marvell/services/ct_esim/src/LPAdutil.c

/************************************************************************

            (c) Copyright 2021 by 天翼物联科技有限公司. All rights reserved.

**************************************************************************/
#include <stdio.h>
#include <stdint.h>
#include <string.h>

#include "LPAdutil.h"


uint8_t hex2byte(uint8_t *hexstr)
{
	uint8_t n1,n2;
	
	if( hexstr == NULL || hexstr[0] == 0 || hexstr[1] == 0)
		return -1;
	
	n1 = (hexstr[0] <= '9' && hexstr[0] >= '0')? hexstr[0]-'0':hexstr[0]+10-'A';
	n2 = (hexstr[1] <= '9' && hexstr[1] >= '0')? hexstr[1]-'0':hexstr[1]+10-'A';
	
	return ((n1<<4)&0xf0) | (n2&0x0f);
}

int byte2hex(char *hexstr, char byte)
{
	char n1,n2;
	
	if( hexstr == NULL )
		return -1;

	n1 = (byte&0xf0)>>4;
	n2 = byte&0X0F;
	
	*hexstr = (n1 <= 9) ? n1 + '0' : n1 - 10 + 'A';
	hexstr++;
	*hexstr = (n2 <= 9) ? n2 + '0' : n2 - 10 + 'A';

	return 0;
}

uint8_t byte2hexH(char byte)
{
	char n;

	n = (byte&0xf0)>>4;
	return (n <= 9) ? n + '0' : n - 10 + 'A';
}

uint8_t byte2hexL(char byte)
{
	char n;

	n = byte&0X0F;
	return (n <= 9) ? n + '0' : n - 10 + 'A';
}