outbound.c

来自「嵌入式系统基础课件」· C语言 代码 · 共 41 行

#include <ctype.h>
#include "libepc.h"
#include "serial.h"
#include "mtc.h"

void OutBound(void)
	{
	WINDOW *w ;

	w = WindowCreate("Local", 0, 11, 0, 79) ;
	if (!w) return ;

	for (;;)
		{
		BYTE8 code ;
		char ascii ;

		MtCYield() ;

		WindowSelect(w) ;

		if (!ScanCodeRdy()) continue ;

		code = GetScanCode() ;
		if (code & 0x80) continue ;
		if (SetsKybdState(code)) continue ;

		ascii = ScanCode2Ascii(code) & 0xFF ;
		if (!isprint(ascii) && !iscntrl(ascii)) continue ;
		WindowPutChar(w, ascii) ;

		SerialPut(ascii) ;
		if (ascii == '\r')
			{
			WindowPutChar(w, '\n') ;
			SerialPut('\n') ;
			}
		}
	}