hyperterminal setting output pin high without using Basic stamp editor

vijaykumar · 2009-08-31 19:33

I want to use Hyperterminal using the basic stamp homework board in a stand alone mode.
I want to control the board through the hyperterminal.
For example:
I want to set output pin 14 high using the hyperterminal
Can I type in hyperterminal· HIGH 14 and set the output pin?
I tried it and does not work.
Do I need the basic stamp to be running a program?
I searched through forums and could not find the information.
Any reference or information will be useful.

·

sylvie369 · 2009-08-31 21:25

Hyperterminal will not work as a Basic interpreter. It simply communicates with whatever is attached to the port it's connected to.

You could write a program and load it to the Stamp to interpret input from Hyperterminal. I'll bet there's a FAR easier way to do whatever you're trying to do, though. What's the project?

dev/null · 2009-08-31 21:41

myvar VAR Byte 

DEBUGIN DEC1 myvar

SELECT myvar
  CASE 1 : HIGH 14
  CASE 2 . HIGH 13
  ' etc....
ENDSELECT

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Mike Green · 2009-08-31 21:49

The only way to program the Stamp built into the Homework Board is to use the Stamp Editor. Once a program is downloaded to the Stamp, it can function completely independently of the Stamp Editor. You could write a program that looks at the serial port used for programming and interprets what's typed there from something like Hyperterminal, then performs some action on the Stamp. For example, you could have a program that waits for an "H" or "L" to be typed, followed by a decimal number, then sets that I/O pin to high or low like:

' {$STAMP BS2}
' {$PBASIC 2.5}
cmd    var  byte
thePin var  nibble
main:
  debugin cmd  ' Input a byte from the programming port
  if cmd = "H" then  ' Is it "H"?
    debugin dec thePin  ' If so, read a decimal value delimited by a non-digit
    high thePin  ' Set that pin high
  elseif cmd = "L" then  ' Same thing for "L" and setting the pin low
    debugin dec thePin
    low thePin
  endif
  goto main

Note that this code does no error checking. That can be added.

vijaykumar · 2009-08-31 22:10

Mike,
Your idea worked.
Only change I had to make was to make thePin Var nib instead of nibble.
Thanks.

Sylvie,
I am trying to write a higher level program with Visual Basic to work with the homework board.
I am trying to understand how BS2 works so that I can write a program in Visual Basic.
I wanted to know whether a program needs to be running in the board or the BS2 was intelligent enough to work directly with a hyperterminal.
From Mike's answer and yours I understand that one has to run a program in the board to be listening to the serial port for the hyperterminal to work.
I also saw in the web site information on tokenizers which I think can be used with Visual Basic.
I will read some more on this.
Thanks.
Vijay

dev/null · 2009-08-31 22:39

In VB.net you just add a SerialPort control to your form, and use the Write() function, and DataReceived() event if you want to receive data from the Stamp.

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Don't worry. Be happy

hyperterminal setting output pin high without using Basic stamp editor

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