51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include "pico/stdlib.h"
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#include "hardware/pio.h"
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#include "hardware/clocks.h"
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#include "ws2812.pio.h"
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void put_pixel(uint32_t pixel_grb)
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{
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pio_sm_put_blocking(pio0, 0, pixel_grb << 8u);
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}
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void put_rgb(uint8_t red, uint8_t green, uint8_t blue)
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{
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uint32_t mask = (green << 16) | (red << 8) | (blue << 0);
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put_pixel(mask);
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}
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int main()
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{
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//set_sys_clock_48();
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stdio_init_all();
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PIO pio = pio0;
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int sm = 0;
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uint offset = pio_add_program(pio, &ws2812_program);
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uint8_t cnt = 0;
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puts("RP2040-Zero WS2812 Test");
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ws2812_program_init(pio, sm, offset, 25, 800000, true);
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while (1)
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{
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for (cnt = 0; cnt < 0xff; cnt++)
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{
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put_rgb(cnt, 0xff - cnt, 0);
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sleep_ms(3);
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}
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for (cnt = 0; cnt < 0xff; cnt++)
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{
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put_rgb(0xff - cnt, 0, cnt);
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sleep_ms(3);
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}
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for (cnt = 0; cnt < 0xff; cnt++)
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{
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put_rgb(0, cnt, 0xff - cnt);
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sleep_ms(3);
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}
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}
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}
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