/* | |
** ################################################################### | |
** Processors: LPC51U68JBD48 | |
** LPC51U68JBD64 | |
** | |
** Compilers: Keil ARM C/C++ Compiler | |
** GNU C Compiler | |
** IAR ANSI C/C++ Compiler for ARM | |
** MCUXpresso Compiler | |
** | |
** Reference manual: LPC51U68 User manual User manual Rev. 1.0 13 Dec 2017 | |
** Version: rev. 1.0, 2017-12-15 | |
** Build: b180802 | |
** | |
** Abstract: | |
** Provides a system configuration function and a global variable that | |
** contains the system frequency. It configures the device and initializes | |
** the oscillator (PLL) that is part of the microcontroller device. | |
** | |
** Copyright 2016 Freescale Semiconductor, Inc. | |
** Copyright 2016-2018 NXP | |
** | |
** SPDX-License-Identifier: BSD-3-Clause | |
** | |
** http: www.nxp.com | |
** mail: support@nxp.com | |
** | |
** Revisions: | |
** - rev. 1.0 (2017-12-15) | |
** Initial version. | |
** | |
** ################################################################### | |
*/ | |
/*! | |
* @file LPC51U68 | |
* @version 1.0 | |
* @date 2017-12-15 | |
* @brief Device specific configuration file for LPC51U68 (header file) | |
* | |
* Provides a system configuration function and a global variable that contains | |
* the system frequency. It configures the device and initializes the oscillator | |
* (PLL) that is part of the microcontroller device. | |
*/ | |
#ifndef _SYSTEM_LPC51U68_H_ | |
#define _SYSTEM_LPC51U68_H_ /**< Symbol preventing repeated inclusion */ | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
#include <stdint.h> | |
#define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */ | |
#define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */ | |
#define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */ | |
#define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */ | |
#define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */ | |
#define CLK_CLK_IN 0u /* Default CLK_IN pin clock */ | |
/** | |
* @brief System clock frequency (core clock) | |
* | |
* The system clock frequency supplied to the SysTick timer and the processor | |
* core clock. This variable can be used by the user application to setup the | |
* SysTick timer or configure other parameters. It may also be used by debugger to | |
* query the frequency of the debug timer or configure the trace clock speed | |
* SystemCoreClock is initialized with a correct predefined value. | |
*/ | |
extern uint32_t SystemCoreClock; | |
/** | |
* @brief Setup the microcontroller system. | |
* | |
* Typically this function configures the oscillator (PLL) that is part of the | |
* microcontroller device. For systems with variable clock speed it also updates | |
* the variable SystemCoreClock. SystemInit is called from startup_device file. | |
*/ | |
void SystemInit (void); | |
/** | |
* @brief Updates the SystemCoreClock variable. | |
* | |
* It must be called whenever the core clock is changed during program | |
* execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates | |
* the current core clock. | |
*/ | |
void SystemCoreClockUpdate (void); | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* _SYSTEM_LPC51U68_H_ */ |