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Debug DLL for FTDI D2XX ? Software USB Sniffer for D2XX communication ?

Started by Martin Maurer September 19, 2006
Hello,

does someone know if there is a debug dll for FTDI D2XX ? I want to trace 
every call and every data packet which is exchanged over the DLL.
There was something for CAPI (ISDN) long time ago, which i think should also 
work for D2XX. The original DLL was renamed and a new DLL was created which 
was just a wrapper and calls the original functions of the renamed DLL.

Is such a thing existing ? Or is there meanwhile a general way of doing this 
?

By the way: Is there any software USB sniffer which is able to trace USB 
communication between FTDI D2XX driver and FTDI chip itself ? Or is there 
even a description of the communication protocol itself ?

Regards,

        Martin



Martin Maurer wrote:
> Hello, > > does someone know if there is a debug dll for FTDI D2XX ? I want to trace > every call and every data packet which is exchanged over the DLL. > There was something for CAPI (ISDN) long time ago, which i think should also > work for D2XX. The original DLL was renamed and a new DLL was created which > was just a wrapper and calls the original functions of the renamed DLL. > > Is such a thing existing ? Or is there meanwhile a general way of doing this > ? > > By the way: Is there any software USB sniffer which is able to trace USB > communication between FTDI D2XX driver and FTDI chip itself ? Or is there > even a description of the communication protocol itself ? > > Regards, > > Martin
I've used a usb sniffer (sw) for that, don't remember the name, probably found it on http://www.lvr.com/usb.htm I haven't seen a description of the protocol, but you can look at the source for the Linux driver its all there. -Lasse