初始化相关的硬件资源，用于单片机中的小巧多功能按键支持

#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