Core/Src/main.c
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};

  /** Supply configuration update enable
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
  /** Macro to configure the PLL clock source
  */
  __HAL_RCC_PLL_PLLSOURCE_CONFIG(RCC_PLLSOURCE_HSE);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 1;
  RCC_OscInitStruct.PLL.PLLN = 120;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV8;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART3|RCC_PERIPHCLK_FDCAN
                              |RCC_PERIPHCLK_ADC|RCC_PERIPHCLK_FMC;
  PeriphClkInitStruct.PLL2.PLL2M = 4;
  PeriphClkInitStruct.PLL2.PLL2N = 128;
  PeriphClkInitStruct.PLL2.PLL2P = 2;
  PeriphClkInitStruct.PLL2.PLL2Q = 4;
  PeriphClkInitStruct.PLL2.PLL2R = 2;
  PeriphClkInitStruct.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_1;
  PeriphClkInitStruct.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE;
  PeriphClkInitStruct.PLL2.PLL2FRACN = 0;
  PeriphClkInitStruct.FmcClockSelection = RCC_FMCCLKSOURCE_D1HCLK;
  PeriphClkInitStruct.FdcanClockSelection = RCC_FDCANCLKSOURCE_PLL2;
  PeriphClkInitStruct.Usart234578ClockSelection = RCC_USART234578CLKSOURCE_D2PCLK1;
  PeriphClkInitStruct.AdcClockSelection = RCC_ADCCLKSOURCE_PLL2;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
}
/**
  * @brief System Clock Configuration
  * @retval None
  */
@brief System Clock Configuration
@retval None
@brief System Clock Configuration @retval None
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);
  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
  __HAL_RCC_PLL_PLLSOURCE_CONFIG(RCC_PLLSOURCE_HSE);
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 1;
  RCC_OscInitStruct.PLL.PLLN = 120;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV8;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1;
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART3|RCC_PERIPHCLK_FDCAN
                              |RCC_PERIPHCLK_ADC|RCC_PERIPHCLK_FMC;
  PeriphClkInitStruct.PLL2.PLL2M = 4;
  PeriphClkInitStruct.PLL2.PLL2N = 128;
  PeriphClkInitStruct.PLL2.PLL2P = 2;
  PeriphClkInitStruct.PLL2.PLL2Q = 4;
  PeriphClkInitStruct.PLL2.PLL2R = 2;
  PeriphClkInitStruct.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_1;
  PeriphClkInitStruct.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE;
  PeriphClkInitStruct.PLL2.PLL2FRACN = 0;
  PeriphClkInitStruct.FmcClockSelection = RCC_FMCCLKSOURCE_D1HCLK;
  PeriphClkInitStruct.FdcanClockSelection = RCC_FDCANCLKSOURCE_PLL2;
  PeriphClkInitStruct.Usart234578ClockSelection = RCC_USART234578CLKSOURCE_D2PCLK1;
  PeriphClkInitStruct.AdcClockSelection = RCC_ADCCLKSOURCE_PLL2;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
}
void SystemClock_Config ( void ) { RCC_OscInitTypeDef RCC_OscInitStruct = { 0 } ; RCC_ClkInitTypeDef RCC_ClkInitStruct = { 0 } ; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = { 0 } ; HAL_PWREx_ConfigSupply ( PWR_LDO_SUPPLY ) ; __HAL_PWR_VOLTAGESCALING_CONFIG ( PWR_REGULATOR_VOLTAGE_SCALE0 ) ; while ( ! __HAL_PWR_GET_FLAG ( PWR_FLAG_VOSRDY ) ) { } __HAL_RCC_PLL_PLLSOURCE_CONFIG ( RCC_PLLSOURCE_HSE ) ; RCC_OscInitStruct . OscillatorType = RCC_OSCILLATORTYPE_HSE ; RCC_OscInitStruct . HSEState = RCC_HSE_BYPASS ; RCC_OscInitStruct . PLL . PLLState = RCC_PLL_ON ; RCC_OscInitStruct . PLL . PLLSource = RCC_PLLSOURCE_HSE ; RCC_OscInitStruct . PLL . PLLM = 1 ; RCC_OscInitStruct . PLL . PLLN = 120 ; RCC_OscInitStruct . PLL . PLLP = 2 ; RCC_OscInitStruct . PLL . PLLQ = 4 ; RCC_OscInitStruct . PLL . PLLR = 2 ; RCC_OscInitStruct . PLL . PLLRGE = RCC_PLL1VCIRANGE_3 ; RCC_OscInitStruct . PLL . PLLVCOSEL = RCC_PLL1VCOWIDE ; RCC_OscInitStruct . PLL . PLLFRACN = 0 ; if ( HAL_RCC_OscConfig ( & RCC_OscInitStruct ) != HAL_OK ) { Error_Handler ( ) ; } RCC_ClkInitStruct . ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2 | RCC_CLOCKTYPE_D3PCLK1 | RCC_CLOCKTYPE_D1PCLK1 ; RCC_ClkInitStruct . SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK ; RCC_ClkInitStruct . SYSCLKDivider = RCC_SYSCLK_DIV1 ; RCC_ClkInitStruct . AHBCLKDivider = RCC_HCLK_DIV8 ; RCC_ClkInitStruct . APB3CLKDivider = RCC_APB3_DIV1 ; RCC_ClkInitStruct . APB1CLKDivider = RCC_APB1_DIV1 ; RCC_ClkInitStruct . APB2CLKDivider = RCC_APB2_DIV1 ; RCC_ClkInitStruct . APB4CLKDivider = RCC_APB4_DIV1 ; if ( HAL_RCC_ClockConfig ( & RCC_ClkInitStruct , FLASH_LATENCY_0 ) != HAL_OK ) { Error_Handler ( ) ; } PeriphClkInitStruct . PeriphClockSelection = RCC_PERIPHCLK_USART3 | RCC_PERIPHCLK_FDCAN | RCC_PERIPHCLK_ADC | RCC_PERIPHCLK_FMC ; PeriphClkInitStruct . PLL2 . PLL2M = 4 ; PeriphClkInitStruct . PLL2 . PLL2N = 128 ; PeriphClkInitStruct . PLL2 . PLL2P = 2 ; PeriphClkInitStruct . PLL2 . PLL2Q = 4 ; PeriphClkInitStruct . PLL2 . PLL2R = 2 ; PeriphClkInitStruct . PLL2 . PLL2RGE = RCC_PLL2VCIRANGE_1 ; PeriphClkInitStruct . PLL2 . PLL2VCOSEL = RCC_PLL2VCOWIDE ; PeriphClkInitStruct . PLL2 . PLL2FRACN = 0 ; PeriphClkInitStruct . FmcClockSelection = RCC_FMCCLKSOURCE_D1HCLK ; PeriphClkInitStruct . FdcanClockSelection = RCC_FDCANCLKSOURCE_PLL2 ; PeriphClkInitStruct . Usart234578ClockSelection = RCC_USART234578CLKSOURCE_D2PCLK1 ; PeriphClkInitStruct . AdcClockSelection = RCC_ADCCLKSOURCE_PLL2 ; if ( HAL_RCCEx_PeriphCLKConfig ( & PeriphClkInitStruct ) != HAL_OK ) { Error_Handler ( ) ; } }
@brief System Clock Configuration
 @retval None
@brief System Clock Configuration @retval None
/** Supply configuration update enable
  */ /** Configure the main internal regulator output voltage
  */ /** Macro to configure the PLL clock source
  */ /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */ /** Initializes the CPU, AHB and APB buses clocks
  */