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docs: 规划手环级联双 RGB 灯珠硬件 SPI 级联传输驱动与消噪保护时序

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zouhaitao
2026-07-09 14:48:24 +08:00
parent e052aca2ed
commit cf25a89c0f
2 changed files with 16 additions and 4 deletions
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13
Docs/60_coding/mod-led.md
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@@ -55,7 +55,18 @@ void WS2812_Write24Bit(u8 g, u8 r, u8 b) {
SPDAT = b0; // 发送数据
SPCTL = 0xD0; // 开启 SPI 硬件传输
// 展开的非阻塞高速发送时序 (300ns 传输间隔)
// 展开的非阻塞高速发送时序 - 发送第 1 个灯珠 (Top LED)
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b1;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b2;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b3;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b4;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b5;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b6;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b7;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b8;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b9;
// 展开的非阻塞高速发送时序 - 发送第 2 个灯珠 (Bottom LED, 级联相同颜色)
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b1;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b2;
while (!(SPSTAT & 0x80)); SPSTAT = 0xC0; SPDAT = b3;