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#include<stc15.h>
#include"intrins.h"
sbit WS2812 = P1^0;
#define numLEDs 22 //燈的個數(shù)
unsigned char buf_R[numLEDs] = {0};//顏色緩存
unsigned char buf_G[numLEDs] = {0};
unsigned char buf_B[numLEDs] = {0};
void RGB_Set_Up(); //送0碼
void RGB_Set_Down(); //送1碼
void HAL_Delay(unsigned int t)
{
unsigned int x,y;
for(x=114;x>0;x--)
for(y=t;y>0;y--);
}
//復(fù)位延時
void Delay50us() //@22.1184MHz
{
unsigned char i, j;
_nop_();
_nop_();
i = 2;
j = 15;
do
{
while (--j);
} while (--i);
}
//1碼，高電平850ns 低電平400ns 誤差正負150ns
void RGB_Set_Up()
{
WS2812 = 1;
//經(jīng)過邏輯分析儀調(diào)試的的延時
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
WS2812 = 0;
}
//1碼，高電平400ns 低電平850ns 誤差正負150ns
void RGB_Set_Down()
{
WS2812 = 1;
//經(jīng)過邏輯分析儀調(diào)試的的延時
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
WS2812 = 0;
}
//發(fā)送24位數(shù)據(jù)
void Send_2812_24bits(unsigned char G8,unsigned char R8,unsigned char B8)
{
unsigned int n = 0;
//發(fā)送G8位
for(n=0;n<8;n++)
{
G8<<=n;
if(G8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
//發(fā)送R8位
for(n=0;n<8;n++)
{
R8<<=n;
if(R8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
//發(fā)送B8位
for(n=0;n<8;n++)
{
B8<<=n;
if(B8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
}
//復(fù)位碼
void RGB_Rst()
{
WS2812 = 0;
Delay50us();
}
//把24位數(shù)據(jù)GRB碼轉(zhuǎn)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; //緩沖
buf_G[i] = g;
buf_B[i] = b;
}
for(i=0;i<numLEDs;i++)
{
Send_2812_24bits(buf_G[i],buf_R[i],buf_B[i]);//發(fā)送顯示
}
}
//某一個點顯示的顏色
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;//緩沖
buf_G[num] = g;
buf_B[num] = b;
}
for(i=0;i<numLEDs;i++)
{
Send_2812_24bits(buf_G[i],buf_R[i],buf_B[i]);//發(fā)送顯示
}
}
//顏色交換24位不拆分發(fā)
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_2812_24bits(buf_G[i],buf_R[i],buf_B[i]);
}
}
//復(fù)位
void PixelUpdate()
{
RGB_Rst();
}
// Fill the dots one after the other with a color
//用一種顏色填充這些圓點
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)
{
colorWipe(255*32*1024,1000);//紅色
colorWipe(0,1000);
colorWipe(255*16,1000); //綠色
colorWipe(0,1000);
colorWipe(255,1000);//藍色
colorWipe(0,1000);
colorWipe(255*32*1024+255*16,1000);//紅色+綠色
colorWipe(0,1000);
colorWipe(255*32*1024+255,1000);//紅色+藍色
colorWipe(0,1000);
colorWipe(255*16+255,1000); //綠色+藍色
colorWipe(0,1000);
colorWipe(255*32*1024+255*16+255,1000); //紅色+綠色+藍色
colorWipe(0,1000);
colorWipe(255*32*1024,100); //紅色
HAL_Delay(10000);
colorWipe(255*16,100); //綠色
HAL_Delay(10000);
colorWipe(255,100);//藍色
HAL_Delay(10000);
colorWipe(255*32*1024+255*16,100);//紅色+綠色
HAL_Delay(10000);
…………
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