how to interface 74hc595 with ATMEGA 16

[kamran ullah]

hi i am a computer engineering student and i want to interface the ic 74hc595 with my microcontroller(ATMEGA16) someone help me by  giving me code or by making correction in my code
for input ( parallel to serial conversion ) used ic 74hc165

 

for input ( serial to parallel conversion ) used ic 74hc595

 

 

 

 

// ***********************************************************

// Project:

// Author:

// Module description:

// ***********************************************************

 

#include <avrio.h>              // Most basic include files

#include <avrinterrupt.h>       // Add the necessary ones

#include <avrsignal.h>          // here

#include<utildelay.h>

 

int IN1,IN2,IN3,IN4,IN5,IN6,IN7,IN8;

int x1,x2,x3,x4,x5,x6,x7,x8;

 

 

 

 

 

 

void my_inputcode(void)

{

 

// to transfer data enable clock

//low to high transition is done

//and clock is disabled

 //DDRD=0x00;

//PORTD.4=0;// CP Clock

//PORTD&=~(1<<PD4);

//PORTD.5=1;// Clear CE Enable 15 cebar

//PORTD|=(1<<PD5); //works on zero so one

//PORTC.7=1;// PL Load  1 PLbar

//PORTC|=(1<<PC7);

//PORTC.7    = 0;// Load Data

_delay_ms(10);

PORTC&=~(1<<PC7);

_delay_ms(10);

// Serial Transfer Mode

PORTC|=(1<<PC7);

_delay_ms(10);

 

/enable clock pulses

//PORTD&=~(1<<PD5);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 1

---

// making low to high

PIND|=(1<<PD4);

//PORTD|=(1<<PD4);

_delay_ms(10);

IN1=(PIND|=(1<<PD6));// Data Pin  01000000

// Data Pin

_delay_ms(10);

 // clock zero

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 2

---

 

PORTD|=(1<<PD4);

_delay_ms(10);

 

IN2=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 3

---

 

PORTD|=(1<<PD4);

_delay_ms(10);

 

IN3=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 4

---

 

PORTD|=(1<<PD4);

_delay_ms(10);

 

IN4=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 5

---

 

PORTD|=(1<<PD4);

_delay_ms(10);

 

IN5=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 6

---

//PORTD.4=1;

PORTD|=(1<<PD4);

_delay_ms(10);

 

IN6=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 7

---

 

PORTD|=(1<<PD4);

_delay_ms(10);

 

IN7=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

Bit 8

---

 

PORTD|=(1<<PD4);

_delay_ms(10);

PIN8=(PIND|=(1<<PD6));

_delay_ms(10);

 

PORTD&=~(1<<PD4);

_delay_ms(10);

 

//

---

end

---

 

 

// sh/ld parallel load

PORTC|=(1<<PC7);

 //NIH clock enable

PORTD|=(1<<PD5);

 

 

}

 

 

 

 

void my_outputcode(void)

{

 

     // output enable active low             OEbar  13

PORTC|=(1<<PC6);

      // Serial In. DS  Serial Data input     DS     14

PORTC&=~(1<<PC3);

       // Serial Shift Register Clock.         SH_CP  11

PORTC&=~(1<<PC2);                       // shift register clock input

 

        // Shift Register Clear.                MRbar  10

                       // master reset active low..

PORTC|=(1<<PC5);

      // Register Clock.

                       // storage register clock input         ST_CP  12

PORTC&=~(1<<PC4);

       // 10 master reset (active low)         MRbar  10

PORTC&=~(1<<PC5);

_delay_us(50);

PORTC|=(1<<PC5);

_delay_us(50);

 

 

//

---

Bit 1

---

 

             // 11 shift register clock input        SH_CP  11

PORTB&=~(1<<PB2);

_delay_us(10);

 

          // 14 serial data input..               DS     14

PORTB|=(1<<PB3);

 

_delay_us(10);

_delay_ms(2);

 

             // 11 shift register clock input        SH_CP  11

PORTB|=(1<<PB2);

_delay_us(10);

 

 

 

//

---

Bit 2

---

 

PORTC&=~(1<<PC2);

_delay_us(10);

PORTC&=~(1<<PC3);

 

_delay_us(10);

 

PORTC|=(1<<PC2);

 

_delay_us(10);

 

//

---

Bit 3

---

 

PORTC&=~(1<<PC2);

_delay_us(10);

 

(PORTC|(1<<PC3));

_delay_us(10);

 

PORTC|=(1<<PC2);

_delay_us(10);

 

//

---

Bit 4

---

PORTC&=~(1<<PC2);

_delay_us(10);

 

PORTC&=~(1<<PC3);

_delay_us(10);

PORTC|=(1<<PC2);

_delay_us(10);

 

 

//

---

Bit 5

---

PORTC&=~(1<<PC2);

_delay_us(10);

PORTC|=(1<<PC3);

_delay_us(10);

 

PORTC|=(1<<PC2);

_delay_us(10);

 

//

---

Bit 6

---

  // First Error Exixst Here

PORTC&=~(1<<PC2);//PORTC.2=0;

_delay_us(10);

PORTC&=~(1<<PC3);//PORTC.3=x6;

_delay_us(10);

PORTC|=(1<<PC2);//PORTC.2=1;

_delay_us(10);

 

//

---

Bit 7

---

PORTC&=~(1<<PC2);

_delay_us(10);

PORTC|=(1<<PC3);

_delay_us(10);

PORTC|=(1<<PC2);

_delay_us(10);

 

//

---

Bit 8

---

PORTC&=~(1<<PC2);

_delay_us(10);

 

PORTC&=~(1<<PC3);

_delay_us(10);

 

PORTC|=(1<<PC2);

_delay_us(10);

 

 

 

// Data Transfer to output.

PORTC|=(1<<PC4);

 

PORTC&=~(1<<PC6);

 

}

 

 

 

 

 

 

// ***********************************************************

// Main program

//

int main(void)

 

 {

DDRD&=~(1<<PD6);

DDRD|(1<<PD5)|(1<<PD4));

 DDRC=0XFF;

 

while(1)

{

  my_inputcode();

           _delay_ms(30);

          // my_outputcode();

}

 

}

 

 

 

its giving me some error and em not able to remove it…

 

[Faroogh]

HI !
If you still interested in 74hc595 please telll me iam working on that using Atmega32A and Atmega8

[Faroogh]

Can u tell me how to create a library of 74hc595

 

[Hari Prasaath K]

Mention the errors your facing, whether during compilation or output error.

[Author]

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