feng wang / mbed-STM32F103C8T6

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Dependents:   Bob_Curtain_Sample_0506

SysClockConf.cpp@5:9fbbea76d6f6, 2016-08-02 (annotated)

Committer:
hudakz
Date:
Tue Aug 02 19:37:40 2016 +0000
Revision:
5:9fbbea76d6f6
Parent:
4:306609fe9dc8
Child:
8:2582ee8cc84c
Child:
13:fe3c80e86183
USB clock implemented

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 4:306609fe9dc8 11 * <h2><center>&copy; COPYRIGHT(c) 2016 Zoltan Hudak <hudakz@inbox.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 5:9fbbea76d6f6 32 bool HSE_SystemClock_Config(void) {
hudakz 2:534793444c60 33 RCC_OscInitTypeDef RCC_OscInitStruct;
hudakz 2:534793444c60 34
hudakz 2:534793444c60 35 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
hudakz 2:534793444c60 36 RCC_OscInitStruct.HSEState = RCC_HSE_ON;
hudakz 2:534793444c60 37 RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
hudakz 2:534793444c60 38 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
hudakz 2:534793444c60 39 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
hudakz 5:9fbbea76d6f6 40 RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
hudakz 2:534793444c60 41
hudakz 2:534793444c60 42 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
hudakz 2:534793444c60 43 return false;
hudakz 2:534793444c60 44 }
hudakz 2:534793444c60 45
hudakz 2:534793444c60 46 RCC_ClkInitTypeDef RCC_ClkInitStruct;
hudakz 2:534793444c60 47
hudakz 2:534793444c60 48 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
hudakz 2:534793444c60 49 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
hudakz 2:534793444c60 50 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
hudakz 2:534793444c60 51 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
hudakz 2:534793444c60 52 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
hudakz 2:534793444c60 53 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
hudakz 2:534793444c60 54 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) {
hudakz 2:534793444c60 55 return false;
hudakz 2:534793444c60 56 }
hudakz 2:534793444c60 57
hudakz 2:534793444c60 58 RCC_PeriphCLKInitTypeDef PeriphClkInit;
hudakz 2:534793444c60 59
hudakz 2:534793444c60 60 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC|RCC_PERIPHCLK_USB;
hudakz 5:9fbbea76d6f6 61 PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
hudakz 5:9fbbea76d6f6 62 PeriphClkInit.UsbClockSelection = RCC_USBPLLCLK_DIV1_5;
hudakz 2:534793444c60 63 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) {
hudakz 2:534793444c60 64 return false;
hudakz 2:534793444c60 65 }
hudakz 2:534793444c60 66 return true;
hudakz 2:534793444c60 67 }
hudakz 2:534793444c60 68
hudakz 5:9fbbea76d6f6 69 bool confSysClock(void) {
hudakz 2:534793444c60 70 HAL_RCC_DeInit();
hudakz 5:9fbbea76d6f6 71 if (!HSE_SystemClock_Config()) {
hudakz 2:534793444c60 72 return false;
hudakz 2:534793444c60 73 }
hudakz 2:534793444c60 74 SystemCoreClockUpdate();
hudakz 2:534793444c60 75 return true;
hudakz 2:534793444c60 76 }
hudakz 2:534793444c60 77
hudakz 2:534793444c60 78
hudakz 5:9fbbea76d6f6 79