40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#include "main.h"
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#include "display.h"
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__attribute__((section(".sdram")))
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volatile pixel_t framebuffer1[DISPLAY_HEIGHT * DISPLAY_WIDTH];
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volatile pixel_t framebuffer2[DISPLAY_HEIGHT * DISPLAY_WIDTH];
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volatile pixel_t *current_framebuffer = framebuffer1;
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volatile pixel_t *next_framebuffer = framebuffer2;
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extern LTDC_HandleTypeDef hltdc;
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extern DMA2D_HandleTypeDef hdma2d;
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void HAL_LTDC_LineEventCallback(LTDC_HandleTypeDef *hltdc)
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{
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// Swap the LTDC's active framebuffer address to the back buffer
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HAL_LTDC_SetAddress(hltdc, (uint32_t)current_framebuffer, 0);
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// Clear the Line Interrupt pending bit
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HAL_NVIC_DisableIRQ(LTDC_IRQn);
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}
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void copy_current_to_next_framebuffer(void)
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{
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for (uint32_t i = 0; i < DISPLAY_HEIGHT * DISPLAY_WIDTH; i++)
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{
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next_framebuffer[i] = current_framebuffer[i];
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}
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}
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void swap_framebuffers(void)
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{
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volatile pixel_t *temp = current_framebuffer;
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current_framebuffer = next_framebuffer;
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next_framebuffer = temp;
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HAL_LTDC_ProgramLineEvent(&hltdc, 296);
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HAL_NVIC_EnableIRQ(LTDC_IRQn);
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copy_current_to_next_framebuffer();
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} |