4 * \brief Low-level initialization functions called upon chip startup
6 * Copyright (c) 2017 Microchip Technology Inc.
12 * SPDX-License-Identifier: Apache-2.0
14 * Licensed under the Apache License, Version 2.0 (the "License"); you may
15 * not use this file except in compliance with the License.
16 * You may obtain a copy of the Licence at
18 * http://www.apache.org/licenses/LICENSE-2.0
20 * Unless required by applicable law or agreed to in writing, software
21 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
22 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23 * See the License for the specific language governing permissions and
24 * limitations under the License.
30 #ifndef _SYSTEM_SAMD51_H_INCLUDED_
31 #define _SYSTEM_SAMD51_H_INCLUDED_
39 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
41 void SystemInit(void);
42 void SystemCoreClockUpdate(void);
48 #endif /* SYSTEM_SAMD51_H_INCLUDED */