waveforms detections

bluejay · 2020-03-20 18:26

Does anybody know how to display waveforms on the screen terminal such as square waves from a 555 timer instead of one's and zeros?

The simple program displays digits of one's and zeros. Thanks in advance.

' {$STAMP BS2}
' {$PBASIC 2.5}
'input ex1
'Syntax: COUNT Pin, Duration, Variable
'Syntax: PULSIN Pin, State, Variable

box PIN 4
result VAR Nib

DO
    COUNT CR, box,result
    'DEBUG ? box
     DEBUG BIN box
     'PAUSE 100
     'PULSIN box,1,result
     'DEBUG HOME,"input=  ",DEC box
      LOOP

tomcrawford · 2020-03-20 21:35

With PBasic DEBUG, you are limited to a text-based display. In other words, only letters, numbers, and special characters. "|" and "_" turn out to be straight lines; p'raps you can string them together.

__
         __|   |__

Tracy Allen · 2020-03-23 17:32

You have,
COUNT CR, box,result
but the proper syntax is
COUNT pin, duration, variable
If box is your pin number, and you want to count for 1 second, then it would be
COUNT box, 1000, result.

If the rate of change is relatively slow, the display of a multi-level result can be made to scroll down the screen.

DO
  result = result+1 // 10     ' result cycles from 0 to 9 and back to zero, 
                                           ' or result could be from your COUNT or an ADC
  DEBUG CR, REP "*"\result   ' prints a line of that many stars
  PAUSE 32                           ' slow it down a bit
LOOP

*
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******
*******
********
*********
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****
******
*******
********
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**********
***********
*
**
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****
...

waveforms detections

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