Basic Stamp reading a variable from Processing, no luck

federico

Hi Everyone,
I'm trying to send a number with PROCESSING to be read by the Basic stamp 2 but so far no luck.
I'm using serin to read the number but nothing.
Any ideas on the code to use both for the Basic stamp and Processing? at this point i just need to check that they are able to communicate.
thanks a lot
Federico

Chris Savage

What is PROCESSING? Please elaborate on what it is you're trying to do.

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Chris Savage
Parallax Tech Support

federico

Hi Chris,
Processing is this open source programming language that works with Arduino microcontroller, is close to wiring, and so far I have found several examples on how to read FROM the basic stamp (using serout) to processing but not the opposite. the thing is that this language is getting really powerful in the physical computing scope and is being used for a lot of art projects incorporating microcontrollers
the web page of processing is
http://processing.org/

Chris Savage

I’m not familiar with the language, but as the BASIC Stamp 2 has no UART or FIFO buffers it needs to be waiting at the SERIN command to receive data from a remote device when that data is sent. If it is doing something else it will miss all or part of the data. You didn’t post any code so there’s no way to know what might be happening, but you may need to use handshaking to make sure data is sent only when the BASIC Stamp is ready to receive it. I hope this helps. Take care.

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Chris Savage
Parallax Tech Support

federico

thanks a lot Chris , sure is helpful!

stamptrol

Had a quick look at the Processing webpages.

Are you sure Processing has the capability to use a COM port by itself or does it depend on calling another program?

As Chris suggested, having a few sections of your code (from both sides) would enable much fuller answers.

Cheers,

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Tom Sisk

http://www.siskconsult.com
·

PAR

federico said...
Hi Everyone,
I'm trying to send a number with PROCESSING to be read by the Basic stamp 2 but so far no luck.
I'm using serin to read the number but nothing.
Any ideas on the code to use both for the Basic stamp and Processing? at this point i just need to check that they are able to communicate.
thanks a lot
Federico

As Chris noted, you haven't posted any PBasic and Processing code showing how you are trying to send from Processing to PBasic.

Are you using the Processing Libraries, ...\processing-0135\processing-0135\reference\libraries\index.html, the SERIAL library, ...\processing-0135\processing-0135\reference\libraries\serial\index.html,·and its methods/etc?· (Look in your Processing Help/Reference for the documentation.)

PAR

federico

thanks a lot for all your responses, Here is some processing code I'm trying. the thing is that I have no example code for the stap
some code:

import processing.serial.*;

Serial myPort; // The serial port
void setup()
{
background(255);
size(SCREEN_WIDTH ,SCREEN_HEIGHT);
setUpTextProperties();
setTextColor();
allNums = new ArrayList();

println(Serial.list());
myPort = new Serial(this, Serial.list(),
9600);
}

void draw()
{
currentFrame++;
if (currentFrame >= Long.MAX_VALUE)
{
currentFrame = 0;
}
if (currentFrame % TEXT_UPDATE_FREQ == 0)
{
getNums();
if (isThereANumber())
{
makeFinalNum();
}
}
text(finalNum, textHPos, textVPos);

sendSerial();
receSerial();
delay(10);
}
void sendSerial ()
{
myPort.write(finalNum);
}

void receSerial ()
{
while (myPort.available() > 0)
{
int inByte = myPort.read();
println(inByte);
}
}

And was is happening is that it just doesn't do anything- no errors, and the rest of
the code is running fine, but these parts might as
well not have been there (println is like the "debug" and it is not printing
anything.)

Franklin

For the stamp try something like

DO
DEBUG "Hello World!", CR
pause 5000
LOOP

Download the code to the stamp and check to see if it prints Hello World! in the debug screen. If that works close the stamp editor and try reading the stamp from your program.

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- Stephen