mbed-os/targets/TARGET_NUVOTON/TARGET_M451/device/system_M451Series.h

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2016-08-09 01:58:33 +00:00
/******************************************************************************
* @file system_M451Series.h
* @version V0.10
* $Revision: 7 $
* $Date: 15/09/02 10:02a $
* @brief CMSIS Cortex-M4 Core Peripheral Access Layer Header File for M451 Series MCU
*
* @note
* Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#ifndef __SYSTEM_M451SERIES_H__
#define __SYSTEM_M451SERIES_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
/*---------------------------------------------------------------------------------------------------------*/
/* Macro Definition */
/*---------------------------------------------------------------------------------------------------------*/
#ifndef DEBUG_PORT
# define DEBUG_PORT UART0 /*!< Select Debug Port which is used for retarget.c to output debug message to UART */
#endif
/*----------------------------------------------------------------------------
Define clocks
*----------------------------------------------------------------------------*/
#define __HSI (12000000UL) /*!< PLL default output is 72MHz */
#define __HXT (12000000UL) /*!< External Crystal Clock Frequency */
#define __LXT (32768UL) /*!< External Crystal Clock Frequency 32.768KHz */
#define __HIRC (22118400UL) /*!< Internal 22M RC Oscillator Frequency */
#define __LIRC (10000UL) /*!< Internal 10K RC Oscillator Frequency */
#define __SYS_OSC_CLK ( ___HSI) /* Main oscillator frequency */
#define __SYSTEM_CLOCK (1*__HXT)
extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
extern uint32_t CyclesPerUs; /*!< Cycles per micro second */
extern uint32_t PllClock; /*!< PLL Output Clock Frequency */
/**
* Initialize the system
*
* @param None
* @return None
*
* @brief Setup the microcontroller system.
* Initialize the System and update the SystemCoreClock variable.
*/
extern void SystemInit(void);
/**
* Update SystemCoreClock variable
*
* @param None
* @return None
*
* @brief Updates the SystemCoreClock with current core Clock
* retrieved from cpu registers.
*/
extern void SystemCoreClockUpdate(void);
#ifdef __cplusplus
}
#endif
#endif /* __SYSTEM_M451SERIES_H__ */
/*** (C) COPYRIGHT 2013~2015 Nuvoton Technology Corp. ***/