1 /*
2  * Copyright (c) 2006-2025 RT-Thread Development Team
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  *
6  * Change Logs:
7  * Date           Author       Notes
8  * 2018-12-21     zylx         first version
9  */
10 
11 #include "board.h"
12 
SystemClock_Config(void)13 void SystemClock_Config(void)
14 {
15   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
16   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
17 
18   /** Configure the main internal regulator output voltage
19   */
20   HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
21 
22   /** Initializes the RCC Oscillators according to the specified parameters
23   * in the RCC_OscInitTypeDef structure.
24   */
25   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
26   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
27   RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
28   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
29   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
30   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
31   {
32     Error_Handler();
33   }
34 
35   /** Initializes the CPU, AHB and APB buses clocks
36   */
37   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
38                               |RCC_CLOCKTYPE_PCLK1;
39   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
40   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
41   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
42 
43   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
44   {
45     Error_Handler();
46   }
47 }
48