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USB CDC driver

Mike Sarafidis

Hi,

we are using µVision 4.71.2 and NXP LPC11U35. We have tested most of the hardware peripherals with "LPC11Uxx Keil examples New release V1.05-LPCware". The examples work fine for uart, spi, clock, timers, watchdog etc. We cannot test USB with those examples. We have tried USBHID and USBCDC examples but with no success. The device is not recognized at windows XP and windows 8. It seems that either the driver is not working or the source example. We believe that the hardware is correct and according to proposed schematic. The driver's folder contains only an inf file an no usbser.sys file. We have searched windows folder and no usbser.sys exists.

could anyone give as a hint?

thanks in advance.

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