|
|
发表于 2009-9-1 16:31:15
|
显示全部楼层
#include <stdio.h> 7 J7 I) C# X: Q# q/ e6 w5 J
#include <string.h>
# T! F# z* l. r/ ?: o2 L#include <errno.h>
2 n- A) \1 Z' l! j- ^#include <unistd.h>
" a! Y2 k3 H* E8 b4 P#include <fcntl.h>
5 `. g6 h% J* A4 a, [#include <linux/kd.h>/ W- k% P& s {1 E7 M
#include <linux/keyboard.h> 0 G6 m* c$ w9 F3 ]& T& P
#include <termios.h>
C6 O9 k; o) K' C6 f! c1 ?; F$ e% S( ` R9 V7 W& \% R6 A4 j( s
! v3 s# C) o4 M) c+ R s& a/ f7 F, [
#define KEY_DOWN 0x100
' q9 r5 Y& j# { P. `: U9 ^#define KEY_UP 0x000+ o. s# d# X2 Y) o5 A- j
) T- x, s& S1 \int oldmode;
7 D3 b$ \9 l* S: A: {$ b T. h/ u* O5 E$ o1 G- [
struct termios new;! O6 k5 U/ a9 u9 I& C8 p
struct termios old;4 B3 H+ {4 S$ h; I" Q' g* E
' M* H* D0 Z& ?
int get_key_input(void)
7 O% w/ _' m. U{
9 h. O( ?" e: S d' k7 U/ V/ tint keyboard;/ R6 ^3 Q+ m0 I% a6 I8 \
int keyboardcode;' t) x5 r9 q* n
3 g3 C0 [" S& s% xkeyboard = init_keyboard();! ?* L. I, M# h8 @8 S8 Y
do{
! s9 S% s8 t t6 j; x7 S7 Skeyboardcode = poll_keyboard(keyboard);
# u: }) j8 x; n/ Sif((keyboardcode != 0) && (keyboardcode & KEY_DOWN)){
2 s3 o- S; n+ P" l: Q/ [ X7 ?keyboardcode = keyboardcode & 0xFF;3 i$ \: Q# i( Q0 G* g: K
//
1 Y: g' n+ L8 F- X0 o* H}
I/ Y, h3 g% B}while( keyboard != 0x58); & N$ Q, i6 { l' \3 d( l" U. N
exit_keyboard(keyboard);
5 g# L, F8 W# ~8 Q% e8 k6 kreturn 0;, z7 X+ y) Z7 b$ ^" M
}! w& L/ h' [5 q. Y4 o
1 k$ r: m2 p! k/ [" T+ N
int exit_keyboard(int keyboard)% d+ u" D0 i, |1 G" F
{( Z8 S; ~; @( L' T, b P' l, y
ioctl(keyboard, KDSKBMODE, oldmode);- H# y$ s# T3 U/ Q/ y1 x3 w u
tcsetattr( keyboard, 0, &old);% l- p. g& r% q6 H. u, e; M
close(keyboard);; [1 B3 D: B' ]
return 0;! d) c0 O Y7 q8 [
}) x8 K( I) E5 k/ A
int init_keyboard(void)
& r7 l9 Q1 n: S+ Y{
5 L$ l2 l# |0 G# Sint keyboard;
1 \ ?3 b6 ]( s. S
9 `8 L y# z6 z* }& h, F# u2 n" G+ [keyboard = open("/dev/tty", O_RDONLY);
# _% D+ } W8 Y. l' H8 aioctl(keyboard, KDGKBMODE, &oldmode);7 O, n5 R5 h6 B, q' j( m6 w
tcgetattr( keyboard, &old);
4 S z3 P) y; `tcgetattr( keyboard, &new); _2 ?# R/ T7 \$ T1 d
/ }. W; B) ~ }2 u$ g( tnew.c_lflag &= ~(ICANON | ECHO | ISIG);
) \$ `8 z" B8 a) Qnew.c_iflag = 0;# ^! {% t0 ^! T* R
new.c_cc[VMIN] = 0;( i% h" \3 K* {, M) M% j. [
new.c_cc[VTIME] = 1;: K7 F+ C. c" m6 g! T3 A
# E. |+ b6 d8 `) @2 y! [
tcsetattr(keyboard, TCSAFLUSH, &new);
& [" {$ I6 I" f+ r/ p, Tioctl(keyboard, KDSKBMODE, K_RAW);. } d. I4 E3 p: r; u6 p
) C7 G+ C' n( K
return keyboard;
; n- p% ]. ?0 ]8 T8 d$ Y' i# N5 Q
}- u( w: U' w* `$ Z8 r
3 g: s, ~4 P% b! `2 R
int poll_keyboard(int keyboard)
# S4 n0 r8 r5 N R' N& _{
d* s) B2 h! ?; P: |+ Cunsigned char buf[5];) @# k f, d- S9 y7 B
int n;: ^: M; `" }: S4 ?8 n9 [
. \& r' s }6 w) Q0 L0 N* f
int kc = 0;4 w" b" f2 F7 r, d1 w& Z
int i = 0;
; g2 Z! E. a% A! }# ~) ~0 Iint s = 0;' P3 A! _$ X( |/ Y! w5 ]
n = read(keyboard, &buf, sizeof(buf)); 4 y3 w8 k$ Y3 ]- {
while( i < n){
" S B+ I. @* L( d% f# A' zs = (buf & 0x80) ? 0:1;" n, C: q# b F6 S( y
s = s << 8;
( d4 r# E: S8 E5 m( bif((i + 2) < n && (buf & 0x7F) == 0 && ( buf[i+1] & 0x80) != 0 && (buf[i+2] & 0x80) != 0){( i! o, m, a% ^: f* y
kc = ((buf[i+1] & 0x7F ) << 7 ) |(buf[i+2] & 0x7F);
! X9 P1 ]1 q+ K) |1 hi += 3;4 h5 J8 V* H5 ?$ ~& @3 ?- A$ n
}* M' H# B: R( z/ c4 u! l; \) X' D% }
else{$ Z$ J/ N: ?1 H: W) A' i, j
kc = buf & 0x7F;- @3 o& M" O" w% R
i++;
( o0 U( {+ z9 n; p2 ^3 h, w7 G) L}6 [; t" f5 l( U, B$ k4 o
}2 e H3 N. H- V7 D
kc = s | kc;
; t$ Y% {7 g9 [' b |$ l6 O5 A4 qreturn kc; 6 a; O1 J! e" o% O0 x* ^0 Q" e
} |
|