//普通管脚初始化

/*****************************************************************************
STM32F0
******************************************************************************/
void BELL_Init(void)
{

GPIO_InitTypeDef GPIO_InitStruct;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_Level_2;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_ResetBits(GPIOA, GPIO_Pin_2);
}

/*stm32f4*/
void BEEP_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF, ENABLE);//ʹÄÜGPIOFʱÖÓ
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//ÆÕͨÊä³öģʽ
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;//ÏÂÀ­
GPIO_Init(GPIOF, &GPIO_InitStructure);//³õʼ»¯GPIO

GPIO_ResetBits(GPIOF,GPIO_Pin_8); //·äÃùÆ÷¶ÔÓ¦Òý½ÅGPIOF8À­µÍ£¬
}

//中断管脚初始化

//F0

NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; 
NVIC_InitStructure.NVIC_IRQChannelPriority=0x00; 
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

//F4

NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; 
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x01; 
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x03; 
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);