104 lines
2.1 KiB
C++
104 lines
2.1 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 "Config.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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Sparkle g_s[NUMSPARKLES];
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volatile uint8_t g_done = 0;
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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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for(int8_t shift = 6; shift >= 0; shift -= 2) {
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uint8_t mask = 3 << shift;
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*dst++ = bits[ (byte & mask) >> shift ];
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}
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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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#ifndef DBG_CHOSEN_PIXEL
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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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#else
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return DBG_CHOSEN_PIXEL;
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#endif // DBG_CHOSEN_PIXEL
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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(8)+3,rr(8)+3,rr(8)+3));
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}
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extern "C" void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
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{
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if(hspi == &hspi1) {
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g_done = true;
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}
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}
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extern "C" void App()
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{
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g_spibuffer[sizeof(g_spibuffer)-1] = 0;
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for(uint16_t px = 0; px < NUMPIXELS; ++px)
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g_pixels[px] = Pixel( DEFAULT_COLOR );
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uint32_t lastTick = HAL_GetTick();
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while(1)
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{
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while(HAL_GetTick() - lastTick < FRAMETIME );
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lastTick += FRAMETIME;
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HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
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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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HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
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convert((uint8_t*)g_pixels, g_spibuffer, sizeof(g_pixels));
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HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
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g_done = false;
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HAL_SPI_Transmit_DMA(&hspi1, g_spibuffer, sizeof(g_spibuffer));
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while(!g_done);
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HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
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}
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}
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