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Windows 2000 USB CDC driver
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Olivier Debicki
Oct 23, 2002, 3:57:30 PM10/23/02
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My USB device answers ACM CDC requests.I want to send/receivedata to my
device like I would do using a standart COM port. I have built a modem INF
file for Windows 2000 has specified in microsoft modem INF documentation
(using usbser.inf as lower filter).
device like I would do using a standart COM port. I have built a modem INF
file for Windows 2000 has specified in microsoft modem INF documentation
(using usbser.inf as lower filter).
I see my device in hyperterminal as a new COM port but I have serious
limitations:
.Max bandwith on BULK IN is 200Kbps (it just accepts one filled bulk in
packet per frame)
.there is no buffering when sending a text file: one BULK OUTpacket per
character
.I do not succeed in opening /device/USBSER000 from another application
. is there a way to fix the number of this com port (it is > 5 thus )
modifying the INF?
I suspect an incomplete INF file.
Many thanks for any idea
Olivier
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