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'[SX] Pulsin'
2005\10\12@160512 by Buggn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Bugg wrote:

(Dumb questions, no experience.)
I'm posibly giong to work with the SX and Ping))), and the output of the Ping))) will be more than one byte. How do I store the value?

RoboGeek
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2005\10\12@165100 by James Newtonn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, James Newton wrote:

What is "the ping"
You store multi-byte values in multi-file register locations.

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2005\10\12@192759 by Jon Williamsn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Jon Williams wrote:

You can write a custom PULSIN to give you as much resolution for the Ping))) as you need.  If you want to use the native (8-bit) SX/B PUSLIN then you'll need to set the resolution accordingly.

James: The Ping))) is a low-cost ultrasonic range finder.  You trigger it with a short pulse and and it returns the distance to target as a pulse width.

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2005\10\13@144831 by Buggn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Bugg wrote:

[Quoting: "Jon Williams (Parallax)"]
You can write a custom PULSIN to give you as much resolution for the Ping))) as you need. If you want to use the native (8-bit) SX/B PUSLIN then you'll need to set the resolution accordingly.

Elaborate please?     Again, no experience.
RoboGeek


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2005\10\13@150247 by Coriolisn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Coriolis wrote:

Hes talking about compiling the command PULSIN in SX/B, adjusting the pause between resolution ticks and rolling over the counter into a 16 bit value. But unless you have the actual components and are seeking to do this, I doubt anyone would be willing to take the time out and help you code it since it is a theoretical discussion at this point, just know that it can be done.

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2005\10\13@160844 by Jon Williamsn/a
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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Jon Williams wrote:

RoboGeek:

I can give you lots of answers but as Paul points out, if you don't actually have SX/B and are not actively working with it then it won't be helpful.  At any rate, here goes: The max expected pulse back from the Ping is 18.5 ms (Tin-max in the docs) then you could set the resolution value to 10; this would cause the PULSIN function to return a value from 100 uS to 25.5 ms (in 100 uS units).

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2005\10\15@171614 by Buggn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Bugg wrote:

I should be getting SX/B soon, but don't have it. Thank you for your help!
RoboGeek
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2005\10\17@124008 by Coriolisn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Coriolis wrote:

You know you can get started on SX/B before you ever purchase it, by using SXsim and SX/B you can do quite a few "on the computer" experiements with a $0 investment.

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2005\10\17@133320 by Jon Williamsn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Jon Williams wrote:

Good point, Paul, I should have made it!  Hmm... I wonder if we can get our pal Guenther to add a pulse simulator to the hardware panel....

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2005\10\31@175321 by Buggn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Bugg wrote:

Didn't even think about that... Have to try it.
RoboGeek
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'[SX] Pulsin'
2005\11\01@043249 by g_daubachn/a
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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, g_daubach wrote:

Jon,
I have added the pulse simulator to the SXSim wish list.

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'[SX] Pulsin'
2006\05\20@082043 by curtisn/a
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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, curtis wrote:

Hello,
I have created a circuit with an IR detector module and an rs232 module using the sx tech board. I know each module works but I was not sure if my code is correct. Can someone advise me if this is correct? I cannot see anything on hyperterminal or a VB program that I created.


' -------------------------------------------------------------------------
DEVICE          SX28, OSCXT2, TURBO, STACKX, OPTIONX
FREQ            4_000_000
' -------------------------------------------------------------------------
' IO Pins
' -------------------------------------------------------------------------
IRin  VAR RA.0   ' IR input
IRout  VAR RA.1   ' IR output
' =========================================================================
' Vaiables
' =========================================================================
IRval        VAR     Byte   'pulsin variable
Temp1        VAR     Byte   'counter variable
' =========================================================================
 PROGRAM Start
' =========================================================================
Start:
 ' initialization code here
goto Main
Main:
for temp1 = 0 to 15
pulsin IRin,0,IRval
Serout IRout,T9600,IRval
next
end
GOTO Main

Thanks,
Curtis
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2006\05\24@201413 by PJMontyn/a

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, PJMonty wrote:

Curtis,
First verify that you can send data to the PC via RS-232 from the SX board.  To do this, write a program that does something simple like send the letter "A"  over and over.  Once you know that is working, then you can concentrate on the IR part.  Don't try and solve two problems simultaneously.

[list]Thanks,
PeterM[/list]
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