/* * Microwindows keyboard driver for Compaq iPAQ * * Copyright (c) 2000, 2003 Century Software Embedded Technologies * Written by Jordan Crouse */#include <stdio.h>#include <sys/types.h>#include <fcntl.h>#include <unistd.h>#include <errno.h>#include "kbd_types.h"#include "keyboard.h"#define KEYBOARD "/dev/keyboard/0raw"static int fd;typedef struct{	MWKEY mwkey;	int scancode;}KeyMap;static MWKEY scancodes[64];static KeyMap keymap[] = {      {MWKEY_KP0,  0x1d},       {MWKEY_KP1,  0x21},       {MWKEY_KP2,  0x25},       {MWKEY_KP3,  0x23},       {MWKEY_KP4,  0x29},       {MWKEY_KP5,  0x2d},       {MWKEY_KP6,  0x2b},       {MWKEY_KP7,  0x31},       {MWKEY_KP8,  0x35},       {MWKEY_KP9,  0x33},       {MWKEY_NUMLOCK, 	0x11},       {MWKEY_KP_DIVIDE,	0x15},       {MWKEY_KP_MULTIPLY,	0x13},       {MWKEY_KP_MINUS,	0x0b},       {MWKEY_KP_PLUS,		0x34},       {MWKEY_KP_ENTER,	0x24},       {MWKEY_KP_DEL,	0x1b}, };intKBD_Open(void){	int i;	/* Open the keyboard and get it ready for use */	fd = open(KEYBOARD, O_RDONLY | O_NONBLOCK);	if (fd < 0) {		printf("%s - Can't open keyboard!\n", __FUNCTION__);		return -1;	}	for (i=0; i<sizeof(scancodes)/sizeof(scancodes[0]); i++)		scancodes[i]=MWKEY_UNKNOWN;	for (i=0; i< sizeof(keymap)/sizeof(keymap[0]); i++)		scancodes[keymap[i].scancode]=keymap[i].mwkey;	return fd;}voidKBD_Close(void){	close(fd);	fd = -1;}voidKBD_GetModifierInfo(MWKEYMOD * modifiers, MWKEYMOD * curmodifiers){	if (modifiers)		*modifiers = 0;	/* no modifiers available */	if (curmodifiers)		*curmodifiers = 0;}intKBD_Read(char* kbuf, MWKEYMOD * modifiers, MWSCANCODE * scancode){	int keydown = 0;	int cc = 0;	char buf,key;	cc = read(fd, &buf, 1);	if (cc < 0) {		if ((errno != EINTR) && (errno != EAGAIN)		    && (errno != EINVAL)) {			perror("KBD KEY");			return (-1);		} else {			return (0);		}	}	if (cc == 0)		return (0);	/* If the code is big than 127, then we know that */	/* we have a key down.  Figure out what we've got */	*modifiers = 0;	if (buf & 0x80) {		keydown = 1;	/* Key pressed but not released */	} else {		keydown = 2;	/* key released */	}	buf &= (~0x80);	if( buf >= sizeof(scancodes) ) *kbuf = MWKEY_UNKNOWN;	*scancode = scancodes[(int) buf];	*kbuf = *scancode ;//	printf("%c",*kbuf);  	//	printf("by threewater: orgvalue=%x key=%c %x keystatus=%d, scancode=%x\n",buf, *kbuf,*kbuf,keydown, *scancode);	return keydown;	}