1 /**************************************************************************//**
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2 * @file system_LPC17xx.h
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3 * @brief CMSIS Cortex-M3 Device Peripheral Access Layer Header File
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4 * for the NXP LPC17xx Device Series
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6 * @date 08. September 2009
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9 * Copyright (C) 2009 ARM Limited. All rights reserved.
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12 * ARM Limited (ARM) is supplying this software for use with Cortex-M
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13 * processor based microcontrollers. This file can be freely distributed
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14 * within development tools that are supporting such ARM based processors.
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17 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
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18 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
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20 * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
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21 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
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23 ******************************************************************************/
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26 #ifndef __SYSTEM_LPC17xx_H
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27 #define __SYSTEM_LPC17xx_H
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35 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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39 * Initialize the system
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44 * @brief Setup the microcontroller system.
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45 * Initialize the System and update the SystemCoreClock variable.
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47 extern void SystemInit (void);
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50 * Update SystemCoreClock variable
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55 * @brief Updates the SystemCoreClock with current core Clock
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56 * retrieved from cpu registers.
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58 extern void SystemCoreClockUpdate (void);
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63 #endif /* __SYSTEM_LPC17xx_H */
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