LinuxµÄInput Device
Linux µÄ Input Device ÊÇÖØÒªµÄÒ»個 subsystem£¬ÔÚ進ÐÐ實Àý½é紹ǰ£¬ÏÈ´óÂÔÁ˽âÒ»ÏÂÏà關µÄ API¡£input.cÊÇLinuxµÄÊäÈë驅動³Ìʽ£¬Ö÷ÒªÖ§Ô®鍵盤與»¬ÊóµÄ輸È룻input.c½éÃæÌØÊâµÄµØ·½ÊÇ採ÓÃÁËʼþ£¨event£©µÄ·½Ê½來處Àí輸È룬ÒÔÏÂÊÇinput.c½éÃæÖØÒªµÄ資ÁÏ結構與º¯數£º
* struct input_dev
* void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
* void input_register_device(struct input_dev *);
* void input_unregister_device(struct input_dev *);
* void input_register_handler(struct input_handler *);
* void input_unregister_handler(struct input_handler *);
£¨1£© struct input_devÊÇÓÃ來ÃèÊö輸ÈëʼþµÄÖØÒª資ÁÏ結構£¬ÆäÔÐÍÈçÏ£º
struct input_dev {
const char *name;
const char *phys;
const char *uniq;
struct input_id id;
unsigned long evbit[BITS_TO_LONGS(EV_CNT)];
unsigned long keybit[BITS_TO_LONGS(KEY_CNT)];
unsigned long relbit[BITS_TO_LONGS(REL_CNT)];
unsigned long absbit[BITS_TO_LONGS(ABS_CNT)];
unsigned long mscbit[BITS_TO_LONGS(MSC_CNT)];
unsigned long ledbit[BITS_TO_LONGS(LED_CNT)];
unsigned long sndbit[BITS_TO_LONGS(SND_CNT)];
unsigned long ffbit[BITS_TO_LONGS(FF_CNT)];
unsigned long swbit[BITS_TO_LONGS(SW_CNT)];
unsigned int keycodemax;
unsigned int keycodesize;
void *keycode;
int (*setkeycode)(struct input_dev *dev, int scancode, int keycode);
int (*getkeycode)(struct input_dev *dev, int scancode, int *keycode);
struct ff_device *ff;
unsigned int repeat_key;
struct timer_list timer;
int sync;
int abs[ABS_MAX + 1];
int rep[REP_MAX + 1];
unsigned long key[BITS_TO_LONGS(KEY_CNT)];
unsigned long led[BITS_TO_LONGS(LED_CNT)];
unsigned long snd[BITS_TO_LONGS(SND_CNT)];
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#include <signal.h>
int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
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