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getting_started_as_a_gui_stack_developer.md

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Getting Started as a GUI stack developer

"I am interested in the implementation"

  • We apologize that at the current stage, there is no sufficient guidance or documents about:

    • How the library is implemented
    • How to contribute
    • How to add new features
    • What are the design principles behind the code

  • Some design considerations:

    • The library supports Arm Compiler 5 (Deprecated), Arm Compiler 6, GCC, LLVM and IAR.
    • The library supports ALL Cortex-M processors. There should be no problem working with existing Cortex-M processors, i.e. Cortex-M0/M0+/M1/M3/M4/M7/M23/M33/Star-MC1/M35P/M55/M85. If you find any issues, please feel free to let us know.
    • The library is designed with some OOPC (Object-Oriented Programming with ANSI-C) methodologies. The bottom line is that any methods and tricks adopted in this library should come with no or very little cost.

  • This library is compliant with C11 standard together with some widely accepted GCC extensions:

  • Some of the definitions are written with the support of the Microsoft Extensions in mind ( -fms-extensions ), but the library never depends on it. This means that if programmers enable the support of the Microsoft-Extensions in their projects, they can benefit from it.

  • This library follows "Using Extensions to replace Modifications" principle

    • Keywords __WEAK and __OVERRIDE_WEAK are introduced for default functions and extensions; it is similar to the concept of "virtual functions" and "override functions" in C#.

      • arm_2d_async.c is used to override some infrastructure functions in arm_2d.c to support asynchronous mode in the programmers' mode.
      • arm_2d_helium.c is used to override some default software algorithm implementations across the library.

    • For the way of adding support for hardware accelerations. Please click here for details.