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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, 148, 156, 162, 168, 172, 177, 181, 184, 187, 191, 194, 196, 199, 202,
204, 207, 209, 211, 213, 215, 217, 219, 221, 223, 224, 226, 228, 229, 231,
232, 233, 235, 236, 237, 239, 240, 241, 242, 243, 244, 245, 246, 246, 247,
248, 249, 249, 250, 251, 251, 252, 252, 253, 253, 253, 254, 254, 254, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 253, 253,
253, 252, 252, 251, 251, 250, 249, 249, 248, 247, 246, 246, 245, 244, 243,
242, 241, 240, 239, 237, 236, 235, 233, 232, 231, 229, 228, 226, 224, 223,
221, 219, 217, 215, 213, 211, 209, 207, 204, 202, 199, 196, 194, 191, 187,
184, 181, 177, 172, 168, 162, 156, 148, 128, 108, 100, 94, 88, 84, 79,
75, 72, 69, 65, 62, 60, 57, 54, 52, 49, 47, 45, 43, 41, 39,
37, 35, 33, 32, 30, 28, 27, 25, 24, 23, 21, 20, 19, 17, 16,
15, 14, 13, 12, 11, 10, 10, 9, 8, 7, 7, 6, 5, 5, 4,
4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 6, 7,
7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21,
23, 24, 25, 27, 28, 30, 32, 33, 35, 37, 39, 41, 43, 45, 47,
49, 52, 54, 57, 60, 62, 65, 69, 72, 75, 79, 84, 88, 94, 100,
108};
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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