Subversion Repositories svnkaklik

//----------------------------------------------------------------------------------
//      Prevodnik RS232 <--> RS485 s prodlevou pri prevodu smerem do RS485
//      pri startbitu na RS232 zapne okamzite vysilac pokud nejsou detekovana data z RS485. pak ceka definovanou dobu, nez opet prepne kanal na prijem.
//----------------------------------------------------------------------------------

#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdlib.h>
#include <ctype.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>


#define F_CPU 3686400UL
#include <util/delay.h>

void delay_ms(unsigned int ms)
{
  while(ms)
  {
    _delay_ms(0.96);
        ms--;
  }
}


// ------------------------------------------------------------------
//      Main
// ------------------------------------------------------------------
int main(void)
{

  DDRD |= (1<<DDD5);
  DDRB |= (1<<DDB3);

  TCCR1B |= ((1 << CS10) | (1 << CS11));  // Set up timer 

  PORTB |= (1<<PB3);

  while(1)
  {
        if(!(PIND & (1<<PD1)))
        { 
          TCNT1 = 0;
          PORTD &= ~(1<<PD5);
    }

    if ((TCNT1 >= 1000) && ((PIND & (1<<PD1)))) 
    {  
          PORTD |= (1<<PD5);
          TCNT1 = 0;
    }
  }
  return( 0 );
}