system_LPC17xx.h

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/**************************************************************************//**
 * @file     system_LPC17xx.h
 * @brief    CMSIS Cortex-M3 Device Peripheral Access Layer Header File
 *           for the NXP LPC17xx Device Series
 * @version  V1.02
 * @date     08. September 2009
 *
 * @note
 * Copyright (C) 2009 ARM Limited. All rights reserved.
 *
 * @par
 * ARM Limited (ARM) is supplying this software for use with Cortex-M
 * processor based microcontrollers.  This file can be freely distributed
 * within development tools that are supporting such ARM based processors.
 *
 * @par
 * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
 * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
 *
 ******************************************************************************/


#ifndef __SYSTEM_LPC17xx_H
#define __SYSTEM_LPC17xx_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdint.h>

/** @addtogroup LPC17xx_System
 * @{
 */


extern uint32_t SystemCoreClock;      /*!< System Clock Frequency (Core Clock)*/
#ifdef i_MCU_MODEL
#if ((i_MCU_MODEL >= 1770) &&  (i_MCU_MODEL < 1800))
        extern uint32_t PeripheralClock;/*!< Peripheral Clock Frequency (Pclk)*/
        extern uint32_t EMCClock;       /*!< EMC Clock*/
        extern uint32_t USBClock;       /*!< USB Frequency*/
#endif
#endif


/**
 * 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);

/*----------------------------------------------------------------------------
  Define clocks
 *----------------------------------------------------------------------------*/
#ifndef XTAL_HZ
        #define XTAL_HZ     (12000000UL)        /* Oscillator frequency               */
#endif
#ifndef OSC_CLK
        #define OSC_CLK     (   XTAL_HZ)        /* Main oscillator frequency          */
#endif
#ifndef RTC_CLK
        #define RTC_CLK     (   32768UL)        /* RTC oscillator frequency           */
#endif
#ifndef IRC_OSC
        #define IRC_OSC     ( 4000000UL)        /* Internal RC oscillator frequency   */
#endif
#ifndef WDT_OSC
        #define WDT_OSC           (  500000UL)          /* Internal WDT oscillator frequency  */
#endif
/*
//-------- <<< end of configuration section >>> ------------------------------
*/

#ifdef __cplusplus
}
#endif

/**
 * @}
 */

#endif /* __SYSTEM_LPC17xx_H */