Yes the device will have the Class Code as Communication Device Class.
The device is an hand held device like PDA. As the device is still in
development stage, I haven't tested. The sample source code
"AppleUSBCDCDriver" given in the website is the Communication Device
Class driver for the serial device like modem that has Communication
Interface Class Subclass Code as Abstract Control Model. Since my device
is not a modem, I don't know what Subclass I have to choose for the
Communication Interface Class of my device. The requirement is I have to
write a "TTY over USB driver" for a device of class Communication Device
Class.
-----Original Message-----
From: Chris Hanson [mailto:email@hidden]
Sent: Thursday, October 09, 2003 11:39 PM
To: Gunasekaran Dharman
Cc: email@hidden
Subject: Re: USB Port as Virtual COM Port
On Thursday, October 9, 2003, at 03:57 AM, Gunasekaran Dharman wrote:
> Sorry, may be I used wrong words. But what I wanted to say is
> accessing the USB device as a serial device using Virtual COM Port
> driver.
There is no such thing as a "COM port" on a Macintosh, much less a
"Virtual COM Port driver." You're thinking of PCs running Windows,
which aren't the same thing at all. We use different terminology in
the Macintosh world.
Does the device you want to communicate with implement the
communications device class? That is, does it appear to the operating
system as a serial device already? Or does it not implement the
communication device class, and you're trying to figure out how to
communicate with it in that case?
-- Chris
--
Chris Hanson, bDistributed.com, Inc. | Email: email@hidden
Custom Mac OS X Development | Phone: +1-847-372-3955
http://bdistributed.com/ | Fax: +1-847-589-3738
http://bdistributed.com/Articles/ | Personal Email: email@hidden
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