Why FileError happens when configFPGA again?

FrontPanel
1

Hi,
I make two different bit files for FPGA to input and output data.
i can switch these two model free by load these two file(ConfigureFPGA) before my PC communicate with FPGA. But after FPGA have worked if i want to change work model and then function ConfigureFPGA() will return FileError, I want to know why it happens and what’s this error info means.
My OS： Professional Version 2002 SP3
Opal Kelly Type : XEM3010 Firmware version :V3.1
Develop language: C# .NET 2.0

 Many thanks for your help!

Jinxing

2

FileError is returned when ConfigureFPGA cannot access the file. (such as when you try to open a file that doesn’t exist)

3

i have loaded this file before communicate with FPGA, so is there other reason causing FileError?

4

It there any probability that when ConfigureFPGA() method finished it don’t release this bit file?

5

This doesn’t seem to be the case. Our test procedures re-use the same bitfile over and over with ConfigureFPGA and do not have an issue. Also, you can load the same file repeatedly with the FrontPanel application.

ConfigureFPGA is a simple wrapper for ConfigureFPGAFromMemory that includes the opening and reading of the file. You could write the file routines yourself and see where they fail for your system.