/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 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
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

#include "stm32_lpm.h"
#include "stm32_seq.h"
#include "dbg_trace.h"
#include "hw_conf.h"
#include "otp.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

RTC_HandleTypeDef hrtc;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_RF_Init(void);
static void MX_RTC_Init(void);
/* USER CODE BEGIN PFP */
void PeriphClock_Config(void);
static void Reset_Device( void );
static void Reset_IPCC( void );
static void Reset_BackupDomain( void );
static void Init_Exti( void );
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */
  Reset_Device();
  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */
  PeriphClock_Config();
  Init_Exti(); /**< Configure the system Power Mode */
  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_RF_Init();
  MX_RTC_Init();
  MX_USB_Device_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Init code for STM32_WPAN */
  APPE_Init();
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    UTIL_SEQ_Run(UTIL_SEQ_DEFAULT);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};

  /** Configure LSE Drive Capability
  */
  HAL_PWR_EnableBkUpAccess();
  __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48|RCC_OSCILLATORTYPE_HSI
                              |RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_LSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.LSEState = RCC_LSE_ON;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK4|RCC_CLOCKTYPE_HCLK2
                              |RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.AHBCLK2Divider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLK4Divider = RCC_SYSCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the peripherals clocks
  */
  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SMPS|RCC_PERIPHCLK_RFWAKEUP
                              |RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_USB;
  PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
  PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
  PeriphClkInitStruct.RFWakeUpClockSelection = RCC_RFWKPCLKSOURCE_LSE;
  PeriphClkInitStruct.SmpsClockSelection = RCC_SMPSCLKSOURCE_HSI;
  PeriphClkInitStruct.SmpsDivSelection = RCC_SMPSCLKDIV_RANGE0;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN Smps */

  /* USER CODE END Smps */
}

/**
  * @brief RF Initialization Function
  * @param None
  * @retval None
  */
static void MX_RF_Init(void)
{

  /* USER CODE BEGIN RF_Init 0 */

  /* USER CODE END RF_Init 0 */

  /* USER CODE BEGIN RF_Init 1 */

  /* USER CODE END RF_Init 1 */
  /* USER CODE BEGIN RF_Init 2 */

  /* USER CODE END RF_Init 2 */

}

/**
  * @brief RTC Initialization Function
  * @param None
  * @retval None
  */
static void MX_RTC_Init(void)
{

  /* USER CODE BEGIN RTC_Init 0 */

  /* USER CODE END RTC_Init 0 */

  /* USER CODE BEGIN RTC_Init 1 */

  /* USER CODE END RTC_Init 1 */
  /** Initialize RTC Only
  */
  hrtc.Instance = RTC;
  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
  hrtc.Init.AsynchPrediv = CFG_RTC_ASYNCH_PRESCALER;
  hrtc.Init.SynchPrediv = CFG_RTC_SYNCH_PRESCALER;
  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN RTC_Init 2 */

  /* USER CODE END RTC_Init 2 */

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, LED_GREEN_Pin|LED_RED_Pin|LED_BLUE_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin : SW1_Pin */
  GPIO_InitStruct.Pin = SW1_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(SW1_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : LED_GREEN_Pin LED_RED_Pin LED_BLUE_Pin */
  GPIO_InitStruct.Pin = LED_GREEN_Pin|LED_RED_Pin|LED_BLUE_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pins : SW2_Pin SW3_Pin */
  GPIO_InitStruct.Pin = SW2_Pin|SW3_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI4_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI4_IRQn);

}

/* USER CODE BEGIN 4 */
void PeriphClock_Config(void)
{
	RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = { 0 };
	RCC_CRSInitTypeDef RCC_CRSInitStruct = { 0 };

	/**
   * This prevents the CPU2 to disable the HSI48 oscillator when
   * it does not use anymore the RNG IP
   */
  LL_HSEM_1StepLock( HSEM, 5 );

  LL_RCC_HSI48_Enable();

	while(!LL_RCC_HSI48_IsReady());

	/* Select HSI48 as USB clock source */
	PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB;
	PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
	HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);

	/*Configure the clock recovery system (CRS)**********************************/

	/* Enable CRS Clock */
	__HAL_RCC_CRS_CLK_ENABLE();

	/* Default Synchro Signal division factor (not divided) */
	RCC_CRSInitStruct.Prescaler = RCC_CRS_SYNC_DIV1;

	/* Set the SYNCSRC[1:0] bits according to CRS_Source value */
	RCC_CRSInitStruct.Source = RCC_CRS_SYNC_SOURCE_USB;

	/* HSI48 is synchronized with USB SOF at 1KHz rate */
	RCC_CRSInitStruct.ReloadValue = RCC_CRS_RELOADVALUE_DEFAULT;
	RCC_CRSInitStruct.ErrorLimitValue = RCC_CRS_ERRORLIMIT_DEFAULT;

	RCC_CRSInitStruct.Polarity = RCC_CRS_SYNC_POLARITY_RISING;

	/* Set the TRIM[5:0] to the default value*/
	RCC_CRSInitStruct.HSI48CalibrationValue = RCC_CRS_HSI48CALIBRATION_DEFAULT;

	/* Start automatic synchronization */
	HAL_RCCEx_CRSConfig(&RCC_CRSInitStruct);

	return;
}
/*************************************************************
 *
 * LOCAL FUNCTIONS
 *
 *************************************************************/
static void Reset_Device( void )
{
#if ( CFG_HW_RESET_BY_FW == 1 )
	Reset_BackupDomain();

	Reset_IPCC();
#endif

	return;
}

static void Reset_IPCC( void )
{
	LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_IPCC);

	LL_C1_IPCC_ClearFlag_CHx(
			IPCC,
			LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4
			| LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);

	LL_C2_IPCC_ClearFlag_CHx(
			IPCC,
			LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4
			| LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);

	LL_C1_IPCC_DisableTransmitChannel(
			IPCC,
			LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4
			| LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);

	LL_C2_IPCC_DisableTransmitChannel(
			IPCC,
			LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4
			| LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);

	LL_C1_IPCC_DisableReceiveChannel(
			IPCC,
			LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4
			| LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);

	LL_C2_IPCC_DisableReceiveChannel(
			IPCC,
			LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4
			| LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);

	return;
}

static void Reset_BackupDomain( void )
{
	if ((LL_RCC_IsActiveFlag_PINRST() != FALSE) && (LL_RCC_IsActiveFlag_SFTRST() == FALSE))
	{
		HAL_PWR_EnableBkUpAccess(); /**< Enable access to the RTC registers */

		/**
		 *  Write twice the value to flush the APB-AHB bridge
		 *  This bit shall be written in the register before writing the next one
		 */
		HAL_PWR_EnableBkUpAccess();

		__HAL_RCC_BACKUPRESET_FORCE();
		__HAL_RCC_BACKUPRESET_RELEASE();
	}

	return;
}

static void Init_Exti( void )
{
  /**< Disable all wakeup interrupt on CPU1  except IPCC(36), HSEM(38) */
  LL_EXTI_DisableIT_0_31(~0);
  LL_EXTI_DisableIT_32_63( (~0) & (~(LL_EXTI_LINE_36 | LL_EXTI_LINE_38)) );

  return;
}

/*************************************************************
 *
 * WRAP FUNCTIONS
 *
 *************************************************************/
void HAL_Delay(uint32_t Delay)
{
  uint32_t tickstart = HAL_GetTick();
  uint32_t wait = Delay;

  /* Add a freq to guarantee minimum wait */
  if (wait < HAL_MAX_DELAY)
  {
    wait += HAL_GetTickFreq();
  }

  while ((HAL_GetTick() - tickstart) < wait)
  {
    /************************************************************************************
     * ENTER SLEEP MODE
     ***********************************************************************************/
    LL_LPM_EnableSleep( ); /**< Clear SLEEPDEEP bit of Cortex System Control Register */

    /**
     * This option is used to ensure that store operations are completed
     */
  #if defined ( __CC_ARM)
    __force_stores();
  #endif

    __WFI( );
  }
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#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 CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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