Форум РадиоКот

Код: Выделить всё

#define F_CPU 4000000L
#define baudrate 9600L
#define bauddivider (F_CPU/(16*baudrate)-1)
#define HI(x) ((x)>>8)
#define LO(x) ((x)& 0xFF)
#define time_f (((1./F_CPU)*8)*)
#include <avr/io.h>
#include <util/delay.h>
#include <string.h>
#include <avr/eeprom.h>
#include <avr/interrupt.h>
volatile uint16_t frec=300, OCR_lh=833, frec_r=0;
float math=0;
volatile int i=0, ft=0;
void send (uint16_t A);
void clear (void);
void init (void)
{
	UBRRL = LO(bauddivider);
	UBRRH = HI(bauddivider);
	UCSRA = 0x00;
	UCSRB = 1<<RXEN|1<<TXEN|0<<RXCIE|0<<TXCIE;
	UCSRC = 1<<URSEL|1<<UCSZ0|1<<UCSZ1;
	//////////////////////////////////////////////
	TCCR1B |= 1<<CS11;
	OCR1AH = (OCR_lh>>8);
	OCR1AL = (OCR_lh&0x00ff);
	TIMSK |= 1<<OCIE1A;
	sei();
	///////////////////////////////////////////////
	DDRC=1<<0;
}
void main (void)
{
	init();
	while(1)
	{
	_delay_ms(300);	
	clear();
	send(frec);
	send(OCR1A);
	frec_r=(1./(OCR_lh*2.*(8/4000000)));
	send(frec_r);
	if(PINC&(1<<4))
		frec++;
	if(PINC&1<<5)
		frec--;
	}
}
void send (uint16_t A)
{
	char buff[250]={0};
	itoa(A,buff,10);
	i=0;
	while(buff[i])
	{
		
		while(UCSRA & (1<<UDRE))
		{
			UDR=buff[i];
			i++;
		}
	}
	while(!(UCSRA & (1<<UDRE)));
	UDR=0x0d;

	
}
void clear (void)
{
	for(int k=0;k<16;)
	{
		while(UCSRA & (1<<UDRE))
		{
			UDR=0x08;
			k++;
		}
	}
}
ISR(TIMER1_COMPA_vect)
{
PORTC^=1;
TCNT1H=0x00;
TCNT1L=0x00;
}