serial port programming

serial port programming

[EtienneB]

I'd like to know if there is a way (library or anything else) to program the
serial port on a PC (is it OS dependant ?)

Thanks
Etienne Baudin

Re: serial port programming

[David C. Hoos, Sr.]

It is OS-dependent -- so, naturally, that leads to the question -- which OS/

"EtienneB" <etienne.baudin@wanadoo.fr> wrote in message
news:E_8R6.2486$Au7.4142207@nnrp5.proxad.net...
> I'd like to know if there is a way (library or anything else) to program
the
> serial port on a PC (is it OS dependant ?)
>
> Thanks
> Etienne Baudin
>
>

Re: serial port programming

[EtienneB]

> It is OS-dependent -- so, naturally, that leads to the question -- which
OS/
I thought it may exist portable libs...

=>    For win9x or NT

Thanks
Etienne Baudin

Re: serial port programming

[Ted Dennison]

In article <SfaR6.2518$Fw2.4216934@nnrp5.proxad.net>, EtienneB says...
>
>I thought it may exist portable libs...
>
>=>    For win9x or NT

None that I know of (not even for non-Ada languages).

For NT there are special serial port mode setting calls you can make, which may
or may not work on 9x. You should consult a good Win32 reference manual. If you
are using Gnat, there are bindings the Win32 system calls that come with the
compiler. I believe the same goes for Aonix.

Also, there's most likely a nice, high-level way to do it with the Claw
facility.

---
T.E.D.    homepage   - http://www.telepath.com/dennison/Ted/TED.html
          home email - mailto:dennison@telepath.com

Re: serial port programming

[Stephen Leake]

"EtienneB" <etienne.baudin@wanadoo.fr> writes:

> > It is OS-dependent -- so, naturally, that leads to the question -- which
> OS/
> I thought it may exist portable libs...
> 
> =>    For win9x or NT

http://users.erols.com/leakstan/Stephe/index.html

get the "com_ports" package.

-- 
-- Stephe

Re: serial port programming

[Randy Brukardt]

Ted Dennison wrote in message ...
>In article <SfaR6.2518$Fw2.4216934@nnrp5.proxad.net>, EtienneB says...
>>
>>I thought it may exist portable libs...
>>
>>=>    For win9x or NT
>
>None that I know of (not even for non-Ada languages).
>
>For NT there are special serial port mode setting calls you can make,
which may
>or may not work on 9x. You should consult a good Win32 reference
manual. If you
>are using Gnat, there are bindings the Win32 system calls that come
with the
>compiler. I believe the same goes for Aonix.


The serial port mode routines do work on 9x etc.

>Also, there's most likely a nice, high-level way to do it with the Claw
>facility.


Thanks for the plug, but in fact there isn't a facility in Claw for
this. When we started building Claw, we decided to avoid creating stuff
that already exists in Ada 95. I/O clearly is in that category, although
the serial port access clearly is a special case. It would be easy
enough to build such a thing (Janus/Ada has a package for that purpose,
based on the Windows 3.1 (16-bit) version of serial access; adapting
that code to use Streams wouldn't be too hard). But, of course, we only
promise to implement new features for customers.

            Randy Brukardt
            R.R. Software, Inc.

Stream IO, was Re: serial port programming

[tmoran]

>Thanks for the plug, but in fact there isn't a facility in Claw for
>this. When we started building Claw, we decided to avoid creating stuff
>...
>that code to use Streams wouldn't be too hard).
  Directly using Stream input may block, which is often undesirable.
Claw contains a Marshalling package that makes it easy to do 'read,
'write with automatic buffers, and do the IO with a full buffer.
That's available for sockets and for the clipboard, and could be used
for serial IO equally well.

Re: serial port programming

[DuckE]

A word of caution, this version appears to not handle overlapped I/O.  This
only comes into play if you plan on having separate tasks reading and
writing the same serial port.  If you need that capability I'm sure I can
dig up my driver that does handle overlapped I/O.

SteveD


"Stephen Leake" <stephen.a.leake.1@gsfc.nasa.gov> wrote in message
news:uitiitwje.fsf@gsfc.nasa.gov...
> "EtienneB" <etienne.baudin@wanadoo.fr> writes:
>
> > > It is OS-dependent -- so, naturally, that leads to the question --
which
> > OS/
> > I thought it may exist portable libs...
> >
> > =>    For win9x or NT
>
> http://users.erols.com/leakstan/Stephe/index.html
>
> get the "com_ports" package.
>
> --
> -- Stephe