28129 Parallax Inc, 28129 Datasheet - Page 33

• Manufacturer Part Number: 28129
• Description: TEXT BASIC ANALOG & DIGITAL
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28129

• Style: Book
• Title: Basic Analog and Digital
• Contents: Basic Analog and Digital Text
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable

' Basic Analog and Digital - PL2_1R0.bs2
' Program Listing 2.1 Revision 0.
' {$STAMP BS2}
' {$PBASIC 2.5}
a
b
d
INPUT 0
INPUT 1
OUTPUT 4
OUTPUT 5
DEBUG CLS
DO
LOOP
The Output
Here's how the program should work. When no pushbuttons are pressed, the Debug
Terminal output should match Figure 2-4, and both LEDs should be off. Try pressing the
right button (in Figure 2-3). Did the right LED light up? Did the state of P0 in the Debug
Terminal change to 1? Is the decimal equivalent 1? If so, it looks like your circuit and
program are working well so far.
a = IN0
b = IN1
OUT4 = b
OUT5 = a
d = (2*b) + (1*a)
DEBUG HOME, "State of pin P0 is ", BIN a, CR
DEBUG "State of pin P1 is ", BIN B, CR, CR
DEBUG "2-bit binary number: ", CR
DEBUG "P1
DEBUG " ", BIN b, "
DEBUG "Decimal equivalent: ", DEC1 d, CR
VAR
VAR
VAR
P0", CR
Bit
Bit
Nib
", BIN a, CR, CR