feng wang / mbed-STM32F103C8T6

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Dependents:   Bob_Curtain_Sample_0506

SysClockConf.cpp@11:e0edd7ea602a, 2017-05-27 (annotated)

Committer:
hudakz
Date:
Sat May 27 16:25:10 2017 +0000
Revision:
11:e0edd7ea602a
Parent:
8:2582ee8cc84c
Child:
12:727468adfd1d
Updated.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 4:306609fe9dc8 1 /*
hudakz 4:306609fe9dc8 2 ******************************************************************************
hudakz 4:306609fe9dc8 3 * @file SysClockConf.c
hudakz 4:306609fe9dc8 4 * @author Zoltan Hudak
hudakz 4:306609fe9dc8 5 * @version
hudakz 4:306609fe9dc8 6 * @date 05-July-2016
hudakz 4:306609fe9dc8 7 * @brief System Clock configuration for STM32F103C8T6
hudakz 4:306609fe9dc8 8 ******************************************************************************
hudakz 4:306609fe9dc8 9 * @attention
hudakz 4:306609fe9dc8 10 *
hudakz 8:2582ee8cc84c 11 * <h2><center>&copy; COPYRIGHT(c) 2016 Zoltan Hudak <hudakz@outlook.com>
hudakz 4:306609fe9dc8 12 *
hudakz 4:306609fe9dc8 13 * All rights reserved.
hudakz 4:306609fe9dc8 14
hudakz 4:306609fe9dc8 15 This program is free software: you can redistribute it and/or modify
hudakz 4:306609fe9dc8 16 it under the terms of the GNU General Public License as published by
hudakz 4:306609fe9dc8 17 the Free Software Foundation, either version 3 of the License, or
hudakz 4:306609fe9dc8 18 (at your option) any later version.
hudakz 4:306609fe9dc8 19
hudakz 4:306609fe9dc8 20 This program is distributed in the hope that it will be useful,
hudakz 4:306609fe9dc8 21 but WITHOUT ANY WARRANTY; without even the implied warranty of
hudakz 4:306609fe9dc8 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
hudakz 4:306609fe9dc8 23 GNU General Public License for more details.
hudakz 4:306609fe9dc8 24
hudakz 4:306609fe9dc8 25 You should have received a copy of the GNU General Public License
hudakz 4:306609fe9dc8 26 along with this program. If not, see <http://www.gnu.org/licenses/>.
hudakz 4:306609fe9dc8 27 */
hudakz 4:306609fe9dc8 28
hudakz 2:534793444c60 29 #include "SysClockConf.h"
hudakz 2:534793444c60 30 #include "mbed.h"
hudakz 2:534793444c60 31
hudakz 11:e0edd7ea602a 32 extern volatile uint32_t tim_it_counter;
hudakz 11:e0edd7ea602a 33 volatile uint32_t tim_init;
hudakz 8:2582ee8cc84c 34
hudakz 8:2582ee8cc84c 35 void HSE_SystemClock_Config(void) {
hudakz 11:e0edd7ea602a 36 RCC_OscInitTypeDef RCC_OscInitStruct;
hudakz 11:e0edd7ea602a 37 RCC_ClkInitTypeDef RCC_ClkInitStruct;
hudakz 11:e0edd7ea602a 38 RCC_PeriphCLKInitTypeDef PeriphClkInit;
hudakz 2:534793444c60 39
hudakz 2:534793444c60 40 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
hudakz 2:534793444c60 41 RCC_OscInitStruct.HSEState = RCC_HSE_ON;
hudakz 2:534793444c60 42 RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
hudakz 2:534793444c60 43 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
hudakz 2:534793444c60 44 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
hudakz 5:9fbbea76d6f6 45 RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
hudakz 8:2582ee8cc84c 46 HAL_RCC_OscConfig(&RCC_OscInitStruct);
hudakz 11:e0edd7ea602a 47 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
hudakz 2:534793444c60 48 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
hudakz 2:534793444c60 49 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
hudakz 2:534793444c60 50 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
hudakz 2:534793444c60 51 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
hudakz 8:2582ee8cc84c 52 HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
hudakz 2:534793444c60 53 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC|RCC_PERIPHCLK_USB;
hudakz 5:9fbbea76d6f6 54 PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
hudakz 8:2582ee8cc84c 55 PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
hudakz 8:2582ee8cc84c 56 HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);
hudakz 2:534793444c60 57 }
hudakz 2:534793444c60 58
hudakz 11:e0edd7ea602a 59 void confSysClock(void) {
hudakz 8:2582ee8cc84c 60 tim_init = tim_it_counter;
hudakz 2:534793444c60 61 HAL_RCC_DeInit();
hudakz 8:2582ee8cc84c 62 HSE_SystemClock_Config();
hudakz 2:534793444c60 63 SystemCoreClockUpdate();
hudakz 2:534793444c60 64 }