how to read the data in PBASIC to other program? --- help~~

blue yiu

Hi, I am a new user. But what I want to do is to export the variable in real time
to other program (e.g. Matlab or C or.....). If anyone know how I can export the variable
to a file in real time which I can read from other program. That will be great.

thanks a lot.

Newzed

If you send the data to Hyperterminal, then in Hyperterminal you could capture it to an Excel or a Word program.· I've done it many times.

Sid

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Sid Weaver

Yesterday is history, tomorrow is a mystery, and today is a gift.
That is why they call it the present.

Don't have VGA?
Newzed@aol.com
·

blue yiu

Thanks Sid. However, the excel will capture the value. But how can my program read it at real time?
Can it output to a pure text file? If yes, then other program might be able to share the same data in the file.
Any help would be appreciate! Thanks a lot.

Newzed

Does your Stamp have a DS1302 or other RTC that could time stamp the data you send to Hyper.· If not,and you don't want to add one, then you will probably have to go to Visual Basic.

Sid

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Yesterday is history, tomorrow is a mystery, and today is a gift.

That is why they call it the present.

Don't have VGA?
Newzed@aol.com
·

blue yiu

I really appreciate your help, Sid. But I think I am too new in this. I am having a BS2 basic board. And going to get the ultra sound sensor. I only want to read the signal from the standard program they have which store the time in a variable in PBASIC. Do you have any idea what can I do? Thanks again! ^^ and happy valentine's day!

Newzed

"I only want to read the signal from the standard program they have which store the time in a variable in PBASIC."

Candy, how can you store time if you don't have an RTC?· Did you mean what you wrote in the above statement?

And Happy Valentine day to you!

Sid

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Yesterday is history, tomorrow is a mystery, and today is a gift.

That is why they call it the present.

Don't have VGA?
Newzed@aol.com
·

blue yiu

Here is the program: this "time" variable is the data I want it in real time. It is in a loop so it will basically run forever.
I actually not sure what is RTC ( sorry =( ). But here you go:

time VAR Word
DO
PULSOUT 15, 5
PULSIN 15, 1, time
DEBUG HOME, "time = ", DEC5 time
PAUSE 100
LOOP

Kevin Wood

RTC stands for Real Time Clock. Here is the one Parallax sells:

www.parallax.com/detail.asp?product_id=604-00005

The Basic Stamp can't keep accurate time by itself, so it needs the help of a real time clock. The RTC keeps the time, and the Basic Stamp reads the time from the RTC. If you need to log that info with Matlab or C, you could write a program that sends a command to the BS2 that tells it to return the time. The BS2 will read the time, and write it to the serial port, where your program reads the value, then writes it to a file.

Franklin

Your BS can output serial data. you need to capture that data with your other program (Matlab or c or...) debug does this on port 15 I think but any pin can be used with serout.

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- Stephen

Phil Pilgrim (PhiPi)

Awhile back I posted a program (ser2ftp.exe) that will do what you describe. It will also ftp the data to a remote site, if you want it to. In addition, it has the ability to schedule the upload of data at programmable time intervals, letting the PC keep track of the time and scheduling. Perhaps it will work for you.

-Phil

Tom Walker

blue yiu,
If I understand you correctly, you wish to get the contents of the "time" variable from the "read the distance sensor" program on your Stamp into the PC for display/processing in "real time". Does this sound correct?

It looks like your program gets continuous readings from the distance sensor. Then your program sends the value of your "time" variable to your PC using the DEBUG statement. Now what you need is a way to "capture" that value on the PC side for processing. As long as your Stamp IDE software is not running, any program on the PC that can read the serial port can receive this value...StampPlot is one way, programming something to listen to the serial port is another. The important thing to remember is that your Stamp programming IDE must be closed so that it does not keep any other program from getting to the serial port.

I think we ran into a little language speed bump which led to discussions about the need for a real-time clock. If you really need to know the time a reading being transmitted to the PC happened (as opposed to the value of the "time" variable that is the "time of flight" of your sonar signal), this is usually handled by the PC when it is being used as the data logger. RTCs become necessary when the data collection is handled by a "stand-alone" system and then later "downloaded" to the PC.

If you really need a "file" to be transmitted, then Phil's suggestion should work for you.

I hope I haven't confused things too much.

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Truly Understand the Fundamentals and the Path will be so much easier...

blue yiu

Thanks guys. It really helps. I actually don't necessary need a file. I only need the data in real time. I don't want to use "excel" because the experiment will run a long time. It might hang at some point I predict. But I will need to figure out how to read from the serial port then. Thanks a lot!