Qt application: segmentation fault error
 

Hi,

I'm writing an interface to an USB board using Qt libraries 3.3.3.
My goal is to program and control a fpga that is present on that board. Until now I can recognize the external board and download the firmware, but when I try to send commands to that board using the appropriate driver function, the software crash and send me a "segmentation fault "error.
I would understand if this error is due to a driver bug or if I've made an error during the compilation of my application (I've no errors or warnings during compilation).

Someone could help me?

Thank's
dr_berta

Segmentation fault means that your program tried to access memory it wasn't allowed to. I can't give any definite help without seeing the code, but two common causes are attempting to access data beyond the end of an array, or trying to access a NULL pointer. If it's not one of these, it is almost certainly some kind of other pointer problem.

Running your program in a debugger will probably help to track the problem down.

Check carefully the data/commands you pass to the driver. You probably pass them as pointers and one (or more) of them is wrong.