serial comm styles ( was Re: parallax sales
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Posts: 46,084
My favorite is I2C. It's easy to bit-bang with the BS2/BS2e/BS2sx and comes
built-in with the BS2p/pe, and there are a lot of really neat parts available
(really loving the MCP23016 at the moment).
I don't care for 1-Wire at all. Seems like a neat idea, but actual use of more
than one device on the same line is a major pain in the derri
built-in with the BS2p/pe, and there are a lot of really neat parts available
(really loving the MCP23016 at the moment).
I don't care for 1-Wire at all. Seems like a neat idea, but actual use of more
than one device on the same line is a major pain in the derri
Comments
programming
> BASIC Stamps?
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
Ok,
3 wire, 2 wire, 1 wire, iButton, etc.....
Which is preferred and why ? I'm thinking BS2.
It seems 3 wire is more common on many chips, but takes more lines.
1 wire would be great because it uses a single pin....
Comments ?
Dave
companies license the protocol or whatever from Philips.
On the Stamp, with the I2C commands you can use the modifiers like
DEC and SPSTR. Everything with I2C is byte oriented.
You cannot use the modifiers with the SHIFTIN SHIFTOUT commands.
However, those commands can deal with unusual numbers of bits, like 3
bits here or 12 bits there or any number from 1 to 16.
There are a lot more 3-wire/SPI/microwire etc parts available than
there are I2C.
3-wire/SPI/microwire is a lot simpler protocol, because the third
wire is a simple yes/no chip select, whereas with I2C all the address
information has to be transmitted serially. But then you do need the
extra hardware pins, one chip select for each device on the
3-wire/SPI/microwire buss. With I2C, the two wires can handle a lot
of devices.
From an engineering standpoint, 3-wire protocols can be faster to
transfer data than I2C, due to the additional addressing and
handshaking in the I2C protocol. You hardly ever see I2C devices
that can be clocked above 1 megahertz, but some SPI devices are rated
to 10 or 20 megahertz or above. That doesn't make any difference to
the BASIC Stamp though, which clocks either one at 10s of kiloherz.
Both I2C and SPI/microwire are static logic, meaning that they can be
clocked at any speed. That allows the BS2/BS2sx/BS2e, which don't
have a built in I2C command to do it with bit-banging at about 100
hz. The BS2p and BS2pe with the built in commands are just a lot
faster, clocking I2C at 10s of khertz.
One-wire, on the other hand is very picky about its timing. Timing
has to happen within critical windows of 10 to 100 microseconds.
That is why it can't be bit banged on the older Stamps.
-- Tracy
>My favorite is I2C. It's easy to bit-bang with the BS2/BS2e/BS2sx
>and comes built-in with the BS2p/pe, and there are a lot of really
>neat parts available (really loving the MCP23016 at the moment).
>
>I don't care for 1-Wire at all. Seems like a neat idea, but actual
>use of more than one device on the same line is a major pain in the
>derri
Jon, can you elaborate on why the NSC version of the SPI devices work
differently then the ones from Microchip? Or even Excel, assuming they
are still in business. Currently I've got a surplus of the ones from
NSC, but nothing from Microchip.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
>
Original Message
> From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Fw1JSmQdmgnkaBJAqT5VmP4Cc3dItx7Bx4HZW8Aln6ig2vDZ6NaFjQoi7ZAiqsp3sBOkO5NHON-1dzGBor60Cg]jwilliams@p...[/url
> Sent: Saturday, April 03, 2004 9:05 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
> My favorite is I2C. It's easy to bit-bang with the BS2/BS2e/BS2sx
and comes built-
> in with the BS2p/pe, and there are a lot of really neat parts
available (really loving
> the MCP23016 at the moment).
>
> I don't care for 1-Wire at all. Seems like a neat idea, but actual
use of more than one
> device on the same line is a major pain in the derrière (especially
if you don't know
> the serial numbers in advance). The only reason I wrote about the
DS2760 in my
> Nuts & Volts column was that it was the heart of a neat project
(thermocouple
> interface) and it was just as single device on the line. I'm fairly
certain, however,
> that will be my last 1-Wire project with the BASIC Stamp.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=dVo1JDxkzRoHj662XmDHkwtoTlyloGiNMiT5COimYacBCugV3q5TOA20hrWCJBt-WEw5c8RnxTV45K2gRg]davemucha@j...[/url
> Sent: Saturday, April 03, 2004 7:17 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax sales
>
>
>
> > Okay, let's get back to fun stuff. Who has a question about
> programming
> > BASIC Stamps?
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
>
> Ok,
>
> 3 wire, 2 wire, 1 wire, iButton, etc.....
>
> Which is preferred and why ? I'm thinking BS2.
>
> It seems 3 wire is more common on many chips, but takes more lines.
>
> 1 wire would be great because it uses a single pin....
>
> Comments ?
>
> Dave
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Gregg C Levine [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=DVJLpXTG0SK3Q9BBa62AzhJxEWNYWt4fNXDVZJJdfB8HPr4Kn7wJB4jp2dS5YjYbnUw4RJRAFz70k7YtulA_T6-2Sxfkgg]hansolofalcon@w...[/url
Sent: Saturday, April 03, 2004 11:18 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax sales
Hello from Gregg C Levine
Jon, can you elaborate on why the NSC version of the SPI devices work
differently then the ones from Microchip? Or even Excel, assuming they are still
in business. Currently I've got a surplus of the ones from NSC, but nothing from
Microchip.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
>
Original Message
> From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=9WlTM66b8ilIz5Eq9ZbMRyQfYeY8YI7aKliyJ7NcgpueCtTOiyyqgIpukxNRQ10di1aEy95guV55KG9VwGXXrQ]jwilliams@p...[/url
> Sent: Saturday, April 03, 2004 9:05 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
> My favorite is I2C. It's easy to bit-bang with the BS2/BS2e/BS2sx
and comes built-
> in with the BS2p/pe, and there are a lot of really neat parts
available (really loving
> the MCP23016 at the moment).
>
> I don't care for 1-Wire at all. Seems like a neat idea, but actual
use of more than one
> device on the same line is a major pain in the derrière (especially
if you don't know
> the serial numbers in advance). The only reason I wrote about the
DS2760 in my
> Nuts & Volts column was that it was the heart of a neat project
(thermocouple
> interface) and it was just as single device on the line. I'm fairly
certain, however,
> that will be my last 1-Wire project with the BASIC Stamp.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=FC3ybwMnjVDAC8SANIWmn6FNDnhxRDEjVkbaGyFBc8V1H7Zq4duTWmWKE-Vhldj77WKEEXjQqHY]davemucha@j...[/url
> Sent: Saturday, April 03, 2004 7:17 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax sales
>
>
>
> > Okay, let's get back to fun stuff. Who has a question about
> programming
> > BASIC Stamps?
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
>
> Ok,
>
> 3 wire, 2 wire, 1 wire, iButton, etc.....
>
> Which is preferred and why ? I'm thinking BS2.
>
> It seems 3 wire is more common on many chips, but takes more lines.
>
> 1 wire would be great because it uses a single pin....
>
> Comments ?
>
> Dave
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abuse@p....
You say, "> I don't know.", (comment from mail program included.) Do
those comments from that original program look familiar to you? To
anyone else? I think I have that number here, from NSC, I know I've
got the others in that series. Those chips always struck me as odd.
Now I know better, but I am still confused.
' Program: EEPROM.BAS
' This program demonstrates subroutines for storing data in a
' Microchip 93LC66 serial EEPROM. This program will not work
' with the National Semiconductor part with the same number.
' Its serial protocol is substantially different.
The thing is, since the program ends in .BAS, it could be for any of
the Stamps. Not just for the Stamp 1, but for the 2, and each of
those.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
>
Original Message
> From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=nw7at36P4CbhhaK_q8OD41J70_LiF7UsrSOoQK25q5pOVESqZ5LX5gX7l7j_rO1rrMVi8zdznRz09ObI]jwilliams@p...[/url
> Sent: Sunday, April 04, 2004 12:21 AM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
> I don't know.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Gregg C Levine [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7QDhBtnIv8tgwR5TN7L2_Jl76D8Za4hGGB8ozJzooWJmD8sJ7vz0mKRxr4oJsSENB6XIJlmDQm4Ar47L98-bBZ0Mcaxn]hansolofalcon@w...[/url
> Sent: Saturday, April 03, 2004 11:18 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
>
> Hello from Gregg C Levine
> Jon, can you elaborate on why the NSC version of the SPI devices
work differently
> then the ones from Microchip? Or even Excel, assuming they are still
in business.
> Currently I've got a surplus of the ones from NSC, but nothing from
Microchip.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
>
> >
Original Message
> > From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=nw7at36P4CbhhaK_q8OD41J70_LiF7UsrSOoQK25q5pOVESqZ5LX5gX7l7j_rO1rrMVi8zdznRz09ObI]jwilliams@p...[/url
> > Sent: Saturday, April 03, 2004 9:05 PM
> > To: basicstamps@yahoogroups.com
> > Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
> sales
> >
> > My favorite is I2C. It's easy to bit-bang with the BS2/BS2e/BS2sx
> and comes built-
> > in with the BS2p/pe, and there are a lot of really neat parts
> available (really loving
> > the MCP23016 at the moment).
> >
> > I don't care for 1-Wire at all. Seems like a neat idea, but
actual
> use of more than one
> > device on the same line is a major pain in the derrière
(especially
> if you don't know
> > the serial numbers in advance). The only reason I wrote about the
> DS2760 in my
> > Nuts & Volts column was that it was the heart of a neat project
> (thermocouple
> > interface) and it was just as single device on the line. I'm
fairly
> certain, however,
> > that will be my last 1-Wire project with the BASIC Stamp.
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=JXXYm0yeSnuEL0JhI-zMNdkl2XJS65A12gF11wanfGJci-TcY9qXDc0JCEbfktxvEHh8rIXKsaM7]davemucha@j...[/url
> > Sent: Saturday, April 03, 2004 7:17 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax sales
> >
> >
> >
> > > Okay, let's get back to fun stuff. Who has a question about
> > programming
> > > BASIC Stamps?
> > >
> > > -- Jon Williams
> > > -- Applications Engineer, Parallax
> > > -- Dallas Office
> >
> > Ok,
> >
> > 3 wire, 2 wire, 1 wire, iButton, etc.....
> >
> > Which is preferred and why ? I'm thinking BS2.
> >
> > It seems 3 wire is more common on many chips, but takes more
lines.
> >
> > 1 wire would be great because it uses a single pin....
> >
> > Comments ?
> >
> > Dave
>Hello (again) from Gregg C Levine
>You say, "> I don't know.", (comment from mail program included.) Do
>those comments from that original program look familiar to you? To
>anyone else? I think I have that number here, from NSC, I know I've
>got the others in that series. Those chips always struck me as odd.
>Now I know better, but I am still confused.
>
>' Program: EEPROM.BAS
>' This program demonstrates subroutines for storing data in a
>' Microchip 93LC66 serial EEPROM. This program will not work
>' with the National Semiconductor part with the same number.
>' Its serial protocol is substantially different.
>
>The thing is, since the program ends in .BAS, it could be for any of
>the Stamps. Not just for the Stamp 1, but for the 2, and each of
>those.
Gregg -
Looking at the program per se and not just the name will give one a much better
idea of which Basic Stamp that particular program is suited for. One simple cue
is the use of the keyword SYMBOL. I.E. SYMBOL SW0 = pin0 . If you look at the
Stamp PBASIC Manual in the Stamp I section, you will notice other unique
keywords as well.
As far as Microchip vs. National parts are concerned it may be as something as
simple as timing, and the author wanted to warn any future users of this
demonstration program that the supplier of the chip was important for that
reason.
Internal to the program, there would be no practical way (other than asking)
which manufacturers part was installed.
Regards,
Bruce Bates
faster, but I2C is so dang simple.
And 1-wire...I've never liked timing critical communication.
Mike
family) -- probably written by Scott Edwards way back when. The best thing to
do -- as I frequently suggest -- is download the data sheets for the parts in
question.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Gregg C Levine [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=EJdXy9zDNEfQACY6d6fZR5OB3rf_AdWPHc9tkQuYC1WYdizHs66LQtMti5HMTn1ciS7rQFd9x9DNNoQOPvhycSI7OQnNtA]hansolofalcon@w...[/url
Sent: Sunday, April 04, 2004 8:49 AM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax sales
Hello (again) from Gregg C Levine
You say, "> I don't know.", (comment from mail program included.) Do those
comments from that original program look familiar to you? To anyone else? I
think I have that number here, from NSC, I know I've got the others in that
series. Those chips always struck me as odd. Now I know better, but I am still
confused.
' Program: EEPROM.BAS
' This program demonstrates subroutines for storing data in a
' Microchip 93LC66 serial EEPROM. This program will not work
' with the National Semiconductor part with the same number.
' Its serial protocol is substantially different.
The thing is, since the program ends in .BAS, it could be for any of the Stamps.
Not just for the Stamp 1, but for the 2, and each of those.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
>
Original Message
> From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=5UVevxX6t2dZLJC60jq4yPkXYv9sLj9N6H3C1dhCOHyzsRoycRy-9TFIM9pTA18VT90v2JSMi6OUJt4hVc8]jwilliams@p...[/url
> Sent: Sunday, April 04, 2004 12:21 AM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
> I don't know.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Gregg C Levine [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=EJdXy9zDNEfQACY6d6fZR5OB3rf_AdWPHc9tkQuYC1WYdizHs66LQtMti5HMTn1ciS7rQFd9x9DNNoQOPvhycSI7OQnNtA]hansolofalcon@w...[/url
> Sent: Saturday, April 03, 2004 11:18 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
>
> Hello from Gregg C Levine
> Jon, can you elaborate on why the NSC version of the SPI devices
work differently
> then the ones from Microchip? Or even Excel, assuming they are still
in business.
> Currently I've got a surplus of the ones from NSC, but nothing from
Microchip.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
>
> >
Original Message
> > From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=5UVevxX6t2dZLJC60jq4yPkXYv9sLj9N6H3C1dhCOHyzsRoycRy-9TFIM9pTA18VT90v2JSMi6OUJt4hVc8]jwilliams@p...[/url
> > Sent: Saturday, April 03, 2004 9:05 PM
> > To: basicstamps@yahoogroups.com
> > Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
> sales
> >
> > My favorite is I2C. It's easy to bit-bang with the BS2/BS2e/BS2sx
> and comes built-
> > in with the BS2p/pe, and there are a lot of really neat parts
> available (really loving
> > the MCP23016 at the moment).
> >
> > I don't care for 1-Wire at all. Seems like a neat idea, but
actual
> use of more than one
> > device on the same line is a major pain in the derrière
(especially
> if you don't know
> > the serial numbers in advance). The only reason I wrote about the
> DS2760 in my
> > Nuts & Volts column was that it was the heart of a neat project
> (thermocouple
> > interface) and it was just as single device on the line. I'm
fairly
> certain, however,
> > that will be my last 1-Wire project with the BASIC Stamp.
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=vcTm_HnW-rKn09cv3rWXdcRs1XMEiSDY0lJI6eiK1mKXVrtBtoZ63Bo0EO17g3c92xOWdI5tfB0]davemucha@j...[/url
> > Sent: Saturday, April 03, 2004 7:17 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax sales
> >
> >
> >
> > > Okay, let's get back to fun stuff. Who has a question about
> > programming
> > > BASIC Stamps?
> > >
> > > -- Jon Williams
> > > -- Applications Engineer, Parallax
> > > -- Dallas Office
> >
> > Ok,
> >
> > 3 wire, 2 wire, 1 wire, iButton, etc.....
> >
> > Which is preferred and why ? I'm thinking BS2.
> >
> > It seems 3 wire is more common on many chips, but takes more
lines.
> >
> > 1 wire would be great because it uses a single pin....
> >
> > Comments ?
> >
> > Dave
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abuse@p....
I agree. In fact, when I first read the program, (This time.), I
recognized the coding style, as that of his, especially since it
didn't have someone's name in the comments, as most of us do, and yes,
Jon, it did not look like one of yours.
What I did do, is register on Microchip's site, for free samples, and
site purchases of parts, and then selected for sampling, that part
number, and the one on the Parallax site. When they get here, I'll see
for myself, if the original author is right, and we should stick to
only Microchip parts, when it comes to external memory, or it’s
personal preferences of the author at work.
Bruce suggested a comparison between code for a BS1, and the BS2.
Which I might do, but since it came with the original download of the
stuff for the BS1, that I bought originally, I'm also inclined to
believe that you're right also.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
>
Original Message
> From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=QMZOU6nK6bvpbk2S6XQiU-RnMMnYLVqm50Sue0OcWF7r6fO0eAxiQkunIevNJQjWc8-jgmw2v2R6bLqHbCtg1g]jwilliams@p...[/url
> Sent: Sunday, April 04, 2004 12:35 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
> It looks like an older Parallax demo for the BS1 (.BS2 is used for
the BS2 family) --
> probably written by Scott Edwards way back when. The best thing to
do -- as I
> frequently suggest -- is download the data sheets for the parts in
question.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Gregg C Levine [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=9FfXp_31sAulJLRtFNVeyDOQNkVLIE1ntaZ4qoHCGbkwuFywBkP0eff7nK8fmCDtX9HtGEypRxgE4PhKzPZl6GQCv0sc2mQR]hansolofalcon@w...[/url
> Sent: Sunday, April 04, 2004 8:49 AM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
>
>
> Hello (again) from Gregg C Levine
> You say, "> I don't know.", (comment from mail program included.) Do
those
> comments from that original program look familiar to you? To anyone
else? I think I
> have that number here, from NSC, I know I've got the others in that
series. Those
> chips always struck me as odd. Now I know better, but I am still
confused.
>
> ' Program: EEPROM.BAS
> ' This program demonstrates subroutines for storing data in a
> ' Microchip 93LC66 serial EEPROM. This program will not work
> ' with the National Semiconductor part with the same number.
> ' Its serial protocol is substantially different.
>
> The thing is, since the program ends in .BAS, it could be for any of
the Stamps. Not
> just for the Stamp 1, but for the 2, and each of those.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
>
> >
Original Message
> > From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=QMZOU6nK6bvpbk2S6XQiU-RnMMnYLVqm50Sue0OcWF7r6fO0eAxiQkunIevNJQjWc8-jgmw2v2R6bLqHbCtg1g]jwilliams@p...[/url
> > Sent: Sunday, April 04, 2004 12:21 AM
> > To: basicstamps@yahoogroups.com
> > Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
> sales
> >
> > I don't know.
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: Gregg C Levine [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=9FfXp_31sAulJLRtFNVeyDOQNkVLIE1ntaZ4qoHCGbkwuFywBkP0eff7nK8fmCDtX9HtGEypRxgE4PhKzPZl6GQCv0sc2mQR]hansolofalcon@w...[/url
> > Sent: Saturday, April 03, 2004 11:18 PM
> > To: basicstamps@yahoogroups.com
> > Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
> sales
> >
> >
> > Hello from Gregg C Levine
> > Jon, can you elaborate on why the NSC version of the SPI devices
> work differently
> > then the ones from Microchip? Or even Excel, assuming they are
still
> in business.
> > Currently I've got a surplus of the ones from NSC, but nothing
from
> Microchip.
> >
> > Gregg C Levine hansolofalcon@w...
> >
> > "The Force will be with you...Always." Obi-Wan Kenobi
> > "Use the Force, Luke."· Obi-Wan Kenobi
> >
> > >
Original Message
> > > From: Jon Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=QMZOU6nK6bvpbk2S6XQiU-RnMMnYLVqm50Sue0OcWF7r6fO0eAxiQkunIevNJQjWc8-jgmw2v2R6bLqHbCtg1g]jwilliams@p...[/url
> > > Sent: Saturday, April 03, 2004 9:05 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: RE: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
> > sales
> > >
> > > My favorite is I2C. It's easy to bit-bang with the
BS2/BS2e/BS2sx
> > and comes built-
> > > in with the BS2p/pe, and there are a lot of really neat parts
> > available (really loving
> > > the MCP23016 at the moment).
> > >
> > > I don't care for 1-Wire at all. Seems like a neat idea, but
> actual
> > use of more than one
> > > device on the same line is a major pain in the derrière
> (especially
> > if you don't know
> > > the serial numbers in advance). The only reason I wrote about
the
> > DS2760 in my
> > > Nuts & Volts column was that it was the heart of a neat project
> > (thermocouple
> > > interface) and it was just as single device on the line. I'm
> fairly
> > certain, however,
> > > that will be my last 1-Wire project with the BASIC Stamp.
> > >
> > > -- Jon Williams
> > > -- Applications Engineer, Parallax
> > > -- Dallas Office
> > >
> > >
> > >
Original Message
> > > From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=crkh_dhHYB-Zfj22KT7SnwH8WmdUx909MeenByXaGYCmw1rWSX6-K6iWnlF_HpthQCPuCTBCrxX6LQa5]davemucha@j...[/url
> > > Sent: Saturday, April 03, 2004 7:17 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: [noparse][[/noparse]basicstamps] serial comm styles ( was Re: parallax
sales
> > >
> > >
> > >
> > > > Okay, let's get back to fun stuff. Who has a question about
> > > programming
> > > > BASIC Stamps?
> > > >
> > > > -- Jon Williams
> > > > -- Applications Engineer, Parallax
> > > > -- Dallas Office
> > >
> > > Ok,
> > >
> > > 3 wire, 2 wire, 1 wire, iButton, etc.....
> > >
> > > Which is preferred and why ? I'm thinking BS2.
> > >
> > > It seems 3 wire is more common on many chips, but takes more
> lines.
> > >
> > > 1 wire would be great because it uses a single pin....
> > >
> > > Comments ?
> > >
> > > Dave