https://github.com/crimsonwoods/mirb-stm32f4discovery

mirb (an interpreter of mruby) port to STM32F4 Discovery board.
https://github.com/crimsonwoods/mirb-stm32f4discovery

Last synced: 2 months ago
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mirb (an interpreter of mruby) port to STM32F4 Discovery board.

• Host: GitHub
• URL: https://github.com/crimsonwoods/mirb-stm32f4discovery
• Owner: crimsonwoods
• Created: 2013-04-03T14:50:07.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2013-04-03T15:33:30.000Z (almost 12 years ago)
• Last Synced: 2024-08-03T18:16:10.062Z (6 months ago)
• Language: C
• Size: 441 KB
• Stars: 4
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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• AwesomeInterpreter - mirb-stm32f4discovery

README

        
mirb-stm32f4discovery

====

This project is __experimental__ implementation.

What's 'mruby'

----

See this: https://github.com/mruby/mruby

What's 'STM32F4 Discovery'

----

Very low-cost ARM processor board.





See this: http://www.st.com/web/en/catalog/tools/PF252419

Ready to build

----

1. get Codesourcery toolchain for ARM processor.

2. setup your environment variable PATH to make 'arm-none-eabi-gcc' can run.

3. get 'mruby' source code from github.

4. build 'libmruby'.

5. get 'mirb-stm32f4discovery' source code.

commands:

    $ git clone https://github.com/mruby/mruby.git

    $ cd mruby

    $ vi build_config.rb

    $ make

    $ cd ..

    $ git clone https://github.com/crimsonwoods/mirb-stm32f4discovery.git

Edit 'build_config.rb'

----

edit your 'build_config.rb' to build 'libmruby'.


append cross-build settings.


like this:

    MRuby::CrossBuild.new('stm32f407') do |conf|

      toolchain :gcc

    

      conf.bins = %w() # target is just only 'libmruby.a'.

    

      conf.cc do |cc|

        cc.command = 'arm-none-eabi-gcc'

        cc.flags = %w(

          -MD -Os

          -mthumb -mcpu=cortex-m3 -nostdlib -mfloat-abi=softfp -mfpu=fpv4-sp-d16

          -fsigned-char -fno-inline -ffunction-sections -mlittle-endian)

        cc.defines = %w(

          MRB_HEAP_PAGE_SIZE=256

          POOL_PAGE_SIZE=1000

          MRB_STR_BUF_MIN_SIZE=32

          MRB_PARSER_BUF_SIZE=256)

      end

    

      conf.archiver do |ar|

        ar.command = 'arm-none-eabi-ar'

      end

    end

How to build

----

commands:

    $ cd mirb-stm32f4discovery

    $ make CROSS_COMPILE=arm-none-eabi-

if build succeeded, you will get an executable binary file 'build/mirb.bin'.

How to run

----

Use STM32 ST-LINK Utility.

Console Input/Output

----

"USART2" is assigned as standard input/output port.


On STM32F4 Discovery board, 'PA3' and 'PA2' is assigned as "USART2" (PA2=USART2_TX / PA3=USART2_RX).


You can connect level conversion board to that pins.


License

----

MIT License