mirror of https://github.com/ARMmbed/mbed-os.git
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2018 GigaDevice Semiconductor Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may 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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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,
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* WITHOUT 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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*/
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#include "gd32f4xx.h"
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#include "cmsis.h"
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#include "hal_tick.h"
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int mbed_sdk_inited = 0;
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#if TICKER_TIMER_WIDTH_BIT == 16
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extern void ticker_16bits_timer_init(void);
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#else
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extern void ticker_32bits_timer_init(void);
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#endif
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/**
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* SDK hook for running code before ctors or OS
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*
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* This is a weak function which can be overridden by a target's
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* SDK to allow code to run after ram is initialized but before
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* the OS has been started or constructors have run.
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*
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* Preconditions:
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* - Ram is initialized
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* - NVIC is setup
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*/
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/**
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* This function is called after RAM initialization and before main.
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*/
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void mbed_sdk_init()
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{
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/* Update the SystemCoreClock */
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SystemCoreClockUpdate();
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nvic_priority_group_set(NVIC_PRIGROUP_PRE4_SUB0);
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/* configure 1ms tick */
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#if TICKER_TIMER_WIDTH_BIT == 16
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ticker_16bits_timer_init();
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#else
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ticker_32bits_timer_init();
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#endif
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SystemInit();
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SystemCoreClockUpdate();
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mbed_sdk_inited = 1;
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}
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