1 /* 2 ** ################################################################### 3 ** Processor: LPC54628J512ET180 4 ** Compilers: GNU C Compiler 5 ** IAR ANSI C/C++ Compiler for ARM 6 ** Keil ARM C/C++ Compiler 7 ** MCUXpresso Compiler 8 ** 9 ** Reference manual: LPC546xx User manual Rev.1.9 5 June 2017 10 ** Version: rev. 1.2, 2017-06-08 11 ** Build: b200304 12 ** 13 ** Abstract: 14 ** Provides a system configuration function and a global variable that 15 ** contains the system frequency. It configures the device and initializes 16 ** the oscillator (PLL) that is part of the microcontroller device. 17 ** 18 ** Copyright 2016 Freescale Semiconductor, Inc. 19 ** Copyright 2016-2020 NXP 20 ** All rights reserved. 21 ** 22 ** SPDX-License-Identifier: BSD-3-Clause 23 ** 24 ** http: www.nxp.com 25 ** mail: support@nxp.com 26 ** 27 ** Revisions: 28 ** - rev. 1.0 (2016-08-12) 29 ** Initial version. 30 ** - rev. 1.1 (2016-11-25) 31 ** Update CANFD and Classic CAN register. 32 ** Add MAC TIMERSTAMP registers. 33 ** - rev. 1.2 (2017-06-08) 34 ** Remove RTC_CTRL_RTC_OSC_BYPASS. 35 ** SYSCON_ARMTRCLKDIV rename to SYSCON_ARMTRACECLKDIV. 36 ** Remove RESET and HALT from SYSCON_AHBCLKDIV. 37 ** 38 ** ################################################################### 39 */ 40 41 /*! 42 * @file LPC54628 43 * @version 1.2 44 * @date 2017-06-08 45 * @brief Device specific configuration file for LPC54628 (header file) 46 * 47 * Provides a system configuration function and a global variable that contains 48 * the system frequency. It configures the device and initializes the oscillator 49 * (PLL) that is part of the microcontroller device. 50 */ 51 52 #ifndef _SYSTEM_LPC54628_H_ 53 #define _SYSTEM_LPC54628_H_ /**< Symbol preventing repeated inclusion */ 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 #include <stdint.h> 60 61 #define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */ 62 #define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */ 63 #define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */ 64 #define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */ 65 #define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */ 66 #define CLK_CLK_IN 0u /* Default CLK_IN pin clock */ 67 68 69 /** 70 * @brief System clock frequency (core clock) 71 * 72 * The system clock frequency supplied to the SysTick timer and the processor 73 * core clock. This variable can be used by the user application to setup the 74 * SysTick timer or configure other parameters. It may also be used by debugger to 75 * query the frequency of the debug timer or configure the trace clock speed 76 * SystemCoreClock is initialized with a correct predefined value. 77 */ 78 extern uint32_t SystemCoreClock; 79 80 /** 81 * @brief Setup the microcontroller system. 82 * 83 * Typically this function configures the oscillator (PLL) that is part of the 84 * microcontroller device. For systems with variable clock speed it also updates 85 * the variable SystemCoreClock. SystemInit is called from startup_device file. 86 */ 87 void SystemInit (void); 88 89 /** 90 * @brief Updates the SystemCoreClock variable. 91 * 92 * It must be called whenever the core clock is changed during program 93 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 94 * the current core clock. 95 */ 96 void SystemCoreClockUpdate (void); 97 98 /** 99 * @brief SystemInit function hook. 100 * 101 * This weak function allows to call specific initialization code during the 102 * SystemInit() execution.This can be used when an application specific code needs 103 * to be called as close to the reset entry as possible (for example the Multicore 104 * Manager MCMGR_EarlyInit() function call). 105 * NOTE: No global r/w variables can be used in this hook function because the 106 * initialization of these variables happens after this function. 107 */ 108 void SystemInitHook (void); 109 110 #ifdef __cplusplus 111 } 112 #endif 113 114 #endif /* _SYSTEM_LPC54628_H_ */ 115
