#include <STC15F2K60S2.H>
#include "intrins.h"
sbit WS2812 = P1^7;
#define numLEDs 8 //灯的个数
unsigned char buf_R[numLEDs] = {0};//颜色缓存
unsigned char buf_G[numLEDs] = {0};
unsigned char buf_B[numLEDs] = {0};
void RGB_Set_Up(); //送0码
void RGB_Set_Down(); //送1码
void HAL_Delay(unsigned int t)
{
unsigned int x,y;
for(x=114;x>0;x--)
for(y=t;y>0;y--);
}
//复位延时
void Delay50us() //@22.1184MHz
{
unsigned char i, j;
_nop_();
_nop_();
i = 2;
j = 15;
do
{
while (--j);
} while (--i);
}
//1码，高电平850ns 低电平400ns 误差正负150ns
void RGB_Set_Up()
{
WS2812 = 1;
//经过逻辑分析仪调试的的延时
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();_nop_();
WS2812 = 0;
}
//1码，高电平400ns 低电平850ns 误差正负150ns
void RGB_Set_Down()
{
WS2812 = 1;
//经过逻辑分析仪调试的的延时
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
WS2812 = 0;
}
//发送24位数据
void Send_2811_24bits(unsigned char G8,unsigned char R8,unsigned char B8)
{
unsigned int n = 0;
//发送G8位
for(n=0;n<8;n++)
{
G8<<=n;
if(G8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
//发送R8位
for(n=0;n<8;n++)
{
R8<<=n;
if(R8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
//发送B8位
for(n=0;n<8;n++)
{
B8<<=n;
if(B8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
}
//复位码
void RGB_Rst()
{
WS2812 = 0;
Delay50us();
}
//把24位数据GRB码转RGB
void Set_Colour(unsigned char r,unsigned char g,unsigned char b)
{
unsigned char i;
for(i=0;i<numLEDs;i++)
{
buf_R[i] = r; //缓冲
buf_G[i] = g;
buf_B[i] = b;
}
for(i=0;i<numLEDs;i++)
{
Send_2811_24bits(buf_G[i],buf_R[i],buf_B[i]);//发送显示
}
}
//某一个点显示的颜色
void SetPointColour(unsigned int num,unsigned char r,unsigned char g,unsigned char b)
{
unsigned char i;
for(i=0;i<numLEDs;i++)
{
buf_R[num] = r;//缓冲
buf_G[num] = g;
buf_B[num] = b;
}
for(i=0;i<numLEDs;i++)
{
Send_2811_24bits(buf_G[i],buf_R[i],buf_B[i]);//发送显示
}
}
//颜色交换24位不拆分发
void SetPixelColor(unsigned char num,unsigned long c)
{
unsigned char i;
for(i=0;i<numLEDs;i++)
{
buf_R[num] = (unsigned char)(c>>16);
buf_G[num] = (unsigned char)(c>>8);
buf_B[num] = (unsigned char)(c);
}
for(i=0;i<numLEDs;i++)
{
Send_2811_24bits(buf_G[i],buf_R[i],buf_B[i]);
}
}
//复位
void PixelUpdate()
{
RGB_Rst();
}
//颜色
unsigned long Color(unsigned char r, unsigned char g, unsigned char b)
{
return ((unsigned long)r << 16) | ((unsigned long)g << 8) | b;
}
//颜色算法
unsigned long Wheel(unsigned char WheelPos)
{
WheelPos = 255 - WheelPos;
if(WheelPos < 85)
{
return Color(255 - WheelPos * 3, 0, WheelPos * 3);
}
if(WheelPos < 170) {
WheelPos -= 85;
return Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
WheelPos -= 170;
return Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}
//彩虹
void rainbow(unsigned int wait)
{
unsigned int i, j;
for(j=0; j<256; j++)
{
for(i=0; i<numLEDs; i++)
{
SetPixelColor(i, Wheel((i+j) & 255));
}
PixelUpdate();
HAL_Delay(wait);
}
}
//稍微不同的是，这使得彩虹均匀分布
void rainbowCycle(unsigned int wait)
{
unsigned int i, j;
for(j=0;j<256*5;j++)
{ // 5 cycles of all colors on wheel 车轮上所有颜色的5个循环
for(i=0;i<numLEDs;i++)
{
SetPixelColor(i, Wheel(((i * 256 / numLEDs) + j) & 255));
}
PixelUpdate();
HAL_Delay (wait);
}
}
//Theatre-style crawling lights.呼吸灯
void theaterChase(unsigned long c, unsigned int wait)
{
int j,q;
unsigned int i;
for (j=0; j<10; j++)
{ //do 10 cycles of chasing 做10个循环
for (q=0; q < 3; q++)
{
for (i=0; i<numLEDs; i=i+3)
{
SetPixelColor(i+q, c); //turn every third pixel on 把每一个第三个像素
}
PixelUpdate();
HAL_Delay(wait);
for (i=0; i<numLEDs; i=i+3)
{
SetPixelColor(i+q, 0); //turn every third pixel off 把每一个第三个像素关掉
}
PixelUpdate();
}
}
}
//Theatre-style crawling lights with rainbow effect
//带有彩虹效果的戏剧式爬行灯
void theaterChaseRainbow(unsigned int wait)
{
int j,q;
unsigned int i;
for (j=0; j < 256; j++)
{ // cycle all 256 colors in the wheel 在轮子上循环所有256色
for (q=0; q < 3; q++)
{
for (i=0; i < numLEDs; i=i+3)
{
SetPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel off 把每一个第三个像素
}
PixelUpdate();
HAL_Delay(wait);
for (i=0; i < numLEDs; i=i+3)
{
SetPixelColor(i+q, 0); //turn every third pixel off 把每一个第三个像素关掉
}
}
}
}
// Fill the dots one after the other with a color
//用一种颜色填充这些圆点
void colorWipe(unsigned long c, unsigned int wait)
{
unsigned int i=0;
for( i=0; i<numLEDs; i++)
{
SetPixelColor(i, c);
PixelUpdate();
HAL_Delay(wait);
}
}
void main()
{
while(1)
{
rainbow(45);
rainbowCycle(40);
theaterChase(Color(0,0,255),80); // Blue
theaterChase(Color(0,255,0),80); // Blue
theaterChase(Color(255,0,0),80); // Blue
theaterChaseRainbow(40);
colorWipe(255,255);
}
} |
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