67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
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/**************************************************************************//**
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* @file system_NUC123.h
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* @version V3.0
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* $Revision: 5 $
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* $Date: 15/07/02 11:21a $
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* @brief NUC123 Series CMSIS System Header File
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*
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* @note
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* SPDX-License-Identifier: Apache-2.0
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* Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved.
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*
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******************************************************************************/
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#ifndef __SYSTEM_NUC123_H
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#define __SYSTEM_NUC123_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*---------------------------------------------------------------------------------------------------------*/
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/* Macro Definition */
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/*---------------------------------------------------------------------------------------------------------*/
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#ifndef DEBUG_PORT
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# define DEBUG_PORT UART0 /*!< Select Debug Port which is used for retarget.c to output debug message to UART */
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#endif
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/*----------------------------------------------------------------------------
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Define SYSCLK
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*----------------------------------------------------------------------------*/
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#define __HXT (12000000UL) /*!< External Crystal Clock Frequency */
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#define __LXT (32768UL) /*!< External Crystal Clock Frequency 32.768KHz */
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#define __HIRC (22118400UL) /*!< Internal 22M RC Oscillator Frequency */
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#define __LIRC (10000UL) /*!< Internal 10K RC Oscillator Frequency */
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#define __HSI (50000000UL) /*!< PLL default output is 50MHz */
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extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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extern uint32_t CyclesPerUs; /*!< Cycles per micro second */
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extern uint32_t PllClock; /*!< PLL Output Clock Frequency */
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/**
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* Initialize the system
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*
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* @param none
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* @return none
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*
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* @brief Setup the microcontroller system
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* Initialize GPIO directions and values
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*/
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extern void SystemInit(void);
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/**
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* Update SystemCoreClock variable
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*
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* @param none
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* @return none
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*
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* @brief Updates the SystemCoreClock with current core Clock
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* retrieved from CPU registers.
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*/
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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
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