Problems with processing 3 -please read

Other Hardware Sensors
1

Hello everyone I have problems with a proessing code I'm trying to write a sketch to measure the heartbeat and make a graph on processing.
gives me problems with this processing sketch:

import processing.serial.*;
Serial myPort;
int xPos = 1;
float oldHeartrateHeight = 0;

void setup () {
// set the window size:
size(1000, 400);
frameRate(30);

// List available serial ports.
println(Serial.list());

// Setup which serial port to use.
// This line might change for different computers.
myPort = new Serial(this, Serial.list()[0], 9600);

// set inital background:
background(0);
}

void draw () {
}

void serialEvent (Serial myPort) {
// read the string from the serial port.
String inString = myPort.readStringUntil('\n');

if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// convert to an int
println(inString);
int currentHeartrate = int(inString);

// draw the Heartrate BPM Graph.
float heartrateHeight = map(currentHeartrate, 0, 1023, 0, height);
stroke(0,255,0);
line(xPos - 1, height - oldHeartrateHeight, xPos, height - heartrateHeight);
oldHeartrateHeight = heartrateHeight;
// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 0;
background(0);
} else {
// increment the horizontal position:
xPos++;
}
}
}

the error is given to me in line 12 or println (Serial.list ());
could someone help me?
it does not even show me the graph,I 'm new on processing and I do not know how to move

2

This is an Arduino forum. You will get better help from the Processing forum.

You will need to post the error message in its entirety if you expect help.

3

They removed the registration from the forum

4

I use Processing , some. If you post the message I will see if I can help.

5

The error says
Type String of the last argument to method println(Object...) doesen't exactly match the vararg parameter type. Cast Object to confirm the non-varargs invocation,or pass individual arguments of type Object for a varags invocations.
in line 12

Thanks

6

Your code compiles fine with my Processing ver 3.3.6. I, then, did a search for your error and found this thread which may help.

7

Now I don't have any error bu the graphic doesen't work; When i run the sketch it opens the graphic wndow but I see a black screen.

8

I don't know if it is appropriate to continue this, Processing, discussion in the Arduino Sensors forum. I suggest that we use PM.