/**
  @page PWR_PVD PWR_PVD example
  
  @verbatim
  *************** (C) COPYRIGHT 2020 - 2023 megawin Technology ***************
  * @file    PWR/PWR_PVD/readme.txt 
  * @author  megawin Application Team
  * @version V0.1.10
  * @date    05-January-2023
  * @brief   Description of the PWR PWR_PVD example.
  ******************************************************************************
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, MEGAWIN SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
  * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM
  * THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  ******************************************************************************
   @endverbatim

@par Example Description 

This example describes how to use the the programmable voltage detector (PVD) function.

In this example, Main clock is from PLL clock and it is configured at 72MHz. The PLL clock is based on 12MHz HSE. APB1 and APB2 clock is from Main clock.

In this example, EXTI line 16 is configured to generate an interrupt on each rising or falling edge of the PVD output signal.
In the PVD interrupt routine,it will toggled the LED2.


@par Directory contents 

  - PWR/PWR_PVD/PWR_PVD.uvprojx       MDK5 project file
  - PWR/PWR_PVD/PWR_PVD.uvoptx        MDK5 project options file
  - PWR/PWR_PVD/JLinkSettings.ini     Jlink settings file
  - PWR/PWR_PVD/main.c                Main program


@par Hardware and Software environment 

  - Hardware environment
    - HSE crystal is 12MHz
    - The chip pins are connected as follows：
      - PB14 pin is connected to LED1
      - PB13 pin is connected to LED2


@par How to use it ? 

In order to make the program work, you must do the following :
 - Open PWR_PVD.uvprojx from this example folder by Keil MDK5
 - Rebuild all files and load your image into target memory
 - Run the example 
   
 * <h3><center>&copy; COPYRIGHT 2020 - 2023 megawin Technology</center></h3>
 */
