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USB Low-Full-High Speed Peripherals

Anonymous
Not applicable

I have two hub downlining, each of these has 3 devices.

   

When I start I have no problem, the same when I load one firmware of mine on the devices attached to the first hub, the top one.

   

When I load the same firmware on one device atteched to the second hub, the bottom one, it seems to desappear, and one of the devices attached to the first hub stop working too.

   

Is it a limit of the driver CyUsb.sys or the API CyAPI?

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2 Replies
Anonymous
Not applicable

CyUSB.sys or CyAPI does not have a limitation like that. What is the device being used?? FX, FX2LP??

   

Did you by any chance take a CATC trace to see what is happening at the USB bus level?

   

What is the make of the hubs in question? Have they passed USB compliance? Did your device pass USB compliance?

   

Regards,

   

Anand

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Anonymous
Not applicable

The devices are FX, the hubs ad the devices are USB compliant, made by System-Group S.p.a.

   

Honestly, i did not take a CATC trace to see whot's happening: I will look and reply.

   

Regards,

   

Emanuele

   
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