init
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MobKBK
185
HARDWARE/key.c
Normal file
185
HARDWARE/key.c
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#include "key.h"
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/**************************************************************************
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Function: Key initialization
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Input : none
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Output : none
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函数功能：按键初始化
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入口参数：无
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返回 值：无
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**************************************************************************/
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void KEY_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE, ENABLE);//使能GPIOB时钟
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GPIO_InitStructure.GPIO_Pin = KEY_PIN; //KEY对应引脚
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;//普通输入模式
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100M
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
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GPIO_Init(GPIOE, &GPIO_InitStructure);//初始化GPIOB14
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}
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/**************************************************************************
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Function: Buttons to scan
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Input : none
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Output : none
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函数功能：按键扫描
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入口参数：无
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返回 值：按键状态 0：无动作 1：单击
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**************************************************************************/
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u8 click(void)
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{
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//Press the release sign
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//按键按松开标志
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static u8 flag_key=1;
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if(flag_key&&KEY==0)
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{
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flag_key=0; //The key is pressed //按键按下
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return 1;
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}
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else if(1==KEY)
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flag_key=1;
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return 0; //No key is pressed //无按键按下
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}
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/**************************************************************************
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Function: Delay function
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Input : none
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Output : none
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函数功能：延迟函数
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入口参数：无
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返 回 值：无
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**************************************************************************/
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void Delay_ms(void)
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{
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int ii,i;
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for(ii=0;ii<50;ii++)
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{
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for(i=0;i<50;i++);
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}
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}
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/**************************************************************************
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Function: Buttons to scan
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Input : Double click wait time
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Output : Button status: 0- no action, 1- click, 2- double click
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函数功能：按键扫描
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入口参数：双击等待时间
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返回 值：按键状态: 0-无动作, 1-单击, 2-双击
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**************************************************************************/
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u8 click_N_Double (u8 time)
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{
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static u8 flag_key,count_key,double_key;
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static u16 count_single,Forever_count;
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if(KEY==0) Forever_count++;
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else Forever_count=0;
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if(0==KEY&&0==flag_key) flag_key=1;
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if(0==count_key)
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{
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if(flag_key==1)
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{
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double_key++;
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count_key=1;
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}
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if(double_key==2)
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{
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double_key=0;
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count_single=0;
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return 2; //Double click //双击
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}
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}
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if(1==KEY) flag_key=0,count_key=0;
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if(1==double_key)
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{
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count_single++;
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if(count_single>time&&Forever_count<time)
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{
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double_key=0;
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count_single=0;
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return 1; //Click //单击
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}
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if(Forever_count>time)
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{
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double_key=0;
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count_single=0;
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}
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}
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return 0;
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}
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/**************************************************************************
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Function: Button scan.Because static variables are used, a function with a different name needs to be defined when the keystroke scan function is used multiple times
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Input : none
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Output : Button status: 0- no action, 1- click, 2- double click
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函数功能：按键扫描。因为使用到了静态变量，当多处需要使用按键扫描函数时，需要再定义一个不同名函数
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入口参数：无
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返 回 值：按键状态: 0-无动作, 1-单击, 2-双击
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**************************************************************************/
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u8 click_N_Double_MPU6050 (u8 time)
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{
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static u8 flag_key,count_key,double_key;
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static u16 count_single,Forever_count;
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if(KEY==0) Forever_count++;
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else Forever_count=0;
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if(0==KEY&&0==flag_key) flag_key=1;
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if(0==count_key)
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{
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if(flag_key==1)
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{
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double_key++;
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count_key=1;
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}
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if(double_key==2)
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{
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double_key=0;
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count_single=0;
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return 2; //Double click //双击
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}
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}
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if(1==KEY) flag_key=0,count_key=0;
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if(1==double_key)
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{
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count_single++;
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if(count_single>time&&Forever_count<time)
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{
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double_key=0;
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count_single=0;
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return 1; //Click //单击
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}
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if(Forever_count>time)
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{
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double_key=0;
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count_single=0;
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}
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}
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return 0;
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}
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/**************************************************************************
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Function: Long according to the test
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Input : none
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Output : Key state 0: no action 1: long press 3s
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函数功能：长按检测
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入口参数：无
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返回 值：按键状态 0：无动作 1：长按3s
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**************************************************************************/
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u8 Long_Press(void)
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{
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static u16 Long_Press_count,Long_Press;
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if(Long_Press==0&&KEY==0) Long_Press_count++;
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else Long_Press_count=0;
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if(Long_Press_count>15) //3 seconds //3秒
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{
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Long_Press=1;
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Long_Press_count=0;
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return 1;
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}
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if(Long_Press==1) //Long press position 1 //长按标志位置1
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{
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Long_Press=0;
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}
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return 0;
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}
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