24. November 2011

In dieser Übung war das Ziel mit Hilfe von MouseX und MouseY Positionen 3 verschiedene LED zu dimmen (unterschiedlich). Arduino Code

#define BUFFER_SIZE 20 // actual size of the buffer for integer values: (numberOfValsToRead*6)+(numberOfValsToRead-1)
#define LED 10
#define LED2 5
#define LED3 3
#define Motor 6

/*SENSOR BEGIN*/

// Read the MMA7455

#include <Wire.h>
#include <MMA_7455.h>

MMA_7455 mySensor = MMA_7455();

char xVal, yVal, zVal;

int xoldVal = 0;
int xnewVal = 0;
int yoldVal = 0;
int ynewVal = 0;
int zoldVal = 0;
int znewVal = 0;

/*SENSOR ENDE*/

char incommingBuffer[BUFFER_SIZE]; // buffer to store incomming values
char incomming; // primary buffer to store single incommning bytes
int incommingCounter = 0; // counter for counting the positions inside the buffer

int firstValue, secondValue, thirdValue; // fourthValue, fifthValue, ... // add more if needed

void setup()
{
Serial.begin(9600);
pinMode(LED, OUTPUT);
pinMode(Motor, OUTPUT);

mySensor.initSensitivity(2);
mySensor.calibrateOffset(22, 35, 4);
}

void readSerial()
{
while(Serial.available())
{
incomming = Serial.read(); // read single incommning bytes

if(incomming != '\r') //if no carriage return is received proceed in reading the serial port
{
incommingBuffer[incommingCounter++] = incomming; // go on the next position in the buffer
}
else //read until a carriage ('\r') is received
{
incommingBuffer[incommingCounter] = '\0'; // set the last byte to NULL to sign it for the string operators

char *a = strtok(incommingBuffer, ",.;"); // split the string after delimiters into tokens
char *b = strtok(NULL, ",.;"); // ...
char *c = strtok(NULL, ",.;"); // ...
//char *d = strtok(NULL, ",.;"); // add another line if needed

firstValue = atoi(a); // convert the strings into integers
secondValue = atoi(b); // ...
thirdValue = atoi(c); // ...
//fourthValue = atoi(d); // add another line if needed

incommingCounter = 0; // reset the counter
memset(incommingBuffer, 0, BUFFER_SIZE); //overwrite the incommingBuffer
}
}
}

void loop()
{
xVal = mySensor.readAxis('x');
yVal = mySensor.readAxis('y');
zVal = mySensor.readAxis('z');

xnewVal = (0.80*xoldVal)+(0.2*xVal);
ynewVal = (0.80*yoldVal)+(0.2*yVal);
znewVal = (0.80*zoldVal)+(0.2*zVal);

Serial.print(xnewVal, DEC);
Serial.print('\t');
Serial.print(ynewVal, DEC);
Serial.print('\t');
Serial.print(znewVal, DEC);
Serial.print('\t');
Serial.println();

xoldVal = xnewVal;
yoldVal = ynewVal;
zoldVal = znewVal;

readSerial(); // read the values available at the serial port

analogWrite(LED, firstValue);
analogWrite(Motor, secondValue);

/*
Serial.print(firstValue); // debugging
Serial.print("\t");
Serial.print(secondValue);
Serial.print("\t");
Serial.print(thirdValue);
Serial.print("\t");
//Serial.print(fourthValue); // add these lines if needed
Serial.println(); // send a carriage return for debugging
*/
}

Processing Code

import processing.serial.*;  // Import the Processing Serial Library for communicating with arduino
Serial myPort;               // The used Serial Port

int xnewVal, ynewVal, znewVal; // fourthValue, fifthValue, ... // add more if needed
int xPosition;
float xRotation, yRotation;

void setup()
{
size(500, 500, P3D);
background(0);
println(Serial.list()); // Prints the list of serial available devices (Arduino should be on top of the list)
myPort = new Serial(this, Serial.list()[0], 9600); // Open a new port and connect with Arduino at 9600 baud
}

void draw()
{
myPort.write(str(int(map(mouseX,0, 500, 0,255)))); // Write our Variable to Arduino
myPort.write(","); // Send a carriage-return to Arduino
myPort.write(str(int(map(mouseY,0, 500, 0,255)))); // Write our Variable to Arduino
myPort.write(","); // Send a carriage-return to Arduino
myPort.write(str(int(map(mouseX,0, 500, 0,255)))); // Write our Variable to Arduino
myPort.write(","); // Send a carriage-return to Arduino

myPort.write("\r");
//println(int(map(mouseX,0, 500, 0,255)));
//delay(200);
/*myPort.write(str(0)); // Write our Variable to Arduino
myPort.write("\r"); // Send a carriage-return to Arduino
delay(200);*/
}