/**
  ******************************************************************************
  * @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"
#include "py32f420_ll_epwm.h"

/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* 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();
  
  /* Configure system clock */
  APP_SystemClockConfig(); 
  
  /* Configure LED2 GPIO */
  BSP_LED_Init(LED2);
  
  /* Enable EPWM peripheral clock */
  __HAL_RCC_EPWM_CLK_ENABLE();
  while(!__HAL_RCC_GET_FLAG(RCC_FLAG_EPWM_PRST));
  while(!__HAL_RCC_GET_FLAG(RCC_FLAG_EPWM_SFTRST));
  /* Enable EPWMs TBCTR clock */
  __HAL_RCC_EPWM_TIME_BASE_SYNC_ENABLE();
  
  /* Unlocks all EPWM common register and part of EPWMx register */
  LL_EPWM_EALLOW(EPWMC);
  
  /* Set interrupt source */
  LL_EPWM_ET_SetInterruptSource(EPWM1, LL_EPWM_INT_CNTR_PERIOD);
  /* Sets the EPWM interrupt event counts */
  LL_EPWM_ET_SetInterruptEventCount(EPWM1, 0x2);
  LL_EPWM_ET_EnableInterrupt(EPWM1);
  
  /* Enable EPWM interrupt */
  NVIC_EnableIRQ(EPWM1_IRQn);
  
  /* Time Base configuration */
  LL_EPWM_InitTypeDef EPWM1CountInit = {0};
  
  EPWM1CountInit.Prescaler            = LL_EPWM_CLOCK_DIVIDER_1;    /* Prescaler: 1           */
  EPWM1CountInit.HighSpeedPrescaler   = LL_EPWM_HSCLOCK_DIVIDER_1;  /* HighSpeedPrescaler:1   */
  EPWM1CountInit.Autoreload           = 120-1;                      /* Autoreload value:120-1 */
  
  LL_EPWM_Init(EPWM1, &EPWM1CountInit);
  LL_EPWM_SetCounterMode(EPWM1, LL_EPWM_CNTR_MODE_UP);
  
  /* Locks all EPWM common register and part of EPWMx register */
  LL_EPWM_EDIS(EPWMC);
  
  /* Infinite loop */
  while (1)
  {
    
  }
}

/**
  * @brief  System Clock Configuration
  * @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;
  OscInitstruct.HSIState            = RCC_HSI_ON;                               /* Enable HSI */
  OscInitstruct.HSIDiv              = RCC_HSI_DIV1;                             /* HSI 1 frequency division */
  OscInitstruct.HSICalibrationValue = RCC_HSICALIBRATION_8MHz;                  /* Configure HSI clock 8MHz */
  OscInitstruct.HSEState            = RCC_HSE_ON;                               /* Enable HSE */
  OscInitstruct.HSEFreq             = RCC_HSE_16_24MHz;                         /* Choose HSE frequency of 16-24MHz */
  OscInitstruct.LSEState            = RCC_LSE_OFF;                              /* Close LSE */
/* OscInitstruct.LSEDriver           = RCC_LSEDRIVE_HIGH; */                    /* Drive capability level: high */
  OscInitstruct.LSIState            = RCC_LSI_OFF;                              /* Close LSI */
  OscInitstruct.PLL.PLLState        = RCC_PLL_ON;                               /* Enable PLL */
  OscInitstruct.PLL.PLLSource       = RCC_PLLSOURCE_HSE;                        /* PLL clock source selection HSE */
  OscInitstruct.PLL.PLLMUL          = RCC_PLL_MUL5;                             /* PLL clock source 5-fold frequency */
  /* Configure oscillator */
  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_PLLCLK;              /* System clock selection PLL */
  ClkInitstruct.AHBCLKDivider   = RCC_SYSCLK_DIV1;                      /* AHB clock 1 division */
  ClkInitstruct.APB1CLKDivider  = RCC_HCLK_DIV1;                        /* APB1 clock 1 division */
  ClkInitstruct.APB2CLKDivider  = RCC_HCLK_DIV1;                        /* APB2 clock 1 division */
  /* Configure Clock */
  if(HAL_RCC_ClockConfig(&ClkInitstruct, FLASH_LATENCY_4) != 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******************/
