PIC zaciatocnik

[Rosko, Peter]

zdravim zase,

tak som vylucil chybny chip, dnes som kupil novy PIC16f877a a robi to
iste

na osciloskope a na RA0 vidim 1 dlhu ako ma byt, takze cely procesor
bezi na tych 14MHz, potom sa to cele opakuje s periodou 20msec

kod je dolu, wdt sa resetuje este predtym ako sa povoli prerusenie... 

#include <htc.h>
#include <stdio.h>
#include <string.h>

#include "usart.h"
#include "onewire.h"
#include "test.h"

__CONFIG(HS & WDTEN & PWRTDIS & BORDIS & UNPROTECT);

#define _XTAL_FREQ 14745600

volatile unsigned char tim1111us;
unsigned char tim10ms, tim100ms;

volatile unsigned int fff;

void timer_init(void);

void main(void)
{
 	CLRWDT();
TRISA0 = 0;
RA0 = 0;
//__delay_ms(1);
RA0 = 1;
RA0 = 0;
//__delay_ms(1);

 	CLRWDT();

while (1) CLRWDT();

	timer_init();
//	oneWireInit();
//	init_comms();
//	test_init();
	
//	printf("Welcome\r");
	
	ei();
	while(1)
	{
		CLRWDT();

//		ow_task();
//		usart_rx_task();
//		test_task();

		if (tim100ms >= 10)
		{
			test_task_param |= TEST_LED_TOGGLE;
			tim100ms = 0;
		}

		if (tim10ms >= 10)
		{
			ow_task_param |= OW_RUN;
			tim100ms++;
			tim10ms = 0;
		}

		di();
		if (tim1111us >=9 )
		{
			tim10ms++;
			tim1111us = 0;
		}
		ei();
	}
}

void interrupt isr(void)
{
	if (TMR1IE && TMR1IF) 
	{
		TMR1IF=0;
	}
	if (TMR0IE && TMR0IF)
	{
		tim1111us++;
		TMR0IF = 0;
	}
	if (RCIE && RCIF)
	{
		char received_char;

		received_char = RCREG;	
		usart_rx_buff[usart_rx_buff_cntr++ & USART_RX_BUFF_MASK]
= received_char;
		if (received_char == 0x0D) //'CR' - Enter
		{
			usart_rx_task_param |= CHECK_RX_BUFF;
        	usart_rx_buff[usart_rx_buff_cntr] = 0; //ends string
        	usart_rx_buff_cntr = 0;
    	}
//		RCIF = 0;		
	}

}
//timer1
void timer_init(void)
{
TMR1CS = 0;
TMR1ON = 1;
T1OSCEN = 1;

TMR1IE = 1; 

PEIE = 1;

TMR0IE = 1;
T0CS = 0;
PSA = 0;
PS0 = 1;
PS1 = 1;
PS2 = 0;
}