1 /* 2 ** ################################################################### 3 ** Processor: LPC5504JHI48CPXXXX 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: LPC55S0x/LPC550x User manual Rev.0.3 14 August 2020 10 ** Version: rev. 1.0, 2020-04-09 11 ** Build: b220117 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 2016-2022 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 (2020-04-09) 29 ** Initial version based on Niobe4mini 30 ** 31 ** ################################################################### 32 */ 33 34 /*! 35 * @file LPC5504CPXXXX 36 * @version 1.0 37 * @date 2020-04-09 38 * @brief Device specific configuration file for LPC5504CPXXXX (header file) 39 * 40 * Provides a system configuration function and a global variable that contains 41 * the system frequency. It configures the device and initializes the oscillator 42 * (PLL) that is part of the microcontroller device. 43 */ 44 45 #ifndef _SYSTEM_LPC5504CPXXXX_H_ 46 #define _SYSTEM_LPC5504CPXXXX_H_ /**< Symbol preventing repeated inclusion */ 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 #include <stdint.h> 53 54 #define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */ 55 #define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */ 56 #define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */ 57 #define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */ 58 #define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */ 59 #define CLK_CLK_IN 16000000u /* Default CLK_IN pin clock */ 60 61 62 /** 63 * @brief System clock frequency (core clock) 64 * 65 * The system clock frequency supplied to the SysTick timer and the processor 66 * core clock. This variable can be used by the user application to setup the 67 * SysTick timer or configure other parameters. It may also be used by debugger to 68 * query the frequency of the debug timer or configure the trace clock speed 69 * SystemCoreClock is initialized with a correct predefined value. 70 */ 71 extern uint32_t SystemCoreClock; 72 73 /** 74 * @brief Setup the microcontroller system. 75 * 76 * Typically this function configures the oscillator (PLL) that is part of the 77 * microcontroller device. For systems with variable clock speed it also updates 78 * the variable SystemCoreClock. SystemInit is called from startup_device file. 79 */ 80 void SystemInit (void); 81 82 /** 83 * @brief Updates the SystemCoreClock variable. 84 * 85 * It must be called whenever the core clock is changed during program 86 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 87 * the current core clock. 88 */ 89 void SystemCoreClockUpdate (void); 90 91 /** 92 * @brief SystemInit function hook. 93 * 94 * This weak function allows to call specific initialization code during the 95 * SystemInit() execution.This can be used when an application specific code needs 96 * to be called as close to the reset entry as possible (for example the Multicore 97 * Manager MCMGR_EarlyInit() function call). 98 * NOTE: No global r/w variables can be used in this hook function because the 99 * initialization of these variables happens after this function. 100 */ 101 void SystemInitHook (void); 102 103 #ifdef __cplusplus 104 } 105 #endif 106 107 #endif /* _SYSTEM_LPC5504CPXXXX_H_ */ 108
