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发表于 2009-9-1 16:31:15
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#include <stdio.h> 0 l. T" k2 i& @4 h" L
#include <string.h> " l: i! i' l" w: a. o
#include <errno.h> ; s' @" C4 Z6 K+ A0 s% n
#include <unistd.h> & }3 |+ X1 Y1 q# S6 W" U
#include <fcntl.h> 2 B: R0 W# \9 O
#include <linux/kd.h># d3 S9 P& a, ]' p
#include <linux/keyboard.h>
5 ]3 w* G2 e. E$ o' u+ D8 U/ i( O#include <termios.h>
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#define KEY_DOWN 0x100* @0 }4 S6 X% q: d; x: A
#define KEY_UP 0x000- S, g! N: v/ y
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int oldmode;
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" D3 T# a0 p" E7 o; Wstruct termios new;6 D' {/ H: T& |2 r# d
struct termios old;0 q* P6 C6 u. { V4 I6 h
* ^0 Q+ L/ |4 x) ~: D9 Xint get_key_input(void)
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int keyboard;- B) S/ v7 d6 v" N2 _' V
int keyboardcode;
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' [4 b% s O7 Q( lkeyboard = init_keyboard();) k* }: T+ ]0 f7 _% P3 W+ }/ Z' f
do{
4 d; D' {! O, ^/ ukeyboardcode = poll_keyboard(keyboard); 4 N: k" }% W8 \5 b
if((keyboardcode != 0) && (keyboardcode & KEY_DOWN)){ 6 K6 M9 u4 x8 W0 ~ `
keyboardcode = keyboardcode & 0xFF;, R4 N! j. t, Q* Y# n1 q) n, [6 m
//
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; I/ e5 S; D; K k}while( keyboard != 0x58); ! n. ^5 Z$ g! c% [6 A
exit_keyboard(keyboard);: A1 a/ W' m# P+ X' v
return 0;
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int exit_keyboard(int keyboard)
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ioctl(keyboard, KDSKBMODE, oldmode);8 e) P! W+ m: `" B8 ]
tcsetattr( keyboard, 0, &old);& j9 ]$ b- v' ]. Y& B* I, y" G
close(keyboard);
# o3 `+ q7 i: w r/ zreturn 0;
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int init_keyboard(void)3 D- J- M7 p& ^8 `
{
Y3 j6 v4 v4 L& E- tint keyboard;
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keyboard = open("/dev/tty", O_RDONLY);
5 C/ E3 ?0 b0 K* a2 o: J5 ?ioctl(keyboard, KDGKBMODE, &oldmode);
g* V! K5 |2 t' p. X/ j( C9 Wtcgetattr( keyboard, &old);/ T, c! N( @0 n8 ~8 s" J4 _* z7 u
tcgetattr( keyboard, &new);
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new.c_lflag &= ~(ICANON | ECHO | ISIG);
8 N2 ~* o( Z& x( B8 J1 Tnew.c_iflag = 0;3 W4 m# ~) E+ s9 I
new.c_cc[VMIN] = 0;
5 \6 w/ O" \$ w( P. H( Z: j# ?new.c_cc[VTIME] = 1;' }2 ` n; Y; R" U# \
; n( v& d# X9 c- ^- Ktcsetattr(keyboard, TCSAFLUSH, &new); ~) q# Q! I4 k4 m
ioctl(keyboard, KDSKBMODE, K_RAW);
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7 \# ] M; I7 @ q- o5 {* Freturn keyboard;
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int poll_keyboard(int keyboard) / w* b) }; h$ C2 b5 \' c. m
{
+ Q3 |0 A8 p3 e0 L; B; x sunsigned char buf[5];! \) {7 B0 N7 c1 @. I
int n;6 a5 j X( H; N# o; A- e
8 y$ U2 m9 f) |' T; [: s8 Xint kc = 0;# l: R7 S/ Z8 O/ @' p# E/ M4 ~ p
int i = 0;
' d+ `$ U( e" m/ V u2 yint s = 0;
# T% I5 c& r2 q8 p8 ]n = read(keyboard, &buf, sizeof(buf)); ' C2 p/ l7 o" X" H, E! a
while( i < n){: e% c+ q) `! `- e
s = (buf & 0x80) ? 0:1;
- [& C- w2 y% S& F, |0 Js = s << 8;
* M S4 {' X# r/ M \, mif((i + 2) < n && (buf & 0x7F) == 0 && ( buf[i+1] & 0x80) != 0 && (buf[i+2] & 0x80) != 0){
# K5 ^7 [2 Z: M3 B; mkc = ((buf[i+1] & 0x7F ) << 7 ) |(buf[i+2] & 0x7F);3 ^9 e% r, u5 D$ E- h) @
i += 3;
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, Z# {9 |' u6 ]9 J8 Xelse{
2 W/ D8 t* j; y' N* l3 ]$ g1 pkc = buf & 0x7F;' |$ H6 b& G* }- ]) m; l6 `/ R$ @
i++;( _; W1 h3 ], J
}
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kc = s | kc;3 v) \& Z& `+ _8 j1 N* n4 w
return kc;
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发表于 2009-7-24 11:54:29