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Diff: I2S_Example/system_LPC17xx.h
- Revision:
- 0:63ed631d8c3a
diff -r 000000000000 -r 63ed631d8c3a I2S_Example/system_LPC17xx.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/I2S_Example/system_LPC17xx.h Fri Jan 21 08:39:48 2011 +0000 @@ -0,0 +1,72 @@ +/**************************************************************************//** + * @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) */ + + +/** + * 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_LPC17xx_H */