iofn.c

来自「ARM7TDMI软件模拟器」· C语言 代码 · 共 49 行

/*
**ucosII for simuCPU,you can only free use it for personal study purpose!
**www.MShowTec.com for more information.
**lmjx,Email:[e-mail],All Right Reserved.
**/

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

#define isHex(c)	(((c)>='0'&&(c<='9'))||(((c)>='a')&&((c)<='f'))||(((c)>='A')&&(c)<='F'))

extern int out(char*buf);
extern int in(char*p);

int output(char* buf)
{
	
	return out(buf);
}

int input(char* buf)
{	
	return in(buf);
}

unsigned char c2u(char c)
{
	if(c>='0'&&c<='9')
		return c-'0';
	else if(c>='a'&&c<='f')
		return c-'a'+10;
	else if(c>='A'&&c<='F')
		return c-'F'+10;
	else return 0;
}

unsigned int str2hex(char *str)
{
	int  i= 0;
	unsigned int ret = 0;
	while(str[i]){
		if(isHex(str[i])){
			ret = ret*16+c2u(str[i]);
			i++;
		}else 
			return 0;
	}
	return ret;
}