utils.c

Working with DS1820 temperature sensor on SAM7 mC. Watch for timings!

#include "include/includes.h"

void ITOA(long n, char r[]) {
	int i=0;
	int j=0;
	int c=0;
	int sign = 0;
	char s[10];
	

if ((sign = n) < 0)   /* RECORD SIGN */
 	n = -n;     /* MAKE N POSITIVE */

	i = 0;
do {    /* GENERATE DIGITS IN REVERSE ORDER */
	s[i++] = n % 10 + '0'; /* GET NEXT DIGIT */
}   while ((n /=10) > 0); /* DELETE IT */
if (sign < 0)
	s[i++] = '-';
	s[i] = '\0';
	c = i;

	j=0;
for (i = c-1; i >= 0; i-- ) {
	r[j] = s[i];
	j++; 
}
return;
}

void delay(unsigned long ms) {
		unsigned long	j;
		
		for (j = 2825*ms; j != 0; j-- );		
};

void undelay(unsigned long un) {
		unsigned long	j;
		
		for (j = 2825*un/1000; j != 0; j-- );				
};