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#include "drv/ws2812B/ws2812b.h"
#include "arch/stm32l4xxx/peripherals/spi.h"
#include "kern/dma/dma_manager.h"
#include "kern/mem.h"
#include "kern/panic.h"
uint8_t sintable[256] = {
128, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 162, 165, 167, 170,
173, 176, 179, 182, 185, 188, 190, 193, 196, 198, 201, 203, 206, 208, 211,
213, 215, 218, 220, 222, 224, 226, 228, 230, 232, 234, 235, 237, 238, 240,
241, 243, 244, 245, 246, 248, 249, 250, 250, 251, 252, 253, 253, 254, 254,
254, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 253, 253, 252, 251,
250, 250, 249, 248, 246, 245, 244, 243, 241, 240, 238, 237, 235, 234, 232,
230, 228, 226, 224, 222, 220, 218, 215, 213, 211, 208, 206, 203, 201, 198,
196, 193, 190, 188, 185, 182, 179, 176, 173, 170, 167, 165, 162, 158, 155,
152, 149, 146, 143, 140, 137, 134, 131, 128, 124, 121, 118, 115, 112, 109,
106, 103, 100, 97, 93, 90, 88, 85, 82, 79, 76, 73, 70, 67, 65,
62, 59, 57, 54, 52, 49, 47, 44, 42, 40, 37, 35, 33, 31, 29,
27, 25, 23, 21, 20, 18, 17, 15, 14, 12, 11, 10, 9, 7, 6,
5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 9, 10, 11,
12, 14, 15, 17, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35, 37,
40, 42, 44, 47, 49, 52, 54, 57, 59, 62, 65, 67, 70, 73, 76,
79, 82, 85, 88, 90, 93, 97, 100, 103, 106, 109, 112, 115, 118, 121,
124,
};
uint8_t byte_sin(uint8_t n)
{
return sintable[n];
}
uint8_t* ws2812b_compile_rgb(rgb_t* out_, size_t arr_len)
{
uint8_t* out = (uint8_t*)out_;
uint8_t* spi_out = kalloc(arr_len * 9);
if (!spi_out) {
panic("Unable to allocate spi_out\n");
}
size_t i;
size_t j;
for (i = 0, j = 0; i < arr_len * 3; ++i, j += 3) {
// stuff
uint8_t c = out[i];
spi_out[j] = 0 | (1 << 7) | ((c & (1 << 7)) << 6) | (0 << 5) | (1 << 4) |
((c & (1 << 6)) << 3) | (0 << 2) | (1 << 1) |
((c & (1 << 5)) << 0);
spi_out[j + 1] = 0 | (0 << 7) | (1 << 6) | ((c & (1 << 4)) << 5) |
(0 << 4) | (1 << 3) | ((c & (1 << 3)) << 2) | (0 << 1) |
(1 << 0);
spi_out[j + 2] = 0 | ((c & (1 << 2)) << 7) | (0 << 6) | (1 << 5) |
((c & (1 << 1)) << 4) | (0 << 3) | (1 << 2) |
((c & (1 << 0)) << 1) | (0 << 0);
}
return spi_out;
}
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