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key_board.c 22.59 KB
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wei 提交于 2021-10-20 11:36 . 优化部分堆内存的使用
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#include "key_board/key_board.h"
#if ((KEY_LONG_SUPPORT != KEY_ENABLE) && (KEY_LONG_SUPPORT != KEY_DISABLE))
#error "KEY_LONG_SUPPORT can be only set to KEY_ENABLE or KEY_DISABLE."
#endif
#if ((KEY_MULTI_SUPPORT != KEY_ENABLE) && (KEY_MULTI_SUPPORT != KEY_DISABLE))
#error "KEY_MULTI_SUPPORT can be only set to KEY_ENABLE or KEY_DISABLE."
#endif
#if ((KEY_CONTINUOUS_SUPPORT != KEY_ENABLE) && (KEY_CONTINUOUS_SUPPORT != KEY_DISABLE))
#error "KEY_CONTINUOUS_SUPPORT can be only set to KEY_ENABLE or KEY_DISABLE."
#endif
#if ((KEY_COMBINE_SUPPORT != KEY_ENABLE) && (KEY_COMBINE_SUPPORT != KEY_DISABLE))
#error "KEY_COMBINE_SUPPORT can be only set to KEY_ENABLE or KEY_DISABLE."
#endif
#if (KEY_BOARD_MAX_NUM <= 0)
#error "The value of KEY_BOARD_MAX_NUM must be greater than 0."
#endif
#if (KEY_MAX_NUM <= 0)
#error "The value of KEY_MAX_NUM must be greater than 0."
#endif
#if (KEY_LONG_SUPPORT == KEY_ENABLE)
#if (KEY_DEFAULT_LONG_TRRIGER_TIME <= 0)
#error "The value of KEY_DEFAULT_LONG_TRRIGER_TIME must be greater than 0."
#endif
#endif
#if (KEY_MULTI_SUPPORT == KEY_ENABLE)
#if (KEY_DEFAULT_MULTI_INTERVAL_TIME <= 0)
#error "The value of KEY_DEFAULT_MULTI_INTERVAL_TIME must be greater than 0."
#elif (KEY_DEFAULT_MULTI_INTERVAL_TIME <= KEY_DEFAULT_DEBOUNCE_TIME)
#warning "It is strongly recommended that the value of KEY_DEFAULT_MULTI_INTERVAL_TIME is greater than the value of KEY_DEFAULT_DEBOUNCE_TIME."
#endif
#endif
#if (KEY_CONTINUOUS_SUPPORT == KEY_ENABLE)
#if (KEY_DEFAULT_CONTINUOUS_INIT_TRRIGER_TIME <= 0)
#error "The value of KEY_DEFAULT_CONTINUOUS_INIT_TRRIGER_TIME must be greater than 0."
#endif
#if (KEY_DEFAULT_CONTINUOUS_PERIOD_TRRIGER_TIME <= 0)
#error "The value of KEY_DEFAULT_CONTINUOUS_PERIOD_TRRIGER_TIME must be greater than 0."
#endif
#endif
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
#if (KEY_DEFAULT_COMBINE_INTERVAL_TIME <= 0)
#error "The value of KEY_DEFAULT_COMBINE_INTERVAL_TIME must be greater than 0."
#elif (KEY_DEFAULT_COMBINE_INTERVAL_TIME <= KEY_DEFAULT_DEBOUNCE_TIME)
#warning "It is strongly recommended that the value of KEY_DEFAULT_COMBINE_INTERVAL_TIME is greater than the value of KEY_DEFAULT_DEBOUNCE_TIME."
#endif
#endif
#if (KEY_DEFAULT_DEBOUNCE_TIME < 0)
#error "The value of KEY_DEFAULT_DEBOUNCE_TIME must be greater than or equal to 0."
#endif
#define KEY_MAX_TIME ((1u << ((sizeof(unsigned int) << 3) - 1)) - 1)
#define KEY_TIME_CHECK(x) ((x) < KEY_MAX_TIME ? (x) : KEY_MAX_TIME - 1)
struct event_cnt_t {
unsigned int rd_cnt : 16,
wr_cnt : 16;
};
struct key_private_t {
struct key_public_sig_t *property;
enum key_state_t state; //按键状态
bool last_level; //按键上次电平(有效/无效)
bool this_level; //按键本次电平(有效/无效)
struct event_cnt_t release_event; //弹起事件计数
struct event_cnt_t press_event; //按下事件计数
struct event_cnt_t pressing_event; //任然按下事件计数
unsigned int init_debounce_time; //初始消抖时间
unsigned int debounce_time; //消抖计时
#if (KEY_LONG_SUPPORT == KEY_ENABLE)
struct {
unsigned int trriger_time; //触发时间
unsigned int press_time; //已按下时间
bool trriger_flag; //触发标志
}long_press, long_release;
struct event_cnt_t press_long_event; //按下长按事件计数
struct event_cnt_t release_long_event; //弹起长按事件计数
#endif
#if (KEY_MULTI_SUPPORT == KEY_ENABLE)
struct {
unsigned int count; //多击次数
unsigned int timecnt; //记录距上次点击的时间
unsigned int interval; //连续两次点击的最大允许间隔时间
}multi_click_press, multi_click_release;
struct event_cnt_t press_multi_event; //按下多击事件计数
struct event_cnt_t release_multi_event; //弹起多击事件计数
#endif
#if (KEY_CONTINUOUS_SUPPORT == KEY_ENABLE)
struct {
unsigned int trriger_time; //触发时间
unsigned int trriger_period; //触发周期
unsigned int press_time; //已按下时间
}continuous;
struct event_cnt_t press_continuous_event; //连按事件计数
#endif
};
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
struct {
unsigned int timecnt; //记录距上次触发的时间
unsigned int interval; //连续两次触发的最大允许间隔时间
struct match_list_t {
const struct key_combine_t *match; //需要匹配的组合状态
unsigned int n; //记录组合状态的位数
unsigned int match_count; //已匹配成功计数
struct match_list_t *next; //用于链接下一个注册的组合状态
struct event_cnt_t combine_event; //组合事件计数
}head; //注册的组合状态的链表头
}static combine;
#endif
struct key_board_t {
enum key_board_type_t type; //键盘类型
unsigned int sig_num; //信号线的数量
struct key_private_t *sig; //信号线的相关信息
//仅用于矩阵键盘
unsigned int ctrl_num; //控制线的数量
unsigned int sig_per_ctrl; //每根控制线上信号线的数量
struct key_public_ctrl_t *ctrl; //控制线的相关信息
};
static struct key_board_t *key_board[KEY_BOARD_MAX_NUM];
static unsigned int key_hash_map[KEY_MAX_NUM]; //用于根据id快速查找按键的对象(线性探测法)
static unsigned int key_press_count; //用于记录当前按下键的计数
static print_debug_callback internal_print_debug; //调试信息输出
static unsigned int key_tick_ms; //tick
static inline void debug(const char *func, int line, const char *message)
{
#include <stdio.h>
static char buff[128];
sprintf(buff, "func:%s, line:%u, %s\n", func, line, message);
if(internal_print_debug)
{
internal_print_debug(buff);
}
}
int key_board_init(void)
{
memset(key_board, 0, sizeof(key_board));
for(unsigned int i= 0;i < GET_ARRAY_SIZE(key_hash_map);i++)
{
key_hash_map[i] = (unsigned int)-1;
}
key_press_count = 0;
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
memset(&combine, 0, sizeof(combine));
combine.head.next = NULL;
#endif
key_tick_ms = 0;
return 0;
}
struct key_board_t *key_board_register(enum key_board_type_t type, const struct key_public_sig_t sig[], unsigned int key_sig_n, const struct key_public_ctrl_t ctrl[], unsigned int key_ctrl_n)
{
struct key_board_t *obj;
unsigned int handle_no_use;
unsigned int i;
for(handle_no_use = 0;handle_no_use < GET_ARRAY_SIZE(key_board) && key_board[handle_no_use];handle_no_use++);
if(handle_no_use >= GET_ARRAY_SIZE(key_board))
{
debug(__FUNCTION__, __LINE__, "exceed the max configure value [KEY_BOARD_MAX_NUM]");
return NULL;
}
obj = malloc(sizeof(struct key_board_t));
if(!obj)
{
debug(__FUNCTION__, __LINE__, "malloc failed");
return NULL;
}
memset(obj, 0, sizeof(struct key_board_t));
key_board[handle_no_use] = obj;
obj->type = type;
obj->sig_num = key_sig_n;
obj->sig = malloc(key_sig_n * sizeof(struct key_private_t));
if(!obj->sig)
{
debug(__FUNCTION__, __LINE__, "malloc failed");
return NULL;
}
memset(obj->sig, 0, key_sig_n * sizeof(struct key_private_t));
for(i = 0;i < key_sig_n;i++)
{
obj->sig[i].property = (struct key_public_sig_t *)&sig[i];
obj->sig[i].init_debounce_time = KEY_TIME_CHECK(KEY_DEFAULT_DEBOUNCE_TIME);
#if (KEY_LONG_SUPPORT == KEY_ENABLE)
obj->sig[i].long_press.trriger_time = KEY_TIME_CHECK(KEY_DEFAULT_LONG_TRRIGER_TIME);
obj->sig[i].long_release.trriger_time = KEY_TIME_CHECK(KEY_DEFAULT_LONG_TRRIGER_TIME);
#endif
#if (KEY_MULTI_SUPPORT == KEY_ENABLE)
obj->sig[i].multi_click_press.interval = KEY_TIME_CHECK(KEY_DEFAULT_MULTI_INTERVAL_TIME);
obj->sig[i].multi_click_release.interval = KEY_TIME_CHECK(KEY_DEFAULT_MULTI_INTERVAL_TIME);
#endif
#if (KEY_CONTINUOUS_SUPPORT == KEY_ENABLE)
obj->sig[i].continuous.trriger_time = KEY_TIME_CHECK(KEY_DEFAULT_CONTINUOUS_INIT_TRRIGER_TIME);
obj->sig[i].continuous.trriger_period = KEY_TIME_CHECK(KEY_DEFAULT_CONTINUOUS_PERIOD_TRRIGER_TIME);
#endif
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
combine.interval = KEY_TIME_CHECK(KEY_DEFAULT_COMBINE_INTERVAL_TIME);
#endif
//通过取模得到插入位置
unsigned int idx, backup;
backup = idx = obj->sig[i].property->id % GET_ARRAY_SIZE(key_hash_map);
while(key_hash_map[idx] != (unsigned int)-1)
{
if(obj->sig[key_hash_map[idx]].property->id == obj->sig[i].property->id)
{
debug(__FUNCTION__, __LINE__, "the key id is already register");
//id 已存在
return NULL;
}
idx = (idx + 1) % GET_ARRAY_SIZE(key_hash_map);
if(idx == backup)
{
debug(__FUNCTION__, __LINE__, "exceed the max configure value [KEY_MAX_NUM]");
//无空位置
return NULL;
}
}
key_hash_map[idx] = i;
}
if(obj->type == KEY_BOARD_MATRIX)
{
obj->ctrl_num = key_ctrl_n;
obj->sig_per_ctrl = key_sig_n / key_ctrl_n;
obj->ctrl = (struct key_public_ctrl_t *)ctrl;
for(i = 0;i < key_ctrl_n;i++)
{
//将控制线拉到无效电平
ctrl[i].set(ctrl[i].pin_desc, false);
}
}
return obj;
}
void key_board_unregister(struct key_board_t *obj)
{
unsigned int i;
for(i = 0;i < GET_ARRAY_SIZE(key_board) && key_board[i];i++)
{
if(obj == key_board[i])
{
free(obj->sig);
obj->sig = NULL;
free(obj);
key_board[i] = NULL;
}
}
}
void key_board_destroy(void)
{
struct key_board_t *obj;
unsigned int i;
for(i = 0;i < GET_ARRAY_SIZE(key_board) && key_board[i];i++)
{
obj = key_board[i];
free(obj->sig);
obj->sig = NULL;
free(obj);
key_board[i] = NULL;
}
}
static inline unsigned int key_event(struct event_cnt_t *ev)
{
unsigned int ret;
ret = 0;
if(ev->wr_cnt != ev->rd_cnt)
{
++ev->rd_cnt;
ret = 1;
}
return ret;
}
unsigned int key_check_state(unsigned int id, enum key_state_t state)
{
struct key_board_t *obj;
unsigned int i;
unsigned int idx, backup;
for(i = 0;i < GET_ARRAY_SIZE(key_board) && key_board[i];i++)
{
obj = key_board[i];
//如果要查找的id对应在hash表中向后查找已经有空位了那这个id肯定不存在
backup = idx = id % GET_ARRAY_SIZE(key_hash_map);
while(key_hash_map[idx] != (unsigned int)-1)
{
if(obj->sig[key_hash_map[idx]].property->id == id)
{
switch(state)
{
case KEY_RELEASE:
return key_event(&obj->sig[key_hash_map[idx]].release_event);
case KEY_PRESS:
return key_event(&obj->sig[key_hash_map[idx]].press_event);
case KEY_PRESSING:
return key_event(&obj->sig[key_hash_map[idx]].pressing_event);
#if (KEY_LONG_SUPPORT == KEY_ENABLE)
case KEY_PRESS_LONG:
return key_event(&obj->sig[key_hash_map[idx]].press_long_event);
case KEY_RELEASE_LONG:
return key_event(&obj->sig[key_hash_map[idx]].release_long_event);
#endif
#if (KEY_MULTI_SUPPORT == KEY_ENABLE)
case KEY_PRESS_MULTI:
return key_event(&obj->sig[key_hash_map[idx]].press_multi_event) ? obj->sig[key_hash_map[idx]].multi_click_press.count : 0;
case KEY_RELEASE_MULTI:
return key_event(&obj->sig[key_hash_map[idx]].release_multi_event) ? obj->sig[key_hash_map[idx]].multi_click_release.count : 0;
#endif
#if (KEY_CONTINUOUS_SUPPORT == KEY_ENABLE)
case KEY_PRESS_CONTINUOUS:
return key_event(&obj->sig[key_hash_map[idx]].press_continuous_event);
#endif
default :
return 0;
}
}
idx = (idx + 1) % GET_ARRAY_SIZE(key_hash_map);
if(idx == backup)
{
//未找到
break;
}
}
}
return 0;
}
unsigned int key_press_count_get(void)
{
return key_press_count;
}
static inline void key_press_count_stats(struct key_private_t *sig)
{
if(sig->state & KEY_PRESS)
{
++key_press_count;
}
else if(sig->state & KEY_RELEASE)
{
--key_press_count;
}
}
unsigned int key_combine_register(const struct key_combine_t c[], unsigned int n)
{
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
struct match_list_t *item;
item = malloc(sizeof(struct match_list_t));
if(!item)
{
debug(__FUNCTION__, __LINE__, "malloc failed");
return 0;
}
item->match = c;
item->n = n;
item->match_count = 0;
item->next = combine.head.next;
item->combine_event.rd_cnt = 0;
item->combine_event.wr_cnt = 0;
combine.head.next = item;
return (unsigned int)item;
#else
return 0;
#endif
}
void key_combine_unregister(unsigned int id)
{
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
struct match_list_t *item;
struct match_list_t *del;
item = &combine.head;
while(item->next && (item->next != (struct match_list_t *)id))
{
item = item->next;
}
if(item->next)
{
del = item->next;
item->next = item->next->next;
free(del);
}
#endif
}
unsigned int key_check_combine_state(unsigned int id)
{
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
struct match_list_t *item;
item = (struct match_list_t *)id;
return key_event(&item->combine_event);
#else
return 0;
#endif
}
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
static inline void key_check_combine_pre(void)
{
struct match_list_t *item;
if(combine.timecnt && (key_tick_ms - combine.timecnt < KEY_MAX_TIME))
{
combine.timecnt = 0;
//两次触发间隔超时
item = combine.head.next;
while(item)
{
item->match_count = 0;
item = item->next;
}
}
}
static inline void key_check_combine(struct key_private_t *sig)
{
struct match_list_t *item;
bool flag;
item = combine.head.next;
while(item)
{
if(item->match[item->match_count].state & sig->state)
{
flag = (item->match[item->match_count].id == sig->property->id);
if(!flag && item->match_count)
{
//本次匹配失败,但是之前已经有成功匹配的,则重新匹配
item->match_count = 0;
flag = (item->match[item->match_count].id == sig->property->id) &&
(item->match[item->match_count].state & sig->state);
if(flag)
{
++item->match_count;
}
}
else if(flag)
{
//重新计时
combine.timecnt = combine.interval + key_tick_ms;
//匹配成功
++item->match_count;
}
}
if(item->match_count == item->n)
{
item->match_count = 0;
++item->combine_event.wr_cnt;
}
item = item->next;
}
}
#endif
#if (KEY_LONG_SUPPORT == KEY_ENABLE)
static inline void key_check_long(struct key_private_t *sig)
{
if(sig->state & KEY_PRESS)
{
sig->long_press.press_time = sig->long_press.trriger_time + key_tick_ms;
sig->long_release.press_time = sig->long_release.trriger_time + key_tick_ms;
sig->long_press.trriger_flag = false;
}
else if(sig->state & (KEY_PRESSING | KEY_PRESSING_DEBOUNCING))
{
if((sig->property->function & KEY_FLAG_PRESS_LONG) && (key_tick_ms - sig->long_press.press_time < KEY_MAX_TIME))
{
if(!sig->long_press.trriger_flag)
{
//仅触发一次
sig->long_press.trriger_flag = true;
sig->state |= KEY_PRESS_LONG;
++sig->press_long_event.wr_cnt;
}
}
}
else if(sig->state & KEY_RELEASE)
{
if((sig->property->function & KEY_FLAG_RELEASE_LONG) && (key_tick_ms - sig->long_release.press_time < KEY_MAX_TIME))
{
sig->state |= KEY_RELEASE_LONG;
++sig->release_long_event.wr_cnt;
}
}
}
#endif
#if (KEY_MULTI_SUPPORT == KEY_ENABLE)
static inline void key_check_multi(struct key_private_t *sig)
{
if((sig->property->function & KEY_FLAG_PRESS_MULTI) && (sig->state & KEY_PRESS))
{
//标记按下次数
++sig->multi_click_press.count;
if(sig->multi_click_press.count >= 2)
{
sig->state |= KEY_PRESS_MULTI;
++sig->press_multi_event.wr_cnt;
}
sig->multi_click_press.timecnt = sig->multi_click_press.interval + key_tick_ms;
}
if(sig->multi_click_press.count)
{
if(key_tick_ms - sig->multi_click_press.timecnt < KEY_MAX_TIME)
{
sig->multi_click_press.count = 0;
}
}
if((sig->property->function & KEY_FLAG_RELEASE_MULTI) && (sig->state & KEY_RELEASE))
{
//标记弹起次数
++sig->multi_click_release.count;
if(sig->multi_click_release.count >= 2)
{
sig->state |= KEY_RELEASE_MULTI;
++sig->release_multi_event.wr_cnt;
}
sig->multi_click_release.timecnt = sig->multi_click_release.interval + key_tick_ms;
}
if(sig->multi_click_release.count)
{
if(key_tick_ms - sig->multi_click_release.timecnt < KEY_MAX_TIME)
{
sig->multi_click_release.count = 0;
}
}
}
#endif
#if (KEY_CONTINUOUS_SUPPORT == KEY_ENABLE)
static inline void key_check_continuous(struct key_private_t *sig)
{
if(sig->state & KEY_PRESS)
{
sig->continuous.press_time = sig->continuous.trriger_time + key_tick_ms;
}
else if(sig->state & (KEY_PRESSING | KEY_PRESSING_DEBOUNCING))
{
if((sig->property->function & KEY_FLAG_PRESS_CONTINUOUS) && (key_tick_ms - sig->continuous.press_time < KEY_MAX_TIME))
{
sig->state |= KEY_PRESS_CONTINUOUS;
++sig->press_continuous_event.wr_cnt;
sig->continuous.press_time = sig->continuous.trriger_period + key_tick_ms;
}
}
}
#endif
void key_check(void)
{
struct key_board_t *obj;
unsigned int i, j;
unsigned int last, next;
++key_tick_ms;
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
key_check_combine_pre();
#endif
for(i = 0;i < GET_ARRAY_SIZE(key_board) && key_board[i];i++)
{
obj = key_board[i];
last = obj->ctrl_num - 1;
next = 0;
for(j = 0;j < obj->sig_num;j++)
{
if((obj->type == KEY_BOARD_MATRIX) && ((j % obj->sig_per_ctrl) == 0))
{
//上次扫描的控制线拉到无效电平
obj->ctrl[last].set(obj->ctrl[last].pin_desc, false);
last = next = j / obj->sig_per_ctrl;
//即将扫描的控制线拉到有效电平
obj->ctrl[next].set(obj->ctrl[next].pin_desc, true);
}
obj->sig[j].this_level = obj->sig[j].property->get(obj->sig[j].property->pin_desc);
switch((obj->sig[j].this_level << 4) | (obj->sig[j].last_level))
{
case 0x00:
////清0,解决多次消抖产生的BUG
obj->sig[j].debounce_time = 0;
obj->sig[j].state = KEY_NONE;
break;
case 0x01:
if((0 == obj->sig[j].init_debounce_time) ||
(obj->sig[j].debounce_time && (key_tick_ms - obj->sig[j].debounce_time < KEY_MAX_TIME)))
{
//不需要消抖或处于消抖状态并且达到消抖计时
obj->sig[j].state = KEY_RELEASE;
++obj->sig[j].release_event.wr_cnt;
}
else if(0 == obj->sig[j].debounce_time)
{
obj->sig[j].state = KEY_PRESSING_DEBOUNCING;
//置消抖计时
obj->sig[j].debounce_time = obj->sig[j].init_debounce_time + key_tick_ms;
}
break;
case 0x10:
if((0 == obj->sig[j].init_debounce_time) ||
(obj->sig[j].debounce_time && (key_tick_ms - obj->sig[j].debounce_time < KEY_MAX_TIME)))
{
obj->sig[j].state = KEY_PRESS;
++obj->sig[j].press_event.wr_cnt;
}
else if(0 == obj->sig[j].debounce_time)
{
obj->sig[j].state = KEY_PRESS_DEBOUNCING;
obj->sig[j].debounce_time = obj->sig[j].init_debounce_time + key_tick_ms;
}
break;
case 0x11:
//清0,解决多次消抖产生的BUG
obj->sig[j].debounce_time = 0;
obj->sig[j].state = KEY_PRESSING;
++obj->sig[j].pressing_event.wr_cnt;
break;
}
//如果处于消抖过程则不保存本次电平状态
if(!(obj->sig[j].state & (KEY_PRESS_DEBOUNCING | KEY_PRESSING_DEBOUNCING)))
{
obj->sig[j].last_level = obj->sig[j].this_level;
}
key_press_count_stats(&obj->sig[j]);
#if (KEY_LONG_SUPPORT == KEY_ENABLE)
key_check_long(&obj->sig[j]);
#endif
#if (KEY_MULTI_SUPPORT == KEY_ENABLE)
key_check_multi(&obj->sig[j]);
#endif
#if (KEY_CONTINUOUS_SUPPORT == KEY_ENABLE)
key_check_continuous(&obj->sig[j]);
#endif
#if (KEY_COMBINE_SUPPORT == KEY_ENABLE)
key_check_combine(&obj->sig[j]);
#endif
}
}
}
void key_board_debug_register(print_debug_callback print_debug)
{
internal_print_debug = print_debug;
}
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https://gitee.com/xu6158/key_board.git
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xu6158
key_board
key_board
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