mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_STM/mbed_overrides.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
188:bcfe06ba3d64 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 168:9672193075cf 1 /* mbed Microcontroller Library
AnnaBridge 168:9672193075cf 2 * Copyright (c) 2017, STMicroelectronics
AnnaBridge 168:9672193075cf 3 * All rights reserved.
AnnaBridge 168:9672193075cf 4 *
AnnaBridge 168:9672193075cf 5 * Redistribution and use in source and binary forms, with or without
AnnaBridge 168:9672193075cf 6 * modification, are permitted provided that the following conditions are met:
AnnaBridge 168:9672193075cf 7 *
AnnaBridge 168:9672193075cf 8 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 168:9672193075cf 9 * this list of conditions and the following disclaimer.
AnnaBridge 168:9672193075cf 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 168:9672193075cf 11 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 168:9672193075cf 12 * and/or other materials provided with the distribution.
AnnaBridge 168:9672193075cf 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 168:9672193075cf 14 * may be used to endorse or promote products derived from this software
AnnaBridge 168:9672193075cf 15 * without specific prior written permission.
AnnaBridge 168:9672193075cf 16 *
AnnaBridge 168:9672193075cf 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 168:9672193075cf 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 168:9672193075cf 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 168:9672193075cf 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 168:9672193075cf 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 168:9672193075cf 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 168:9672193075cf 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 168:9672193075cf 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 168:9672193075cf 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 168:9672193075cf 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 168:9672193075cf 27 */
AnnaBridge 168:9672193075cf 28 #include "cmsis.h"
AnnaBridge 168:9672193075cf 29
AnnaBridge 187:0387e8f68319 30 int mbed_sdk_inited = 0;
AnnaBridge 187:0387e8f68319 31
AnnaBridge 168:9672193075cf 32 // This function is called after RAM initialization and before main.
AnnaBridge 168:9672193075cf 33 void mbed_sdk_init()
AnnaBridge 168:9672193075cf 34 {
AnnaBridge 189:f392fc9709a3 35 #if defined(__ICACHE_PRESENT) /* STM32F7 */
AnnaBridge 181:57724642e740 36 // The mbed_sdk_init can be called either during cold boot or during
AnnaBridge 181:57724642e740 37 // application boot after bootloader has been executed.
AnnaBridge 181:57724642e740 38 // In case the bootloader has already enabled the cache,
AnnaBridge 181:57724642e740 39 // is is needed to not enable it again.
AnnaBridge 181:57724642e740 40 if ((SCB->CCR & (uint32_t)SCB_CCR_IC_Msk) == 0) { // If ICache is disabled
AnnaBridge 181:57724642e740 41 SCB_EnableICache();
AnnaBridge 181:57724642e740 42 }
AnnaBridge 181:57724642e740 43 if ((SCB->CCR & (uint32_t)SCB_CCR_DC_Msk) == 0) { // If DCache is disabled
AnnaBridge 181:57724642e740 44 SCB_EnableDCache();
AnnaBridge 181:57724642e740 45 }
AnnaBridge 189:f392fc9709a3 46 #endif /* __ICACHE_PRESENT */
AnnaBridge 181:57724642e740 47
AnnaBridge 168:9672193075cf 48 // Update the SystemCoreClock variable.
AnnaBridge 168:9672193075cf 49 SystemCoreClockUpdate();
AnnaBridge 168:9672193075cf 50 HAL_Init();
AnnaBridge 168:9672193075cf 51
AnnaBridge 168:9672193075cf 52 /* Configure the System clock source, PLL Multiplier and Divider factors,
AnnaBridge 168:9672193075cf 53 AHB/APBx prescalers and Flash settings */
AnnaBridge 168:9672193075cf 54 SetSysClock();
AnnaBridge 168:9672193075cf 55 SystemCoreClockUpdate();
AnnaBridge 187:0387e8f68319 56
AnnaBridge 188:bcfe06ba3d64 57 /* Start LSI clock for RTC */
AnnaBridge 188:bcfe06ba3d64 58 #if DEVICE_RTC
AnnaBridge 188:bcfe06ba3d64 59 #if !MBED_CONF_TARGET_LSE_AVAILABLE
AnnaBridge 188:bcfe06ba3d64 60 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
AnnaBridge 188:bcfe06ba3d64 61
AnnaBridge 188:bcfe06ba3d64 62 if (__HAL_RCC_GET_RTC_SOURCE() != RCC_RTCCLKSOURCE_NO_CLK) {
AnnaBridge 188:bcfe06ba3d64 63 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
AnnaBridge 188:bcfe06ba3d64 64 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
AnnaBridge 188:bcfe06ba3d64 65 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
AnnaBridge 188:bcfe06ba3d64 66 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
AnnaBridge 188:bcfe06ba3d64 67 error("Init : cannot initialize LSI\n");
AnnaBridge 188:bcfe06ba3d64 68 }
AnnaBridge 188:bcfe06ba3d64 69 }
AnnaBridge 188:bcfe06ba3d64 70 #endif /* ! MBED_CONF_TARGET_LSE_AVAILABLE */
AnnaBridge 188:bcfe06ba3d64 71 #endif /* DEVICE_RTC */
AnnaBridge 188:bcfe06ba3d64 72
AnnaBridge 187:0387e8f68319 73 mbed_sdk_inited = 1;
AnnaBridge 168:9672193075cf 74 }