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发表于 2009-9-1 16:31:15
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#include <stdio.h> " j% n$ A9 P$ x4 r8 {
#include <string.h> . a( M+ a3 K+ D+ D) ^
#include <errno.h> - E3 J: `7 L; N
#include <unistd.h>
8 z4 i/ P. o' i- q+ W+ g) q2 S#include <fcntl.h> 7 t* d& S C0 n! o5 y- ^
#include <linux/kd.h>7 O1 }/ g/ }: w8 w
#include <linux/keyboard.h> + b/ b8 m$ Y! `- s8 n$ o* S
#include <termios.h>
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#define KEY_DOWN 0x100
* w) i* s6 a) L#define KEY_UP 0x000& a1 ]6 | f! s% y. P
2 [0 T# i3 Y/ w! z# Iint oldmode;4 N5 B! Z3 ^2 ]2 R# ^* d
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struct termios new;
8 n6 k3 V* {8 \5 K4 [9 S7 E8 k8 nstruct termios old; j: t q c6 P
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int get_key_input(void)
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) n0 Y6 K H# k7 I; i1 j) e1 p6 ~3 l( K6 Uint keyboard;
- l1 Y. F) |; t8 j; Gint keyboardcode;9 W- j( w+ K. X
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keyboard = init_keyboard();
* s$ H9 Q# ^4 W% w' A9 vdo{0 `/ b) s& q0 @2 I/ o5 h9 J
keyboardcode = poll_keyboard(keyboard);
" G) L7 B% b3 |3 N& Dif((keyboardcode != 0) && (keyboardcode & KEY_DOWN)){
8 C4 l) s( P4 a& B) r6 W9 zkeyboardcode = keyboardcode & 0xFF;
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}while( keyboard != 0x58);
" T3 [4 Q4 W3 S, `, u0 Lexit_keyboard(keyboard);
9 [2 x9 o8 k# C. U( Hreturn 0;
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' `2 Z1 Y6 b( k9 zint exit_keyboard(int keyboard)
% O8 B3 f' `/ h' m{
7 C8 r$ f! p1 d2 qioctl(keyboard, KDSKBMODE, oldmode);7 r- n$ U0 b2 Q" y7 G8 z& V
tcsetattr( keyboard, 0, &old);7 X) j" j: G* C+ D
close(keyboard);
' ~( M4 ^( d: ]1 z: o2 V' Sreturn 0;6 W$ [1 _7 e9 p( D1 Q: [+ H6 N) l- j: J
}
) q T& f" v* D1 P% U1 I+ D: [/ pint init_keyboard(void)) U) L5 L# g1 p3 C+ G; u0 n
{
% b8 D& P. k' v; _7 n4 g- Wint keyboard;
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9 x, c; F# g( i3 Tkeyboard = open("/dev/tty", O_RDONLY);9 c% G3 y; E; F2 h, o3 M
ioctl(keyboard, KDGKBMODE, &oldmode);6 }; b+ g, j2 w3 p1 M; _/ Q L
tcgetattr( keyboard, &old);' A) N# L% T' T+ X. t
tcgetattr( keyboard, &new);
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) B0 r, x4 r3 S! Dnew.c_lflag &= ~(ICANON | ECHO | ISIG); 4 c3 J) R8 \8 t
new.c_iflag = 0;
, ~. [, t L0 e* V C* a m; ?* cnew.c_cc[VMIN] = 0;
; Q7 U9 f3 d4 h" Hnew.c_cc[VTIME] = 1;1 S2 s+ ]2 r& u2 E
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tcsetattr(keyboard, TCSAFLUSH, &new);
1 u# y2 L% `5 z7 Xioctl(keyboard, KDSKBMODE, K_RAW);) P# h: B5 P/ g c, x
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return keyboard; D. ^1 T' n2 B
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/ f- s( O0 T" p8 Bint poll_keyboard(int keyboard)
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unsigned char buf[5];
' _5 s1 [* b4 \ V H; O+ }int n;
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int kc = 0;
. B/ m- k t" W5 Iint i = 0;( D8 y9 ?$ c3 c7 t/ w# p( Z
int s = 0;
3 n( ]) f; t6 z; i6 g& W4 p7 i& @! Dn = read(keyboard, &buf, sizeof(buf));
6 p, F; Y% V# j, {while( i < n){ {$ |; e) y& `+ j
s = (buf & 0x80) ? 0:1;
6 K: m" @, q) j- xs = s << 8;
" h& z6 T7 z5 ~* W+ {. cif((i + 2) < n && (buf & 0x7F) == 0 && ( buf[i+1] & 0x80) != 0 && (buf[i+2] & 0x80) != 0){
' ^) C3 x, [' v% ekc = ((buf[i+1] & 0x7F ) << 7 ) |(buf[i+2] & 0x7F);* O! o% d- t! f, Q" S
i += 3;
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else{8 e! Q# z% U$ q2 T8 V
kc = buf & 0x7F;
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}
- _5 Y$ t4 p2 p' n8 B7 i# Ekc = s | kc;& |0 i) K. c c m/ J* g
return kc; 0 V/ B! ~9 t: Q
} |
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发表于 2009-7-24 11:54:29