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32 changes: 17 additions & 15 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ MultiButton的作者是0x1abin, github地址: https://github.com/0x1abin/MultiBu
1.先申请一个按键结构

```c
struct Button button1;
struct button button1;
```
2.初始化按键对象,绑定按键的GPIO电平读取接口**read_button_pin()** ,后一个参数设置有效触发电平

Expand Down Expand Up @@ -46,20 +46,22 @@ while(1) {
MultiButton 使用C语言实现,基于面向对象方式设计思路,每个按键对象单独用一份数据结构管理:

```c
struct Button {
uint16_t ticks;
uint8_t repeat: 4;
uint8_t event : 4;
uint8_t state : 3;
uint8_t debounce_cnt : 3;
uint8_t active_level : 1;
uint8_t button_level : 1;
uint8_t (*hal_button_Level)(void);
BtnCallback cb[number_of_event];
struct Button* next;
struct button {
uint16_t ticks;
uint16_t short_ticks;
uint16_t long_ticks;
uint8_t repeat : 4;
uint8_t event : 4;
uint8_t state : 3;
uint8_t debounce_cnt : 3;
uint8_t active_level : 1;
uint8_t button_level : 1;
uint8_t (*hal_button_Level)(void);
BtnCallback cb[number_of_event];
button_t next;
};
```
这样每个按键使用单向链表相连,依次进入 button_handler(struct Button* handle) 状态机处理,所以每个按键的状态彼此独立。
这样每个按键使用单向链表相连,依次进入 button_handler(button_t handle) 状态机处理,所以每个按键的状态彼此独立。


## 按键事件
Expand All @@ -78,9 +80,9 @@ LONG_PRESS_HOLD | 长按期间一直触发
## Examples

```c
#include "button.h"
#include <multi_button.h>

struct Button btn1;
struct button btn1;

uint8_t read_button1_GPIO()
{
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4 changes: 2 additions & 2 deletions examples/event_async.c
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
#include <rtthread.h>
#include <rtdevice.h>
#include "multi_button.h"
#include <multi_button.h>

static struct button btn;

Expand All @@ -15,7 +15,7 @@ void button_callback(void *btn)
{
uint32_t btn_event_val;

btn_event_val = get_button_event((struct button *)btn);
btn_event_val = get_button_event((button_t)btn);

switch(btn_event_val)
{
Expand Down
2 changes: 1 addition & 1 deletion examples/event_inquire.c
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
#include <rtthread.h>
#include <rtdevice.h>
#include "multi_button.h"
#include <multi_button.h>

static struct button btn;

Expand Down
65 changes: 46 additions & 19 deletions multi_button.c
Original file line number Diff line number Diff line change
Expand Up @@ -18,9 +18,10 @@
*/
#include "multi_button.h"

#define EVENT_CB(ev) if(handle->cb[ev]) handle->cb[ev]((button*)handle)
#define EVENT_CB(ev) if(handle->cb[ev]) handle->cb[ev]((void*)handle)
#define PRESS_REPEAT_MAX_NUM 15 /*!< The maximum value of the repeat counter */

static struct button* head_handle = NULL;
static button_t head_handle = NULL;

/**
* @brief Initializes the button struct handle.
Expand All @@ -29,13 +30,15 @@ static struct button* head_handle = NULL;
* @param active_level: pin pressed level.
* @retval None
*/
void button_init(struct button* handle, uint8_t(*pin_level)(void), uint8_t active_level)
void button_init(button_t handle, uint8_t(*pin_level)(void), uint8_t active_level)
{
memset(handle, 0, sizeof(struct button));
handle->event = (uint8_t)NONE_PRESS;
handle->hal_button_Level = pin_level;
handle->button_level = handle->hal_button_Level();
handle->button_level = !active_level;
handle->active_level = active_level;
handle->short_ticks = SHORT_TICKS;
handle->long_ticks = LONG_TICKS;
}

/**
Expand All @@ -45,17 +48,39 @@ void button_init(struct button* handle, uint8_t(*pin_level)(void), uint8_t activ
* @param cb: callback function.
* @retval None
*/
void button_attach(struct button* handle, PressEvent event, BtnCallback cb)
void button_attach(button_t handle, PressEvent event, BtnCallback cb)
{
handle->cb[event] = cb;
}

/**
* @brief Attach the button adjust ticks
* @param handle: the button handle strcut.
* @param ticks: judge short ticks(unit:ms)
* @retval None
*/
void button_set_short_ticks(button_t handle, uint16_t ticks)
{
handle->short_ticks = ticks / TICKS_INTERVAL;
}

/**
* @brief Attach the button adjust long ticks
* @param handle: the button handle strcut.
* @param ticks: judge long ticks(unit:ms)
* @retval None
*/
void button_set_long_ticks(button_t handle, uint16_t ticks)
{
handle->long_ticks = ticks / TICKS_INTERVAL;
}

/**
* @brief Inquire the button event happen.
* @param handle: the button handle struct.
* @retval button event.
*/
PressEvent get_button_event(struct button* handle)
PressEvent get_button_event(button_t handle)
{
return (PressEvent)(handle->event);
}
Expand All @@ -65,7 +90,7 @@ PressEvent get_button_event(struct button* handle)
* @param handle: the button handle struct.
* @retval None
*/
static void button_handler(struct button* handle)
static void button_handler(button_t handle)
{
uint8_t read_gpio_level = handle->hal_button_Level();

Expand Down Expand Up @@ -117,9 +142,8 @@ static void button_handler(struct button* handle)
EVENT_CB(PRESS_UP);
handle->ticks = 0;
handle->state = 2;

}
else if(handle->ticks > LONG_TICKS)
else if(handle->ticks > handle->long_ticks)
{
handle->event = (uint8_t)LONG_PRESS_START;
EVENT_CB(LONG_PRESS_START);
Expand All @@ -132,12 +156,15 @@ static void button_handler(struct button* handle)
{
handle->event = (uint8_t)PRESS_DOWN;
EVENT_CB(PRESS_DOWN);
handle->repeat++;
if(handle->repeat != PRESS_REPEAT_MAX_NUM)
{
handle->repeat++;
}
EVENT_CB(PRESS_REPEAT);
handle->ticks = 0;
handle->state = 3;
}
else if(handle->ticks > SHORT_TICKS)
else if(handle->ticks > handle->short_ticks)
{
if(handle->repeat == 1)
{
Expand All @@ -159,7 +186,7 @@ static void button_handler(struct button* handle)
handle->event = (uint8_t)PRESS_UP;
EVENT_CB(PRESS_UP);

if(handle->ticks < SHORT_TICKS)
if(handle->ticks < handle->short_ticks)
{
handle->ticks = 0;
handle->state = 2;
Expand All @@ -169,7 +196,7 @@ static void button_handler(struct button* handle)
handle->state = 0;
}
}
else if(handle->ticks > SHORT_TICKS) // SHORT_TICKS < press down hold time < LONG_TICKS
else if(handle->ticks > handle->short_ticks) // SHORT_TICKS < press down hold time < LONG_TICKS
{
handle->state = 1;
}
Expand Down Expand Up @@ -204,9 +231,9 @@ static void button_handler(struct button* handle)
* @param handle: target handle struct.
* @retval 0: succeed. -1: already exist.
*/
int button_start(struct button* handle)
int button_start(button_t handle)
{
struct button* target = head_handle;
button_t target = head_handle;

while(target)
{
Expand All @@ -229,13 +256,13 @@ int button_start(struct button* handle)
* @param handle: target handle struct.
* @retval None
*/
void button_stop(struct button* handle)
void button_stop(button_t handle)
{
struct button** curr;
button_t* curr;

for(curr = &head_handle; *curr;)
{
struct button* entry = *curr;
button_t entry = *curr;

if (entry == handle)
{
Expand All @@ -256,7 +283,7 @@ void button_stop(struct button* handle)
*/
void button_ticks(void)
{
struct button* target;
button_t target;

for(target = head_handle; target != NULL; target = target->next)
{
Expand Down
22 changes: 14 additions & 8 deletions multi_button.h
Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,12 @@ typedef enum {
NONE_PRESS
}PressEvent;

typedef struct button {

typedef struct button *button_t;
struct button {
uint16_t ticks;
uint16_t short_ticks;
uint16_t long_ticks;
uint8_t repeat : 4;
uint8_t event : 4;
uint8_t state : 3;
Expand All @@ -35,19 +39,21 @@ typedef struct button {
uint8_t button_level : 1;
uint8_t (*hal_button_Level)(void);
BtnCallback cb[number_of_event];
struct button* next;
}button;
button_t next;
};

#ifdef __cplusplus
extern "C" {
#endif

void button_init(struct button* handle, uint8_t(*pin_level)(void), uint8_t active_level);
void button_attach(struct button* handle, PressEvent event, BtnCallback cb);
PressEvent get_button_event(struct button* handle);
int button_start(struct button* handle);
void button_stop(struct button* handle);
void button_init(button_t handle, uint8_t(*pin_level)(void), uint8_t active_level);
void button_attach(button_t handle, PressEvent event, BtnCallback cb);
PressEvent get_button_event(button_t handle);
int button_start(button_t handle);
void button_stop(button_t handle);
void button_ticks(void);
void button_set_short_ticks(button_t handle, uint16_t ticks);
void button_set_long_ticks(button_t handle, uint16_t ticks);

#ifdef __cplusplus
}
Expand Down