Code android e arduino

Processing Electronics (Arduino, etc.)
13

Hello,

Consider sending comma delimited data terminated with a ‘\n’:

import processing.serial.*;

Serial myPort;  // Create object from Serial class

int data;

void setup() 
  {
  size(200, 200);
  
  // List all the available serial ports
  printArray(Serial.list());
  
  String portName = Serial.list()[2];
  myPort = new Serial(this, portName, 9600);
  delay(1000);
  }

void draw() 
  {
  if(frameCount%10 == 0) //Sends every 1/6 second
    {
    String sData = nf(byte(data), 3);  // Only the LSB (least significant byte)
    //myPort.write(sData);  //This will send 0 to 255 and repeat; it is only sending the LSB (least significatn byte of the int)
    //myPort.write(',');
    
    String R = nf(int(random(256)), 3);
    //myPort.write(R); //R
    //myPort.write(',');
    
    String G = nf(int(random(256)), 3);
    //myPort.write(G); //R
    //myPort.write(','); 
    
    String B = nf(int(random(256)), 3);
    //myPort.write(B); //R
    //myPort.write('\n'); 
    
    //This replaces commented data above:
    myPort.write(sData + ',' + R + ',' + G + ',' + B + '\n'); 
    
    data++;
    }
  }

This is an example of the data strings it was sending:
000,183,109,014
001,170,200,221
002,243,029,109
003,200,061,115
004,180,070,156
005,080,132,113
…

The above is one way to do it; I found it easy to get substrings if data had leading 0’s and went with that.

On the Arduino side you will need to:

https://www.arduino.cc/reference/en/language/functions/communication/serial/readstringuntil/

https://www.arduino.cc/reference/en/language/variables/data-types/string/functions/trim/

https://www.arduino.cc/reference/en/language/variables/data-types/string/functions/substring/

https://www.arduino.cc/reference/en/language/variables/data-types/string/functions/toint/

:)