be compiled and linked into the system).
The Dynamic Module, formerly named as User Applicaion (UA) is a dynamic loaded module or library, it can be compiled standalone without Kernel. Each Dynamic Module has its own object list to manage thread/semaphore/kernel object which was created or initialized inside this UA. More information about UA, please visit another git repo.
Board Support Package
RT-Thread RTOS can support many architectures:
- ARM Cortex-M0
- ARM Cortex-M3/M4/7
- ARM Cortex-R4
- ARM Cortex-A8/A9
- ARM920T/ARM926 etc
- MIPS32
- x86
- Andes
- C-Sky
- RISC-V
- PowerPC
License
RT-Thread is Open Source software under the Apache License 2.0 since RT-Thread v3.1.1. License and copyright information can be found within the code.
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*/
Since 9th of September 2018, PRs submitted by the community may be merged into the main line only after signing the Contributor License Agreement(CLA).
Usage
RT-Thread RTOS uses scons as building system. Therefore, please install scons and Python 2.7 firstly. So far, the RT-Thread scons building system support the command line compile or generate some IDE's project. There are some option varaibles in the scons building script (rtconfig.py):
CROSS_TOOLthe compiler which you want to use, gcc/keil/iar.EXEC_PATHthe path of compiler.
In SConstruct file:
RTT_ROOT This variable is the root directory of RT-Thread RTOS. If you build the porting in the bsp directory, you can use the default setting. Also, you can set the root directory in RTT_ROOT environment variable and not modify SConstruct files.
When you set these variables correctly, you can use command:
scons
under BSP directory to simplely compile RT-Thread RTOS.
If you want to generate the IDE's project file, you can use command:
scons --target=mdk/mdk4/mdk5/iar/cb -s
to generate the project file.
NOTE: RT-Thread scons building system will tailor the system according to your rtconfig.h configuration header file. For example, if you disable the lwIP in the rtconfig.h by commenting the #define RT_USING_LWIP, the generated project file should have no lwIP related files.
Contribution
Please refer the contributors in the github. Thank all of RT-Thread Developers.