kopia lustrzana https://github.com/pimoroni/pimoroni-pico
93 wiersze
2.2 KiB
C++
93 wiersze
2.2 KiB
C++
#include <stdio.h>
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#include "pico/stdlib.h"
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#include "plasma_stick.hpp"
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#include "common/pimoroni_common.hpp"
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#include "breakout_encoder.hpp"
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/*
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Change the colour of your LEDs easily by hooking up an RGB Encoder Breakout!
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*/
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using namespace pimoroni;
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using namespace plasma;
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// Set how many LEDs you have
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const uint NUM_LEDS = 50;
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// Make this number bigger for more precise colour adjustments
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const uint STEPS_PER_REV = 24;
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// WS28X-style LEDs with a single signal line. AKA NeoPixel
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WS2812 led_strip(NUM_LEDS, pio0, 0, plasma_stick::DAT);
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I2C i2c(BOARD::PLASMA_STICK);
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BreakoutEncoder enc(&i2c);
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// HSV Conversion expects float inputs in the range of 0.00-1.00 for each channel
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// Outputs are rgb in the range 0-255 for each channel
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void from_hsv(float h, float s, float v, uint8_t &r, uint8_t &g, uint8_t &b) {
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float i = floor(h * 6.0f);
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float f = h * 6.0f - i;
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v *= 255.0f;
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uint8_t p = v * (1.0f - s);
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uint8_t q = v * (1.0f - f * s);
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uint8_t t = v * (1.0f - (1.0f - f) * s);
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switch (int(i) % 6) {
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case 0: r = v; g = t; b = p; break;
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case 1: r = q; g = v; b = p; break;
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case 2: r = p; g = v; b = t; break;
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case 3: r = p; g = q; b = v; break;
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case 4: r = t; g = p; b = v; break;
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case 5: r = v; g = p; b = q; break;
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}
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}
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void count_changed(int16_t count) {
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printf("Count: %d\n", count);
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float h = (count % STEPS_PER_REV) / (float)STEPS_PER_REV;
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uint8_t r = 0, g = 0, b = 0;
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from_hsv(h, 1.0f, 1.0f, r, g, b);
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// set the encoder LED colour
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enc.set_led(r, g, b);
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for(auto i = 0u; i < NUM_LEDS; i++) {
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led_strip.set_rgb(i, r, g, b);
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}
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}
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int main() {
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stdio_init_all();
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led_strip.start();
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if(enc.init()) {
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printf("Encoder found...\n");
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enc.set_brightness(1.0f);
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//enc.set_direction(BreakoutEncoder::DIRECTION_CCW); // Uncomment this to flip the direction
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count_changed(0);
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enc.clear_interrupt_flag();
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while(true) {
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if(enc.get_interrupt_flag()) {
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int16_t count = enc.read();
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enc.clear_interrupt_flag();
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while(count < 0) {
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count += STEPS_PER_REV;
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}
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count_changed(count);
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}
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}
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}
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else {
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printf("Encoder not found :'(\n");
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}
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return 0;
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}
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