PORTS Forum

Ports and Interfaces => USB => Topic started by: s_talebi on November 20, 2010, 10:17:39 am

Title: Problem with Device Recognition (PIC18F4550)
Post by: s_talebi on November 20, 2010, 10:17:39 am

Dear Jan,

To build a USB platform for data transfer, I followed the instructions from http://www.create.ucsb.edu/~dano/CUI/ (http://www.create.ucsb.edu/~dano/CUI/) to create a USB interface with PIC18F4550, whose image is attached to this post.

I used MCHPFSUSB framework to implement a HID device and I could send and receive data from PC.
Unfortunately, the board doesn't work with all PCs. In fact most PCs fail to recognize the device properly and in most cases I've ended up with the "Device not recognized" message from Windows.

Your helpful comment for resolving this issue is highly appreciated.

Thank you in advance

S. T.

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Title: Re: Problem with Device Recognition (PIC18F4550)
Post by: Jan Axelson on November 20, 2010, 11:35:43 am

A protocol analyzer would show what is happening on the bus and might offer a clue.

From the host side, check the setupapi log file. Do a web search on setupapi log file to find out how.

Jan