i understand what the errors are, but don't know how to correct the errors. I'm in the Arduino 1.0 environment using a pre-made example out of the Communication tab called Graph. Here are my errors and code. Thanks.
Graph:53: error: variable or field 'serialEvent' declared void
Graph:53: error: expected `)' before 'myPort'
Graph:54: error: 'import' does not name a type
Graph:56: error: 'Serial' does not name a type
Graph.cpp: In function 'void setup()':
Graph:62: error: 'size' was not declared in this scope
Graph:65: error: 'class HardwareSerial' has no member named 'list'
Graph:65: error: 'println' was not declared in this scope
Graph:69: error: 'myPort' was not declared in this scope
Graph:69: error: expected type-specifier before 'Serial'
Graph:69: error: expected `;' before 'Serial'
Graph:73: error: 'background' was not declared in this scope
Graph.cpp: At global scope:
Graph:85: error: variable or field 'serialEvent' declared void
Graph:85: error: expected `)' before 'myPort'
/*
Graph
A simple example of communication from the Arduino board to the computer:
the value of analog input 0 is sent out the serial port. We call this "serial"
communication because the connection appears to both the Arduino and the
computer as a serial port, even though it may actually use
a USB cable. Bytes are sent one after another (serially) from the Arduino
to the computer.
You can use the Arduino serial monitor to view the sent data, or it can
be read by Processing, PD, Max/MSP, or any other program capable of reading
data from a serial port. The Processing code below graphs the data received
so you can see the value of the analog input changing over time.
The circuit:
Any analog input sensor is attached to analog in pin 0.
created 2006
by David A. Mellis
modified 30 Aug 2011
by Tom Igoe and Scott Fitzgerald
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/Graph
*/
/*
void setup() {
// initialize the serial communication:
Serial.begin(9600);
}
void loop() {
// send the value of analog input 0:
Serial.println(analogRead(A0));
// wait a bit for the analog-to-digital converter
// to stabilize after the last reading:
delay(10);
}
*/
// ******************************************************************************
// Graphing sketch
// This program takes ASCII-encoded strings
// from the serial port at 9600 baud and graphs them. It expects values in the
// range 0 to 1023, followed by a newline, or newline and carriage return
// Created 20 Apr 2005
// Updated 18 Jan 2008
// by Tom Igoe
// This example code is in the public domain.
import processing.serial.*;
Serial myPort; // The serial port
int xPos = 1; // horizontal position of the graph
//********************************************************************
void setup () {
// set the window size:
size(400, 300);
// List all the available serial ports
println(Serial.list());
// I know that the first port in the serial list on my mac
// is always my Arduino, so I open Serial.list()[0].
// Open whatever port is the one you're using.
myPort = new Serial(this, Serial.list()[1], 9600);
// don't generate a serialEvent() unless you get a newline character:
myPort.bufferUntil('\n');
// set inital background:
background(0);
}
/*
//*************************************************************************
void draw () {
// everything happens in the serialEvent()
}
*/
//*************************************************************************
void serialEvent (Serial myPort) {
// get the ASCII string:
String inString = myPort.readStringUntil('\n');
if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// convert to an int and map to the screen height:
float inByte = float(inString);
inByte = map(inByte, 0, 1023, 0, height);
// draw the line:
stroke(127,34,255);
line(xPos, height, xPos, height - inByte);
// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 0;
background(0);
}
else {
// increment the horizontal position:
xPos++;
}
}
}
