WS2812B灯带STC驱动

1、关于WS2812B我就不多说了，规格说明书讲的很详细。目前网上分享的2812驱动比较少，而且说明不详，使用起来不是很方便，本着共同进步的精神在这里和大家分享一下我的调试经验。MCU：STC12C5A08S2晶振：24M/经验：2812时序要求还是比较严，对传统51来说实现真的有难度，之前网上共享的STC89C52的驱动，即使真的点亮了灯带，估计也达不到我们的控制要求。因为1T的51加上24M的晶振，我在调试时也有点勉强，一次IO的翻转就要300ns。下面是灯带的驱动程序，可直接用：sbit Din = P32;uint8 bdata LED_DAT;/可位操作的数据发送暂存变量声明sbit b

2、it0 = LED_DAT0; /被发送的数据各位定义sbit bit1 = LED_DAT1;sbit bit2 = LED_DAT2;sbit bit3 = LED_DAT3;sbit bit4 = LED_DAT4;sbit bit5 = LED_DAT5;sbit bit6 = LED_DAT6;sbit bit7 = LED_DAT7;/复位码:低电平50usvoid Reset()uint8 i;Din = 0;for(i = 0; i BSRR = 0x00000040)#define LED_OFF (GPIOA-BSRR = 0x00400000)void LED_GPIO_

3、Init() RCC-AHBENR |= 0x00020000 ; /enable the clock of PORTA GPIOA-MODER |= 0x00001000 ; / PA6 out GPIOA-OTYPER &= 0x00000000 ; /pull out GPIOA-OSPEEDR |= 0x00003000 ; / high speed 50MHZ GPIOA-PUPDR |= 0x00002000 ; / PUPD = DOWN GPIOA-BSRR |= 0x00400000 ; / reset PA5 void Send_8bits(uint8_t dat) uin

4、t8_t a; for(a=0;a8;a+) LED_ON; if(dat & 0x80) asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop

5、);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); dat=dat1; LED_OFF; asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); else asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); dat=dat1; LED_OFF; asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop

6、);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); asm(nop);asm(nop);asm(nop);asm(nop);asm(nop);asm(nop); void Send_2811_24bits(uint8_t dat1,uint8_t dat2,uint8_t dat3) Send_8