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stm32的可编程电压检测PVD

2019-07-14 00:15发布

站内文章 / 电源技术
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配置PVD的顺序如： 注意一般使能PVD在系统初始化完毕开启。 /** * @brief Configures EXTI Lines. * @param None * @retval None */ static void EXTI_Configuration(void) { EXTI_InitTypeDef EXTI_InitStructure; /* Configure EXTI Line16(PVD Output) to generate an interrupt on rising and falling edges */ EXTI_ClearITPendingBit(EXTI_Line16); EXTI_InitStructure.EXTI_Line = EXTI_Line16; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); } /** * @brief Configures NVIC and Vector Table base location. * @param None * @retval None */ static void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* Configure one bit for preemption priority */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); /* Enable the PVD Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } static void RCC_Configuration(void) { RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); } void my_PVD_Configuration(void) { RCC_Configuration(); EXTI_Configuration(); NVIC_Configuration(); PWR_PVDLevelConfig(PWR_PVDLevel_2V4); //PWR_PVDCmd(ENABLE); //PVD使能的一般是在系统初始化完毕后开启 }

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