/* Change the following defines to fit your individual application */ 

#define SER_DDR  		DDRB		// Data in
#define SER_PORT 		PORTB
#define SER_NR 		PB0

#define CLK_DDR		DDRA		// Data Clock
#define CLK_PORT		PORTA
#define CLK_NR		PA4

#define LE_DDR		DDRA		// Latch Enable
#define LE_PORT		PORTA
#define LE_NR		PA3


/*###################################################################
*	
*	When implementing just adjust the defines above.
*
*	Don't change anything in the code below! 
*	
*
*###################################################################*/

#include <avr/pgmspace.h>
#include <util/delay.h>
#ifndef F_CPU
// #warning "F_CPU war noch nicht definiert, wird nun nachgeholt mit 1MHz"
#define F_CPU 1000000UL    // Systemtakt in Hz - Definition als unsigned long 
#endif


#define true 		1
#define false 		0

#define ser_high()		SER_PORT |= (1<<SER_NR)
#define ser_low()		SER_PORT &= ~(1<<SER_NR)
#define clk_high()		CLK_PORT |=  (1<<CLK_NR)
#define clk_low()		CLK_PORT &= ~(1<<CLK_NR)
#define le_high()		LE_PORT |= (1<<LE_NR)
#define le_low()		LE_PORT &= ~(1<<LE_NR)

/* Adjust segmentcontrol if you are using different hardware setup. */
uint8_t segmentcontrol[]  PROGMEM = { 	0b00111111, 	// Value 0
					0b00001001,		// Value 1...
					0b01011110,		// Value 2
					0b01011011,		// Value 3
					0b01101001,		// Value 4
					0b01110011,		// Value 5
					0b01110111,		// Value 6
					0b00011001,		// Value 7
					0b01111111,		// Value 8
					0b01111011,		// Value 9
					0b01111101,		// Value A
					0b01100111,		// Value B
					0b00110110,		// Value C	
					0b01001111,		// Value D
					0b01110110,		// Value E
					0b01110100		// Value F
				}; 	// code to display the value

// function prototypes
void debug(uint8_t tmp);
void writesegment(uint16_t sevensegment);
void initdebug();



void initdebug()			// Enable the output ports
{
SER_DDR |= (1<<SER_NR);
CLK_DDR |= (1<<CLK_NR);
LE_DDR |= (1<<LE_NR);
}


void writesegment(uint16_t sevensegment)
{
uint8_t i;

for(i=0; i<16; i++)
	{
		ser_low();						// Serial input (of 74HC595) low
      	if( sevensegment & 0x1 ) ser_high();	// If first bit is set, switch serial input high
      	clk_high();						// trigger clock to shift if in.
		_delay_us(10);					// Wait a bit	
      	clk_low();						// switch clock low again
      	sevensegment >>= 1;				// shift value of sevensegment one to the left.
	}
		le_high();					// All data is in the shiftregister, now latch it to put it to the output
		_delay_us(10);				// Wait a bit
		le_low();					// And lower the bit again.

}

void debug(uint8_t tmp)
{

writesegment(( pgm_read_byte(segmentcontrol + (tmp/16)) )*256 + pgm_read_byte(segmentcontrol + (tmp%16)) );

}

void debug16(uint16_t tmp)
{
		debug((uint8_t)tmp/256||0x80);
		_delay_ms(500);
		debug((uint8_t)tmp%256);
		_delay_ms(500);
		debug(0);
}