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发表于 2009-9-1 16:31:15
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#include <stdio.h>
, ^8 n2 q: M: r1 T: r8 u5 g#include <string.h>
) }8 ]) C; a0 s% s' K#include <errno.h>
?5 L+ X; L4 h#include <unistd.h>
" K n) C2 ^0 c% e* ?#include <fcntl.h>
8 Y% O! u3 s9 u! z#include <linux/kd.h>
# o7 C% g6 i. R9 b8 g4 x6 S! Z- [#include <linux/keyboard.h>
5 C' F* V' K; z#include <termios.h>9 L9 P! ?/ L9 o" k% b2 q
9 Q( ^5 s# k' i4 a8 V) `3 G, h( y. u* V1 Q/ @; }
#define KEY_DOWN 0x1002 y6 n }2 d( ^6 ?- U: T
#define KEY_UP 0x000+ u+ {# _4 g; z; P4 V1 m' F, J
3 c5 a `: K J. Wint oldmode;
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0 |* Y/ ], P! Q0 A6 kstruct termios new;
0 g8 N; {" ?* lstruct termios old;
2 O' h: n3 u" q; S5 \
9 h0 l! ]( ] u$ pint get_key_input(void)5 T' {" K8 c: l7 i
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int keyboard;* I6 Y( v+ b, o5 B* O. @9 g: X, ]
int keyboardcode;! p( f5 J9 ~: W, C- l3 u: z- C
0 k- k2 |) K7 o8 Fkeyboard = init_keyboard();( N1 ^: z0 r j6 D g& R3 E, F
do{) d* T+ Z* }! A% Y, c
keyboardcode = poll_keyboard(keyboard); & k8 V% m3 H( X! \) v4 _
if((keyboardcode != 0) && (keyboardcode & KEY_DOWN)){
: N+ L; I3 m9 C& R$ I' v9 |0 V$ |2 wkeyboardcode = keyboardcode & 0xFF;
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}while( keyboard != 0x58); 7 s$ [6 }! K. C6 M7 M; i7 F
exit_keyboard(keyboard);+ U% V: z/ @0 Z9 a0 j
return 0;0 \* B1 q0 L6 I- y
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. f$ |2 X+ a( cint exit_keyboard(int keyboard)
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ioctl(keyboard, KDSKBMODE, oldmode);
( l# @( c' w7 p4 w) c7 _# Q+ etcsetattr( keyboard, 0, &old);, o- T6 `- e( G
close(keyboard);
F, ]/ k3 N7 t$ `7 breturn 0;6 F- z7 n3 r% c3 S
}
! \+ ^, C8 j% {* i* c8 J% hint init_keyboard(void)
* B; v2 _" }& h7 Z6 U{
( h% o5 d4 v3 f7 Nint keyboard;
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keyboard = open("/dev/tty", O_RDONLY);
2 ~4 O: |1 [; q Y7 X, Qioctl(keyboard, KDGKBMODE, &oldmode);
; d( X0 p7 F' _& p2 Otcgetattr( keyboard, &old);
) |( C( M2 S2 ]7 stcgetattr( keyboard, &new);
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new.c_lflag &= ~(ICANON | ECHO | ISIG);
5 L1 M& ~8 |8 O8 Rnew.c_iflag = 0;
) K: C* `5 O Vnew.c_cc[VMIN] = 0;
) i& \! U- s6 d$ E. Tnew.c_cc[VTIME] = 1;
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tcsetattr(keyboard, TCSAFLUSH, &new);4 a/ S4 K4 n% l) ]! r5 U V
ioctl(keyboard, KDSKBMODE, K_RAW);
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* @2 u8 ]0 x6 j! \; ?) W2 d3 `return keyboard;. J2 j! P* _2 L H, m4 X8 H
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4 A# ^' m, O+ ]
int poll_keyboard(int keyboard)
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unsigned char buf[5];0 k) n2 J) {( h
int n;8 F0 n9 L- Q2 R6 V, j' y
5 b- A% F: Z- p7 h! zint kc = 0;& n: J* [# n9 P( @ I C( ], `: X M
int i = 0;
* R. x* \! l6 X1 @8 bint s = 0;9 l3 w0 P# g* N7 \8 m& r( h) d
n = read(keyboard, &buf, sizeof(buf));
) p0 v9 l5 @1 z9 w- N7 [8 b4 r2 G" Awhile( i < n){( r8 a9 j g& Y. x3 m8 X# z
s = (buf & 0x80) ? 0:1;
% Q3 A" j1 P5 c3 ?s = s << 8;
- O7 g. j" {7 x8 i @if((i + 2) < n && (buf & 0x7F) == 0 && ( buf[i+1] & 0x80) != 0 && (buf[i+2] & 0x80) != 0){( G5 f8 J" e# J' N& R- z$ e1 ^
kc = ((buf[i+1] & 0x7F ) << 7 ) |(buf[i+2] & 0x7F);: G' Z- t8 P. Z* G2 ^
i += 3;
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else{ a8 r$ K& |; U$ N5 @/ o# ]" \
kc = buf & 0x7F;, r8 H$ E! V1 L( k% k
i++;4 x' L7 s; S' O2 \
}! Z0 R; g9 k; K- h2 e
}
3 ]; c W2 ~9 r, ]kc = s | kc;, ~* A6 l$ B( ^3 O
return kc;
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