59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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#include "stm32l4xx_ll_pwr.h"
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#include "stm32l4xx_ll_bus.h"
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#include "stm32l4xx_ll_exti.h"
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#include "stm32l4xx_ll_system.h"
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#include "bsp.h"
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#define EXIT_LINE LL_EXTI_LINE_16
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pvd_irq_handle_cb pvd_irq_handle_cb_func = NULL;
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/**
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* @brief 配置PVD（电源电压检测）
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*
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* 根据给定的电源电压等级配置PVD（电源电压检测）。
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*
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* @param pwr_level 电源电压等级
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* @param call PVD中断处理回调函数
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*/
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void pvd_configuration(uint32_t pwr_level, pvd_irq_handle_cb call)
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{
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pvd_irq_handle_cb_func = call;
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// 启用电源时钟
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
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// 设置PVD电平阈值，例如设置为2.2V LL_PWR_PVDLEVEL_1
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LL_PWR_SetPVDLevel(pwr_level);
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// 启用PVD
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LL_PWR_EnablePVD();
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// 配置PVD中断
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LL_EXTI_EnableIT_0_31(EXIT_LINE); // PVD连接到EXTI Line
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LL_EXTI_EnableRisingTrig_0_31(EXIT_LINE);
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LL_EXTI_EnableFallingTrig_0_31(EXIT_LINE);
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// 启用PVD中断向量
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NVIC_EnableIRQ(PVD_PVM_IRQn);
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NVIC_SetPriority(PVD_PVM_IRQn, 0);
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}
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/**
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* @brief 处理PVD中断
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*
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* 当PVD中断触发时，该函数将被调用以处理中断事件。
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*
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* @note 无返回值
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*/
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void pvd_irq_handle(void)
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{
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if (LL_EXTI_IsActiveFlag_0_31(EXIT_LINE))
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{
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LL_EXTI_ClearFlag_0_31(EXIT_LINE);
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if (pvd_irq_handle_cb_func != NULL)
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{
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pvd_irq_handle_cb_func();
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}
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}
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}
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