excerise 8 chapter 3

KDDonald

No where in the chapter does it discuss the DO WHILE statement.· Can you help me in figure how to install thes commands so that the board will work.

Chris Savage

Hello,

·· Please specify the book you are referring to.

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Chris Savage
Parallax Tech Support
csavage@parallax.com

Jon Williams

When all else fails, consult the help file where DO-WHILE is discussed. What you'll find is that you have enable PBASIC 2.5 syntax -- like this:

' {$PBASIC 2.5}

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Jon Williams
Applications Engineer, Parallax

KDDonald

I am using the What's a Microcontroller version 2.1.· I tried the Help on the program and it did not find anything under DO ... While statement.· It actually froze the program.· Is there any where else I can research this statement.

dandreae

You can access the "Help" file by clicking on "Start" in Windows and then click on "Programs" and then click on the "Parallax" folder and access the "Help" file from there.

Dave

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Dave Andreae

Tech Support
dandreae@parallax.com
Http://www.parallax.com

·

japer

ok had to look through the syntax book
do while/until
do
while "run loop if condition are true"
until "terminate loop if condition are true"
loop
are condition true or false ?

you can always clear the code by running an erase program to the stamp
if the stamp is locking up ?

Andy Lindsay (Parallax)

On page 91, there is an example of a DO...LOOP UNTIL code block.

DO
LOOP UNTIL condition

It keeps repeating –until- you have pressed the button (IN3 = 1).

The exercise is telling you to modify the loop so that it looks like this:

DO WHILE condition
LOOP

Instead of repeating the loop –until- a particular condition happens, the loop should keep repeating –while- a condition is true (while the button is not pressed). So, what's the value of IN3 when the button is pressed. What's the value of IN3 when the button is not pressed? What condition do you want to put in there?

It’s good that you’re looking things up in the PBASIC Syntax Guide. You’ll get better at understanding the syntax descriptions with practice. You can also download the BASIC Stamp Manual (or open it from your CD like in Chapter 1). In many cases, there will be more explanations and example programs there.