116 lines
4.1 KiB
C
116 lines
4.1 KiB
C
#include "pvd.h"
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#include "sysport.h"
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#include "stm32f10x_pwr.h"
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#include "stm32f10x_bkp.h"
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/********************************************************************************
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* @file pvd.c
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* @author 晏诚科技 Mr.Wang
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* @version V1.0.0
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* @date 11-Dec-2018
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* @brief pvd相关驱动
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******************************************************************************
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*******************************************************************************/
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/*****************************************
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*供内部使用的常变量
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****************************************/
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/**************************************************************************************************
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* 名 称： void Delay_Us(u32 nus)
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* 功 能： 延时nus
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* 入口参数：
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* @param nus 要延时的us数，没有系统调度
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* 说 明： nus:0~59652323(最大值即2^32/fac_us@fac_us=72) 59652323
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*************************************************************************************************/
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void Pvd_Init( EXTITrigger_TypeDef exitTrigger, IntPriority_e ePriority)
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{
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/*开启EXIT功能需要 开启AFIO时钟且初始化 EXIT和NVIC*/
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EXTI_InitTypeDef EXTI_InitStructure ; //EXIT参数 结构体定义
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NVIC_InitTypeDef NVIC_InitStructure ; //NVIC参数 结构体定义
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //GPIO EXIT功能需要开启AFIO时钟
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EXTI_InitStructure.EXTI_Line = EXTI_Line16 ; //中断引脚
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt ; //中断模式
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EXTI_InitStructure.EXTI_Trigger = exitTrigger ; //IO外部中断触发方式
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init( &EXTI_InitStructure );
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/*清中断标志位后再开中断*/
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EXTI_ClearITPendingBit( EXTI_Line16);
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NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn ;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ePriority ; //抢占优先级配置
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0 ; //freertos无子优先级
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NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE ; //失能外部中断通道
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NVIC_Init(&NVIC_InitStructure); //中断NVIC配置
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NVIC_EnableIRQ(PVD_IRQn) ;
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PWR_PVDLevelConfig(PWR_PVDLevel_2V8) ;
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PWR_PVDCmd(ENABLE) ;
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}
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//void PVD_IRQHandler(void)
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//{
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//if( EXTI_GetFlagStatus(EXTI_Line16) != RESET )
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// {
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// EXTI_ClearITPendingBit(EXTI_Line16);
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// WriteLogToFlash("Pvd Irq!") ;
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// SysErr("Pvd Irq!") ;
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// }
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//}
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void PWR_PVD_Init(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);//使能PWR时钟
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NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn; //使能PVD所在的外部中断通道
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;//抢占优先级1
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级0
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道
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NVIC_Init(&NVIC_InitStructure); EXTI_StructInit(&EXTI_InitStructure);
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EXTI_InitStructure.EXTI_Line = EXTI_Line16; //PVD连接到中断线16上
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //使用中断模式
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //电压低于阀值时产生中断
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EXTI_InitStructure.EXTI_LineCmd = ENABLE; //使能中断线
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EXTI_Init(&EXTI_InitStructure); //初始
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PWR_PVDLevelConfig(PWR_PVDLevel_2V8);//设定监控阀值
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PWR_PVDCmd(ENABLE);//使能PVD
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}
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u16 num = 0 ;
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void PVD_IRQHandler(void)
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{
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EXTI_ClearITPendingBit(EXTI_Line16);//清中断
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// num = BKP_ReadBackupRegister(BKP_DR10);
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// num++; //用户添加紧急处理代码处
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// RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);//使能PWR和BKP外设时钟
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// PWR_BackupAccessCmd(ENABLE);//使能后备寄存器访问
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// BKP_WriteBackupRegister(BKP_DR1, num);//启动界面
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}
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//uint16_t power_time = 0 ;
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//void PVD_IRQHandler(void)
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//{
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// EXTI_ClearITPendingBit(EXTI_Line16);//清中断
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// RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR , ENABLE);//使能PWR和BKP外设时钟
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// PWR_BackupAccessCmd(ENABLE); //使能后备寄存器访问
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// while(1)
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// {
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// power_time++;
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// BKP_WriteBackupRegister(BKP_DR14, power_time) ;
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// }
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//}
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