rgv-kinco/applications/pvd.c

/*
* @Description: PVD监控系统初始化,不开启中断，PVD级别5，阈值为2.8V，VDD电压低于2.8V时产生PVD标志
在线程中每隔50ms判断一次标志，若为1，清标志，持续400ms为1，则延迟2s，重启芯片
 * @version: 
 * @Author: Joe
 * @Date: 2021-11-13 13:23:14
 * @LastEditTime: 2021-11-13 18:30:31
 */



#include "pvd.h"
#include "iocfg.h"

#define DBG_TAG                        "pvd"
#define DBG_LVL                        DBG_INFO
#include <rtdbg.h>

static	rt_thread_t	pvd_thread	= RT_NULL;	
static uint16_t PWR_FLAG = 0;
#define LED_RUN_PIN    	GET_PIN(B, 9)
#define ledrun_off()    rt_pin_write(LED_RUN_PIN, PIN_HIGH);
#define ledrun_on()    	rt_pin_write(LED_RUN_PIN, PIN_LOW);

/**
  * @brief  This function handles the PVD Output interrupt request.
  * @param  None
  * @retval None
  */
void PVD_IRQHandler(void)
{
  HAL_PWR_PVD_IRQHandler();
}
void HAL_PWR_PVDCallback(void)
{
	PWR_FLAG = 1;
}

/**
  * @brief  配置PVD.
  * @param  None
  * @retval None
  */
static void PVD_Config(void)
{
	PWR_PVDTypeDef sConfigPVD;
	
	/*使能 PWR 时钟 */
	__PWR_CLK_ENABLE();
	/* 配置 PVD 中断 */
	/*中断设置，抢占优先级0，子优先级为0*/
	HAL_NVIC_SetPriority(PVD_IRQn, 0 ,0);
	HAL_NVIC_EnableIRQ(PVD_IRQn);  

	/* 配置PVD级别3 (具体数据
	   可查询数据手册获知) 具体级别根据自己的
	   实际应用要求配置*/
	sConfigPVD.PVDLevel = PWR_PVDLEVEL_3;	//2.4V
	sConfigPVD.Mode = PWR_PVD_MODE_IT_RISING_FALLING;
	HAL_PWR_ConfigPVD(&sConfigPVD);
	/* 使能PVD输出 */
	HAL_PWR_EnablePVD();
}
static void pvd_thread_entry(void* parameter)
{
    PVD_Config();
	while(1)
	{
		if(PWR_FLAG)
		{
			PWR_FLAG = 0;			
			LOG_E("mcu power low,2.5s later reboot");
			rt_thread_mdelay(2500);	
			rt_hw_cpu_reset();
		}
		rt_thread_mdelay(50);
	}
	
}


/****************************************
 *        pvd_init
*函数功能 : 配置初始化
 *参数描述 : 无
 *返回值   : 无
 ****************************************/
int pvd_init(void)
{    
	pvd_thread =                         
	rt_thread_create( "pvd_thread",              
				  pvd_thread_entry,  	   
				  RT_NULL,             		   
				  4096,                		  
				  28,                 		  
				  20);               		  
	if (pvd_thread != RT_NULL)
	{
		rt_thread_startup(pvd_thread);
		LOG_I(" pvd_thread create..");
	}
    return RT_EOK;
}
INIT_APP_EXPORT(pvd_init);