stm32f103总是自动触发中断，求高手指点

maidouzhu · 发表于 2019-7-9 10:25

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#define KEY0_INT_GPIO_PORT       GPIOC
#define KEY0_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY0_INT_GPIO_PIN       GPIO_Pin_0
#define KEY0_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY0_INT_EXTI_PINSOURCE GPIO_PinSource0
#define KEY0_INT_EXTI_LINE       EXTI_Line0
#define KEY0_INT_EXTI_IRQ       EXTI0_IRQn
#define KEY0_IRQHandler          EXTI0_IRQHandler

#define KEY1_INT_GPIO_PORT       GPIOC
#define KEY1_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY1_INT_GPIO_PIN       GPIO_Pin_1
#define KEY1_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY1_INT_EXTI_PINSOURCE GPIO_PinSource1
#define KEY1_INT_EXTI_LINE       EXTI_Line1
#define KEY1_INT_EXTI_IRQ       EXTI1_IRQn
#define KEY1_IRQHandler          EXTI1_IRQHandler

#define KEY2_INT_GPIO_PORT       GPIOC
#define KEY2_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY2_INT_GPIO_PIN       GPIO_Pin_2
#define KEY2_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY2_INT_EXTI_PINSOURCE GPIO_PinSource2
#define KEY2_INT_EXTI_LINE       EXTI_Line2
#define KEY2_INT_EXTI_IRQ       EXTI2_IRQn
#define KEY2_IRQHandler          EXTI2_IRQHandler

#define KEY3_INT_GPIO_PORT       GPIOC
#define KEY3_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY3_INT_GPIO_PIN       GPIO_Pin_3
#define KEY3_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY3_INT_EXTI_PINSOURCE GPIO_PinSource3
#define KEY3_INT_EXTI_LINE       EXTI_Line3
#define KEY3_INT_EXTI_IRQ       EXTI3_IRQn
#define KEY3_IRQHandler          EXTI3_IRQHandler

#define KEY4_INT_GPIO_PORT       GPIOC
#define KEY4_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY4_INT_GPIO_PIN       GPIO_Pin_4
#define KEY4_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY4_INT_EXTI_PINSOURCE GPIO_PinSource4
#define KEY4_INT_EXTI_LINE       EXTI_Line4
#define KEY4_INT_EXTI_IRQ       EXTI4_IRQn
#define KEY4_IRQHandler          EXTI4_IRQHandler

#define KEY5_INT_GPIO_PORT       GPIOC
#define KEY5_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY5_INT_GPIO_PIN       GPIO_Pin_5
#define KEY5_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY5_INT_EXTI_PINSOURCE GPIO_PinSource5
#define KEY5_INT_EXTI_LINE       EXTI_Line5
#define KEY5_INT_EXTI_IRQ       EXTI9_5_IRQn
#define KEY5_IRQHandler          EXTI9_5_IRQHandler

#define KEY6_INT_GPIO_PORT       GPIOB
#define KEY6_INT_GPIO_CLK       (RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO)
#define KEY6_INT_GPIO_PIN       GPIO_Pin_15
#define KEY6_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOB
#define KEY6_INT_EXTI_PINSOURCE GPIO_PinSource15
#define KEY6_INT_EXTI_LINE       EXTI_Line15
#define KEY6_INT_EXTI_IRQ       EXTI15_10_IRQn
#define KEY6_IRQHandler          EXTI15_10_IRQHandler

#define KEY7_INT_GPIO_PORT       GPIOC
#define KEY7_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY7_INT_GPIO_PIN       GPIO_Pin_6
#define KEY7_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY7_INT_EXTI_PINSOURCE GPIO_PinSource6
#define KEY7_INT_EXTI_LINE       EXTI_Line6
#define KEY7_INT_EXTI_IRQ       EXTI9_5_IRQn
#define KEY7_IRQHandler          EXTI9_5_IRQHandler

#define KEY8_INT_GPIO_PORT       GPIOC
#define KEY8_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY8_INT_GPIO_PIN       GPIO_Pin_7
#define KEY8_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY8_INT_EXTI_PINSOURCE GPIO_PinSource7
#define KEY8_INT_EXTI_LINE       EXTI_Line7
#define KEY8_INT_EXTI_IRQ       EXTI9_5_IRQn
#define KEY8_IRQHandler          EXTI9_5_IRQHandler

#define KEY9_INT_GPIO_PORT       GPIOC
#define KEY9_INT_GPIO_CLK       (RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO)
#define KEY9_INT_GPIO_PIN       GPIO_Pin_8
#define KEY9_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOC
#define KEY9_INT_EXTI_PINSOURCE GPIO_PinSource8
#define KEY9_INT_EXTI_LINE       EXTI_Line8
#define KEY9_INT_EXTI_IRQ       EXTI9_5_IRQn
#define KEY9_IRQHandler          EXTI9_5_IRQHandler

#define KEY10_INT_GPIO_PORT       GPIOA
#define KEY10_INT_GPIO_CLK       (RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO)
#define KEY10_INT_GPIO_PIN       GPIO_Pin_11
#define KEY10_INT_EXTI_PORTSOURCE GPIO_PortSourceGPIOA
#define KEY10_INT_EXTI_PINSOURCE GPIO_PinSource11
#define KEY10_INT_EXTI_LINE       EXTI_Line11
#define KEY10_INT_EXTI_IRQ       EXTI15_10_IRQn
#define KEY10_IRQHandler          EXTI15_10_IRQHandler

static void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* 配置NVIC为优先级组1 */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  /* 配置中断源：按键1 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY0_INT_EXTI_IRQ;
  /* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* 配置中断源：按键2，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY1_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

maidouzhu · 发表于 2019-7-9 10:26

static void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* 配置NVIC为优先级组1 */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  /* 配置中断源：按键1 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY0_INT_EXTI_IRQ;
  /* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* 配置中断源：按键2，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY1_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

   /* 配置中断源：按键3，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY2_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

/* 配置中断源：按键4，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY3_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

   /* 配置中断源：按键5，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY4_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 4;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

   /* 配置中断源：按键6,8,9,10，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY5_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 5;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

   /* 配置中断源：按键7,11，其他使用上面相关配置 */
  NVIC_InitStructure.NVIC_IRQChannel = KEY6_INT_EXTI_IRQ;
/* 配置抢占优先级 */
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  /* 配置子优先级 */
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 6;
  /* 使能中断通道 */
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

}

/**
  * @brief  配置 IO为EXTI中断口，并设置中断优先级
  * @param  无
  * @retval 无
  */
void EXTI_Key_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;

/*开启按键GPIO口的时钟*/
RCC_APB2PeriphClockCmd(KEY0_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY1_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY2_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY3_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY4_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY5_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY6_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY7_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY8_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY9_INT_GPIO_CLK,ENABLE);
RCC_APB2PeriphClockCmd(KEY10_INT_GPIO_CLK,ENABLE);
/* 配置 NVIC 中断*/
NVIC_Configuration();

/*--------------------------KEY0配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY0_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;;
  GPIO_Init(KEY0_INT_GPIO_PORT, &GPIO_InitStructure);

/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY0_INT_EXTI_PORTSOURCE, KEY0_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY0_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
/*--------------------------KEY1配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY1_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(KEY1_INT_GPIO_PORT, &GPIO_InitStructure);

/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY1_INT_EXTI_PORTSOURCE, KEY1_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY1_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 上升沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /*--------------------------KEY2配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY2_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY2_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY2_INT_EXTI_PORTSOURCE, KEY2_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY2_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

/*--------------------------KEY3配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY3_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY3_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY3_INT_EXTI_PORTSOURCE, KEY3_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY3_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

//--------------------------KEY4配置-----------------------------
// 选择按键用到的GPIO
  GPIO_InitStructure.GPIO_Pin = KEY4_INT_GPIO_PIN;
  // 配置为浮空输入
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(KEY4_INT_GPIO_PORT, &GPIO_InitStructure);
// 选择EXTI的信号源
  GPIO_EXTILineConfig(KEY4_INT_EXTI_PORTSOURCE, KEY4_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY4_INT_EXTI_LINE;

// EXTI为中断模式
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
// 下降沿中断
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  // 使能中断
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

//--------------------------KEY5配置-----------------------------
// 选择按键用到的GPIO
  GPIO_InitStructure.GPIO_Pin = KEY5_INT_GPIO_PIN;
  // 配置为浮空输入
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(KEY5_INT_GPIO_PORT, &GPIO_InitStructure);
//选择EXTI的信号源
  GPIO_EXTILineConfig(KEY5_INT_EXTI_PORTSOURCE, KEY5_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY5_INT_EXTI_LINE;

// EXTI为中断模式
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
// 下降沿中断
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  // 使能中断
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

/*--------------------------KEY6配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY6_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY6_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY6_INT_EXTI_PORTSOURCE, KEY6_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY6_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

/*--------------------------KEY7配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY7_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY7_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY7_INT_EXTI_PORTSOURCE, KEY7_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY7_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

/*--------------------------KEY8配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY8_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY8_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY8_INT_EXTI_PORTSOURCE, KEY8_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY8_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

/*--------------------------KEY9配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY9_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY9_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY9_INT_EXTI_PORTSOURCE, KEY9_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY9_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

/*--------------------------KEY10配置-----------------------------*/
/* 选择按键用到的GPIO */
  GPIO_InitStructure.GPIO_Pin = KEY10_INT_GPIO_PIN;
  /* 配置为浮空输入 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(KEY10_INT_GPIO_PORT, &GPIO_InitStructure);
/* 选择EXTI的信号源 */
  GPIO_EXTILineConfig(KEY10_INT_EXTI_PORTSOURCE, KEY10_INT_EXTI_PINSOURCE);
  EXTI_InitStructure.EXTI_Line = KEY10_INT_EXTI_LINE;

/* EXTI为中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
/* 下降沿中断 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
}

void KEY0_IRQHandler(void)
{
if(EXTI_GetITStatus(KEY0_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY0==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=0;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY0_INT_EXTI_LINE); //清除 LINE0上的中断标志位
}
}

void KEY1_IRQHandler(void)
{
if(EXTI_GetITStatus(KEY1_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY1==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=1;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY1_INT_EXTI_LINE); //清除 LINE1上的中断标志位
}
}

void KEY2_IRQHandler(void)
{
if(EXTI_GetITStatus(KEY2_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY2==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=2;
chargetime=0;
   keyflag=0;
}
EXTI_ClearITPendingBit(KEY2_INT_EXTI_LINE); //清除 LINE2上的中断标志位
}
}

void KEY3_IRQHandler(void)
{
if(EXTI_GetITStatus(KEY3_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY3==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=3;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY3_INT_EXTI_LINE); //清除 LINE3上的中断标志位
}
}

void KEY4_IRQHandler(void)
{
if(EXTI_GetITStatus(KEY4_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY4==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=4;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY4_INT_EXTI_LINE); //清除 LINE4上的中断标志位
}
}

void KEY5_IRQHandler(void)
{
if(EXTI_GetITStatus(KEY5_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY5==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=5;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY5_INT_EXTI_LINE); //清除 LINE5上的中断标志位
}

if(EXTI_GetITStatus(KEY7_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY7==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=7;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY7_INT_EXTI_LINE); //清除 LINE7上的中断标志位
}
if(EXTI_GetITStatus(KEY8_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY8==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=8;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY8_INT_EXTI_LINE); //清除 LINE8上的中断标志位
}

if(EXTI_GetITStatus(KEY9_INT_EXTI_LINE)!=RESET)//判断某个线上的中断是否发生
{
delay_ms(20);
if(KEY9==0)
{
Bee_1();
delay_ms(100);
Bee_0();
relay_flag=9;
chargetime=0;
keyflag=0;
}
EXTI_ClearITPendingBit(KEY9_INT_EXTI_LINE); //清除 LINE9上的中断标志位
}
}