Windows supports an eventing model that eliminates the need to busy-
wait the CPU. You specify a duration and the code to be invoked on
callback, and then terminate the thread. When the interval expires,
the specified code is invoked.
I do this with TimerMM.DLL, but you may want to use the Windows
Multimedia Library directly depending on the language in which
MultiPSK is written.
73,
Dave, AA6YQ
--- In digitalradio@yahoogroups.com, "Patrick Lindecker" <[EMAIL PROTECTED]>
wrote:
>
> Hello Dave,
>
> If I transmit via the Windows buffering in a tone to the sound
card, no
> problem. If I transmit through the serial port, I need to control
the time
> ellapsed (for a dot or a dash). As under Windows there are no
interruptions
> (sniff), there is no way to know at which moment is the end of the
dot (or
> the dash). So I keep the CPU working in a loop, testing the
Windows timer,
> until the end of the dot. It is not a very elegant method but I
don't know
> an other way to do it.
> Note: the Delphi system timer is not sufficiently rapid (maximum
between 20
> to 60 /sec).
>
> 73
> Patrick
>
>
>
>
>
> ----- Original Message -----
> From: "Dave" <[EMAIL PROTECTED]>
> To: <digitalradio@yahoogroups.com>
> Sent: Thursday, March 09, 2006 3:53 AM
> Subject: RE: [digitalradio] MULTIPSK CW
>
>
> >A 50% cpu load seems really high, Patrick. WinWarbler consumes
less than 1%
> > of a 1.5 ghz Pentium 4 when generating CW via software. It uses
ticks from
> > TimerMM.dll to drive a state machine. What sort of timer are you
using?
> >
> > 73,
> >
> > Dave, AA6YQ
> >
> > -----Original Message-----
> > From: digitalradio@yahoogroups.com
[mailto:[EMAIL PROTECTED]
> > On
> > Behalf Of Patrick Lindecker
> > Sent: Wednesday, March 08, 2006 18:27 PM
> > To: digitalradio@yahoogroups.com
> > Subject: Re: [digitalradio] MULTIPSK CW
> >
> >
> > Hello Bill and Paul,
> >
> > Multipsk can directly key the transceiver (I use it this way).
However, it
> > is not advised under Windows XP because it takes about 50 % of
the
> > computing
> >
> > power (due to the obligation to manage a pseudo "timer").
> >
> > The most simple to do CW is to do it as PSK31 (in USB).
> >
> > 73
> > Patrick
> >
> >
> >
> > ----- Original Message -----
> > From: "Box SisteenHundred" <[EMAIL PROTECTED]>
> > To: <digitalradio@yahoogroups.com>
> > Sent: Wednesday, March 08, 2006 11:36 PM
> > Subject: RE: [digitalradio] MULTIPSK CW
> >
> >
> >> That IS cw Paul.
> >>
> >> In reality, that's how your rig probably generates CW....
> >>
> >> By injecting an audio tone into a SSB transmitter.
> >>
> >> When you say won't do "regular" cw... do you mean
> >> keying a circuit open and closed so you can connect it
> >> to the key jack of your rig?
> >>
> >> 73
> >>
> >> Bill KA8VIT
> >> [EMAIL PROTECTED]
> >> http://ka8vit.com
> >>
> >>
> >>>From: "Paul" <[EMAIL PROTECTED]>
> >>>Reply-To: digitalradio@yahoogroups.com
> >>>To: digitalradio@yahoogroups.com
> >>>Subject: [digitalradio] MULTIPSK CW
> >>>Date: Wed, 08 Mar 2006 18:56:36 -0000
> >>>
> >>> MULTI PSK ONLY XMTS CW ON USB OR LSB DOES NOT DO REGULAR
CW,AT LEAST
> >>> I CANT GET IT TO WORK ?? BUT IS A EXCELLENT DIGITAL PROGRAM
> >>> K8PG-Paul
> >>
> >>
> >>
> >>
> >> Need a Digital mode QSO? Connect to
Telnet://cluster.dynalias.org
> >>
> >> Other areas of interest:
> >>
> >> The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
> >> DigiPol: http://groups.yahoo.com/group/Digipol (band plan
policy
> >> discussion)
> >>
> >>
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> > Need a Digital mode QSO? Connect to
Telnet://cluster.dynalias.org
> >
> > Other areas of interest:
> >
> > The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
> > DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy
> > discussion)
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Need a Digital mode QSO? Connect to
Telnet://cluster.dynalias.org
> >
> > Other areas of interest:
> >
> > The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
> > DigiPol: http://groups.yahoo.com/group/Digipol (band plan
policy
> > discussion)
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion)
Yahoo! Groups Links
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