processing與arduino和手指測試心跳模塊互動

import processing.serial.*;

Serial port;

float val;

float[] receiveDatas=new float[440];

int arrayLength=440;

int startIndex=0;

int dataLength=0;

void setup()

{

  size(440,440);  

  frameRate(30);

  strokeWeight(2);

  smooth();  

  port=new Serial(this,"COM6",115200);

  background(0);

}

void draw()

{

  background(0);

  if(port.available()>0)

  {

    String inString = port.readStringUntil('\n');

   if(!(inString == null))

   {

     val=int(trim(inString));

 receiveDatas[startIndex]=map(val,0,1023,0,height);

    startIndex=(startIndex+1)%arrayLength;

    dataLength=min(dataLength+1,arrayLength);}

  }

  stroke(0,255,0);

  for(int i=0;i<dataLength-1;i++)

  {

 line(i,receiveDatas[(startIndex+i)%arrayLength],i+1,receiveDatas[(startIndex+i+1)%arrayLength]);  println(receiveDatas[(startIndex+i)%arrayLength]);

  }

}