tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC176X/system_LPC17xx.h

   1 /******************************************************************************
   2  * @file:    system_LPC17xx.h
   3  * @purpose: CMSIS Cortex-M3 Device Peripheral Access Layer Header File
   4  *           for the NXP LPC17xx Device Series
   5  * @version: V1.02
   6  * @date:    27. July 2009
   7  *----------------------------------------------------------------------------
   8  *
   9  * Copyright (C) 2009 ARM Limited. All rights reserved.
  10  *
  11  * ARM Limited (ARM) is supplying this software for use with Cortex-M3
  12  * processor based microcontrollers.  This file can be freely distributed
  13  * within development tools that are supporting such ARM based processors.
  14  *
  15  * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
  16  * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
  17  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
  18  * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
  19  * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
  20  *
  21  ******************************************************************************/
  22
  23
  24 #ifndef __SYSTEM_LPC17xx_H
  25 #define __SYSTEM_LPC17xx_H
  26
  27 #ifdef __cplusplus
  28  extern "C" {
  29 #endif
  30
  31 extern uint32_t SystemCoreClock;     /*!< System Clock Frequency (Core Clock)  */
  32
  33
  34 /**
  35  * Initialize the system
  36  *
  37  * @param  none
  38  * @return none
  39  *
  40  * @brief  Setup the microcontroller system.
  41  *         Initialize the System and update the SystemCoreClock variable.
  42  */
  43 extern void SystemInit (void);
  44
  45 /**
  46  * Update SystemCoreClock variable
  47  *
  48  * @param  none
  49  * @return none
  50  *
  51  * @brief  Updates the SystemCoreClock with current core Clock
  52  *         retrieved from cpu registers.
  53  */
  54 extern void SystemCoreClockUpdate (void);
  55
  56 #ifdef __cplusplus
  57 }
  58 #endif
  59
  60 #endif /* __SYSTEM_LPC17xx_H */