#include <Arduino.h>
#define BARPORT 0x00

class LEDBAR
{
private:
 unsigned int Clk; 
 unsigned int Data; 
 bool PORT; 
 unsigned char state[10];

 void SEND(unsigned int da); 
 void LATCH(void); 
 void SET(unsigned char bits[]);

public:
 LEDBAR(unsigned char PINClk, unsigned char PINData, bool PT); 
 void Mode(){
 pinMode(Clk, OUTPUT); 
 pinMode(Data, OUTPUT);
 }
 void FLOOR(float level); 
 void Toggle(unsigned char led); 
 void OUT(unsigned int bits); 
 unsigned int const Getbits();
};

LEDBAR::LEDBAR(unsigned char PINClk, unsigned char PINData, bool PT)
{
 Clk = PINClk;
 Data = PINData;
 PORT = PT;

 for (byte i = 0; i < 10; i++)
 state[i] = 0x00; 

 pinMode(Clk, OUTPUT);
 pinMode(Data, OUTPUT);
}

void LEDBAR::LATCH()
{
 digitalWrite(Data, LOW);
 delayMicroseconds(10);

 for (unsigned char i = 0; i < 4; i++)
 {
 digitalWrite(Data, HIGH);
 digitalWrite(Data, LOW);
 }
}

void LEDBAR::SEND(unsigned int da)
{
 for (unsigned char i = 0; i < 16; i++)
 {
 unsigned int state = (da & 0x8000) ? HIGH : LOW;
 digitalWrite(Data, state);

 state = digitalRead(Clk) ? LOW : HIGH;
 digitalWrite(Clk, state);

 da <<= 1;
 }
}

void LEDBAR::FLOOR(float level)
{
 level = max(0, min(10, level));
 level *= 8; // there are 8 (noticable) levels of brightness on each segment
 
 // Place number of 'level' of 1-bits on state
 for (byte i = 0; i < 10; i++) {
 state[i] = (level > 8) ? ~0 :
 (level > 0) ? ~(~0 << byte(level)) : 0;
 
 level -= 8;
 };

 SET(state);
}

void LEDBAR::Toggle(unsigned char led)
{
 led = max(1, min(10, led));

 // Zero based index 0-9 for bitwise operations
 led--;

 state[led] = state[led] ? 0 : ~0;

 SET(state);
}

void LEDBAR::SET(unsigned char state[])
{

 SEND(BARPORT);

 for (unsigned char i = 0; i < 10; i++)
 {
 if (PORT)
 {
 // Go backward on state
 SEND(state[10-i-1]);
 }
 else
 {
 // Go forward on state
 SEND(state[i]);
 }
 }
 SEND(0x00);
 SEND(0x00);

 LATCH();
}

void LEDBAR::OUT(unsigned int bits)
{

 for (unsigned char i = 0; i < 10; i++)
 {

 if ((bits % 2) == 1)
 state[i] = 0xFF;
 else
 state[i] = 0x00;
 bits /= 2;
 }

 SET(state);
}

unsigned int const LEDBAR::Getbits()
{
 unsigned int __bits = 0x00;
 for (unsigned char i = 0; i < 10; i++)
 {
 if (state[i] != 0x0)
 __bits |= (0x1 << i);
 }
 return __bits;
}
LEDBAR bar(9,10,0); 

void setup()
{
 // nothing to initialize
 bar.Mode();
}

void loop()
{

 bar.OUT(0b000001111111111);
 delay(1000);

 bar.OUT(0b000000000000000);
 delay(1000);

 bar.OUT(0b000000000000001);
 delay(1000);

 bar.OUT(0b000000000000101);
 delay(1000);

 bar.OUT(0b000000000010101);
 delay(1000);

 bar.OUT(0b000000001010101);
 delay(1000);

 bar.OUT(0b000000101010101);
 delay(1000);

 bar.OUT(0b000001010101010);
 delay(1000);

 bar.OUT(0b000000101010101);
 delay(1000);

 bar.OUT(0b000001010101010);
 delay(1000);

 bar.OUT(0b000000101010101);
 delay(1000);
 
 bar.OUT(0b000000000011111);
 delay(1000);

 bar.OUT(0b000001111100000);
 delay(1000);

}