72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
#include "pico/stdlib.h"
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#include <stdio.h>
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#include <math.h>
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#include "common/pimoroni_common.hpp"
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#include "breakout_potentiometer.hpp"
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using namespace pimoroni;
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I2C i2c(BOARD::BREAKOUT_GARDEN);
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BreakoutPotentiometer pot(&i2c);
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bool toggle = false;
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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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int main() {
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#ifdef PICO_DEFAULT_LED_PIN
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gpio_init(PICO_DEFAULT_LED_PIN);
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gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
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#endif
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stdio_init_all();
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if(pot.init()) {
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printf("Potentiometer found...\n");
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//pot.set_direction(BreakoutPotentiometer::DIRECTION_CCW); // Uncomment this to flip the direction
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while(true) {
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#ifdef PICO_DEFAULT_LED_PIN
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gpio_put(PICO_DEFAULT_LED_PIN, toggle);
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#endif
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toggle = !toggle;
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float percent = pot.read();
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printf("Percent: %d\n", (int)(percent * 100));
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uint8_t r = 0, g = 0, b = 0;
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from_hsv(percent, 1.0f, 1.0f, r, g, b);
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pot.set_led(r, g, b);
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sleep_ms(20);
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}
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}
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else {
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printf("Potentiometer not found :'(\n");
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#ifdef PICO_DEFAULT_LED_PIN
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gpio_put(PICO_DEFAULT_LED_PIN, true);
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#endif
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}
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return 0;
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}
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