28128 Parallax Inc, 28128 Datasheet - Page 20
28128
Manufacturer Part Number
28128
Description
KIT BASIC ANALOG/DIGI PARTS ONLY
Manufacturer
Parallax Inc
Datasheet
1.28129.pdf
(176 pages)
Specifications of 28128
Accessory Type
ADC, DAC
Product
Microcontroller Accessories
For Use With/related Products
BASIC Stamp® 2 and Board of Education
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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' Basic Analog and Digital - State_of_P7.bs2
' Check the state of P7 and show it on the Debug Terminal.
' {$STAMP BS2}
' {$PBASIC 2.5}
DEBUG CLS
INPUT 7
OUTPUT 12
DO
LOOP
About the Code
The first lines start with an apostrophe. This means that they’re comments and not
PBASIC commands. The first line reminds you of the book and file name, for future
reference.
The second comment is a description of the program. What does the program do?
The next two lines are special comments. We call them compiler directives and they are
intended to identify the BASIC Stamp and the PBASIC version we are using. For
example if you’re following this manual with a BASIC Stamp 2 SX, you might replace
the compiler directive “
It's good to start the Debug Terminal and clear it before using it to display data. This way
you will avoid inadvertently displaying outputs from previous programs that were in the
BASIC Stamp's memory. The Debug Terminal starts automatically the first time it
encounters the
Debug Terminal after it is opened:
The BASIC Stamp needs to be told how to treat the I/O pins connected to the circuit.
They can either be set to function as inputs or outputs. This PBASIC command sets
BASIC Stamp I/O pin P7 to function as an input pin:
OUT12 = IN7
DEBUG HOME, "The state of P7 is ", BIN IN7
' Basic Analog and Digital - State_of_P7.bs2
' Check the state of P7 and show it on the Debug Terminal.
' {$STAMP BS2}
' {$PBASIC 2.5}
DEBUG CLS
DEBUG
command in a PBASIC program. This
'{$STAMP BS2}
” with “
'{$STAMP BS2SX}
DEBUG
”
.
command clears the
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