N32G430的低功耗定时器问题。

void EncInputIoConfig(void)

{

    GPIO_InitType GPIO_InitStructure;

    GPIO_Structure_Initialize(&GPIO_InitStructure);

    /* Enable the GPIO Clock */

    RCC_AHB_Peripheral_Clock_Enable(RCC_AHB_PERIPH_GPIOB);



    /* Configure the GPIO pin */ 

    GPIO_InitStructure.Pin        = GPIO_PIN_5;

    GPIO_InitStructure.GPIO_Mode  = GPIO_MODE_INPUT;

    GPIO_InitStructure.GPIO_Alternate =  GPIO_AF3_LPTIM;

    GPIO_Peripheral_Initialize(GPIOB, &GPIO_InitStructure);

    /* Configure the GPIOpin */

    GPIO_InitStructure.Pin        = GPIO_PIN_7;

    GPIO_InitStructure.GPIO_Mode  = GPIO_MODE_INPUT;

    GPIO_InitStructure.GPIO_Alternate =  GPIO_AF6_LPTIM;

    GPIO_Peripheral_Initialize(GPIOB, &GPIO_InitStructure);

}

void LPTIMNVIC_Config(FunctionalState Cmd)

{

    EXTI_InitType EXTI_InitStructure;

    NVIC_InitType NVIC_InitStructure;



    EXTI_Flag_Status_Clear(EXTI_LINE20);

    EXTI_InitStructure.EXTI_Line = EXTI_LINE20;

#ifdef __TEST_SEVONPEND_WFE_NVIC_DIS__

    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;

#else

    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

#endif

    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;

    EXTI_InitStructure.EXTI_LineCmd = ENABLE;

    EXTI_Peripheral_Initializes(&EXTI_InitStructure);



    /* Enable the RTC Alarm Interrupt */

    NVIC_InitStructure.NVIC_IRQChannel                   = LPTIM_WKUP_IRQn;

    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = NVIC_PER_PRIORITY_1;

    NVIC_InitStructure.NVIC_IRQChannelSubPriority        = NVIC_SUB_PRIORITY_1;

    NVIC_InitStructure.NVIC_IRQChannelCmd                = Cmd;

    NVIC_Initializes(&NVIC_InitStructure);

}

void Lptim_EncInit(void)

{

    RCC_LPTIM_Enable();

    RCC_LSI_Enable();

    while(RCC_LSI_Stable_Wait() != SUCCESS);

    RCC_LPTIM_Clock_Config(RCC_LPTIMCLK_SRC_LSI);

        LPTIMNVIC_Config(ENABLE);

        

        LPTIM_Prescaler_Set(LPTIM,LPTIM_PRESCALER_DIV1);

    /* Config LPTIM */

        EncInputIoConfig();

        

    LPTIM_Clock_Source_Set(LPTIM,LPTIM_CLK_SOURCE_INTERNAL);

    LPTIM->CFG &=~(LPTIM_CFG_NENC|LPTIM_CFG_ENC);

    LPTIM_Encoder_Mode_Enable(LPTIM);

    /* ENC MODE1 */

    LPTIM_Encoder_Mode_Set(LPTIM,LPTIM_ENCODER_MODE_RISING_FALLING);



    LPTIM_ON(LPTIM);

    LPTIM_Auto_Reload_Set(LPTIM,65535);

    LPTIM_Compare_Set(LPTIM,10000);  

        LPTIM_Counter_Start(LPTIM,LPTIM_OPERATING_MODE_CONTINUOUS); 

        LPTIM_Interrupt_Enable(LPTIM,LPTIM_INT_ARRMIE);        

}

void LPTIM_WKUP_IRQHandler(void)

{

    if (LPTIM_Flag_Get(LPTIM, LPTIM_INTSTS_FLAG_ARRM) != RESET)

    {

        LPTIM_FLAG_Clear(LPTIM, LPTIM_INTSTS_FLAG_ARRM);

        EXTI_Flag_Status_Clear(EXTI_LINE20);

    }

}