/*
AnalogReadSerial
Reads an analog input on pin 0, prints the result to the serial monitor
This example code is in the public domain.
*/
void setup() {
Serial.begin(9600);
}
void loop() {
int sensorValue = analogRead(A0);
Serial.write(sensorValue);
delay(10);
}
Processing
//this is based on simple read example on processing.
import processing.serial.*; //includes serial library to processing
Serial myPort; // Create object from Serial class
int val = 0; // Data received from the serial port
int preVal = 0; //stores the previous sensor data
int xCoor = 0 ;//x coordinate for drawing line
int preXCoor = 0;//previous x coordinate for drawing line
void setup()
{
size(900, 900); //size of the sketch
// 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.
//println(Serial.list());//if you want to see possible ports that you can use you can use this line
String portName = Serial.list()[0];//we are connecting to port “0″
myPort = new Serial(this, portName, 9600);//this should match with Arduino’s baudrate
}
void serialEvent(Serial _whichPort){
int val = _whichPort.read();
if (val != -1){
// val = myPort.read(); // read it and store it in val
println(val);
// background(255); // Set background to white
xCoor++; //x position increases one pixel
println(val);
line(preXCoor, preVal, xCoor, val); //draws a line graph //line(x1, y1, x2 , y2)
if ( xCoor > 900) {// if line is out of the screen cleans the screen and starts from zero
xCoor = 0;
background(255);
}
preXCoor = xCoor; //x coordinate stored, we will use it as previous coordinate in the next frame.
preVal = val; //val stored, we will use it as previous val in the next frame.
}
}
void draw()
{
}
