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The Xilinx MicroBlaze soft embedded processor executes then the command. Skilled users can extend the API command set themselves.

Generation 2

DLL files:

Documentation:

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A binding from Python to DEWESoft TE USB API is possible through the ctypes function library.

Generation 3

Trenz Electronic USB FX2 APIs

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distributed with the Cypress SuiteUSB 3.4 (or later).
Trenz Electronic USB FX2 APIs do not use handles.

TE_USB_FX2_CyAPI APIs (C++)

API files:

  • TE_USB_FX2_CyAPI TE_USB_FX2_CyAPI.dll is open source but CyAPI.lib is not. Nevertheless, its source code can be requested from Cypress under non disclosure agreement.

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  • impossible to directly access CyAPI.lib classes and functions to extend Trenz Electronic TE_USB_FX2_CyAPI.dll libraries with other classes and functions;
  • no support of multi-thread programming (but still support of multi-process programming).

TE_USB_FX2_CyUSB API (.NET)

API files:

  • TE_USB_FX2_CyUSBTE_USB_FX2_CyUSB.dll is open source but CyUSB.dll is not. Nevertheless, its source code can be requested from Cypress under non disclosure agreement.

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TE_USB_FX2_CyUSB.dll has no binding to Python because it is pure .NET CLR code that cannot be compiled as a COM object. It is a managed Microsoft .NET class library that can be used with all languages of the NET Framework (Visual Basic, Managed C++, C#, …) or other .NET infrastructures (such as IronPython).
If the user application is mainly made of C# code, it is convenient to use IronPython.If the user application is mainly made of Python, it is convenient to use Python for .NET package.

Differences Between TE_USB_FX2_CyAPI (C++) APIs and TE_USB_FX2_CyUSB (.NET) API

TE_USB_FX2_CyAPI (C++) APIs and TE_USB_FX2_CyUSB (.NET) API do not have the same signature although they are very similar. The signature of the pure extern C code library version of TE_USB_FX2_CyAPI APIs available for developers (codename: simplified TE_USB_FX2_CyAPI APIs) is slightly different from the two signatures above.
TE_USB_FX2_CyUSB (.NET) API is intrinsically cleaner than TE_USB_FX2_CyAPI (C++) APIs because CyUSB.dll is intrinsically cleaner than CyAPI.lib.
Please note that CCyUSBDevice Cypress class in the Cypress CyAPI C++ API is actually the list of all USB devices currently served by a Cypress USB driver derivative (e.g. Cypress generic USB device or Trenz Electronic USB FX2 device). For ease of understanding and convenience, Trenz Electronic named the corresponding variable as USBdevList.

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Table: SetBata/GetDate naming exception.

Possible Future Work

A pure extern C code library version of TE_USB_FX2_CyAPI (C++) APIs and TE_USB_FX2_CyUSB (.NET) API would

  • ease binding from Python or another programming language, but also
  • make impossible to directly access CyAPI.lib classes and functions to extend Trenz Electronic TE_USB_FX2_CyAPI.dll libraries or CyUSB.lib classes and methods to extend Trenz Electronic TE_USB_FX2_CyUSB.dll library.