163 lines
3.5 KiB
C++
163 lines
3.5 KiB
C++
#include <Homie.h>
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// homie lib from: https://github.com/marvinroger/homie-esp8266/
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#include <Adafruit_NeoPixel.h>
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#ifdef __AVR__
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#include <avr/power.h>
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#endif
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#define PIN 2 //data pin for ws2812
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Adafruit_NeoPixel strip = Adafruit_NeoPixel(64, PIN, NEO_GRB + NEO_KHZ800);
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HomieNode homieNode("pixel", "commands");
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int xyToPos(int x, int y){ //convert x y pixel position to matrix position
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if (y%2==0){
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return (y*8+x);
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}else{
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return (y*8+(7-x));
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}
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}
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int numToPos(int num){ //convert pixel number to actual 8x8 matrix position
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int x=num%8;
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int y=num/8;
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return xyToPos(x,y);
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}
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uint32_t wheel(byte WheelPos) {
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WheelPos = 255 - WheelPos;
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if(WheelPos < 85) {
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return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
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}
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if(WheelPos < 170) {
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WheelPos -= 85;
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return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
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}
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WheelPos -= 170;
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return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
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}
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void led_fill(uint32_t c)
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{
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for (int i=0; i < strip.numPixels(); i++) {
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strip.setPixelColor(i, c);
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}
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strip.show();
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}
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void led_random()
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{
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for (int i=0; i < strip.numPixels(); i++) {
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strip.setPixelColor(i, wheel(random(0,255)));
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}
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strip.show();
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}
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uint32_t parseColor(String value){
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if (value.charAt(0)=='#'){ //solid fill
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String color=value.substring(1);
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int number = (int) strtol( &color[0], NULL, 16);
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// Split them up into r, g, b values
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int r = number >> 16;
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int g = number >> 8 & 0xFF;
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int b = number & 0xFF;
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Homie.getLogger() << "r=" << r << " g=" << g << " b=" << b << endl;
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//Serial.print("r=");Serial.print(r);
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//Serial.print(" g=");Serial.print(g);
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//Serial.print(" b=");Serial.println(b);
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return strip.Color(r, g, b);
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}
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return 0;
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}
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bool effectHandler(const HomieRange& range, const String& value) {
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Homie.getLogger() << "-> " << value << endl;
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int sep = value.indexOf("|");
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String command=value.substring(0,sep);
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String parameters=value.substring(sep+1);
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Homie.getLogger() << "command=" << command << " parameters=" << parameters << endl;
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if (command.equals("fill")){
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led_fill(parseColor(parameters));
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}else if (command.equals("off")){
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led_fill(strip.Color(0, 0, 0));
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}else if (command.equals("random")){
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led_random();
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}else if (command.equals("set")){
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int x=parameters.substring(0,1).toInt();
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int y=parameters.substring(1,2).toInt();
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String cstr=parameters.substring(2,9);
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strip.setPixelColor(xyToPos(x,y), parseColor(cstr));
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strip.show();
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}
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return true;
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}
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bool pixelsHandler(const HomieRange& range, const String& value) {
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String remaining=value;
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int i=0;
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do{
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String current=remaining.substring(0,7);
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Homie.getLogger() << i << ":" << current << endl;
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uint32_t currentcolor=parseColor(current);
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strip.setPixelColor(i, currentcolor);
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i++;
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remaining=remaining.substring(7);
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}while(remaining.length()>2 && (i<strip.numPixels()));
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Homie.getLogger() << " filling rest with black" << endl;
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while(i<strip.numPixels()){
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strip.setPixelColor(numToPos(i), strip.Color(0,0,0));
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i++;
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}
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strip.show();
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return true;
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}
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void setup() {
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Serial.begin(115200);
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Serial << endl << endl;
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Homie_setFirmware("pixelprojektor", "1.0.0");
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homieNode.advertise("effect").settable(effectHandler);
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homieNode.advertise("pixels").settable(pixelsHandler);
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strip.begin();
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strip.show(); // Initialize all pixels to 'off'
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led_fill(strip.Color(0, 0, 0));
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Homie.setup();
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}
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void loop() {
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Homie.loop();
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long currentMillis = millis();
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}
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