Picaxe Versabot, Руководство пользователя

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5. Now, type the following into the text window:
symbol IN1 = pinB.1 ' Define Input P1
symbol P2 = B.2 ' Define Output P2
do ‘ Do the following ...
do while IN1 = 1 ' While the slide switch is a 1 ...
sound P2, (100,50,110,50) ' Play two high tones
pause 500 ' And delay between tones
loop ' Repeat this loop while the slide switch is 1
do while IN1 = 0 ' While the slide switch is a 0 ...
sound P2, (50,50,60,50) ' Play two low tones
pause 500 ' And delay between tones
loop ' Repeat this loop while the slide switch is 0
loop ' Repeat forever
Some things to note about the program above:
•
The do while command sets up a condition that while the switch is in a certain position (i.e the
1 position) a program sequence will follow. This will keep looping and will test the condition
each time before it proceeds. As soon as that condition changes (i.e. The switch is moved to
the 0 position) it will break out of the loop and continue through the code further down the
program.
•
Each do command has a corresponding loop command to show where the loop ends.
Indentation is used so each do command lines up with its corresponding loop .
• Each sound command is just a two note tune in this case; more notes can be added as
required.
6. Save your program as Buzzerprogram.bas .
7. Press the F5 key ( or use the PICAXE/Program menu option ) to download your program into the
PICAXE on your Versabot motherboard.
8. Once the downloading has completed you can switch the slide switch back and forth to play the
two different tunes.
9. Now we can modify the above program to include a LED and a buzzer and use the switch to
interchange between the two.