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Generation 2

DLL files:

• DEWESoft_API

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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TE_USB_FX2_CyAPI APIs are not pure extern C code libraries because an external creation of a class instance defined in CyAPI.h (CyAPI.lib) is required.
Advantage:

• possible Possible to directly access CyAPI.lib classes and functions to extend Trenz Electronic TE_USB_FX2_CyAPI.dll libraries with other classes and functions (for example Plug and play functions and asynchronous multithread bulk data trasfers).
• Support support of multi-thread and multi-process programming.

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A pure extern C code library version of TE_USB_FX2_CyAPI APIs (codename: simplified TE_USB_FX2_CyAPI APIs) is available for developers.
Advantage:

• binding Binding to Python requires just the ctypes function library rather than by resorting to a wrapper.

Disadvantages:

• impossible 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 No support of multi-thread programming (but still support of multi-process programming).

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• is a dynamic library;
• has only one version for both Microsoft Windows 32 and 64 bit;
• is not a COM (Component Object Model) object, so it cannot be called by C++ or Python code;
• is a managed Microsoft .NET class library that can be used with any programming language of the .NET Framework (Visual Basic, Managed C++, C#, …);
• is open source (can be modified and extended).

Advantage:

• Possible to directly access CyUSB.dll classes and functions to extend Trenz Electronic TE_USB_FX2_CyUSB.dll

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• libraries with other classes and functions (for example Plug and play functions and asynchronous multithread bulk data trasfers)
• Support of multi-thread and multi-process programming.
• 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).

Disadvantage:

• 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.  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

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At this moment a simplified TE_USB_FX2_CyAPI (C++) API is used with Open_FUT (gen3) tool but it is not thread safe.

Libusb and libusbx libraries

For Windows, see section "WinUSB driver and Zadig (Generation2, Generation 3, Cypress default and/or custom firmware)" of  Device Driver Layer.

For Linux, see Linux_FUT.

For Mac OS X, see "AN74505 - EZ-USB® FX2LP™ - Developing USB Application on MAC OS X using LIBUSB".