60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
#include "pico/stdlib.h"
|
|
|
|
#include "servo2040.hpp"
|
|
#include "button.hpp"
|
|
|
|
/*
|
|
Displays a rotating rainbow pattern on the Servo 2040's onboard LED bar.
|
|
|
|
Press "Boot" to exit the program.
|
|
*/
|
|
|
|
using namespace plasma;
|
|
using namespace servo;
|
|
|
|
// The speed that the LEDs will cycle at
|
|
const uint SPEED = 5;
|
|
|
|
// The brightness of the LEDs
|
|
constexpr float BRIGHTNESS = 0.4f;
|
|
|
|
// How many times the LEDs will be updated per second
|
|
const uint UPDATES = 50;
|
|
|
|
|
|
// Create the LED bar, using PIO 1 and State Machine 0
|
|
WS2812 led_bar(servo2040::NUM_LEDS, pio1, 0, servo2040::LED_DATA);
|
|
|
|
// Create the user button
|
|
Button user_sw(servo2040::USER_SW);
|
|
|
|
|
|
int main() {
|
|
stdio_init_all();
|
|
|
|
// Start updating the LED bar
|
|
led_bar.start();
|
|
|
|
float offset = 0.0f;
|
|
|
|
// Make rainbows until the user button is pressed
|
|
while(!user_sw.raw()) {
|
|
|
|
offset += (float)SPEED / 1000.0f;
|
|
|
|
// Update all the LEDs
|
|
for(auto i = 0u; i < servo2040::NUM_LEDS; i++) {
|
|
float hue = (float)i / (float)servo2040::NUM_LEDS;
|
|
led_bar.set_hsv(i, hue + offset, 1.0f, BRIGHTNESS);
|
|
}
|
|
|
|
sleep_ms(1000 / UPDATES);
|
|
}
|
|
|
|
// Turn off the LED bar
|
|
led_bar.clear();
|
|
|
|
// Sleep a short time so the clear takes effect
|
|
sleep_ms(100);
|
|
}
|