0201_APP/BSP/key.c

/*
 * @Description: 
 * @Version: 2.0
 * @Author: Seven
 * @Date: 2022-06-14 17:48:09
 * @LastEditors: Seven
 * @LastEditTime: 2022-06-15 09:18:09
 */
#include "key.h"
#include "includes.h"

uint8_t hd_id = 0;
enum KEY_STATE{KEY_IDLE=0,FILTER,PRESS,RELEASE};
key_info_t key_info[KEY_NUM];


void HD_ID_Init(void)
{
    GPIO_COMM_Init(RCC_APB2Periph_GPIOE, GPIOE, 
			GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5, GPIO_Mode_IPU, GPIO_Speed_50MHz);
}

uint8_t get_HD_ID(void)
{
    uint8_t data = 0;
    if(HD_ID_0)
        data |= 1;
    if(HD_ID_1)
        data |= 1<<1;
    if(HD_ID_2)
        data |= 1<<2;
    if(HD_ID_3)
        data |= 1<<4;

    return data;
}




void key_init(void)
{
	//KEY，PA8
	GPIO_COMM_Init(RCC_APB2Periph_GPIOA, GPIOA, 
			GPIO_Pin_8, GPIO_Mode_IN_FLOATING, GPIO_Speed_50MHz);
}

//读取按键状态
//按键按下为低电平，抬起为高电平
uint8_t get_key_bit(uint8_t key)
{
	uint8_t ret = 0;
	if(key == KEY0_PRES)
	{
		ret = KEY0();
	}
	else
	{
		ret = 1;
	}
	return ret;
}


/*按键消抖函数
输入：key：按键编号；
	time_press：按键按下的延时（ms），按键连续按下的时间
	time_release：按键松开的延时（ms），按键松开到再次按下的时间间隔
	time_delay：按键延时（ms），第一次按键后延时时间，延时阶段可以多次按键，延时结束后判断按键次数
*/
void key_down(uint8_t key,uint32_t time_press, uint32_t time_release, uint32_t time_delay)
{
	switch(key_info[key-1].key_state) {
        case KEY_IDLE:
        if(0 == get_key_bit(key)){//有按键
			if(key_info[key-1].key_state_tmp == PRESS)
			{
				if(timeout_isOut(&key_info[key-1].tt_key_release))
				{
					key_info[key-1].key_state = FILTER;
					timeout_setValue(&key_info[key-1].tt_key_press,time_press,1);
				}
				else
				{
					key_info[key-1].key_state = PRESS;
				}
			}
			else
			{
				key_info[key-1].key_state = FILTER;
				timeout_setValue(&key_info[key-1].tt_key_press,time_press,1);
			}
			key_info[key-1].key_state_tmp = KEY_IDLE;
        }  
        break;

        case FILTER:            
        if(0 == get_key_bit(key)) {//判断是否为按键
			key_info[key-1].key_state_tmp = FILTER;

			if(timeout_isOut(&key_info[key-1].tt_key_press))	
			{//按键时间大于50ms。
                //按键按下后的任务处理
                if(key_info[key-1].flag==0)
                {
                    key_info[key-1].flag = 1;
                    timeout_setValue(&key_info[key-1].tt_key,time_delay,1);
                }
                key_info[key-1].pres_num++;
				key_info[key-1].pres_total_num++;
                printf("key:%d, key num:%d, key total num:%u\n",key,key_info[key-1].pres_num,key_info[key-1].pres_total_num);
                
                key_info[key-1].key_state = PRESS;
            }
        } else {//按键的去抖动
            key_info[key-1].key_state = KEY_IDLE; 
			key_info[key-1].key_state_tmp = FILTER;
        }
        break;

        case PRESS:         
        if(0 != get_key_bit(key)){ //key release  松手
            key_info[key-1].key_state = KEY_IDLE;
			timeout_setValue(&key_info[key-1].tt_key_release,time_release,1);
			key_info[key-1].key_state_tmp = PRESS;
        }          
        break;

        default:
        key_info[key-1].key_state = KEY_IDLE;
		key_info[key-1].key_state_tmp = RELEASE;
        break;
    }//end swtich;
}

//按键处理函数
void key_press(void)
{
	uint32_t time_press = 100;
	uint32_t time_release = 100;
	uint32_t time_delay = 5000;
	key_down(KEY0_PRES,time_press,time_release,time_delay);
    if(key_info[KEY0_PRES-1].flag)
    {
        if(timeout_isOut(&key_info[KEY0_PRES-1].tt_key))
        {
			if(device_fixed_info.Work_State == DEV_WORK_STATE_NORMAL || device_fixed_info.Work_State == DEV_WORK_STATE_UNINIT)
			{
				//正常模式或未配置模式下执行按键功能
				key_task_handle(key_info[KEY0_PRES-1].pres_num);
			}
            
			key_info[KEY0_PRES-1].flag = 0;
			key_info[KEY0_PRES-1].pres_num = 0;
        }
    }
}