Running two programs at the same time
Hi I am looking to run two programs at the same time with a BS2. I can
do it with a quick tune and wheels but I know there has to be a command
that I can use to make two programs run at the same time. Can anyone
help?
Thanks Mark
do it with a quick tune and wheels but I know there has to be a command
that I can use to make two programs run at the same time. Can anyone
help?
Thanks Mark
Comments
TIME, you will need two BASIC Stamps. You can use any of the multi-slot
BASIC Stamp modules (BS2e, BS2sx, BS2p, BS2pe) to hold multiple programs
(up to eight) and jump between them, but only one is ever running at a
given time.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: MARK DEVINE [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=LnEoD8Y4i7CEvburfUj9lwVJ4d1-7I7CLLoWJn1YmHK84slpfljP52qn59JO6lR-uSnEZ5ttJBdmLQn_yg]mdevine@s...[/url
Sent: Thursday, April 22, 2004 10:05 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Running two programs at the same time
Hi I am looking to run two programs at the same time with a BS2. I can
do it with a quick tune and wheels but I know there has to be a command
that I can use to make two programs run at the same time. Can anyone
help? Thanks Mark
Maybe I can reword it to "more than one subroutine running at the same time"? I
realize the stamp can run one (program) but I would like to have multiple
outputs coming from one board at the same time. Is there a command that can be
used to run two or three or more subroutines at one time? Or is this a case of
not having enough voltage to drive multipule ouputs. I totally understand your
not being flip I am just trying to get the most out of the board that I can.
BS2 BOE.
Thanks Mark
Original Message
From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=qmG9YM-Y0iburBYYp9kC_w5zkeVIeuOV-QWUCLHktC2_NvAAXPCDYhwQeOVTgjgHnwVx6ZIbds1i71AvDA]jwilliams@p...[/url
Sent: Fri 4/23/2004 10:41 PM
To: basicstamps@yahoogroups.com
Cc:
Subject: RE: [noparse][[/noparse]basicstamps] Running two programs at the same time
I'm not being flip: if you want to run TWO separate programs AT THE SAME
TIME, you will need two BASIC Stamps. You can use any of the multi-slot
BASIC Stamp modules (BS2e, BS2sx, BS2p, BS2pe) to hold multiple programs
(up to eight) and jump between them, but only one is ever running at a
given time.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: MARK DEVINE [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Yr_Z0iTQ047ukRiOov1x4IBwqEbMRGTMud9bFWv8K9GnohrZmdfEWG03tYBpFMdB4RHeZtv40CmjUg]mdevine@s...[/url
Sent: Thursday, April 22, 2004 10:05 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Running two programs at the same time
Hi I am looking to run two programs at the same time with a BS2. I can
do it with a quick tune and wheels but I know there has to be a command
that I can use to make two programs run at the same time. Can anyone
help? Thanks Mark
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[noparse][[/noparse]Non-text portions of this message have been removed]
Thus, you can only run one 'thread' of execution
at a time. However, you CAN change a set of
output pins at one time --
MyPins VAR OUTL ' OutL is P7..P0
DIRL = $FF ' I THINK this is output
MyPins = $F0
MyPins = $0F
(This changes P7..P4 to 1's (high), then
changes them to 0's (low)).
If you want to use PULSOUT, or SEROUT, then
you can only send on one pin, or send data
on one pin at a time.
--- In basicstamps@yahoogroups.com, "MARK DEVINE" <mdevine@s...>
wrote:
> Thanks John,
> Maybe I can reword it to "more than one subroutine running at the
same time"? I realize the stamp can run one (program) but I would
like to have multiple outputs coming from one board at the same
time. Is there a command that can be used to run two or three or
more subroutines at one time? Or is this a case of not having enough
voltage to drive multipule ouputs. I totally understand your not
being flip I am just trying to get the most out of the board that I
can. BS2 BOE.
> Thanks Mark
>
>
>
Original Message
> From: Jon Williams [noparse][[/noparse]mailto:jwilliams@p...]
> Sent: Fri 4/23/2004 10:41 PM
> To: basicstamps@yahoogroups.com
> Cc:
> Subject: RE: [noparse][[/noparse]basicstamps] Running two programs at the same
time
>
>
>
> I'm not being flip: if you want to run TWO separate programs
AT THE SAME
> TIME, you will need two BASIC Stamps. You can use any of the
multi-slot
> BASIC Stamp modules (BS2e, BS2sx, BS2p, BS2pe) to hold
multiple programs
> (up to eight) and jump between them, but only one is ever
running at a
> given time.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: MARK DEVINE [noparse][[/noparse]mailto:mdevine@s...]
> Sent: Thursday, April 22, 2004 10:05 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Running two programs at the same time
>
>
>
> Hi I am looking to run two programs at the same time with a
BS2. I can
> do it with a quick tune and wheels but I know there has to be
a command
> that I can use to make two programs run at the same time.
Can anyone
> help? Thanks Mark
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
Subject and Body of the message will be ignored.
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
only on thing at a time (so running two subroutines is the same as
running two programs -- you can't do it). Now, one of those things you
can do it turn multiple outputs on or off. For example, if I want to
make P0-P7 outputs, I do this:
DIRL = %11111111
No I can control the IO bits in parallel. If I want to make P0 and P3
high, while others remain low, I can do this:
OUTL = %00001001
Perhaps the way you're posing your question is where we're getting
sideways. What, specifically, do you want to do? BTW, have you read
through the literature we make available for download? ... there's lots
of good stuff that will give you a good idea of what you can do, and
probably show you things that you didn't think were possible. Be sure
to checkout our Nuts & Volts reprints as well -- over 100.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: MARK DEVINE [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=otFpGL90l6Cy8krGEaBl0I367m_91g7ff0tp9SRQQtDzWwfjO8LHivDKT5FyAwuLgTYvbEjrmgqxjTnd]mdevine@s...[/url
Sent: Friday, April 23, 2004 5:34 PM
To: basicstamps@yahoogroups.com; basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] Running two programs at the same time
Thanks John,
Maybe I can reword it to "more than one subroutine running at the same
time"? I realize the stamp can run one (program) but I would like to
have multiple outputs coming from one board at the same time. Is there
a command that can be used to run two or three or more subroutines at
one time? Or is this a case of not having enough voltage to drive
multipule ouputs. I totally understand your not being flip I am just
trying to get the most out of the board that I can. BS2 BOE.
Thanks Mark
> I realize the stamp can run one (program) but I would like to have multiple
> outputs coming from one board at the same time. Is there a command that can
> be used to run two or three or more subroutines at one time? Or is this a
> case of not having enough voltage to drive multiple outputs. I totally
> understand your not being flip I am just trying to get the most out of the
> board that I can. BS2 BOE.
I don't think that changing your wording will change the answer. The BS2
doesn't support multi-threading. Period. If you really want to do that then
you should checkout the Javelin Stamp. I'm just getting into it so I haven't
investigated all the details but the doc and a few of the source programs
appear to support the rumor that will does support multi-threading.
--
Enjoy,
George Warner,
Schizophrenic Optimization Scientists
Apple Developer Technical Support (DTS)
is called interupts.
Since the Stamp does not have interupts, it would be difficult, but not
impossible to do multiple tasks at once.
To do multiple tasks at once, it would require these tasks are interleaved
within the code.....something very difficult to program effectively IMO.
Ken
__________________________--
> I realize the stamp can run one (program) but I would like to have multiple
> outputs coming from one board at the same time. Is there a command that can
> be used to run two or three or more subroutines at one time? Or is this a
> case of not having enough voltage to drive multiple outputs. I totally
> understand your not being flip I am just trying to get the most out of the
> board that I can. BS2 BOE.
[noparse][[/noparse]Non-text portions of this message have been removed]
ON...GOSUB) is is quite possible to create very responsive code that
"appears" to be doing many things at once, and can dynamically change
under various conditions. Of course there are limits, nobody has every
accused the BASIC Stamp of running too fast....
Just to give you a rough idea of a structure that I frequently use in my
programs (psuedo-code):
Main:
DO
' do really important task here
ON task GOSUB Task1, Task2, Task3 ....
LOOP
Task1:
' do task code
IF (some_condition) THEN
task = task_that_now_has_to_run_next
ELSE
' just point to next task
task = task + 1 // MaxTask
ENDIF
RETURN
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: smartdim@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=OWTsfGsAPgPY5q0nTLIfMmp07dXNO_yq-e_XdJTqJu4jOSklYfp0H85JaGOJFhpHI9swqGTZgHmoig]smartdim@a...[/url
Sent: Saturday, April 24, 2004 12:34 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] RE: Running two programs at the same time
<snip>
To do multiple tasks at once, it would require these tasks are
interleaved
within the code.....something very difficult to program effectively IMO.
Ken
__________________________--