82 lines
1.5 KiB
C++
82 lines
1.5 KiB
C++
/*
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* App.cpp
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*
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* Created on: Dec 16, 2018
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* Author: abody
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*/
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#include "main.h"
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#include "stm32f1xx_hal.h"
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#include "dma.h"
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#include "spi.h"
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#include "gpio.h"
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#include <string.h>
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#include <stdlib.h>
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#include "Pixel.h"
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#include "LedBuffers.h"
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#include "Sparkle.h"
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#define NUMSPARKLES 10
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Sparkle g_s[NUMSPARKLES];
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void convert(uint8_t *src, uint8_t *dst, uint16_t size)
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{
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static uint8_t const bits[4] = { 0b10001000, 0b10001110, 0b11101000, 0b11101110 };
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while(size--) {
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uint8_t byte=*src++;
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uint8_t duo = 3;
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do {
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uint8_t mask = 3 << (duo<<1);
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*dst++ = bits[(byte & (mask))>>(duo<<1)];
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} while(duo--);
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}
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}
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inline uint16_t rr(uint16_t top)
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{
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return rand() % top;
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}
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uint16_t ChoosePixel()
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{
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volatile uint16_t chosen;
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uint16_t spi;
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do {
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chosen = rr(NUMPIXELS);
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for(spi=0; spi<NUMSPARKLES; ++spi) {
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if(static_cast<Pixel_t*>(g_s[spi]) && static_cast<Pixel_t*>(g_s[spi]) == &g_pixels[chosen])
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break;
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}
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} while(spi < NUMSPARKLES);
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return chosen;
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}
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void StartSparkle( Sparkle &s )
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{
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s.Start(g_pixels+ChoosePixel(), Pixel(255,255,255), Pixel(rr(5)+1,rr(5)+1,rr(5)+1));
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}
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extern "C" void App()
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{
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g_ledBits[sizeof(g_ledBits)-1] = 0;
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memset(g_pixels, 0, sizeof(g_pixels));
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while(1)
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{
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for(int16_t spi = 0; spi < NUMSPARKLES; ++spi) {
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if(static_cast<Pixel_t*>(g_s[spi]))
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g_s[spi].Step();
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else
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StartSparkle(g_s[spi]);
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}
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convert((uint8_t*)g_pixels, g_ledBits, sizeof(g_pixels));
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HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits));
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while(!g_done);
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HAL_Delay(5);
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}
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}
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