iochar.c

老外开发的机器人的底层单片机代码。比较有参考价值哦！

// iochar.c
#include <stdio.h>
#define _SCI
#include <hcs12dp256.h>

int getchar(void)
	{
	while ((SCI0SR1 & RDRF) == 0)
		;
	return SCI0DRL;
	}

int putchar(char c)
	{
	if (c == '\n')
		putchar('\r');
	while ((SCI0SR1 & TDRE) == 0)
		;
	SCI0DRL = c;
	return c;
	}
	
	
//------------------------------------------------------------------