Christmas2014
Example sketch for driving Adafruit WS2801 pixels!
Download Christmas2014.ino - Arduino Sketch
Christmas2014
#include "Adafruit_WS2801.h"
#include "SPI.h" // Comment out this line if using Trinket or Gemma
#ifdef __AVR_ATtiny85__
#include <avr/power.h>
#endif
#include "RGBdriver.h"
#define NUMPIXELS 25
/*****************************************************************************
Example sketch for driving Adafruit WS2801 pixels!
Designed specifically to work with the Adafruit RGB Pixels!
12mm Bullet shape ----> https://www.adafruit.com/products/322
12mm Flat shape ----> https://www.adafruit.com/products/738
36mm Square shape ----> https://www.adafruit.com/products/683
These pixels use SPI to transmit the color data, and have built in
high speed PWM drivers for 24 bit color per pixel
2 pins are required to interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
*****************************************************************************/
// Choose which 2 pins you will use for output.
// Can be any valid output pins.
// The colors of the wires may be totally different so
// BE SURE TO CHECK YOUR PIXELS TO SEE WHICH WIRES TO USE!
uint8_t dataPin = 5; // Yellow wire on Adafruit Pixels
uint8_t clockPin = 4; // Green wire on Adafruit Pixels
// Don't forget to connect the ground wire to Arduino ground,
// and the +5V wire to a +5V supply
// Set the first variable to the NUMBER of pixels. 25 = 25 pixels in a row
Adafruit_WS2801 strip = Adafruit_WS2801(50, 5, 4);
Adafruit_WS2801 strip1 = Adafruit_WS2801(50, 3, 2);
RGBdriver strandDriver(6,7);
// Optional: leave off pin numbers to use hardware SPI
// (pinout is then specific to each board and can't be changed)
//Adafruit_WS2801 strip = Adafruit_WS2801(25);
// For 36mm LED pixels: these pixels internally represent color in a
// different format. Either of the above constructors can accept an
// optional extra parameter: WS2801_RGB is 'conventional' RGB order
// WS2801_GRB is the GRB order required by the 36mm pixels. Other
// than this parameter, your code does not need to do anything different;
// the library will handle the format change. Examples:
// Adafruit_WS2801 strip = Adafruit_WS2801(25, dataPin, clockPin, WS2801_GRB);
// Adafruit_WS2801 strip = Adafruit_WS2801(25, WS2801_GRB);
void sendBLACKPixels(void) {
strandDriver.begin();
for (int pixel = 0; pixel <= NUMPIXELS; pixel++) {
strandDriver.SetColor(0,0,0);
}
strandDriver.end();
}
void sendREDPixels(void) {
strandDriver.begin();
for (int pixel = 0; pixel < NUMPIXELS; pixel++) {
strandDriver.SetColor(0,0,255);
}
strandDriver.end();
}
void setup() {
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);
pinMode(A0, INPUT);
Serial.begin(9600);
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000L)
clock_prescale_set(clock_div_1); // Enable 16 MHz on Trinket
#endif
strip.begin();
strip1.begin();
// Update LED contents, to start they are all 'off'
strip.show();
strip1.show();
sendREDPixels();
}
void loop() {
rainbow(100);
}
void xxloop() {
// Some example procedures showing how to display to the pixels
//int sensorValue = analogRead(A0);
//if (sensorValue < 300) {
// colorWipe(Color(255, 0, 0), 100); colorWipe(Color(0, 0, 0), 100);
//} else {
rainbow(100);
colorWipe(Color(255, 0, 0), 100); colorWipe(Color(0, 255, 0), 100);
rainbowCycle(100);
colorWipe(Color(0, 255, 0), 100);
colorWipe(Color(255, 0, 0), 100);
colorWipe(Color(0, 255, 0), 100);
//}
}
void rainbowWhole(uint8_t wait) {
for (int j=0; j < 255; j++) { // 3 cycles of all 256 colors in the wheel
int c = Wheel(j % 256);
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip1.setPixelColor(i, c);
}
strip.show();
strip1.show();
delay(wait);
}
}
void rainbow(uint8_t wait) {
for (int j=0; j < 256; j++) { // 3 cycles of all 256 colors in the wheel
for (int i=0; i < strip.numPixels(); i++) {
for (int x=0; x < strip.numPixels(); x++) {
strip.setPixelColor(x, Wheel( (i + j) % 255));
strip1.setPixelColor(x, Wheel( (i + j) % 255));
}
}
strip.show(); // write all the pixels out
strip1.show(); // write all the pixels out
delay(wait);
}
}
// Slightly different, this one makes the rainbow wheel equally distributed
// along the chain
void rainbowCycle(uint8_t wait) {
for (int j=0; j < 256 * 5; j++) { // 5 cycles of all 25 colors in the wheel
for (int i=0; i < strip.numPixels(); i++) {
// tricky math! we use each pixel as a fraction of the full 96-color wheel
// (thats the i / strip.numPixels() part)
// Then add in j which makes the colors go around per pixel
// the % 96 is to make the wheel cycle around
strip.setPixelColor(i, Wheel( ((i * 256 / strip.numPixels()) + j) % 256) );
strip1.setPixelColor(i, Wheel( ((i * 256 / strip.numPixels()) + j) % 256) );
}
strip.show(); // write all the pixels out
strip1.show(); // write all the pixels out
delay(wait);
}
}
// fill the dots one after the other with said color
// good for testing purposes
void colorWipe(uint32_t c, uint8_t wait) {
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip1.setPixelColor(i, c);
strip.show();
strip1.show();
delay(wait);
}
}
/* Helper functions */
// Create a 24 bit color value from R,G,B
uint32_t Color(byte r, byte g, byte b)
{
uint32_t c;
c = r;
c <<= 8;
c |= g;
c <<= 8;
c |= b;
return c;
}
//Input a value 0 to 255 to get a color value.
//The colours are a transition r - g -b - back to r
uint32_t Wheel(byte WheelPos)
{
if (WheelPos < 85) {
return Color(WheelPos * 3, 255 - WheelPos * 3, 0);
} else if (WheelPos < 170) {
WheelPos -= 85;
return Color(255 - WheelPos * 3, 0, WheelPos * 3);
} else {
WheelPos -= 170;
return Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
}
This sketch is licensed under the MIT Licence