Reading data from USB port....

[maharaja pandian]

hi, I want to develop an application in VC++ , which can read data from USB port but i try with getting hardware address for USB port like parallel port 0x378,0x379,0x37A , at last i can't able to do for USB port can any one knew means ,plz forward the corresponding things If it is possible or not it's very urgent send reply

[stefanmihaimoga]

Hi, it's a little harder to read from an USB port instead of a RS232 port, but here's some source code for you: http://www.lvr.com/hidpage.htm[^] (Resources for Developers of USB Devices in the Human Interface Device Class)

[Roger Stoltz]

You have to communicate with a device driver for the USB device since you cannot access hardware from user mode. Most USB device drivers adds one or more virtual COM ports that can be used the same way as any ordinary COM port, i.e. using ::CreateFile(), ::ReadFile(), ::WriteFile() and so on. Have a look in Hardware Programming section[^] for more info about how to communicate with COM ports and similar. Hope this helps -- Roger

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It's supposed to be hard, otherwise anybody could do it!

[Lost User]

You don't communicate with the USB port in the same way as, say, a COM port, but with the device attached to the USB port via the driver. The tigress is here :-D

[ThatsAlok]

try http://www.codeproject.com/system/cserialcom.asp