Need help from programming masters (USB hub)

Nov 08, 2009 3 Replies
D

Hi guys! I am just wondering if you could give some codes regarding the operation of the USB hub. Since a USB host is capable of communicating to a single device, I was thinking of using the USB hub as the device. The communication is from HOST to HUB. However, I need a piece of code to communicate to the hub to enumerate it and learn about physical bus events like device connect/disconnect to the downstream ports, and send bus resets out the hub ports. Some says this is simple but I dont know where to start.


Looking forward from the masters.



God Bless. dz



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L

You are basically asking for a complete USB host stack.

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There is nothing simple about it.

Leo Havmøller.

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A

Get Jan Axelson's "USB Complete" book which is a good, straightforward introduction to all things USB. This is much easier to deal with than trying to plough through the USB specifications.

Enumeration of a hub is the same as that of any other USB device. However, as Leo says, it sounds as if you need a complete host stack which is non-trivial to write.

Andrew

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D

of

events

resets

start.

Thanks for the reply.

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