Page 327 - MDP2022-2
P. 327

/**  Configure  the  main  internal  regulator  output  voltage
                */
                __HAL_RCC_PWR_CLK_ENABLE();
                __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_HSI;
                RCC_OscInitStruct.HSIState  =  RCC_HSI_ON;
                RCC_OscInitStruct.HSICalibrationValue  =  RCC_HSICALIBRATION_DEFAULT;
                RCC_OscInitStruct.PLL.PLLState  =  RCC_PLL_ON;
                RCC_OscInitStruct.PLL.PLLSource  =  RCC_PLLSOURCE_HSI;
                RCC_OscInitStruct.PLL.PLLM  =  8;
                RCC_OscInitStruct.PLL.PLLN  =  180;
                RCC_OscInitStruct.PLL.PLLP  =  RCC_PLLP_DIV2;
                RCC_OscInitStruct.PLL.PLLQ  =  4;
                if  (HAL_RCC_OscConfig(&RCC_OscInitStruct)  !=  HAL_OK)
                {
                    Error_Handler();
                }
                /**  Activate  the  Over-Drive  mode
                */
                if  (HAL_PWREx_EnableOverDrive()  !=  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_ClkInitStruct.SYSCLKSource  =  RCC_SYSCLKSOURCE_PLLCLK;
                RCC_ClkInitStruct.AHBCLKDivider  =  RCC_SYSCLK_DIV1;
                RCC_ClkInitStruct.APB1CLKDivider  =  RCC_HCLK_DIV4;
                RCC_ClkInitStruct.APB2CLKDivider  =  RCC_HCLK_DIV2;


                if  (HAL_RCC_ClockConfig(&RCC_ClkInitStruct,  FLASH_LATENCY_5)  !=  HAL_OK)
                {
                    Error_Handler();
                }
            }
            /**
                *  @brief  GPIO  Initialization  Function
                *  @param  None
                *  @retval  None
                */
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