Circular DMA buffer
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9 changed files with 72 additions and 79 deletions
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@ -13,7 +13,8 @@
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extern pixel_t g_pixels[NUMPIXELS];
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#define SPIBUFFER_SIZE (SPIBUFFER_PIXELS * sizeof(pixel_t) * 8 / 2)
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#define SPIBUFFER_PIXEL_SIZE ( sizeof(pixel_t) * 4) // each raw pixel bit represented by 4 bits in SPI transfer
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#define SPIBUFFER_SIZE (SPIBUFFER_PIXELS * SPIBUFFER_PIXEL_SIZE)
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extern uint8_t g_spibuffer[2][SPIBUFFER_SIZE];
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