mirror of
https://gitee.com/dlmu-cone/tronone-h7-scaffold
synced 2026-07-23 19:25:09 +08:00
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/**
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* @file ws2812.c
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* @brief WS2812 LED driver
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* @author TuxMonkey (nqx2004@gmail.com)
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* @version 1.0
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* @date 2025-07-08
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*
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* @copyright Copyright (c) 2025 DLMU-C.ONE
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*
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* @par 修改日志:
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* <table>
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* <tr><th>Date <th>Version <th>Author <th>Description
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* <tr><td>2025-07-08 <td>1.0 <td>TuxMonkey <td>内容
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* </table>
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*/
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#include "ws2812.h"
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#define WS2812_LowLevel 0xC0 // 0码
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#define WS2812_HighLevel 0xF0 // 1码
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/**
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* @brief
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* @param [in] r My Param doc
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* @param [in] g My Param doc
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* @param [in] b My Param doc
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*/
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void WS2812_Ctrl(uint8_t r, uint8_t g, uint8_t b) {
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uint8_t txbuf[24];
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uint8_t res = 0;
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for (int i = 0; i < 8; i++) {
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txbuf[7 - i] = (((g >> i) & 0x01) ? WS2812_HighLevel : WS2812_LowLevel) >> 1;
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txbuf[15 - i] = (((r >> i) & 0x01) ? WS2812_HighLevel : WS2812_LowLevel) >> 1;
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txbuf[23 - i] = (((b >> i) & 0x01) ? WS2812_HighLevel : WS2812_LowLevel) >> 1;
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}
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HAL_SPI_Transmit(&WS2812_SPI_UNIT, &res, 0, 0xFFFF);
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while (WS2812_SPI_UNIT.State != HAL_SPI_STATE_READY);
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HAL_SPI_Transmit(&WS2812_SPI_UNIT, txbuf, 24, 0xFFFF);
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for (int i = 0; i < 100; i++) {
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HAL_SPI_Transmit(&WS2812_SPI_UNIT, &res, 1, 0xFFFF);
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}
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}
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