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发表于 2009-9-1 16:31:15
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#include <stdio.h> & V1 e4 l# T P8 l6 @: ^
#include <string.h>
4 q4 {3 d+ c- k#include <errno.h> " L- m$ g4 Q, K: X$ U" W
#include <unistd.h> & X1 Y; P3 L4 A
#include <fcntl.h> " g$ p% C& ~5 F
#include <linux/kd.h>/ ^- m5 `6 r4 f. Q; {* s
#include <linux/keyboard.h> P/ x- Z4 f( b; b/ g1 {) c
#include <termios.h>
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/ v5 l& t# l! k! s# }#define KEY_DOWN 0x100
3 C5 G9 U7 w: N" {! c#define KEY_UP 0x0002 {6 t* ?3 M8 Q9 j! M/ i+ R
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int oldmode;( K3 C5 w4 G" l& c
; z8 V L2 r* \; i; vstruct termios new;
% r0 [- J% ]% E) d& n' \9 _8 A S: Cstruct termios old;# g3 s" M V n/ @! P
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int get_key_input(void)
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4 @+ k( ]7 w( C$ E3 `& c) _' zint keyboard;
' _4 b# ^: F+ \8 V4 z4 @9 }int keyboardcode;
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keyboard = init_keyboard();
/ C1 L# ?- U) `! A% Z Ddo{
' c% h2 u! Z7 x7 }keyboardcode = poll_keyboard(keyboard);
* e9 q* M( O5 f& o" v, gif((keyboardcode != 0) && (keyboardcode & KEY_DOWN)){
" [' u g3 z2 Tkeyboardcode = keyboardcode & 0xFF;
. N6 {: N) d- f- i. c) f//
1 Z7 m+ w/ l; @' s}
$ P/ `; S# t, x1 i}while( keyboard != 0x58);
; `4 L& y& H4 c cexit_keyboard(keyboard);
6 L9 E4 Z5 C) `! ^0 V/ M5 v8 E. ?return 0;
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int exit_keyboard(int keyboard)
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% l8 f( Q" m; A- F0 e) @( ?) fioctl(keyboard, KDSKBMODE, oldmode);
1 L. A8 J% o6 ]) B' B# F# a- dtcsetattr( keyboard, 0, &old);8 I* @- `$ i% h/ a4 |' u5 w
close(keyboard);
1 c( i* d9 ]! Z6 A; a) @return 0;. x/ y% Y1 \' w3 Y* E7 `" }: u
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int init_keyboard(void)3 }" N/ x0 j0 X9 u( z+ G
{
. h7 B" m* `7 {$ V3 i+ Q. U" gint keyboard;# \( b; Q7 k* D$ n9 @
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keyboard = open("/dev/tty", O_RDONLY);
/ C6 T. k# U; g0 Cioctl(keyboard, KDGKBMODE, &oldmode);
% `' ^& z- T1 htcgetattr( keyboard, &old);9 q4 G8 W: M. u$ O* @7 \
tcgetattr( keyboard, &new);# R' i+ [1 w0 B1 \5 E2 X4 `
2 }9 \* N2 t( `! _" I2 W# unew.c_lflag &= ~(ICANON | ECHO | ISIG); % m k& Y# { e9 r
new.c_iflag = 0;
A8 @! y+ a$ M$ _new.c_cc[VMIN] = 0;
6 ?/ ? L7 w5 A* ~. Vnew.c_cc[VTIME] = 1;8 j6 w6 u, ^+ F4 c$ I
" N( K3 ~! ~) V) \# F- Ytcsetattr(keyboard, TCSAFLUSH, &new);& J7 f6 s- J4 \$ @
ioctl(keyboard, KDSKBMODE, K_RAW);
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" B Y3 L3 n M( T! c$ }; Ireturn keyboard;
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5 E6 g0 W& q( { aint poll_keyboard(int keyboard) ) l9 I. M' y8 m( D3 G$ d: g: S
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unsigned char buf[5];& l' o" Z( \% V1 W0 E/ j, L% N
int n;
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! D) Y+ S6 ^9 Rint kc = 0;
5 r! z/ w" E" {% c/ _& m5 K4 ]int i = 0;
, o% b' o5 s7 o" l2 C5 e# @8 hint s = 0;
8 J/ S9 ~6 U, Z! g K4 En = read(keyboard, &buf, sizeof(buf)); & R$ @& i/ M( M; Z, c
while( i < n){ @8 r- |! t% h8 I, e/ l$ s& w
s = (buf & 0x80) ? 0:1; V( r5 S6 Z7 r% X! ~
s = s << 8;
* `+ c6 B: O: I6 D6 _8 `if((i + 2) < n && (buf & 0x7F) == 0 && ( buf[i+1] & 0x80) != 0 && (buf[i+2] & 0x80) != 0){
0 V) v1 K/ m0 V: s! o% _kc = ((buf[i+1] & 0x7F ) << 7 ) |(buf[i+2] & 0x7F);
5 H! y5 j9 _; X" yi += 3;
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else{
/ W s' q/ I% W/ N, {8 Nkc = buf & 0x7F;# k. l+ B3 _ i( z/ C& {9 }
i++;$ r# ]! {6 f n1 ^
}
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kc = s | kc;
4 S# @8 x" q. F' A- Mreturn kc;
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