Text should stay

Programming Questions

myetec

in Programming Questions • 1 year ago

Hello,

i have this code:

import processing.serial.*;
PFont font;
int lf = 10; // Linefeed in ASCII
String myString = null;
Serial myPort; // Serial port you are using
float num;
void setup() {
myPort = new Serial(this, Serial.list()[0], 9600);
myPort.clear();
font = createFont("Arial", 12, false);
textFont(font, 14);
}
void draw() {
background(0);
fill(0,255,0);
while (myPort.available() > 0) {
myString = myPort.readStringUntil(lf);
if (myString != null) {
print(myString); // Prints String
num=float(myString); // Converts and prints float
println(num);
text(myString,10,10);
}
}
myPort.clear();

}

The value is coming from my arduino board, i'd like to display the value, but the value does blink up shortly and dissapears then. I'd like to show it permantent.

Replies(1)

quarks

Re: Text should stay

1 year ago

The draw() method is executed ~60 times per second so (in the code below) it will update myString if the port is available otherwise it will display the existing value.

void draw() {
background(0);
fill(0, 255, 0);
if(myPort.available () > 0) {
myString = myPort.readStringUntil(lf);
}
if (myString != null) {
print(myString); // Prints String
num=float(myString); // Converts and prints float
println(num);
text(myString, 10, 10);
}
myPort.clear();
}

Text should stay

Replies(1)

Re: Text should stay

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