這個範例所使用的是加速度感應器
耐心好重要...我常常缺乏看程式的耐心
import processing.serial.*;
Serial myPort; // Create object from Serial class
int val; // Data received from the serial port
int i;
int X[] = {0};//x軸加速度
int Y[] = {0};//y軸加速度
int Z[] = {0}//;z軸加速度
void setup()
{
size(400, 400);
// I know that the first port in the serial list on my mac
// is always my FTDI adaptor, so I open Serial.list()[0].
// On Windows machines, this generally opens COM1.
// Open whatever port is the one you're using.
String portName = Serial.list()[0];
myPort = new Serial(this, portName, 9600);
}
void draw()
{
if ( myPort.available() > 0)
{
String val = myPort.readStringUntil('\n');
if (val != null)
{
val = trim(val);//如果val = X123 Y456 Z789,空白會被清除掉
String getX = val.substring(val.indexOf("X")+1,val.indexOf("Y"));//從X擷取到Y,會擷取出123 // intdexOf可以指出某個元素的位置
String getY = val.substring(val.indexOf("Y")+1,val.indexOf("Z"));//從Y擷取到Z,會擷取出456
String getZ = val.substring(val.indexOf("Z")+1);////從Z擷取,會擷取出789
//println("X" + getX + "Y" + getY + "Z" + getZ); //(學習筆記,可以這樣顯示)
X[0] = Integer.parseInt(getX);//x軸加速度,把string轉int儲存
Y[0] = Integer.parseInt(getY);//y軸加速度,把string轉int儲存
Z[0] = Integer.parseInt(getZ);//z軸加速度,把string轉int儲存
plot();
}
}
}
void plot()
{
background(0);
text(X[0],100,100);
text(Y[0],200,100);
text(Z[0],300,100);
}
//arduino
/*
// ADXL3xx
//
// Reads an Analog Devices ADXL3xx accelerometer and communicates the
// acceleration to the computer. The pins used are designed to be easily
// compatible with the breakout boards from Sparkfun, available from:
// https://www.sparkfun.com/commerce/categories.php?c=80
//
// https://www.arduino.cc/en/Tutorial/ADXL3xx
//
// The circuit:
// analog 0: accelerometer self test
// analog 1: z-axis
// analog 2: y-axis
// analog 3: x-axis
// analog 4: ground
// analog 5: vcc
//
// created 2 Jul 2008
// by David A. Mellis
// modified 26 Jun 2009
// by Tom Igoe
// these constants describe the pins. They won't change:
const int groundpin = 18; // analog input pin 4 -- ground
const int powerpin = 19; // analog input pin 5 -- voltage
const int xpin = 1; // x-axis of the accelerometer
const int ypin = 2; // y-axis
const int zpin = 3; // z-axis (only on 3-axis models)
void setup()
{
// initialize the serial communications:
Serial.begin(9600);
// Provide ground and power by using the analog inputs as normal
// digital pins. This makes it possible to directly connect the
// breakout board to the Arduino. If you use the normal 5V and
// GND pins on the Arduino, you can remove these lines.
pinMode(groundpin, OUTPUT);
pinMode(powerpin, OUTPUT);
digitalWrite(groundpin, LOW);
digitalWrite(powerpin, HIGH);
}
void loop()
{
// print the sensor values:
int x = analogRead(xpin);
int y = analogRead(ypin);
int z = analogRead(zpin);
Serial.print("X");
Serial.print(x);
Serial.print("Y");
Serial.print(y);
Serial.print("Z");
Serial.print(z);
Serial.println();
// delay before next reading:
delay(100);
}
*/
