Re: OpenG Serial Port API

[<alb...@ph...>]

Hi Martin

The most important reason that I do not use the old DOS parameter string 
is that I find it unreadable and you cannot extend it.
Readability is the one thing that keeps me laughing when looking at old 
programs.
I send you the files as soon as I find them in my "archive"


Albert Geven                                         Tel  +31 (0)40 27 
43019
Philips Research                                 Fax +31 (0)84 722 9844
prof Holstlaan 4        WAA01             Email  alb...@ph...
5656AA Eindhoven










Martin Henz <mar...@mh...>
Sent by: 
ope...@li...
11-02-2005 00:55
Please respond to opengtoolkit-developers
 
        To:     ope...@li...
        cc:     (bcc: Albert Geven/EHV/RESEARCH/PHILIPS)
        Subject:        Re: OpenG Serial Port API
        Classification: 




Hi Albert,

alb...@ph... wrote:

> Good start Martin

hmm  -  not  so good, because my e-mail should not go to the
mailing list ...

[...]

> Sometimes the instrument chokes on an inadvertently send hiccup on the
> line. 
> It would be nice to inform the operating system of new "default values" 
> before really initializing the port..

For the windows operating systems, these settings are in the
registry.  I  think,  that it is only possible to change the
major parameters (baud rate, parity, stop bit and data bits)
using  this  way.  It  may  be hard to examine that, because
different  windows  versions  are  sometimes using different
locations in the registry.

> I worked out a way to add these settings to a VISA resource name but did
> not yet inform the operating system.
> something like    ASRL1::INSTR ;baudrate=9600;parity=even

Is  there any reason, why you are not using the more default
notation like "9600,n,8,1"?

> In fact my application accepts the eventual hiccup after opening the 
port
> because I did not have the time to sort out how to inform the OS.

Yes,  it's  much easier to change the settings if the serial
port  is open. It may be also a starting point for the OpenG
serial port API.

> If you are interested I can send you the VI's but 
> So even when using VISA for serial we need such a special serial open.

Yes, thank you - please send it to my e-mail address.

-- 
Martin Henz



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