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59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/*!
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\file system_gd32f4xx.h
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\brief CMSIS Cortex-M4 Device Peripheral Access Layer Header File for
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GD32F4xx Device Series
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*/
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/* Copyright (c) 2012 ARM LIMITED
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of ARM nor the names of its contributors may be used
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to endorse or promote products derived from this software without
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specific prior written permission.
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*
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------*/
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/* This file refers the CMSIS standard, some adjustments are made according to GigaDevice chips */
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#ifndef SYSTEM_GD32F4XX_H
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#define SYSTEM_GD32F4XX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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/* system clock frequency (core clock) */
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extern uint32_t SystemCoreClock;
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/* function declarations */
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/* initialize the system and update the SystemCoreClock variable */
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extern void SystemInit(void);
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/* update the SystemCoreClock with current core clock retrieved from cpu registers */
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extern void SystemCoreClockUpdate(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SYSTEM_GD32F4XX_H */
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