2023-10-21 17:08:13 +02:00
|
|
|
==============
|
|
|
|
|
nuvoTon NUC120
|
|
|
|
|
==============
|
|
|
|
|
|
|
|
|
|
This is a port of NuttX to the nuvoTon NuTiny-SDK-NUC120
|
|
|
|
|
that features the NUC120LE3AN MCU.
|
|
|
|
|
|
|
|
|
|
**STATUS**. Initial support for the NUC120 was released in NuttX-6.26.
|
|
|
|
|
This initial support is very minimal: There is a NuttShell
|
|
|
|
|
(:ref:`NSH <nsh>`) configuration that might be the basis for an
|
|
|
|
|
application development. As of this writing, more device drivers are
|
|
|
|
|
needed to make this a more complete port. Refer to the NuttX board
|
|
|
|
|
`README <https://github.com/apache/nuttx/blob/master/boards/arm/nuc1xx/nutiny-nuc120/README.txt>`__
|
|
|
|
|
file for further information.
|
|
|
|
|
|
|
|
|
|
**Memory Usage**. For a full-featured RTOS such as NuttX, providing
|
|
|
|
|
support in a usable and meaningful way within the tiny memories of the
|
|
|
|
|
NUC120 demonstrates the scalability of NuttX. The NUC120LE2AN comes in a
|
|
|
|
|
48-pin package and has 128KB FLASH and 16KB of SRAM. When running the
|
|
|
|
|
NSH configuration (itself a full up application), there is still more
|
|
|
|
|
than 90KB of FLASH and 10KB or SRAM available for further application
|
|
|
|
|
development).
|
|
|
|
|
|
|
|
|
|
Static memory usage can be shown with ``size`` command:
|
|
|
|
|
|
|
|
|
|
NuttX, the NSH application, and GCC libraries use 34.2KB of FLASH
|
|
|
|
|
leaving 93.8KB of FLASH (72%) free from additional application
|
|
|
|
|
development. Static SRAM usage is about 1.2KB (<4%) and leaves 14.8KB
|
|
|
|
|
(86%) available for heap at runtime. SRAM usage at run-time can be shown
|
|
|
|
|
with the NSH ``free`` command:
|
|
|
|
|
|
|
|
|
|
You can see that 10.0KB (62%) is available for further application
|
|
|
|
|
development.
|
|
|
|
|
|
|
|
|
|
**Development Environments:** 1) Linux with native Linux GNU toolchain,
|
|
|
|
|
2) Cygwin/MSYS with Cygwin GNU toolchain, 3) Cygwin/MSYS with Windows
|
|
|
|
|
native toolchain, or 4) Native Windows. A DIY toolchain for Linux or
|
|
|
|
|
Cygwin is provided by the NuttX
|
|
|
|
|
`buildroot <https://bitbucket.org/nuttx/buildroot/downloads/>`__
|
|
|
|
|
package.
|
2023-10-25 20:28:04 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
Supported Boards
|
|
|
|
|
================
|
|
|
|
|
|
|
|
|
|
.. toctree::
|
|
|
|
|
:glob:
|
|
|
|
|
:maxdepth: 1
|
|
|
|
|
|
|
|
|
|
boards/*/*
|
