28125 Parallax Inc, 28125 Datasheet - Page 168

• Manufacturer Part Number: 28125
• Description: TEXT ROBOTICS
• Manufacturer: Parallax Inc

Specifications of 28125

• Title: Robotics with the Boe-Bot
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable

The first time through the loop,
retrieve a value of 64 from the first address at the
pulseCount
address specified by the
The third
Pulses_Right
three values in the “0” column of the code snippet on page 153. When the value of those
variables are placed in the code block that follows, this:
FOR counter = 1 TO pulseCount
NEXT
Do you recognize the basic maneuver generated by this code block?
' Robotics with the Boe-Bot - EepromNavigationWithWordValues.bs2
' Store lists of word values that dictate.
' {$STAMP BS2}
' {$PBASIC 2.5}
DEBUG "Program Running!"
' -----[ Variables ]----------------------------------------------------------
counter
pulseCount
addressOffset
instruction
pulseRight
PULSOUT 13, pulseLeft
PULSOUT 12, pulseRight
PAUSE 20
√
√
√
LOOP UNTIL (pulseCount = 0)
Look at the other columns of the code snippet on page 153 and anticipate what
the
through the loop.
Look at the
The
through the loop?
Enter, save, and run EepromNavigationWithWordValues.bs2.
READ
FOR…NEXT
<>
variable. The second
command retrieves a value of 650 from the first address specified by the
label and places it in the
operator stands for "not equal to". What will happen on the fifth time
VAR
VAR
VAR
VAR
VAR
LOOP UNTIL (pulseCount = 0)
code block will look like on the second, third, and fourth times
Pulses_Left
Word
Word
Byte
Byte
Word
addressOffset
READ
label, and places it in the
command retrieves a value of 850 from the first
pulseRight
becomes
Pulses_Count
' Stamp directive.
' PBASIC directive.
' Stores number of pulses.
' Stores offset from label.
' Stores EEPROM instruction.
' Stores servo pulse widths.
= 0. The first
variable. Notice that these are the
statement in the program below.
FOR counter = 1 TO 64
NEXT
PULSOUT 13, 850
PULSOUT 12, 650
PAUSE 20
label, and place it in the
pulseLeft
READ
command will
variable.