void Ws2822s::setAddress(int start_pixel, int end_pixel)
{
if (start_pixel < 0 || end_pixel >= 1024)
return;
if (start_pixel > end_pixel)
return;
*out_adri |= bit_address;
delayMicroseconds(10);
*out_adri &= ~bit_address;
delayMicroseconds(5000);
uint8_t oldSREG = SREG;
cli();
*out_adri |= bit_address;
delayMicroseconds(12);
sendByte(0, out_adri, bit_address);
*out_adri |= bit_address;
for (int i = start_pixel; i <= end_pixel; ++i) {
channel = i * 3 + 1;
channel_rv = channel;
channel_rv = ((channel_rv & 0x55) << 1) | ((channel_rv & 0xAA) >>1);
channel_rv = ((channel_rv & 0x33) << 2) | ((channel_rv & 0xCC) >>2);
channel_rv = ((channel_rv << 4) | (channel_rv >> 4));
sendByte((channel_rv & 0x00FF), out_adri, bit_address);
if (channel >= 0 && channel < 256)
temp = 0x0F;
else if (channel >= 256 && channel < 512)
 temp = 0x87;
else if (channel >= 512 && channel < 768)
temp = 0x4B;
else if (channel >= 768 && channel < 1024)
temp = 0xC3;
else if (channel >= 1024 && channel < 1280)
temp = 0x2D;
else if (channel >= 1280 && channel < 1536)
temp = 0xA5;
else if (channel >= 1536 && channel < 1792)
temp = 0x69;
else if (channel >= 1792 && channel < 2048)
temp = 0xE1;
else if (channel >= 2048 && channel < 2304)
temp = 0x1E;
else if (channel >= 2304 && channel < 2560)
temp = 0x96;
else if (channel >= 2560 && channel < 2816)
temp = 0x5A;
else if (channel >= 2816 && channel < 3072)
temp = 0xD2;
sendByte(temp, out_adri, bit_address);
temp = 0x4B;
sendByte(temp, out_adri, bit_address);
}
SREG = oldSREG;
sei();
}