#include "core.h"
#define uint8_t unsigned char 
#define uint32_t unsigned long

uint8_t Clkpin;
uint8_t Datapin;

void RGBdriver(uint8_t Clk, uint8_t Data)
{
Clkpin = Clk;
Datapin = Data;
pinMode(Datapin, OUTPUT);
pinMode(Clkpin, OUTPUT);
}

void ClkRise(void)
{
digitalWrite(Clkpin, LOW);
delayMicroseconds(1); 
digitalWrite(Clkpin, HIGH);
delayMicroseconds(1); 
}

void Send32Zero(void)
{
unsigned char i;

for (i=0; i<32; i++)
{
digitalWrite(Datapin, LOW);
ClkRise();
}
}

void begin(void)
{
Send32Zero();
}

void end(void)
{
Send32Zero();
}

uint8_t TakeAntiCode(uint8_t dat)
{
uint8_t tmp = 0;

if ((dat & 0x80) == 0)
{
tmp |= 0x02; 
}

if ((dat & 0x40) == 0)
{
tmp |= 0x01; 
}

return tmp;
}

// gray data
void DatSend(uint32_t dx)
{
uint8_t i;

for (i=0; i<32; i++)
{
if ((dx & 0x80000000) != 0)
{
digitalWrite(Datapin, HIGH);
}
else
{
digitalWrite(Datapin, LOW);
} 
dx <<= 1;
ClkRise();
}
}

// Set color
void SetColor(uint8_t Red,uint8_t Green,uint8_t Blue)
{
uint32_t dx = 0;

dx |= (uint32_t)0x03 << 30; // highest two bits 1£¬flag bits
dx |= (uint32_t)TakeAntiCode(Blue) << 28;
dx |= (uint32_t)TakeAntiCode(Green) << 26; 
dx |= (uint32_t)TakeAntiCode(Red) << 24;

dx |= (uint32_t)Blue << 16;
dx |= (uint32_t)Green << 8;
dx |= Red;

DatSend(dx);
}

void setup() 
{ 
RGBdriver(2,3);
}

void loop() 
{ 
unsigned int i;
while(1)
{
for(i = 0;i < 256;i ++)
{
begin(); // begin
SetColor(0,0,i); //Blue. First node data. SetColor(R,G,B)
end();
//delay(1);
}

for(i = 255;i > 0;i --)
{
begin(); // begin
SetColor(0,0,i); //Blue. first node data
end();
//delay(1);
}
}
}