General

USB2FPGA card is distributed with the Cesys CeUsb2 software kit which consists of drivers, APIs and test programs to control the Cesys USB devices. It can work both on Linux and Windows platforms.



Product Documentation

Tho following documents are available:

USB2FPGA User's Manual
CeUSB2 Software kit documentation
CEUSB2 Installation


CEUSB2 Designers Guide- General CeUsb2 design guide. It gives you a general view of the CeUsb2 design architecture.

CeUSB2 Driver Specification- CeUsb2 driver specifications documentation. It describes the programming interface for the CeUs2b driver. For advanced programmers only.

CeUSB2 Loader Driver Specification - CeUsb2 loader driver specifications documentation. It describes the programming interface for the CeUs2b USB loader driver. For advanced programmers only.

CeUSB2 General Purpose Firmware Interface Specification - CeUsb2 generic firmware specifications documentation. It describes the programming interface between CeUsb2 drivers and the general purpose firmware. For advanced programmers only.

CeUSB2 API Specification - CeUsb2 Application Programming Interface (API) documentation.

CeUSB2 GUI Specification- CeUsb2 Graphical User Interface (GUI)

CEUSB2 COM API Specifications - CeUsb2 COM API documentation.

CEUSB2 Diag User's guide - CeUsb2 diagnostic program (CeUsb2Diag.exe) documentation.

USB2FPGA Schematics - USB2FPGA schematics in pdf format.

Possible solutions are below. Try them in the top to bottom order untill your board works correctly.

• Plug and unplug the device for several times to see if it is working. Be sure that there is not a contact problem with the USB connector.
• Check your BIOS settings to see if USB (or USB2) support is enabled.
• Check if your PC motherboard manufacturer has a BIOS update.
• Install the latest service pack for your operating system.

The general purpose firmware distributed with the board has this feature. When you are performing a bulk read operation, your buffer size must be at least 512 bytes long. But this is not a feature of USB2FPGA. In another firmware it can be implemented different.

You should first register the CeUsb2 COM DLL with regsvr32 program as follows:

regsvr32 CeUsb2ComApi.dll

It really depends on the firmware that is running on the board. The generic firmware uses 3 cycles for reading and 2 cycles for writing out of 7 GPIF cycles. With this configuration with bulk transfer we get maximum:

~26 Mbytes/sec when writing
~20 Mbytes/sec when reading

Yes you can actually. However, to make it compatible with CeUsb2 software you have to obey some rules. For more information please check the generic firmware interface documentation, CeUsb2gfw.pdf .

Interface signals are generated with the FX2's GPIF engine. You can change the timing of these signals in two ways

• By writing your own firmware.
• By using CeUsb2 software, and loading your own GPIF waveform data.

USB2FPGA Linux driver is developed on Linux SuSE 8.2 platform. It is also tested on SuSe 8.1 and Redhat 9.0 platforms. To recompile the driver you should first install the correspoinding kernel sources of your distribution. Every Linux distribution has its own directory structure. Therfore you should change the Makefile of the project that you are compiling, so that it can find the necessary directories where it can search for the C header files.

For example ceusb2 driver project has the following line in its Makefile:

INC = -I. -I/usr/src/linux/include -I../../inc

You should change "-I/usr/src/linux/include" with the include directory of the linux source distribution.

After you mkae the necessary changes as described in FAQ 5.7, open a terminal and run the build script file as shown below:

./build rel
./build install

Previously, Windows drivers are installed manually by the user. Now USB2FPGA has its own Windows installation program. Just run the setup.exe program found in the win32 directory.

Normally, USB2FPGA device can work on all operating systems which support USB2.0 or at east USB1.1. The current USB2FPGA software development kit includes software for the following platforms:

• Windows 2000
• Windows XP
• Linux

If you need support for another operating system ( also real time OSs) please contact Cesys. Check section 6 for contact information.

Unfortunatelly no. USB2FPGA can work only connected to a PC or workstation. Future products of Cesys might include this feature.

Yes, Xilinx ISE WebPack is compeletely free. You can impement your compelete design with this tool. For more informatin check http://www.xilinx.com

Pavel,

Thank you for reporting the dead links.
I repaired them.
You can also download the documents here:

cesys.com/download_en.html

Manfred Kraus