Re: LINEERR_RESOURCEUNAVAIL using USB port

From: Susan (susan_at_pile_HATE_SPAM_DOT_com)
Date: 10/01/04 

Date: Fri, 1 Oct 2004 07:42:39 -0400

Thank you all so much for your responses.

The bottom line is that I have to write a driver. Period. But I was under
direction to try whatever I could to get it working without having to write
a driver.

Jack...the COM1 statement with respect to TAPI was foolish. It's a long
story, but I realized that I was confusing myself and the issue.

Bruce...thank you. Again.

Michael... the upper interface does appear to be unimodem. I don't believe
I have Hyperterminal on the device. But our board vendor does provide
numerous programs to not only demonstrate capabilty, but also to help
'jump-start' your applications. I will have to try just one more thing here
this morning before I leap into the world of Platform Builder and device
drivers.

Gentlemen, have a wonderful weekend.

"Susan" <susan@pile_HATE_SPAM_DOT_com> wrote in message
news:%23wh1VYWpEHA.2340@TK2MSFTNGP11.phx.gbl...
> OK. I'll be the first to admit that what I am trying to do is foolish and
> desperate.
>
> I have a working CE.NET 4.1 application, using TAPI. As long as I connect
> my cell phone to a serial port, and point TAPI to COM1, all is fine.
>
> Well, our customers are finding it increasingly difficult to obtain cables
> with a serial port connector. Seems like all the new phones have USB
> connectors, because the majority of the people need to hook up to a PC or
> laptop. The manufacturers of these phones, also, do not necessarily know
> that Windows CE exists, therefore getting a driver is impossible.
>
> Now, to round out this story, we do not use Platform Builder to build the
> image for our device, but use an image (a CE.NET 4.1 image) provided by
our
> board vendor. Checking the registry on the device (checking the registry
in
> this image) I find that the USB port is COM4, and that there are drivers
> established for it (sa_usb_ser.dll and unimodem.dll). This is a StrongArm
> device.
>
> Well, fool that I am, I decided to oversimplify this problem, and just
plug
> the phone into the USB port, change the port to COM4, change the modem
> initialization string, change the 'selectedDevice' to "Hayes Compatible on
> COM4:" and go for it.
>
> Of course it does not work. I get LINEERR_RESOURCEUNAVAIL when I attempt
> ::lineMakeCall. (Now, I don't mean to beat a dead horse here, but this
code
> works when I use a phone with a serial port cable.)
>
> As a final, desperate attempt to get this working, since COM4 is set up to
> use unimodem.dll, I 'borrowed' the AT commands which the phone vendor
> describes in the INF files for Win2K and Win98, and bashed the
corresponding
> registry entries for unimodem.dll. Of course, it did not help. Also, I
> copied the Win2K driver to the device and used it's name as a response to
> the device's question: "Unidentifed USB Deivce. Enter the name of the
driver
> for this USB device." (This was done to humor the phone provider. It
also
> did not work. Surprise! It would not install. Surprise!)
>
> So, while I am waiting for the book "USB Complete" to arrive, I am more
than
> willing to try a few more things.
>
> Anyone?
>
> Thank you kindly. Susan
>
>

Relevant Pages

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