Add version for the Particle Photon

This commit is contained in:
Molly Nicholas 2015-12-13 09:36:59 -08:00
parent 586415a57a
commit 7c154f79b7
1 changed files with 118 additions and 0 deletions

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// This #include statement was automatically added by the Particle IDE.
#include "neopixel/neopixel.h"
// IMPORTANT: Set pixel COUNT, PIN and TYPE
#define PIXEL_COUNT 4
#define PIXEL_PIN D0
#define PIXEL_TYPE WS2812B
// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// note: if not specified, D2 is selected for you.
// Parameter 3 = pixel type [ WS2812, WS2812B, WS2811, TM1803 ]
// note: if not specified, WS2812B is selected for you.
// note: RGB order is automatically applied to WS2811,
// WS2812/WS2812B/TM1803 is GRB order.
//
// 800 KHz bitstream 800 KHz bitstream (most NeoPixel products ...
// ... WS2812 (6-pin part)/WS2812B (4-pin part) )
//
// 400 KHz bitstream (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// (Radio Shack Tri-Color LED Strip - TM1803 driver
// NOTE: RS Tri-Color LED's are grouped in sets of 3)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);
const int HIGH_STRIKE_LIKELIHOOD = 5;
const int LOW_STRIKE_LIKELIHOOD = 10;
int currentDataPoint = 0;
int chance = LOW_STRIKE_LIKELIHOOD;
// Simple moving average plot
int NUM_Y_VALUES = 17;
float yValues[] = {
0,
7,
10,
9,
7.1,
7.5,
7.4,
12,
15,
10,
0,
3,
3.5,
4,
1,
7,
1
};
float simple_moving_average_previous = 0;
float random_moving_average_previous = 0;
void setup() {
strip.begin(); // Sends the start protocol for the LEDs.
strip.show(); // Initialize all pixels to 'off'
Particle.function("lightning", triggerWeather);
}
void loop() {
}
int triggerWeather(String command) {
if (command==String("f")) {
int led = random(PIXEL_COUNT);
for (int i = 0; i < 10; i++) {
// Use this line to keep the lightning focused in one LED.
// lightningStrike(led):
// Use this line if you want the lightning to spread out among multiple LEDs.
lightningStrike(random(PIXEL_COUNT));
}
// Once there's been one strike, I make it more likely that there will be a second.
chance = HIGH_STRIKE_LIKELIHOOD;
} else {
chance = LOW_STRIKE_LIKELIHOOD;
}
turnAllPixelsOff();
delay(1000);
}
void turnAllPixelsOff() {
for (int i = 0; i < PIXEL_COUNT; i++) {
strip.setPixelColor(i, 0);
}
strip.show();
}
void lightningStrike(int pixel) {
float brightness = simple_moving_average();
float scaledWhite = abs(brightness*500);
strip.setPixelColor(pixel, strip.Color(scaledWhite, scaledWhite, scaledWhite));
strip.show();
delay(random(5, 100));
currentDataPoint++;
currentDataPoint = currentDataPoint%NUM_Y_VALUES;
}
// https://en.wikipedia.org/wiki/Moving_average#Simple_moving_average
float simple_moving_average() {
uint32_t startingValue = currentDataPoint;
uint32_t endingValue = (currentDataPoint+1)%NUM_Y_VALUES;
float simple_moving_average_current = simple_moving_average_previous +
(yValues[startingValue])/NUM_Y_VALUES -
(yValues[endingValue])/NUM_Y_VALUES;
simple_moving_average_previous = simple_moving_average_current;
return simple_moving_average_current;
}