kbd_zlg7289.c

44b0/linux环境基本实验源码,包括helloworld,线程,串口,AD,DA,CAN总线,LED,电机,GPS,GPRS,键盘驱动等

/*
 * 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 "kbd_zlg7289.h"

#define UP-NETARM3000 1
/*#define UP-NETARM300-S 1 */

#define KEYBOARD "/dev/keyboard/0raw"



#ifdef UP-NETARM3000
char keys[] = {//-->0x0a--0x19,0x28
	'7', //0
	'4', //1
	'1', //2
	MWKEY_UNKNOWN,
	MWKEY_C_NUMLOCK, //4
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	'8', //8
	'5', //9
	'2', //0xa
	'0', //0xb
	'/', //0xc
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	'9',//0x10
	'6',//0x11
	'3',//0x12
    '.',//0x13
    MWKEY_C_MULTIPLY,  //0x14
    MWKEY_C_MINUS,     //0x15
    MWKEY_UNKNOWN, //0x16
    MWKEY_UNKNOWN, //0x17
    MWKEY_C_PLUS,  //0x18
    MWKEY_UNKNOWN, //0x19
    MWKEY_C_ENTER, //0x1a
    MWKEY_UNKNOWN, //0x1b
    MWKEY_UNKNOWN  //0x1c
};
/* From the kernel - this maps a single index into */
/* the correct scancode */
static MWKEY scancodes[] = {
      MWKEY_KP7,  //0
      MWKEY_KP4,  //1
      MWKEY_KP1,  //2
      MWKEY_UNKNOWN, //3
      MWKEY_KP_NUMLOCK,  //4
      MWKEY_UNKNOWN, //5
      MWKEY_UNKNOWN, //6
      MWKEY_UNKNOWN, //7
      MWKEY_KP8,  //8
      MWKEY_KP5,  //9
      MWKEY_KP2,  //0xa
      MWKEY_KP0,  //0xb
      MWKEY_KP_DIVIDE,  //0xc
      MWKEY_UNKNOWN, //0xd
      MWKEY_UNKNOWN, //0xe
      MWKEY_UNKNOWN, //0xf      
      MWKEY_KP9,  //0x10
      MWKEY_KP6,  //0x11
      MWKEY_KP3,  //0x12
      MWKEY_UNKNOWN,    //0x13
      MWKEY_KP_MULTIPLY,  //0x14
      MWKEY_KP_MINUS,     //0x15
      MWKEY_UNKNOWN, //0x16
      MWKEY_UNKNOWN, //0x17
      MWKEY_KP_PLUS,  //0x18
      MWKEY_UNKNOWN, //0x19
      MWKEY_KP_ENTER, //0x1a
      MWKEY_UNKNOWN, //0x1b
      MWKEY_UNKNOWN, //0x1c
};
#else
#ifdef UP-NETARM300-S
char keys[] = {//-->0x0a--0x19,0x28
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	'*',
	'7',
	'4',
	'1', //0x6
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	'0',
	'8',
	'5',
	'2', //0xe
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	MWKEY_UNKNOWN,
	13, //enter
	'9', //
	'6',
	'3', //0x16
    MWKEY_UNKNOWN, //0x17
    MWKEY_UNKNOWN, //0x18
    MWKEY_UNKNOWN, //0x19
    MWKEY_UNKNOWN, //0x20
};
/* From the kernel - this maps a single index into */
/* the correct scancode */

static MWKEY scancodes[] = {
      MWKEY_KP7,  //0
      MWKEY_KP4,  //1
      MWKEY_KP1,  //2
      MWKEY_KP_MULTIPLY, //3
      MWKEY_KP7,  //4
      MWKEY_KP4, //5
      MWKEY_KP1, //6
      MWKEY_UNKNOWN, //7
      MWKEY_KP8,  //8
      MWKEY_KP5,  //9
      MWKEY_KP2,  //0xa
      MWKEY_KP0,  //0xb
      MWKEY_KP8,  //0xc
      MWKEY_KP5, //0xd
      MWKEY_KP2, //0xe
      MWKEY_UNKNOWN, //0xf      
      MWKEY_KP9,  //0x10
      MWKEY_KP6,  //0x11
      MWKEY_KP3,  //0x12
      MWKEY_KP_ENTER,    //0x13 #
      MWKEY_KP9,  //0x14
      MWKEY_KP6,     //0x15
      MWKEY_KP3, //0x16
      MWKEY_UNKNOWN, //0x17
      MWKEY_KP_PLUS,  //0x18
      MWKEY_UNKNOWN, //0x19
      MWKEY_KP_ENTER, //0x1a
      MWKEY_UNKNOWN, //0x1b
      MWKEY_UNKNOWN, //0x1c
};
#endif
#endif


static int fd;

int
KBD_Open(void)
{
	/* 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;
	}

	return fd;
}

void
KBD_Close(void)
{
	close(fd);
	fd = -1;
}

void
KBD_GetModifierInfo(MWKEYMOD * modifiers, MWKEYMOD * curmodifiers)
{
	if (modifiers)
		*modifiers = 0;	/* no modifiers available */
	if (curmodifiers)
		*curmodifiers = 0;
}


int
KBD_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 = keys[buf];
//	printf("%c",*kbuf);  	
//	printf("by threewater: orgvalue=%x key=%c %x keystatus=%d, scancode=%x\n",buf, *kbuf,*kbuf,keydown, *scancode);
	return keydown;
	
}