controlling 74HC595 with atmega32

[aditya.adi2293]

Hi....

I am trying to control an led matrix(5X7) using an 74HC595 latch+shift registers and atmega32.
I checked out several codes on the internet..it was quite easy.

So i tried making up my own code using atmel studio. But the output pins show zero output whatever serial data i send.
(The multimeter showed zero volts with GND as reference)
I tried it on 6 different ic's, all giving same result.

Here is the code:

#include <avr/io.h>
#include <util/delay.h>

//  PORTB used
//  PINB7 = DataSerial
//  PINB6 = REGCLK
//  PINB5 = STORECLK
//  PINB4 = MasterReset'
//  PINB3 = OutoutEnable'


void send_high(void)
{

//I know delay of 1 ms is not needed..but is sufficient for my purpose

  PORTB|=(1<<PINB7);
  _delay_ms(1);
  PORTB|=(1<<PINB6);
  _delay_ms(1);
  PORTB&=~(1<<PINB6);
  _delay_ms(1);
  PORTB&=~(1<<PINB7);   	
  _delay_ms(1);
}
void send_low(void)
{
	
	_delay_ms(1);
	PORTB|=(1<<PINB6);
	_delay_ms(1);
	PORTB&=~(1<<PINB6);
	_delay_ms(1);
	
}
void send_data(uint8_t data)
{
 
   		_delay_ms(1);
	   
	   for(uint8_t var1=0;var1<8;++var1)
	{   data=data<<var1;
		if(  data & 0x80 )
		{ send_high();}	
	           else
	           { send_low();}
	} 
	_delay_ms(1);               //is it needed ?
	PORTB|=(1<<PINB5);
	_delay_ms(1);
         PORTB&=~(1<<PINB5);
	
}

void  main()
{
	
	DDRB=0xFF;
	PORTB=0x00;

	_delay_ms(1);
	PORTB|=(1<<PIND4);
	_delay_ms(1);
	PORTB|=(1<<PIND5);
	_delay_ms(1);
	PORTB&=~(1<<PIND5);
	_delay_ms(1);
	
	send_data(0xFF);

	while(1)
	{

	}
}

- - - Updated - - -

Here is the code with meaning of each assignment

#include <avr/io.h>
#include <util/delay.h>

//  PORTB
//   The pin config :
//
//  PINB7 = serial data
//  PINB6 = shift clk
//  PINB5 = store clk
//  PINB4 = master reset'
//  PINB3 = output enable'


void send_high(void)
{
  PORTB|=(1<<PINB7);  //data pin high
  _delay_ms(1);
  PORTB|=(1<<PINB6);  //shift clk high
  _delay_ms(1);
  PORTB&=~(1<<PINB6);   //shift clk low
  _delay_ms(1);
  PORTB&=~(1<<PINB7);  //data clk low	
  _delay_ms(1);
}
void send_low(void)
{
	
	_delay_ms(1);
	PORTB|=(1<<PINB6);   //shift clk high
	_delay_ms(1);
	PORTB&=~(1<<PINB6);  //shift clk low
	_delay_ms(1);
	
}
void send_data(uint8_t data)
{
 
   	_delay_ms(1);
	   
	   for(uint8_t var1=0;var1<8;++var1)
	{   data=data<<var1;
		if(  data & 0x80 )
		{ send_high();}	
	           else
	             { send_low();}
	} 
	_delay_ms(1);            
	PORTB|=(1<<PINB5);      //store clk high
	_delay_ms(1);
    PORTB&=~(1<<PINB5);   //store clk low
	
}

void  main()
{
	
	DDRB=0xFF;
	PORTB=0x00;   //reset register high

	_delay_ms(1);
	PORTB|=(1<<PIND4);   //reset register low
	_delay_ms(1);
	PORTB|=(1<<PIND5);   //store clk high
	_delay_ms(1);
	PORTB&=~(1<<PIND5);  //store clk low
	_delay_ms(1);
	
	send_data(0xFF);

	while(1)
	{
	
	}
}