system_ARMCM0.h 1.5 KB

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  1. /**************************************************************************//**
  2. * @file system_ARMCM0.h
  3. * @brief CMSIS Device System Header File for
  4. * ARMCM0 Device
  5. * @version V5.3.1
  6. * @date 09. July 2018
  7. ******************************************************************************/
  8. /*
  9. * Copyright (c) 2009-2018 Arm Limited. All rights reserved.
  10. *
  11. * SPDX-License-Identifier: Apache-2.0
  12. *
  13. * Licensed under the Apache License, Version 2.0 (the License); you may
  14. * not use this file except in compliance with the License.
  15. * You may obtain a copy of the License at
  16. *
  17. * www.apache.org/licenses/LICENSE-2.0
  18. *
  19. * Unless required by applicable law or agreed to in writing, software
  20. * distributed under the License is distributed on an AS IS BASIS, WITHOUT
  21. * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  22. * See the License for the specific language governing permissions and
  23. * limitations under the License.
  24. */
  25. #ifndef SYSTEM_ARMCM0_H
  26. #define SYSTEM_ARMCM0_H
  27. #ifdef __cplusplus
  28. extern "C" {
  29. #endif
  30. extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
  31. /**
  32. \brief Setup the microcontroller system.
  33. Initialize the System and update the SystemCoreClock variable.
  34. */
  35. extern void SystemInit (void);
  36. /**
  37. \brief Update SystemCoreClock variable.
  38. Updates the SystemCoreClock with current core Clock retrieved from cpu registers.
  39. */
  40. extern void SystemCoreClockUpdate (void);
  41. #ifdef __cplusplus
  42. }
  43. #endif
  44. #endif /* SYSTEM_ARMCM0_H */