This is my first try with PSoC.  I tried to get my dev kit, cy8ckit-030 to look like a serial com port on my PC.  Did my own coding coding. When I connect to the PC, Windows says 'USB Device Not Recognized'.  I futzed around for a few hours and it's still not working.  Tried to load  USBUART.inf, but it doesn't seem to do anything.  I then discovered  an example project in Creator 2.0, USB_UART.  Unfortunately, it has the same problem.  What's wrong???  Do I need a *.sys file??

TIA,

John

Got it working.  Code was set to 3V, hardware jumpers to 5V

That's a very common mistake many users do.

 It is always a good practice to make your code dependent on the voltage setting in the design wide resource tab. It will always work and this error can be eliminated.

Can you explain how to do this? The examples from Cypress use hard-coded voltage settings, so they cannot be used as reference for that :(

Thanks!

When you call the USBFS_Start() API, the second parameter determines the operating voltage of the USB component. To make the system dependent on the design wide resource configuration this parameter can be set to "USBFS_DWR_VDDD_OPERATION".

Hence the API would look like, USBFS_Start(0, USBFS_DWR_VDDD_OPERATION); 

And you need to configure the design wide resource anyway for proper calculations if you have any analog components depenedent on VDDA in your design.