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USB connection to PC MicrotronixStratixBoard

Altera_Forum
Honored Contributor II
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the other post doesnot work, so here is my question again: 

 

 

Hello everybody, 

 

I got a problem with the USB connection from the Microtronix-Stratix Board to the PC. 

The PC recognizes the board (USBChip: Cypress SL811HST configured as HOST) only under weird circumstances. 

I have to plugin my private USB-Stick (so there must be an existing USB Connection to the PC, i only got an USB Stick), have to pull out the Supply of the Micro.Board. (....and close one eye).  

When I connect now the Board to the PC, it works, ("unknow Device"). Now I can connct  

 

When I configure the SL811 as an Slave it doesnot work. when I supply the Board with power before I connect the USB-cable, it doesnot work. 

 

Has anyone an idea what the problem is? 

I don't have a windowsdriver for the USBChip right now, maybe thats a point.  

 

Another Question: 

I am trying to make a driver for the SL811HST with WinDriverUSB. For that I need to know the Vendor and Product ID. Can I choose them or are they fixed from device to device?  

Has anyone experiences with this Board and an USB-Interface to the Computer? 

 

Thank you, 

 

Roman
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