90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
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/*
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Copyright (c) 2009-2020 ARM Limited. All rights reserved.
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SPDX-License-Identifier: Apache-2.0
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Licensed under the Apache License, Version 2.0 (the License); you may
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not use this file except in compliance with the License.
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You may obtain a copy of the License at
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www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an AS IS BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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NOTICE: This file has been modified by Nordic Semiconductor ASA.
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*/
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/* NOTE: Template files (including this one) are application specific and therefore expected to
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be copied into the application project folder prior to its use! */
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#include <stdint.h>
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#include <stdbool.h>
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#include "nrf.h"
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#include "nrf_erratas.h"
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#include "system_nrf5340_network.h"
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/*lint ++flb "Enter library region" */
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#define __SYSTEM_CLOCK (64000000UL) /*!< NRF5340 network core uses a fixed System Clock Frequency of 32MHz */
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#if defined ( __CC_ARM )
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uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK;
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#elif defined ( __ICCARM__ )
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__root uint32_t SystemCoreClock = __SYSTEM_CLOCK;
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#elif defined ( __GNUC__ )
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uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK;
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#endif
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void SystemCoreClockUpdate(void)
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{
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SystemCoreClock = __SYSTEM_CLOCK;
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}
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void SystemInit(void)
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{
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/* Trimming of the device. Copy all the trimming values from FICR into the target addresses. Trim
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until one ADDR is not initialized. */
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uint32_t index = 0;
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for (index = 0; index < 32ul && NRF_FICR_NS->TRIMCNF[index].ADDR != (uint32_t *)0xFFFFFFFFul; index++){
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#if defined ( __ICCARM__ )
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/* IAR will complain about the order of volatile pointer accesses. */
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#pragma diag_suppress=Pa082
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#endif
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*NRF_FICR_NS->TRIMCNF[index].ADDR = NRF_FICR_NS->TRIMCNF[index].DATA;
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#if defined ( __ICCARM__ )
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#pragma diag_default=Pa082
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#endif
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}
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/* Workaround for Errata 49 "SLEEPENTER and SLEEPEXIT events asserted after pin reset" found at the Errata document
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for your device located at https://infocenter.nordicsemi.com/index.jsp */
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if (nrf53_errata_49())
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{
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if (NRF_RESET_NS->RESETREAS & RESET_RESETREAS_RESETPIN_Msk)
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{
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NRF_POWER_NS->EVENTS_SLEEPENTER = 0;
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NRF_POWER_NS->EVENTS_SLEEPEXIT = 0;
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}
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}
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/* Workaround for Errata 55 "Bits in RESETREAS are set when they should not be" found at the Errata document
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for your device located at https://infocenter.nordicsemi.com/index.jsp */
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if (nrf53_errata_55())
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{
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if (NRF_RESET_NS->RESETREAS & RESET_RESETREAS_RESETPIN_Msk){
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NRF_RESET_NS->RESETREAS = ~RESET_RESETREAS_RESETPIN_Msk;
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}
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}
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SystemCoreClockUpdate();
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}
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/*lint --flb "Leave library region" */
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