#include <htc.h> //PIC16F690
#define CE RC3
#define _XTAL_FREQ 10000000;
__CONFIG( HS & WDTDIS & PWRTDIS & MCLRDIS &UNPROTECT & BORDIS & IESODIS & FCMDIS);
unsigned char REC=0;
//////////////////////////
void delay10(void){
int i;
for(i=0;i<1666;i++){}
}
void WriteSPI(int x) { 
	CE=1;
	SSPEN=1;
	SSPBUF=(unsigned char) x; 
	while (BF==0) 
 		{;}
	REC=SSPBUF;//hodnoty H_byte,L_byte
	SSPEN=0;
	CE=0;
} 
///////////////INIT SPI PIC16F690
void init_spi(void){
	CKP=0;
	CKE=1;
	SMP=1;
	WCOL=0;
	SSPOV=0;
	SSPM0=0;
	SSPM1=1;
	SSPM2=0;
	SSPM3=0;
	SSPEN=1;
}
///////////////init DS1722
void INIT_DS(void){
	CE=1;
	SSPBUF=0x80;//addr 
	while (BF==0) 
 		{;}
	SSPBUF=0xE1;//nastaveni
	while (BF==0) 
 		{;}
	CE=0;
};
 /////////////////////////////
int main(void){
	unsigned char data;
	ANSEL=0;
	ANSELH=0;	
	TRISA=0b00000000;
	TRISB=0b00011000;
	TRISC=0b00000000;
	PORTA=0;
	PORTB=0;
	PORTC=0;
	CE=0;

	init_spi();
delay10();
	INIT_DS();
delay10();
	while(1){
	WriteSPI(0x00);//nastaveni
	WriteSPI(0x01);//H_byte
	WriteSPI(0x02);//L_byte
	}
}