/**
  ******************************************************************************
  * @file    USB_Device/CustomHID_Standalone/Src/main.c 
  * @author  MCD Application Team
  * @version V1.6.0
  * @date    12-May-2017
  * @brief   USB device CustomHID application main file.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright © 2016 STMicroelectronics International N.V. 
  * All rights reserved.</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without 
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice, 
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other 
  *    contributors to this software may be used to endorse or promote products 
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this 
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under 
  *    this license is void and will automatically terminate your rights under 
  *    this license. 
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

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


/** @addtogroup STM32F1xx_HAL_Validation
  * @{
  */

/** @addtogroup STANDARD_CHECK
  * @{
  */

/* Private typedef ----------------------------------------------------------- */
/* Private define ------------------------------------------------------------ */
/* Private macro ------------------------------------------------------------- */
/* Private variables --------------------------------------------------------- */
USBD_HandleTypeDef USBD_Device;

/* Private function prototypes ----------------------------------------------- */
void SystemClock_Config(void);
static void Error_Handler(void);

/* Private functions --------------------------------------------------------- */

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. 
   */
  HAL_Init();

  /* Initialize LEDs */
  BSP_LED_Init(LED1);
  BSP_LED_Init(LED2);
  BSP_LED_Init(LED3);
  BSP_LED_Init(LED4);

  /* Configure the system clock to 72 MHz */
  SystemClock_Config();

  /* Init Device Library */
  USBD_Init(&USBD_Device, &HID_Desc, 0);

  /* Add Supported Class */
  USBD_RegisterClass(&USBD_Device, &USBD_CUSTOM_HID);

  /* Add Custom HID callbacks */
  USBD_CUSTOM_HID_RegisterInterface(&USBD_Device, &USBD_CustomHID_fops);

  /* Start Device Process */
  USBD_Start(&USBD_Device);

  /* Infinite loop */
  while (1)
  {
  }
}

/**
  * @brief  System Clock Configuration
  *         The system Clock is configured as follow : 
  *            System Clock source            = PLL (HSE)
  *            SYSCLK(Hz)                     = 72000000
  *            HCLK(Hz)                       = 72000000
  *            AHB Prescaler                  = 1
  *            APB1 Prescaler                 = 2
  *            APB2 Prescaler                 = 1
  *            HSE Frequency(Hz)              = 8000000
  *            HSE PREDIV1                    = 1
  *            PLLMUL                         = 9
  *            Flash Latency(WS)              = 2
  * @param  None
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef clkinitstruct = { 0 };
  RCC_OscInitTypeDef oscinitstruct = { 0 };
  RCC_PeriphCLKInitTypeDef rccperiphclkinit = { 0 };

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  oscinitstruct.HSEState = RCC_HSE_ON;
  oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL9;

  oscinitstruct.PLL.PLLState = RCC_PLL_ON;
  oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  if (HAL_RCC_OscConfig(&oscinitstruct) != HAL_OK)
  {
    /* Start Conversation Error */
    Error_Handler();
  }

  /* USB clock selection */
  rccperiphclkinit.PeriphClockSelection = RCC_PERIPHCLK_USB;
  rccperiphclkinit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
  HAL_RCCEx_PeriphCLKConfig(&rccperiphclkinit);

  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
   * clocks dividers */
  clkinitstruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK |
                            RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;

  clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2;
  clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
  if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2) != HAL_OK)
  {
    /* Start Conversation Error */
    Error_Handler();
  }
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
static void Error_Handler(void)
{
  /* Turn LED3 on */
  BSP_LED_On(LED3);
  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, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, 
   * line) */

  /* Infinite loop */
  while (1)
  {
  }
}

#endif

/**
  * @}
  */

/**
  * @}
  */

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