displaying text from serial port

Core Library Questions

applescha..

displaying text from serial port

in Core Library Questions • 9 months ago

hey guyz... i am a bit new with processing so i am a bit stuck in a not much hard situation, so here it goes.

i am getting data from a serial port char by char(done that part) . i have to show a string of 5 char in row then move to the next row. e.g

49999

39999

50000

20000

. but how can i code it so the first string stays there and move onto display next row because till now , i cant hold the first string to hold on when i move onto the next row.

thanx

Replies(4)

Diogo Tud..

Re: displaying text from serial port

9 months ago

I'm not sure if I understand what you want to do,

however, I'm quite sure that if you want to "hold"

a value, you have to store it somewhere, and that

place would be an array or a list.

Can you show us some code?

Best Regards,
Diogo Tudela
////////////////////////////////////
www.diogotudela.com

PhiLho

Re: displaying text from serial port

9 months ago

If you show some code, perhaps we can grasp better your goal.

applescha..

Re: displaying text from serial port

9 months ago

e.g this is my code, the problem is that the function writetext in Draw would display text with every new value in new line(which is fine), but i want to keep displaying all the values i get instead of just displaying the latest value recieved.

///////////////////////////////////////

import processing.serial.*;

Serial myPort;

String gps_error = "";

PFont font;

int widthadd = 30 , heightadd = 30 ;

void setup() {

size(1000,500);

myPort = new Serial(this, Serial.list()[0], 9600);

myPort.bufferUntil('\n');

font = createFont(PFont.list()[2],10);

textFont(font);

}

void draw()

{

writeText("GPS Error reading = " + gps_error ); //want to keep the older one and then display next

}

void serialEvent (Serial myPort){

gps_error = myPort.readStringUntil('\n');

// if(gps_error != null){

// gps_error=trim(gps_error);

// }

heightadd = heightadd + 30 ;

if (heightadd == 450)

{

heightadd= 30 ;

widthadd= 200;

}

void writeText(String textToWrite)

{

background(255);

fill(0);

text(textToWrite, widthadd, heightadd);

}

PhiLho

Re: displaying text from serial port

9 months ago

You should take a look at ArrayList.
With it, you can cumulate all the successive values you receive, and with a for loop, you can display they all.

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