/*
 * @Author: your name
 * @Date: 2022-04-17 21:03:46
 * @LastEditTime: 2022-04-19 23:32:17
 * @LastEditors: Please set LastEditors
 * @Description: 打开koroFileHeader查看配置 进行设置: https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
 * @FilePath: \undefinede:\项目\兼职项目\MotorPid\stm32\HARDWARE\KEY\key.c
 */
#include "stm32f10x.h"
#include "key.h"
#include "sys.h" 
#include "delay.h"
//////////////////////////////////////////////////////////////////////////////////	 
//������ֻ��ѧϰʹ�ã�δ���������ɣ��������������κ���;
//ALIENTEK��ӢSTM32������
//������������	   
//����ԭ��@ALIENTEK
//������̳:www.openedv.com
//�޸�����:2012/9/3
//�汾��V1.0
//��Ȩ���У�����ؾ���
//Copyright(C) �������������ӿƼ����޹�˾ 2009-2019
//All rights reserved									  
//////////////////////////////////////////////////////////////////////////////////  
								    
//������ʼ������
void KEY_Init(void) //IO��ʼ��
{ 
 	GPIO_InitTypeDef GPIO_InitStructure;
 
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOB,ENABLE);//ʹ��PORTA,PORTEʱ��

	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //����������
	GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
}

//������������
//���ذ���ֵ
//mode:0,��֧��������;1,֧��������;
//0��û���κΰ�������
//1��KEY0����
//2��KEY1����
//3��KEY3���� WK_UP
//ע��˺�������Ӧ���ȼ�,KEY0>KEY1>KEY_UP!!
u8 KEY_Scan(u8 mode)
{	 
	static u8 key_up=1;//�������ɿ���־
	if(mode)key_up=1;  //֧������		  
	if(key_up&&(KEY0==0 || KEY1==0 || KEY2==0 ||WK_UP==0))
	{
		delay_ms(10);//ȥ���� 
		key_up=0;
		if(KEY0==0)return KEY0_PRES;
		else if(KEY1==0)return KEY1_PRES;
		else if(WK_UP==0)return WKUP_PRES;
		else if(KEY2 == 0)return KEY2_PRES;
	}else if(KEY0==1&&KEY1==1&&WK_UP==1&&KEY2==1)key_up=1; 	    
 	return 0;// �ް�������
}