#include "stm32f10x.h"

uint16_t CountSensor_Count = 0;

void CountSensor_Init(void) {
    // 初始化Gpio口
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    // 初始化exit
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource14);
    EXTI_InitTypeDef EXTI_InitStructure;
    EXTI_InitStructure.EXTI_Line = EXTI_Line14;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
    EXTI_Init(&EXTI_InitStructure);

    // 初始化nvic
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
    NVIC_InitTypeDef NVIC_InitStructure;
    NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_Init(&NVIC_InitStructure);
}


void EXTI15_10_IRQHandler(void)  {
    if (EXTI_GetITStatus(EXTI_Line14) == SET) {
        CountSensor_Count++;
        EXTI_ClearITPendingBit(EXTI_Line14);
    }
}

uint16_t CountSensor_GetCount(void) {
    return CountSensor_Count;
}