#include "exti_key.h"
#include "../STM32_FWLIB/inc/stm32f10x_exti.h"
#include "../HardWare/include.h"
#include "./ch376s/HOST.H"

static void KEY_Init(void) //IO初始化
{ 
 	//定义初始化gpio的结构体
    GPIO_InitTypeDef GPIO_initstruct;

    //初始化端口时钟，使能POARTA & POARTC 的时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOC,ENABLE);

    //初始化按键 key0 PC1 上拉输入'
    GPIO_initstruct.GPIO_Speed=
    GPIO_Speed_2MHz;
    GPIO_initstruct.GPIO_Pin = GPIO_Pin_1;
    GPIO_initstruct.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOC,&GPIO_initstruct);

    //初始化按键 key1 PC13 上拉输入
    GPIO_initstruct.GPIO_Pin = GPIO_Pin_13;
    GPIO_Init(GPIOC,&GPIO_initstruct);

    //初始化按键 wk_up PA0 下拉输入
    GPIO_initstruct.GPIO_Mode = GPIO_Mode_IPD;
    GPIO_initstruct.GPIO_Pin = GPIO_Pin_0;
    GPIO_Init(GPIOA,&GPIO_initstruct);

}

void EXTIX_Key_Init(void)
{
 
 	EXTI_InitTypeDef EXTI_InitStructure;
 	NVIC_InitTypeDef NVIC_InitStructure;

    KEY_Init();	 //	按键端口 GPIO 初始化
  	RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);	//使能复用功能时钟

//---------------------------------------------------------------------------------------- 
 	//GPIOC.1	 key0  中断线以及中断初始化配置 下降沿触发 
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource1); 
	EXTI_InitStructure.EXTI_Line = EXTI_Line1;
  	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;	
  	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  	EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  	EXTI_Init(&EXTI_InitStructure);	 	//根据EXTI_InitStruct中指定的参数初始化外设EXTI寄存器

	//GPIOC.13	 key1  中断线以及中断初始化配置 下降沿触发 
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource13); 
	EXTI_InitStructure.EXTI_Line = EXTI_Line13;
	EXTI_Init(&EXTI_InitStructure);	 

    //GPIOA.0	 WK_UP 中断线以及中断初始化配置 上升沿触发 PA0 
 	GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0); 
  	EXTI_InitStructure.EXTI_Line = EXTI_Line0;
  	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
  	EXTI_Init(&EXTI_InitStructure);		//根据EXTI_InitStruct中指定的参数初始化外设EXTI寄存器
//----------------------------------------------------------------------------	  
	//GPIOC.1	 key0
  	NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;			//使能按键key0所在的外部中断通道
  	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;	//抢占优先级2， 
  	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03;					//子优先级3
  	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;								//使能外部中断通道
  	NVIC_Init(&NVIC_InitStructure); 
	//GPIOC.13	 key1  
	NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;			//使能按键key1所在的外部中断通道
  	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;	//抢占优先级2， 
  	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03;					//子优先级3
  	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;								//使能外部中断通道
  	NVIC_Init(&NVIC_InitStructure); 
	//GPIOA.0	 WK_UP
	NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;			//使能按键WK_UP所在的外部中断通道
  	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;	//抢占优先级2， 
  	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;					//子优先级3
  	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;								//使能外部中断通道
  	NVIC_Init(&NVIC_InitStructure); 

  	printf("按键中断初始化成功！\r\n");
}

//外部中断 1 服务程序 按键 key0
void EXTI1_IRQHandler(void)
{
	delay_ms(20);//消抖
	if(KEY0==0)	  //按键KEY2
	{
		led0 = !led0;
		printf("按键 key0 被按下。\r\n");
	}		 
	EXTI_ClearITPendingBit(EXTI_Line1);  //清除LINE1上的中断标志位  
}

//外部中断 13 服务程序 按键 key1
void EXTI15_10_IRQHandler(void)
{
	if(EXTI_GetITStatus(EXTI_Line13))
	{
		delay_ms(20);
		if(KEY1==0)
		{
			led1 = !led1;
			printf("按键 KEY1 被按下。\r\n");
		}
		EXTI_ClearITPendingBit(EXTI_Line13); //清除LINE13上的中断标志位  
	}
}

//外部中断 0 服务程序 按键WK_UP
void EXTI0_IRQHandler(void)
{
	delay_ms(5);//消抖
	if(WK_UP==1)	 	 //WK_UP按键
	{				
		SafeRemoveDisk();
		printf("按键 WK_UP 被按下。\r\n");
	}
	EXTI_ClearITPendingBit(EXTI_Line0); //清除LINE0上的中断标志位  
}