/*
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* Copyright (c) 2016 Zibin Zheng <znbin@qq.com>
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* All rights reserved
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*/
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#ifndef _MULTI_BUTTON_H_
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#define _MULTI_BUTTON_H_
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//#include "stdint.h"
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#include "string.h"
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#include "define_all.h"
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//According to your need to modify the constants.
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#define TICKS_INTERVAL 20 //ms
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#define DEBOUNCE_TICKS 3 //MAX 8
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#define SHORT_TICKS (300 /TICKS_INTERVAL)
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#define LONG_TICKS (2000 /TICKS_INTERVAL)
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typedef void (*BtnCallback)(void*);
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typedef enum {
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PRESS_DOWN = 0, //按下触发
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PRESS_UP, //松开触发
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PRESS_REPEAT, //按下repeat次触发
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SINGLE_CLICK, //单击按键
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DOUBLE_CLICK, //双击按键
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LONG_PRESS_START, //长按到阈值
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LONG_PRESS_HOLD, //长按期间一直触发
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number_of_event,
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NONE_PRESS
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}PressEvent;
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typedef struct Button {
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uint16_t ticks;
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uint8_t repeat : 4;
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uint8_t event : 4;//按键的事件
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uint8_t state : 3;
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uint8_t debounce_cnt : 3;
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uint8_t active_level : 1;//有效的触发电平
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uint8_t button_level : 1;
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uint8_t (*hal_button_Level)(void);//GPIO电平读取接口的函数指针
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BtnCallback cb[number_of_event];//声明一个BtnCallback函数指针类型的数组
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struct Button* next;//代表链表的结构体指针
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}Button;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void button_init(struct Button* handle, uint8_t(*pin_level)(), uint8_t active_level);
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void button_attach(struct Button* handle, PressEvent event, BtnCallback cb);
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PressEvent get_button_event(struct Button* handle);
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int button_start(struct Button* handle);
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void button_stop(struct Button* handle);
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void button_ticks(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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