Reading data from USB port 1

[Juppo]

Hi

Im new to usb and vb but have used C before. I was hoping someone could run through how I would read data from the USB port in Visual Basic. I've read/write data to serial port before in C but can't find much about VB/USB at the moment, Can anyone help?
Im hoping to read data from the usb port and display the reconstructed sinewave on a graph and store its details in a database.

 

[nigelrivett]

You generally don't interact wit the USB port but with the driver for the device attached. How you interact with that driver will be specific to the driver.

Or are you asking how to write a USB port driver for a device?

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[tedsmith]

I am interested in this subject too.
How would I go about creating a simple USB link between 2 applications running on 2 computers like you can with MsComm?
Are there drivers or ActiveX controls for this?

 

[nigelrivett]

Here

http://www.ftdichip.com/FTDriver.htm

You can download drivets to make the usb look like a com port

======================================
Cursors are useful if you don't know sql.
DTS can be used in a similar way.
Beer is not cold and it isn't fizzy.

 

[tedsmith]

Thanks Nigel

 

[Juppo]

>How would I go about creating a simple USB link between 2 >applications running on 2 computers like you can with >MsComm

I don't think you can use USB to directly link 2 computers you'd need a HUB but then Im new to USB (see above) and Ive also found a USB link cable

http://www.goldxproducts.com/usb/u320.htm

>Or are you asking how to write a USB port driver for a device?
I followed the link you gave nigelrivett and this could make programming easier. Yes I guess Im asking how would I write a port driver.

Thanks

 

[nigelrivett]

>> Yes I guess Im asking how would I write a port driver.
Think you would have to do that in assembler

You might look at this though

http://www.programmersheaven.com/zone1/cat251/14462.htm

======================================
Cursors are useful if you don't know sql.
DTS can be used in a similar way.
Beer is not cold and it isn't fizzy.