/**
  ******************************************************************************
  * @file    main.c
  * @author  MCU Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
PWR_PVDTypeDef sConfigPVD;

/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void APP_SystemClockConfig(void);

/**
  * @brief  Main program.
  * @retval int
  */
int main(void)
{
  /* Reset of all peripherals, Initializes the Systick */
  HAL_Init();
  
  /* System clock configuration PVD Need to Enable LSI */
  APP_SystemClockConfig(); 
    
  /* Initialize LED */
  BSP_LED_Init(LED_GREEN);
  
  sConfigPVD.Mode=PWR_PVD_MODE_IT_RISING_FALLING;       /* PVD mode: Rising and Falling edge trigger */
  sConfigPVD.PVDFilter=PWR_PVD_FILTER_NONE;             /* PVD filter disabled */
  sConfigPVD.PVDLevel=PWR_PVDLEVEL_6;                   /* PVD voltage level: 3.0V */
  /* Configure PVD */
  HAL_PWR_ConfigPVD(&sConfigPVD);

  HAL_NVIC_SetPriority(PVD_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(PVD_IRQn);
  
  /* Enable PVD */
  HAL_PWR_EnablePVD();

  while (1)
  {
  }
}

/**
  * @brief  PVD callback function
  * @param  None
  * @retval None
  */
void HAL_PWR_PVDCallback(void)
{
  if (__HAL_PWR_GET_FLAG(PWR_CSR_PVDO))
  {
    BSP_LED_On(LED_GREEN);
  }
  else
  {
    BSP_LED_Off(LED_GREEN);
  }
}

/**
  * @brief  System clock configuration function
  * @param  None
  * @retval None
  */
static void APP_SystemClockConfig(void)
{
  RCC_OscInitTypeDef  OscInitstruct = {0};
  RCC_ClkInitTypeDef  ClkInitstruct = {0};
  
  OscInitstruct.OscillatorType  = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSE | 
                                  RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_HSI48M;
  OscInitstruct.HSEState        = RCC_HSE_OFF;                              /* Disable HSE */
/* OscInitstruct.HSEFreq         = RCC_HSE_16_32MHz; */                     /* HSE working frequency range: 16M~32M */
  OscInitstruct.HSI48MState     = RCC_HSI48M_OFF;                           /* Disable HSI48M */
  OscInitstruct.HSIState        = RCC_HSI_ON;                               /* Enable HSI */
  OscInitstruct.LSEState        = RCC_LSE_OFF;                              /* Disable LSE */
/* OscInitstruct.LSEDriver       = RCC_LSEDRIVE_HIGH; */                    /* Drive capability level: High */
  OscInitstruct.LSIState        = RCC_LSI_ON;                               /* Enable LSI */
  OscInitstruct.PLL.PLLState    = RCC_PLL_OFF;                              /* Disable PLL */
/*  OscInitstruct.PLL.PLLSource   = RCC_PLLSOURCE_HSE; */                   /* PLL clock source: HSE */
/*  OscInitstruct.PLL.PLLMUL      = RCC_PLL_MUL6; */                        /* PLL multiplication factor: 6 */
  /* Configure Oscillators */
  if(HAL_RCC_OscConfig(&OscInitstruct) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  ClkInitstruct.ClockType       = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
  ClkInitstruct.SYSCLKSource    = RCC_SYSCLKSOURCE_HSI;                 /* System clock source: HSI */
  ClkInitstruct.AHBCLKDivider   = RCC_SYSCLK_DIV1;                      /* AHB clock not divided */
  ClkInitstruct.APB1CLKDivider  = RCC_HCLK_DIV1;                        /* APB1 clock not divided */
  ClkInitstruct.APB2CLKDivider  = RCC_HCLK_DIV2;                        /* APB2 clock divided by 2 */
  /* Configure Clocks */
  if(HAL_RCC_ClockConfig(&ClkInitstruct, FLASH_LATENCY_0) != HAL_OK)
  {
    APP_ErrorHandler();
  }
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void APP_ErrorHandler(void)
{
  /* Infinite loop */
  while (1)
  {
  }
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file：pointer to the source file name
  * @param  line：assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* User can add his own implementation to report the file name and line number,
     for example: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* Infinite loop */
  while (1)
  {
  }
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT Puya *****END OF FILE******************/