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80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/******************************************************************************
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* @file system_M451Series.h
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* @version V0.10
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* $Revision: 7 $
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* $Date: 15/09/02 10:02a $
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* @brief CMSIS Cortex-M4 Core Peripheral Access Layer Header File for M451 Series MCU
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*
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* @note
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* Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#ifndef __SYSTEM_M451SERIES_H__
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#define __SYSTEM_M451SERIES_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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/*---------------------------------------------------------------------------------------------------------*/
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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 clocks
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*----------------------------------------------------------------------------*/
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#define __HSI (12000000UL) /*!< PLL default output is 72MHz */
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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 __SYS_OSC_CLK ( ___HSI) /* Main oscillator frequency */
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#if MBED_CONF_TARGET_HXT_PRESENT
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#define __SYSTEM_CLOCK (1*__HXT)
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#else
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#define __SYSTEM_CLOCK (1*__HIRC)
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#endif
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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 the System and update the SystemCoreClock variable.
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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 /* __SYSTEM_M451SERIES_H__ */
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/*** (C) COPYRIGHT 2013~2015 Nuvoton Technology Corp. ***/
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