[Re: [basicstamps] Re: BASIC Stamp 2 Problem]
Archiver
Posts: 46,084
If it works fine without FIFO for you, I wouldn't worry about it. The FIFOs
should improve performance and perhaps reliability if they work correctly.
Basically they are buffers that accumulate data, up to 16 bytes receiving or
transmitting, so the interrupts to the processor can indicate that one or more
bytes are available to receive or send. I think sliding the receive bar down
means that the interrupt is sent sooner, rather than letting the buffer fill
up more. It was probably overflowing and data was lost in the transfers. I
haven't read all the notes about it here, I was just referred here from the
tabrobotkit group when I mentioned the problem there. I don't know what the
problem might be with Toshiba laptops; it could be the SuperIO that they use.
I even tried building an RS232 "conditioner" with a MAX232, since I wasn't
sure if the RS232 signals were in spec. Of course it turns out to be
something simpler. [noparse]:)[/noparse] But now I have the MAX232 circuit to modify for other
projects, too. [noparse]:)[/noparse]
"Jonathan Peakall" <jpeakall@m...> wrote:
> Fkerr,
>
> I'll try this. Does it really matter if the FIFO buffers are enabled? My
> laptop seems to run everything fine without, but then I only do micro
> programming with it.
>
> Jonathan
>
> www.madlabs.info
>
>
Original Message
> From: "fkerr2003" <fkerr@u...>
> To: <basicstamps@yahoogroups.com>
> Sent: Monday, March 10, 2003 5:12 AM
> Subject: [noparse][[/noparse]basicstamps] Re: BASIC Stamp 2 Problem
>
>
> > I had this problem with my Toshiba 320CDT Satellite. I didn't need
> > to disable the Fifo entirely, I just moved the slider bar for
> > receiving down a notch. That has seemed to help so far. Also, I
> > tried the DOS stamp editor, and it downloaded flawlessly. In
> > addition to that, the 15K executable is certainly lightweight!
> >
> > --- In basicstamps@yahoogroups.com, "Jonathan Peakall"
> > <jpeakall@m...> wrote:
> > > Allan,
> > >
> > > Glad it worked for you!
> > >
> > > Jonathan
> > >
> > > www.madlabs.info
> > >
> > >
Original Message
> > > From: <allan.lane@h...>
> > > To: <basicstamps@yahoogroups.com>
> > > Sent: Tuesday, February 18, 2003 11:23 AM
> > > Subject: [noparse][[/noparse]basicstamps] Re: BASIC Stamp 2 Problem
> > >
> > >
> > > > A thousand thanks, I assumed I had damaged my
> > > > serial port by connecting it to some suspect
> > > > equipment. I went in to control panel, System,
> > > > Hardware, Device Manager, Serial Ports, and
> > > > de-selected 'Use Fifo' on my laptop's port, and
> > > > it now says Echo Yes, Loopback Yes, and is
> > > > happy to talk to my BS2!
> > > >
> > > > Now, if only I had known that tip earlier.
> > > > This still saves me having to carry that extra
> > > > cable and USB device around all the time.
> > > >
> > > > --- In basicstamps@yahoogroups.com, "Jonathan Peakall"
> > > > <jpeakall@m...> wrote:
> > > > > Allan,
> > > > >
> > > > > Try disabling the FIFO buffers. This is what it took with my
> > > > Toshiba laptop.
> > > > >
> > > > > Jonathan
> > > > >
> > > > > www.madlabs.info
> > > > >
> > > > >
Original Message
> > > > > From: <allan.lane@h...>
> > > > > To: <basicstamps@yahoogroups.com>
> > > > > Sent: Thursday, February 13, 2003 9:13 AM
> > > > > Subject: [noparse][[/noparse]basicstamps] Re: BASIC Stamp 2 Problem
> > > > >
> > > > >
> > > > > > Why yes, I've had this identical problem.
> > > > > > My laptop's serial port (Toshiba Satellite 2535,
> > > > > > circa Jan 2000) refuses to recognize the BS2.
> > > > > > ... The rest deleted...
> > > >
> > > >
> > > >
> > > > 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.
> > > >
> > > >
> > > > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > > >
> > > >
> >
> >
> > 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.
> >
> >
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> >
> >
> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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Body of the message will be ignored.
>
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>
>
should improve performance and perhaps reliability if they work correctly.
Basically they are buffers that accumulate data, up to 16 bytes receiving or
transmitting, so the interrupts to the processor can indicate that one or more
bytes are available to receive or send. I think sliding the receive bar down
means that the interrupt is sent sooner, rather than letting the buffer fill
up more. It was probably overflowing and data was lost in the transfers. I
haven't read all the notes about it here, I was just referred here from the
tabrobotkit group when I mentioned the problem there. I don't know what the
problem might be with Toshiba laptops; it could be the SuperIO that they use.
I even tried building an RS232 "conditioner" with a MAX232, since I wasn't
sure if the RS232 signals were in spec. Of course it turns out to be
something simpler. [noparse]:)[/noparse] But now I have the MAX232 circuit to modify for other
projects, too. [noparse]:)[/noparse]
"Jonathan Peakall" <jpeakall@m...> wrote:
> Fkerr,
>
> I'll try this. Does it really matter if the FIFO buffers are enabled? My
> laptop seems to run everything fine without, but then I only do micro
> programming with it.
>
> Jonathan
>
> www.madlabs.info
>
>
Original Message
> From: "fkerr2003" <fkerr@u...>
> To: <basicstamps@yahoogroups.com>
> Sent: Monday, March 10, 2003 5:12 AM
> Subject: [noparse][[/noparse]basicstamps] Re: BASIC Stamp 2 Problem
>
>
> > I had this problem with my Toshiba 320CDT Satellite. I didn't need
> > to disable the Fifo entirely, I just moved the slider bar for
> > receiving down a notch. That has seemed to help so far. Also, I
> > tried the DOS stamp editor, and it downloaded flawlessly. In
> > addition to that, the 15K executable is certainly lightweight!
> >
> > --- In basicstamps@yahoogroups.com, "Jonathan Peakall"
> > <jpeakall@m...> wrote:
> > > Allan,
> > >
> > > Glad it worked for you!
> > >
> > > Jonathan
> > >
> > > www.madlabs.info
> > >
> > >
Original Message
> > > From: <allan.lane@h...>
> > > To: <basicstamps@yahoogroups.com>
> > > Sent: Tuesday, February 18, 2003 11:23 AM
> > > Subject: [noparse][[/noparse]basicstamps] Re: BASIC Stamp 2 Problem
> > >
> > >
> > > > A thousand thanks, I assumed I had damaged my
> > > > serial port by connecting it to some suspect
> > > > equipment. I went in to control panel, System,
> > > > Hardware, Device Manager, Serial Ports, and
> > > > de-selected 'Use Fifo' on my laptop's port, and
> > > > it now says Echo Yes, Loopback Yes, and is
> > > > happy to talk to my BS2!
> > > >
> > > > Now, if only I had known that tip earlier.
> > > > This still saves me having to carry that extra
> > > > cable and USB device around all the time.
> > > >
> > > > --- In basicstamps@yahoogroups.com, "Jonathan Peakall"
> > > > <jpeakall@m...> wrote:
> > > > > Allan,
> > > > >
> > > > > Try disabling the FIFO buffers. This is what it took with my
> > > > Toshiba laptop.
> > > > >
> > > > > Jonathan
> > > > >
> > > > > www.madlabs.info
> > > > >
> > > > >
Original Message
> > > > > From: <allan.lane@h...>
> > > > > To: <basicstamps@yahoogroups.com>
> > > > > Sent: Thursday, February 13, 2003 9:13 AM
> > > > > Subject: [noparse][[/noparse]basicstamps] Re: BASIC Stamp 2 Problem
> > > > >
> > > > >
> > > > > > Why yes, I've had this identical problem.
> > > > > > My laptop's serial port (Toshiba Satellite 2535,
> > > > > > circa Jan 2000) refuses to recognize the BS2.
> > > > > > ... The rest deleted...
> > > >
> > > >
> > > >
> > > > 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.
> > > >
> > > >
> > > > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > > >
> > > >
> >
> >
> > 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.
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
>
>
> 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.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>