| 0,0 → 1,55 |
|---|
| //---------------------------------------------------------------------------------- |
| // 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 ); |
| } |