RT thread learning notes (I) -- configure RT thread development environment

 Preface

I came into contact with a strange name by chance ---RT-Tread, Think about it , From its manual, I found that this strange embedded operating system has many excellent performances , So I made up my mind to study . It's recorded below RT-Thread Learning process , Please correct any mistakes .

Software environment ：Win7,Keil MDK 4.72a, IAR EWARM 7.2, GCC 4.2

Hardware environment ：Armfly STM32F103ZE-EK REV 3.0 Development board

Reference article ：

【1】R​T​-​T​h​r​e​a​d​ with ​ Set up ​ open ​ Hair ​ Ring ​ habitat ​ hand ​ book

【2】RT-Thread Tutorial series Click to open the link

【3】STM32 + RT Thread OS Learning notes

1,RT-Thread Development environment configuration

1.1 install python as well as SCons Building tools

RT-Thread Use SCons As the default build tool .SCons be based on Python Development , So we need to install python, Install again SCons.

(1), install python, The version number is 2.7 Click to open the link , Download and install , Here's the picture . But it's not necessary , You can use 2.6 Or other versions .python3.2 Version cannot run scons

Click next all the way （next） that will do . By default , This program will be installed in C:\Python27 Under the table of contents , We will add this directory to the system
PATH variable . The method is as follows ：

In the computer （windows 7） Right click on , choice 【 attribute 】, Then click... In the pop-up dialog box 【 Advanced system setup 】, The system properties dialog box pops up -> senior -> environment variable , Here's the picture . Note that the fifth step is “; C:\Python27 ”, The semicolon is the symbol in the English input state .

then , Click OK to close the dialog box .

(2), install SCons

Scons Download address ： http://sourceforge.net/projects/scons/files/scons/2.3.2/, The software version is 2.3.2 Choose Microsoft here window edition , After downloading, click Install ,SCons Will be automatically installed to python The installation directory is C:\Python27\Scripts Catalog , Here's the picture .

Refer to the previous section , Add the above path to the system as well PATH variable . use echo %path% Command can see the result of adding system variables , Here's the picture .

1.2, Install build toolchain

RT-Thread Can support GCC,Keil MDK perhaps IAR Of EWARM One or all of the compilation tools .

(1), About GCC, Recommend an article sourcery g++ lite Establish a cross compilation loop , It's related GCC Introduction to , Download address is  codesourcery, Need to register , The version installed here arm-2012.09-63-arm-none-eabi.exe, Here's the picture , You can change the installation location .

Install by default , After the end ,gcc The installation path of will be automatically added to the system environment variable .

(2),KeilMDK and IAR EWARM install , Because it is commercial software , No introduction here .

2, Compile testing

2.1, Source directory structure

adopt SVN Download to local SVN The source code structure of the directory is shown in the figure below .

2.2, To configure SCons Script

Enter into RT-Thread Board level engineering catalogue bsp below , You can see many development board project directories , The existing development board here is armlay( Anfulai ) Of STM32F103ZE-EK REV3.0, So just put stm32f10x Copy the directory together with the file and rename it stm32f103ze-ek(armfly), As shown in the bottom left . Then enter the directory and find readme.txt and rtconfig.py, As shown in the bottom right .

In the above file ：

rtconfig.py This file must be modified .

rtconfig.h This file is used for cropping rt-thread（ Modify according to your needs ）

open readme.txt, You can see the following ：

-- cn --
Generate project files as needed :
1. modify rtconfig.py :
CROSS_TOOL='keil'           # Tool chain used
STM32_TYPE = 'STM32F10X_HD' #STM32 Corresponding model .
2. modify rtconfig.h Configure the required functions .
2. perform scons --target=mdk  Generate MDK Engineering documents .

note: Need to install python,scons.

-- en --

The above content tells us that we need to specify the compiler and the chip type on the development board .

RT-Thread Through SCons Three compilers are supported , The choice of compiler is rtconfig.py It is specified in , If you follow the above steps to install python and SCons, So it can be rtconfig.py Right click Edit with IDLE Editor open ,  Some of the contents are as follows ( The red bold part is the result of modification according to your actual environment and needs )：

explain ： The above compilation tool defaults to IAR Compiler Links , With windows Platform as an example , therefore , The paths are all windows Path style , about linux, Just change the path to linux Style is fine . Add a small before the path r, Indicates that the following content does not need to be escaped , because windows The path style is to use '\' As a separator , Conflicts with escape characters .

SCons Common options for commands ：

scons -c

This command will clear the compiled file

scons -j4

According to the parallel 4 Two tasks running at the same time , Applicable to multi-core and multi-threaded .

scons --target=mdk4 -s

Generate project.uvproj, But you need to check the current bsp Does the directory provide template.uvproj file , Because this command depends on template.uvproj or template.uv2.

scons --target=iar -s

Generate project.ewp and project.eww, But it also depends on the current bsp Is it provided in the directory? Is it provided template.ewp Engineering formwork .

Save the above file , open cmd Command line window , Then input directly E: Use cd Command switch to bsp\stm32f103ze-ek(armfly) Under the table of contents , Here's the picture .

Then input scons Back carriage return , The operation results are as follows ：

And then put the rtconfig.py Script CROSS_TOOLS Revised as follows ：

CROSS_TOOLS='iar'

After the save , Re execution scons command , give the result as follows ：

Then change the variable above back , as follows ：

CROSS_TOOLS='keil'

Save after modification , Re execution scons command

It is known from the above test ,iar and gcc This error will not occur . But with keil There is an alarm and a link error in the compilation result .

Be careful ： At this point you may encounter an error , The alarm prompt is that the link is not found ARM library ,link error .

Search online and say yes scons Build engineering components cannot be automatically added , I didn't understand , Can only be put on hold , It needs to be studied in the future .

Only this and nothing more , We are stm32f103ze-ek The development board builds a RT-Thread development environment .