Read Serial Value (From Arduino)

Processing.py
3

It does not work.

This will work with Processing 3.5.4 Python mode:

# Python Serial Reading
# v1.0.0
# GLV 2022-06-11

add_library("serial")
myPort = Serial(this, "COM2", 9600)
inString = ""

def setup():
    size(400, 100)

    # This does not work:
    #myPort.bufferUntil(ENTER)
    
    # This works:
    myPort.bufferUntil(0x0A)
    
    textSize(24);
    textAlign(LEFT, CENTER);
    fill(0);
    noLoop()
    
def draw():
    background(255); # I needed something here
    text (inString, 50, height/2);
    
def serialEvent(Serial):
    global inString
    
    # This does not work:
    # inString = myPort.readString().trim() 
    
    # This works:
    inString = myPort.readString()
    inString = trim(inString)
    
    println(inString)
    
    arr = inString.split(",")
    for i in arr:
        print(i)
    
    redraw()

Above code does NOT work with Processing 4.0.b8

You can use a virtual serial port if you do not have hardware.
There is one available here:
https://www.hhdsoftware.com/
See bottom for free version.

Use any serial software or code of your choice to send serial data.
I used the Serial Monitor that comes with Arduino software (hardware not required) to send data.

image
image630×618 26.1 KB

This is the link to the free virtual serial port software that I tested:

Disclaimer: Use at your own risk!
This is just one of many options out there.

:)

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