56529d2944
- migrated /README are removed from /boards - there are a lot of READMEs that should be further converted to rst. At the moment they are moved to Documentation/platforms and included in rst files
51 lines
1.8 KiB
ReStructuredText
51 lines
1.8 KiB
ReStructuredText
==============
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nuvoTon NUC120
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==============
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This is a port of NuttX to the nuvoTon NuTiny-SDK-NUC120
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that features the NUC120LE3AN MCU.
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**STATUS**. Initial support for the NUC120 was released in NuttX-6.26.
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This initial support is very minimal: There is a NuttShell
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(:ref:`NSH <nsh>`) configuration that might be the basis for an
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application development. As of this writing, more device drivers are
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needed to make this a more complete port. Refer to the NuttX board
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`README <https://github.com/apache/nuttx/blob/master/boards/arm/nuc1xx/nutiny-nuc120/README.txt>`__
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file for further information.
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**Memory Usage**. For a full-featured RTOS such as NuttX, providing
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support in a usable and meaningful way within the tiny memories of the
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NUC120 demonstrates the scalability of NuttX. The NUC120LE2AN comes in a
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48-pin package and has 128KB FLASH and 16KB of SRAM. When running the
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NSH configuration (itself a full up application), there is still more
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than 90KB of FLASH and 10KB or SRAM available for further application
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development).
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Static memory usage can be shown with ``size`` command:
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NuttX, the NSH application, and GCC libraries use 34.2KB of FLASH
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leaving 93.8KB of FLASH (72%) free from additional application
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development. Static SRAM usage is about 1.2KB (<4%) and leaves 14.8KB
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(86%) available for heap at runtime. SRAM usage at run-time can be shown
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with the NSH ``free`` command:
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You can see that 10.0KB (62%) is available for further application
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development.
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**Development Environments:** 1) Linux with native Linux GNU toolchain,
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2) Cygwin/MSYS with Cygwin GNU toolchain, 3) Cygwin/MSYS with Windows
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native toolchain, or 4) Native Windows. A DIY toolchain for Linux or
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Cygwin is provided by the NuttX
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`buildroot <https://bitbucket.org/nuttx/buildroot/downloads/>`__
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package.
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Supported Boards
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================
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.. toctree::
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:glob:
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:maxdepth: 1
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boards/*/*
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