void MiniBalance_EXTI_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);//΢ҿא׏ìѨҪʹŜAFIOʱד RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); //ʹŜGPIO׋ࠚʱד GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //׋ࠚƤ׃ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //ʏ-ˤɫ GPIO_Init(GPIOA, &GPIO_InitStructure); //ٹߝʨ֨ӎ˽ԵʼۯGPIO GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource12); EXTI_InitStructure.EXTI_Line=EXTI_Line12; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//ЂݵҘԥע EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); //ٹߝEXTI_InitStructאָ֨քӎ˽Եʼۯ΢ʨEXTI݄զǷ NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //ʹŜдݼ̹՚ք΢ҿא׏ͨր NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02; //ȀռԅЈܶ2ì NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01; //ؓԅЈܶ1 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ʹŜ΢ҿא׏ͨր NVIC_Init(&NVIC_InitStructure); }

这是一个用于初始化外部中断的函数，其中包括对GPIO和EXTI的初始化，以及对NVIC中断的配置。其中，GPIOA的Pin12被配置为输入上拉模式，EXTI线路12被配置为下降沿触发中断模式。NVIC中断通道被配置为EXTI15_10，优先级为0x02和0x01，使能EXTI15_10_IRQn通道中断。

相关问题

GPIO_InitTypeDef GPIO_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure;

这是一段基于STM32的代码，用于初始化GPIO和外部中断。

GPIO_InitTypeDef结构体定义了GPIO初始化的相关参数，如端口号、模式、速度、输出类型等。

EXTI_InitTypeDef结构体定义了外部中断初始化的相关参数，如中断线、触发方式等。

NVIC_InitTypeDef结构体定义了中断控制器初始化的相关参数，如中断通道、优先级等。

这些结构体都需要根据具体的硬件平台进行配置，以实现所需的功能。

在保持原来的代码逻辑的条件下，根据STM32F407的特性，把下面STM32F1的代码移植到STM32F407。void ExtiGpioInit(void) { GPIO_InitTypeDef GPIO_InitStruct; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5 ; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStruct); } void ExtiNvicInit(void) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn ; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void ExtiModeInit(void) { EXTI_InitTypeDef EXTI_InitStructure; GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource4); EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_Line = EXTI_Line4; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource5); EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_Line = EXTI_Line5; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); }

void ExtiGpioInit(void)
{
GPIO_InitTypeDef GPIO_InitStruct;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5 ;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &GPIO_InitStruct);

}

void ExtiNvicInit(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}

void ExtiModeInit(void)
{
EXTI_InitTypeDef EXTI_InitStructure;

SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource4);
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_Line = EXTI_Line4;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource5);
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_Line = EXTI_Line5;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
}