view uptools/libcoding/number_decode.c @ 349:b0cb465290f7

uptools/Makefile: atcmd added
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 04 Feb 2018 18:39:39 +0000
parents ea41b6001848
children
line wrap: on
line source

/*
 * This library module implements the decoding of number (address) digits.
 */

#include <sys/types.h>

char gsm_address_digits[16] =
	{'0','1','2','3','4','5','6','7','8','9','*','#','a','b','c','?'};

decode_address_digits(inbuf, outbuf, ndigits)
	u_char *inbuf;
	char *outbuf;
	unsigned ndigits;
{
	u_char *inp = inbuf;
	char *outp = outbuf;
	unsigned n = 0, b;

	while (n < ndigits) {
		b = *inp++;
		*outp++ = gsm_address_digits[b & 0xF];
		n++;
		if (n >= ndigits)
			break;
		*outp++ = gsm_address_digits[b >> 4];
		n++;
	}
	*outp = '\0';
}