#include <STC15F2K60S2.H>
#include "intrins.h"
sbit WS2812 = P1^7;
#define numLEDs 8 //燈的個數
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;
//經過邏輯分析儀調試的的延時
_nop_(); _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;
//經過邏輯分析儀調試的的延時
_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
WS2812 = 0;
}
//發送24位數據
void Send_2811_24bits(unsigned char G8,unsigned char R8,unsigned char B8)
{
unsigned int n = 0;
//發送G8位
for(n=0;n<8;n++)
{
G8<<=n;
if(G8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
//發送R8位
for(n=0;n<8;n++)
{
R8<<=n;
if(R8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
//發送B8位
for(n=0;n<8;n++)
{
B8<<=n;
if(B8&0x80 == 0x80)
{
RGB_Set_Up();
}
else
{
RGB_Set_Down();
}
}
}
//復位碼
void RGB_Rst()
{
WS2812 = 0;
Delay50us();
}
//把24位數據GRB碼轉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_2811_24bits(buf_G[i],buf_R[i],buf_B[i]);//發送顯示
}
}
//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_2811_24bits(buf_G[i],buf_R[i],buf_B[i]);//發送顯示
}
}
//顏色交換24位不拆分發
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]);
}
}
//復位
void PixelUpdate()
{
RGB_Rst();
}
//顏色
unsigned long Color(unsigned char r, unsigned char g, unsigned char b)
{
return ((unsigned long)r << 16) | ((unsigned long)g << 8) | b;
}
//顏色算法
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，這使得彩虹均勻分布
void rainbowCycle(unsigned int wait)
{
unsigned int i, j;
for(j=0;j<256*5;j++)
{ // 5 cycles of all colors on wheel 車輪上所有顏色的5個循環
for(i=0;i<numLEDs;i++)
{
SetPixelColor(i, Wheel(((i * 256 / numLEDs) + j) & 255));
}
PixelUpdate();
HAL_Delay (wait);
}
}
//Theatre-style crawling lights.呼吸燈
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個循環
for (q=0; q < 3; q++)
{
for (i=0; i<numLEDs; i=i+3)
{
SetPixelColor(i+q, c); //turn every third pixel on 把每一個第三個像素
}
PixelUpdate();
HAL_Delay(wait);
for (i=0; i<numLEDs; i=i+3)
{
SetPixelColor(i+q, 0); //turn every third pixel off 把每一個第三個像素關掉
}
PixelUpdate();
}
}
}
//Theatre-style crawling lights with rainbow effect
//帶有彩虹效果的戲劇式爬行燈
void theaterChaseRainbow(unsigned int wait)
{
int j,q;
unsigned int i;
for (j=0; j < 256; j++)
{ // cycle all 256 colors in the wheel 在輪子上循環所有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 把每一個第三個像素
}
PixelUpdate();
HAL_Delay(wait);
for (i=0; i < numLEDs; i=i+3)
{
SetPixelColor(i+q, 0); //turn every third pixel off 把每一個第三個像素關掉
}
}
}
}
// 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)
{
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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