pimoroni-pico/examples/plasma_stick/plasma_stick_alternating_bl...

55 lines
1.6 KiB
C++

#include "pico/stdlib.h"
#include "plasma_stick.hpp"
#include "common/pimoroni_common.hpp"
/*
This super simple example sets up two alternating colours, great for festive lights!
*/
using namespace pimoroni;
using namespace plasma;
// Set how many LEDs you have
const uint NUM_LEDS = 50;
// Pick two hues from the colour wheel (from 0-360°, try https://www.cssscript.com/demo/hsv-hsl-color-wheel-picker-reinvented/ )
constexpr float HUE_1 = 40.0f;
constexpr float HUE_2 = 285.0f;
// Set up brightness (between 0 and 1)
constexpr float BRIGHTNESS = 0.5f;
// Set up speed (wait time between colour changes, in seconds)
constexpr float SPEED = 1.0f;
// Set up the WS2812 / NeoPixel™ LEDs, with RGB color order to work with the LED wire that comes with Skully
WS2812 led_strip(NUM_LEDS, pio0, 0, plasma_stick::DAT, WS2812::DEFAULT_SERIAL_FREQ, false, WS2812::COLOR_ORDER::RGB);
int main() {
stdio_init_all();
// Start updating the LED strip
led_strip.start();
while(true) {
for(auto i = 0u; i < NUM_LEDS; i++) {
// the if statements below use a modulo operation to identify the even and odd numbered LEDs
if((i % 2) == 0)
led_strip.set_hsv(i, HUE_1 / 360, 1.0, BRIGHTNESS);
else
led_strip.set_hsv(i, HUE_2 / 360, 1.0, BRIGHTNESS);
}
sleep_ms(SPEED * 1000.0f);
for(auto i = 0u; i < NUM_LEDS; i++) {
if((i % 2) == 0)
led_strip.set_hsv(i, HUE_2 / 360, 1.0, BRIGHTNESS);
else
led_strip.set_hsv(i, HUE_1 / 360, 1.0, BRIGHTNESS);
}
sleep_ms(SPEED * 1000.0f);
}
}