void pixelC_HW_flagLight_Init(void)
{
RCC->APB2ENR|=1<<2;
#if FLAGLIGHT_Pin/8
FLAGLIGHT_GPIOx->CRH&=~((u32)0xf<<((FLAGLIGHT_Pin%8)*4));
FLAGLIGHT_GPIOx->CRH|=(u32)0x3<<((FLAGLIGHT_Pin%8)*4);
#else
FLAGLIGHT_GPIOx->CRL&=~((u32)0xf<<((FLAGLIGHT_Pin%8)*4));
FLAGLIGHT_GPIOx->CRL|=(u32)0x3<<((FLAGLIGHT_Pin%8)*4);
#endif
PAout(8)=1;
}
int main()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
//初始化管脚
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); //选择中断优先级分组，此处选择0。使0级抢占式优先级，16级亚优先级
NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn; //相应的通道配置，此处选择中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占式优先级配置
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //亚优先级配置
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //时能通道
NVIC_Init(&NVIC_InitStructure); //使用结构体完成配置
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
PAout(9)=1;
//初始化PA09输出高电平,灭灯
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD,&GPIO_InitStructure);
//初始化PD02输入,浮空
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource2);
//配置中断源
EXTI_DeInit();
EXTI_InitTypeDef EXTI_InitStructure;
EXTI_InitStructure.EXTI_Line = EXTI_Line2;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
//配置中断下降沿触发
while(1)
{
delay(500);
}
return 0;
}
void usb_port_set(u8 enable)
{
uint16_t value;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
if(enable)
{
value = _GetCNTR()&(~(1<<1));
_SetCNTR(value);
}
else
{
value = _GetCNTR()|((1<<1));
_SetCNTR(value);
GPIOA->CRH&=0XFFF00FFF;
GPIOA->CRH|=0X00033000;
PAout(12)=0;
}
}
void EXTI2_IRQHandler(void)
{
PAout(9)=!PAout(9);
EXTI_ClearITPendingBit(EXTI_Line2);
}
void EXTI0_IRQHandler(void)
{
PAout(9)=!PAout(9);
// delay(10);
EXTI_ClearITPendingBit(EXTI_Line2);
}
void pixelC_HW_flagLight_Off(void)
{
PAout(8)=1;
}
void pixelC_HW_flagLight_On(void)
{
PAout(8)=0;
}