Author Topic: USB device open fails with error "Driver is unknown"  (Read 1644 times)

Roman Novgorodov

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USB device open fails with error "Driver is unknown"
« on: July 24, 2011, 12:42:25 pm »
Hello

If USB device activation fails with exception:

USB device open is failed. Driver is unknown

you need to install compatible driver for selected USB device.

nrComm Lib supports I/O operations with two types of drivers:
1) WinUSB
2) NrUsb.sys

nrComm Lib provides components for easy installation of needed drivers.
Both drivers are kernel signed and can be used in x86 and x64 platforms.
You can take a look sources of included demo projects:

Demos\USBIODemo\usbiodemo.dpr
Demos\USBOsrKitDemo\usbosrkitdemo.dpr
Demos\USBOsrKitDemo-WinUsb\usbosrkitdemo_winusb.dpr
Demos\USBDriverDemo\usbdrvdemo.dpr

Roman Novgorodov
DeepSoftware LLC
« Last Edit: July 17, 2012, 02:23:08 am by Roman Novgorodov »
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