Program Komunikasi Serial

CONTOH PROGRAM MIKROKONTROLLER KOMUNIKASI SERIAL DENGAN 2 ATMEGA 128

Keterangan Push Button :

Ø  PB1 untuk motor gerak CW

Ø  PB2 untuk motor gerak CCW

Ø  PB3 untuk stop

TRANSMITTER DENGAN RECIEVER if

·         TRANSMITTER :

#include <mega128.h>

#include <stdio.h>

#define CW PINA.0

#define CCW  PINA.3

#define STOP PINA.6

#define ON 1

void main(void)

{         

PORTA=0x00;

DDRA=0x00;

// USART0 initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART0 Receiver: Off

// USART0 Transmitter: On

// USART0 Mode: Asynchronous

// USART0 Baud rate: 9600

UCSR0A=0x00;

UCSR0B=0x08;

UCSR0C=0x06;

UBRR0H=0x00;

UBRR0L=0x33;

while (ON)

      {

        if(CW==ON)

        { putchar('1');putchar(13);}

        if(CCW==ON)

        { putchar('2');putchar(13);}

        if(STOP==ON)

        {putchar('3');putchar(13);}

      };

}

·         RECIEVER : 

#include <mega128.h>

#include <stdio.h>

#define CW PORTA.0

#define CCW PORTA.2

#define  ON 1

#define OFF 0

void main(void)

{

PORTA=0x00;

DDRA=0xff;

// USART0 initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART0 Receiver: On

// USART0 Transmitter: Off

// USART0 Mode: Asynchronous

// USART0 Baud rate: 9600

UCSR0A=0x00;

UCSR0B=0x10;

UCSR0C=0x06;

UBRR0H=0x00;

UBRR0L=0x33;

while (ON)

      {

        a=getchar();

        if(a=='1')

        {CW=ON;CCW=OFF;}

        if(a=='2')

        {CW=OFF;CCW=ON; }

        if(a=='3')

        {CW=OFF;CCW=OFF;}

      };

}

TRANSMITTER DENGAN RECIEVER SWITCH CASE

·         TRANSMITTER :

#include <mega128.h>

#include <stdio.h>

#define CW PINA.0

#define CCW  PINA.3

#define STOP PINA.6

#define ON 1

void main(void)

{         

PORTA=0x00;

DDRA=0x00;

// USART0 initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART0 Receiver: Off

// USART0 Transmitter: On

// USART0 Mode: Asynchronous

// USART0 Baud rate: 9600

UCSR0A=0x00;

UCSR0B=0x08;

UCSR0C=0x06;

UBRR0H=0x00;

UBRR0L=0x33;

while (ON)

      {

        if(CW==ON)

        { putchar('1');putchar(13);}

        if(CCW==ON)

        { putchar('2');putchar(13);}

        if(STOP==ON)

        {putchar('3');putchar(13);}

      };

}

·         RECIEVER : 

#include <mega128.h>

#include <stdio.h>

#define CW PORTA.0

#define CCW PORTA.2

#define  ON 1

#define OFF 0

void main(void)

{

int a;

PORTA=0x00;

DDRA=0xff;

// USART0 initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART0 Receiver: On

// USART0 Transmitter: Off

// USART0 Mode: Asynchronous

// USART0 Baud Rate: 9600

UCSR0A=0x00;

UCSR0B=0x10;

UCSR0C=0x06;

UBRR0H=0x00;

UBRR0L=0x33;

while (ON)

      {

        a=getchar();

        switch(a)

             {

            case'1':CW=ON;CCW=OFF;break;

             case'2':CW=OFF;CCW=ON;break;

             case'3':CW=OFF;CCW=OFF;break;

} 

      };

}