51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
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#include <stdio.h>
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#include <math.h>
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#include <cstdint>
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#include <cstring>
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#include "pico/stdlib.h"
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#include "common/pimoroni_common.hpp"
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#include "hub75.hpp"
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using namespace pimoroni;
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// Display size in pixels
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// Should be either 64x64 or 32x32 but perhaps 64x32 an other sizes will work.
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// Note: this example uses only 5 address lines so it's limited to 32*2 pixels.
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const uint8_t WIDTH = 32;
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const uint8_t HEIGHT = 32;
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Hub75 hub75(WIDTH, HEIGHT, nullptr);
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void __isr dma_complete() {
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hub75.dma_complete();
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}
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int main() {
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hub75.start(dma_complete);
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// Basic loop to draw something to the screen.
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// This gets the distance from the middle of the display and uses it to paint a circular colour cycle.
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while (true) {
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float offset = millis() / 10000.0f;
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for(auto x = 0u; x < WIDTH; x++) {
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for(auto y = 0u; y < HEIGHT; y++) {
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// Center our rainbow circles
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float x1 = ((int)x - WIDTH / 2);
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float y1 = ((int)y - HEIGHT / 2);
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// Get hue as the distance from the display center as float from 0.0 to 1.0f.
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float h = float(x1*x1 + y1*y1) / float(WIDTH*WIDTH + HEIGHT*HEIGHT);
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// Offset our hue to animate the effect
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h -= offset;
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hub75.set_hsv(x, y, h, 1.0f, 1.0f);
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}
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}
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hub75.flip();
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sleep_ms(1000 / 60);
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}
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}
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