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There are some major differences between the two DLLs.
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feature | Dewesoft C++ DLL | Simplified Trenz Electronic C++ DLL | programming language | C, C++, Python | C, C++, Python | architecture | standard
(TE0300DLL.dll) | Standard (the stacked nature of the solution is hidden)
(TE_USB_FX2_CyAPI.dll requires Cypress CyAPI.lib); | Handles | present | absent | structures | embedded | Embedded (defined in Cypress CyAPI.h but invisible to user) | parameters* | less | more | freedom* | less | more | | buffer size | 2 Kbyte (fixed) | 4 Kbyte or more (it can be changed) |
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Both the Simplified Trenz Electronic C++ DLL and this porting guide are fully working developer versions but are not supported by Trenz Electronic till the official release, currently not yet planned. |
Function Declarations
#define TE_USB_FX2_CYAPI extern "C" __declspec(dllexport)
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These two functions are called internally by function TE_USB_FX2_Open().
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| This Simplified DLL is not thread safe. |
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This Simplified DLL is successfully used in the Python (using ctypes to import/export c types) program Open_FUT (Gen3) to program USB FX2 microcontroller's firmware and SPI Flash/FPGA's bitstream. This Simplified DLL is full extern C (C compatible). |
Function Translation
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| title | Function translation between DLLs |
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Dewesoft C++ DLL | Simplified Trenz Electronic C++ DLL | HANDLE m_handle = 0; | Nothing (you must charge the DLL) | cout << endl << TE0300_ScanCards() << endl; | cout << endl << TE_USB_FX2_ScanCards() << endl; | | TE0300_Open(&m_handle, 0)!=0 | TE_USB_FX2_Open(0, TimeOut, DriverBufferSize)!=0 | | TE0300_Open(&m_handle, 1)!=0 | TE_USB_FX2_Open(1, TimeOut, DriverBufferSize)!=0 | TE0300_Close(&m_handle); | TE_USB_FX2_Close(); | TE0300_SendCommand(handle, cmd, cmd_length, reply, &reply_length, timeout) | TE_USB_FX2_SendCommand( cmd, cmd_length, reply, reply_length, timeout) | | TE0300_SetData(handle, data, packetlen, PI_EP8) | TE_USB_FX2_SetData(data, packetlen) | | TE0300_GetData(handle, data, &packetlen, PI_EP6, 1000) | TE_USB_FX2_GetData(data, packetlen) |
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| The instantiation of driver buffer happens in TE_USB_FX2_Open(): the user must specify TimeOut and DriverBufferSize. |
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