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Re: serial.dll for serial port under IDL [message #62998 is a reply to message #62997]

Mon, 20 October 2008 08:21

Wout De Nolf
Messages: 194
Registered: October 2008

Senior Member

Is this what you're talking about?
http://imac-252a.stanford.edu/programs/IDL/idl_serial/

How do you know there's no reaction from the device on COMM_WRITE?
What errormessage is COMM_READ giving? Did you try calling it from a C
(or C++) program?

If you have a compiler, start debugging serial.c by attaching to a
running idl process (IDL7.0: C:\Program
Files\ITT\IDL70\bin\bin.x86\idl_opserver.exe, IDL6.x: if I remember
correctly this was idlde.exe...) and then issue the COMM_READ in IDL
and set a breakpoint in the c-code.

On Sat, 18 Oct 2008 09:50:10 -0700 (PDT), thejll@mail.dk wrote:

> I am unable to get the serial.dll and its dlm to work. Can anybody
> show me a piece of IDL code that uses the serial.dll and dlm to read
> from or write to the serial port?
>
> I'd like to be able to do things like read from a GPS or a telescope
> (whic accepts strings printed to the serial port).
>
> As seen on this group in about 2004 the dll and the dlm has been
> discussed - but no use was shown. I too can use the COMM_OPEN and
> COMM_CLOSE calls. I can get the COMM_WRITE to report the number of
> characters written but there seems to be no reaction from the device
> written to and COMM_READ never reports anything but failure.
>
> It may be significant to say that I use IDL 6.3 on a laptop and use a
> serial-USB dongle. Yes, the dongle works - e.g with a GPS and
> dedicated GPS software.
>
> Can anyone suggest something that works?
>
> Peter Thejll
> Denmark

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[Message index]

		Re: serial.dll for serial port under IDL By: Rick Towler on Wed, 22 October 2008 09:10
		Re: serial.dll for serial port under IDL By: peter.thejll on Wed, 22 October 2008 06:07
		Re: serial.dll for serial port under IDL By: peter.thejll on Wed, 22 October 2008 06:05
		Re: serial.dll for serial port under IDL By: Rick Towler on Mon, 20 October 2008 11:19
		Re: serial.dll for serial port under IDL By: Wout De Nolf on Mon, 20 October 2008 08:21
		Re: serial.dll for serial port under IDL By: Rick Towler on Fri, 24 October 2008 09:10

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