1 /*! 2 \file system_gd32e50x.h 3 \brief CMSIS Cortex-M33 Device Peripheral Access Layer Header File for 4 GD32E50x Device Series 5 */ 6 7 /* Copyright (c) 2012 ARM LIMITED 8 9 All rights reserved. 10 Redistribution and use in source and binary forms, with or without 11 modification, are permitted provided that the following conditions are met: 12 - Redistributions of source code must retain the above copyright 13 notice, this list of conditions and the following disclaimer. 14 - Redistributions in binary form must reproduce the above copyright 15 notice, this list of conditions and the following disclaimer in the 16 documentation and/or other materials provided with the distribution. 17 - Neither the name of ARM nor the names of its contributors may be used 18 to endorse or promote products derived from this software without 19 specific prior written permission. 20 * 21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE 25 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 POSSIBILITY OF SUCH DAMAGE. 32 ---------------------------------------------------------------------------*/ 33 34 /* This file refers the CMSIS standard, some adjustments are made according to GigaDevice chips */ 35 36 #ifndef SYSTEM_GD32E50X_H 37 #define SYSTEM_GD32E50X_H 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 #include <stdint.h> 44 45 /* system clock frequency (core clock) */ 46 extern uint32_t SystemCoreClock; 47 48 /* function declarations */ 49 /* initialize the system and update the SystemCoreClock variable */ 50 extern void SystemInit (void); 51 /* update the SystemCoreClock with current core clock retrieved from CPU registers */ 52 extern void SystemCoreClockUpdate (void); 53 54 #ifdef __cplusplus 55 } 56 #endif 57 58 #endif /* SYSTEM_GD32E50X_H */ 59
