Page 57 - Amphibionics : Build Your Own Biologically Inspired Robot

Amphibionics 03 3/24/03 8:11 AM Page 36
Amphibionics
The source file name should (but is not required to) end with the
extension .BAS. The text file that is created must be pure ASCII
text. It must not contain any special codes that might be inserted
by word processors for their own purposes. You are usually given
the option of saving the file as pure DOS or ASCII text by most
word processors.
Program 3.1 provides a good first test for programming a PIC and
for testing the frog robot controller board when it is built in Chapter
4. You can type it in or download it from the author’s Web site
www.thinkbotics.com, and follow the links for book software.

The file is named frog-test.bas and is listed in Program 3.1. The
BASIC source file should be created in or moved to the same direc-
tory where the PBP.EXE file is located.

PROGRAM 3.1 '------------------------------------------------------------------------------------------------------------------------------
' Name : Frog-test.bas
frog-test.bas program
listing ' Compiler : PicBasic Pro MicroEngineering Labs
' Notes : Program to test the main controller
' : board by flashing LEDs, producing
' : sounds and slowly rotating the servos
'------------------------------------------------------------------------------------------------------------------------------
' set porta to inputs
trisa = %11111111
' set portb pins 2 & 3 to inputs
trisb = %00001100
'------------------------------------------------------------------------------------------------------------------------------
' initialize variables
servo_pos_l VAR BYTE
servo_pos_r VAR BYTE
timer1 VAR BYTE
timer2 VAR BYTE
timer3 VAR BYTE
temp1 VAR BYTE
servo_r VAR PORTB.5
servo_l VAR PORTB.6

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