kbdtest.c

一个通讯程序源码

/*+-----------------------------------------------------------------------
	kbdtest.c -- hack to test keyboard function key sequences
    [e-mail]

  compile with     cc -o kbdtest kbdtest.c
  or just          cc kbdtest.c;a.out
------------------------------------------------------------------------*/
/*+:EDITS:*/
/*:09-10-1992-13:59-wht@n4hgf-ECU release 3.20 */
/*:08-22-1992-15:39-wht@n4hgf-ECU release 3.20 BETA */
/*:07-25-1991-12:58-wht@n4hgf-ECU release 3.10 */
/*:12-21-1990-23:47-wht@n4hgf-liven up for release with ECU 3 */
/*:04-07-1990-01:36-wht@tridom-bring out of the daaaaark ages a bit */
/*:04-18-1988-13:44-wht-first edits -- oollldd program */

#include <stdio.h>
#include <signal.h>
#include <ctype.h>
#include <fcntl.h>
#include <termio.h>
#include "ecu_types.h"
#include <sys/errno.h>
#include "ecu_stat.h"
#include <string.h>

#define TTYIN   0
#define TTYOUT  1
#define TTYERR  2

struct termio tv0;		/* for saving, changing TTY atributes */
struct termio tv;		/* for saving, changing TTY atributes */

/*+-----------------------------------------------------------------------
	ttymode(arg) -- control user console (kbd/screen)

  Where arg ==
	0 restore attributes saved at start of execution
	1 raw mode 

------------------------------------------------------------------------*/
void ttymode(arg)
{
	char *mode_type;

	switch(arg)
	{
		case 0:	
			mode_type = "console to cooked mode\r\n";
			break;
		default: 
			mode_type = "console to raw mode\r\n";
			break;
	}
	(void)fprintf(stderr,mode_type);

	if(arg)
	{
		(void)ioctl(TTYIN,TCGETA,&tv);
		Ltermio.c_cflag &= ~(CS8 | PARENB | PARODD);
		Ltermio.c_cflag |= CS8;
		tv.c_iflag &= ~(INLCR | ICRNL | IGNCR | IXOFF | IUCLC | ISTRIP);
		tv.c_oflag |= OPOST;
		tv.c_oflag &= ~(OLCUC | ONLCR | OCRNL | ONOCR | ONLRET);
		tv.c_lflag &= ~(ICANON | ISIG | ECHO);
		tv.c_cc[VEOF] = '\01';
		tv.c_cc[VEOL] = '\0';
		tv.c_cc[VMIN] = 1;
		tv.c_cc[VTIME] = 1;
		(void)ioctl(TTYIN,TCSETAW,&tv);
	}
	else
		(void)ioctl(TTYIN,TCSETAW,&tv0);
}


/*+-----------------------------------------------------------------------
	main()
------------------------------------------------------------------------*/
main(argc,argv)
int argc;
char **argv;
{
unsigned char inchar;

	setbuf(stdout,NULL);
	setbuf(stderr,NULL);

	ioctl(TTYIN,TCGETA,&tv0);		/* get original status */
	ttymode(2);

	fprintf(stderr,"press ^D (0x04) to terminate program\r\n");

	while(read(TTYIN,&inchar,1) == 1)
	{
		printf("%02x %c\r\n",inchar,
		    ((inchar >= 0x20) && (inchar < 0x7F)) ? inchar : '.');
		if((inchar & 0x7F) == 4)
		{
			ttymode(0);
			exit(0);
		}
	}
	ttymode(0);
	exit(1);

}

/* vi: set tabstop=4 shiftwidth=4: */
/* end of kbdtest.c */