basic stamp programming

Nikolay

here is my question...

after you write your program and click run, the program is downloaded into the basic stamp, but it is not executed.

is it possible to get it to execute the program after download, without unplugging the serial cable and pressing reset? if so how.

Thank you for your time.

Mike Green

When you click the menu item for RUN, the program is downloaded and it is executed. I'm not aware of any way to just download it without executing it.

remmi870

if your just trying to keep your program from actualy doing anything, like setting outputs or accidently turning stuff on, you could just have the program start with a do/loop until input 0 = 1, so it wont actualy run your program without pin one high.

SRLM

An even simpler do nothing program is:

END

remmi870

no, i think the problem is, if i understand correctly, he wants to be able to download a program, (asuming it runs and stops, no loop), then restart the program without resetting or downloading again.

Amaral

Are you using an USB converter to an Serial BOE ?
Something is keeping your lines on RESET ..
Please post what kind of equipament are you using.


Amaral

Nikolay

I am using a homework board with a serial cable. And like remmi870 said i want to start the program after the download is finished. right now i can only achieve that if i put a DEBUG "" command at the end of the program.

if for example i put

counter VAR Word

FOR counter 1 = 100
PULSOUT 15, 1000
PAUSE 20
NEXT

END

My motor twitches and thats it
if i add DEBUG ""

counter VAR Word

FOR counter 1 = 150
PULSOUT 15, 1000
PAUSE 20
NEXT

DEBUG ""

END

The the motor goes throug the whole program

is there a way of getting the same result without putting a debug screen at the end?

Mike Green

What you've posted is not a valid program. The FOR statement has to be "FOR counter = 1 to 150". How about posting your actual program?

You should not need the DEBUG statement for it to work properly. I've used a program almost identical to your first example (with a correct FOR statement) for adjusting a servo and it's worked just as expected.

Nikolay

' {$STAMP BS2}
' {$PBASIC 2.5}

x VAR Word

FOR x = 1 TO 100
PULSOUT 15, 1000
PAUSE 20
NEXT

END

Here is the actual program

sorry for the error

Mike Green

There is nothing wrong with your program. Like I said, I've used the same program and it's worked as expected. I suspect there's something going on with your power source. Either it can't supply adequate power for the servo when that's starting up and the transient drop in voltage causes the Stamp to reset or noise is getting into the Stamp from the servo, again causing it to reset. You might try running the servo off a separate power supply (with a common ground). I'd normally suggest putting a DEBUG statement at the beginning of your program to display "Hello" or something like that. This would be executed every time the program starts and before the servo is activated and would indicate that your Stamp is repeatedly resetting. In your case, with the odd behavior placing DEBUG statements at the end, it might confuse things to put another DEBUG statement in.

Avery

Check out page 50 of What's a Microcontroller under "A Diagnostic Test for your Computer". Some computers have non-standard serial ports and need the debug statement to allow looping commands to work.

Nikolay

That's the problem, thanks for your help everyone.