炫酷ws2812流水灯好看又简单附单片机源码 -

#include <reg51.h>
#include <intrins.h>
// 使用的IO口，无需初始化
sbit DOUT = P3^3;
#define DELAY_LONG {_nop_();_nop_();_nop_();}
#define DELAY_SHORT {_nop_();_nop_();}
#define SEND_1 {DOUT=1;DELAY_LONG;DOUT=0;DELAY_SHORT;}
#define SEND_0 {DOUT=1;DELAY_SHORT;DOUT=0;DELAY_LONG;}
#define SEND_BIT(x) {if(x) {SEND_1;} else {SEND_0;}}
// WS2812灯带颗粒数
#define PIXEL_CNT (8)
// RGB颗粒结构
typedef struct {
unsigned int next_pixel; // 下一颗粒的index
unsigned char green; // 绿色值
unsigned char red; // 红色值
unsigned char blue; // 蓝色值
unsigned char brightness; // 亮度值
} Pixel;
void send_p(Pixel _p); // 发送1个颗粒的值
void send_pixels(Pixel *_p_list, unsigned int _start, unsigned int _cnt); // 发送所有颗粒的值
// 各颗粒值的初始值
Pixel pixels[PIXEL_CNT] = {
{1, 31, 255, 127, 255},
{2, 31, 255, 127, 127},
{3, 31, 255, 127, 31},
{4, 31, 255, 127, 7},
{5, 31, 255, 127, 1},
{6, 31, 255, 127, 0},
{7, 31, 255, 127, 0},
{0, 31, 255, 127, 0},
};
// 通用计数器
unsigned int cnt = 0;
// 指定毫秒数Delay
void delay_ms(unsigned int x) //@11.0592MHz
{
unsigned char i, j;
do {
_nop_();
_nop_();
_nop_();
i = 11;
j = 190;
do
{
while (--j);
} while (--i);
} while (--x);
}
// 主函数
void main() {
// 初始化段
// 循环处理段
while(1) {
// 等待50ms
delay_ms(50);
cnt %= 0x100;
send_pixels(pixels, cnt % PIXEL_CNT, PIXEL_CNT);
cnt++;
}
}
void Delay50us() //@11.0592MHz
{
unsigned char i, j;
_nop_();
i = 1;
j = 134;
do
{
while (--j);
} while (--i);
}
// RESET信号
void reset() {
DOUT = 0;
Delay50us();
}
void send_p(Pixel _p) {
unsigned char p_v;
p_v = (_p.green * _p.brightness) >> 8;
SEND_BIT(p_v & 0x80);
SEND_BIT(p_v & 0x40);
SEND_BIT(p_v & 0x20);
SEND_BIT(p_v & 0x10);
SEND_BIT(p_v & 0x08);
SEND_BIT(p_v & 0x04);
SEND_BIT(p_v & 0x02);
SEND_BIT(p_v & 0x01);
p_v = (_p.red * _p.brightness) >> 8;
SEND_BIT(p_v & 0x80);
SEND_BIT(p_v & 0x40);
SEND_BIT(p_v & 0x20);
SEND_BIT(p_v & 0x10);
SEND_BIT(p_v & 0x08);
SEND_BIT(p_v & 0x04);
SEND_BIT(p_v & 0x02);
SEND_BIT(p_v & 0x01);
p_v = (_p.blue * _p.brightness) >> 8;
SEND_BIT(p_v & 0x80);
SEND_BIT(p_v & 0x40);
SEND_BIT(p_v & 0x20);
SEND_BIT(p_v & 0x10);
SEND_BIT(p_v & 0x08);
SEND_BIT(p_v & 0x04);
SEND_BIT(p_v & 0x02);
SEND_BIT(p_v & 0x01);
}
void send_pixels(Pixel *_p_list, unsigned int _start, unsigned int _cnt) {
Pixel *_p = &_p_list[_start % _cnt];
reset();
while(_cnt--) {
send_p(*_p);
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