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1/*
2** ###################################################################
3** Processors: LPC54S005JBD100
4** LPC54S005JET100
5**
6** Compilers: GNU C Compiler
7** IAR ANSI C/C++ Compiler for ARM
8** Keil ARM C/C++ Compiler
9** MCUXpresso Compiler
10**
11** Reference manual: LPC540xx/LPC54S0xx User manual Rev.0.8 5 June 2018
12** Version: rev. 1.0, 2018-04-20
13** Build: b201015
14**
15** Abstract:
16** Provides a system configuration function and a global variable that
17** contains the system frequency. It configures the device and initializes
18** the oscillator (PLL) that is part of the microcontroller device.
19**
20** Copyright 2016 Freescale Semiconductor, Inc.
21** Copyright 2016-2020 NXP
22** All rights reserved.
23**
24** SPDX-License-Identifier: BSD-3-Clause
25**
26** http: www.nxp.com
27** mail: [email protected]
28**
29** Revisions:
30** - rev. 1.0 (2018-04-20)
31** Initial version.
32**
33** ###################################################################
34*/
35
36/*!
37 * @file LPC54S005
38 * @version 1.0
39 * @date 2018-04-20
40 * @brief Device specific configuration file for LPC54S005 (header file)
41 *
42 * Provides a system configuration function and a global variable that contains
43 * the system frequency. It configures the device and initializes the oscillator
44 * (PLL) that is part of the microcontroller device.
45 */
46
47#ifndef _SYSTEM_LPC54S005_H_
48#define _SYSTEM_LPC54S005_H_ /**< Symbol preventing repeated inclusion */
49
50#ifdef __cplusplus
51extern "C" {
52#endif
53
54#include <stdint.h>
55
56#define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */
57#define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */
58#define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */
59#define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */
60#define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */
61#define CLK_CLK_IN 0u /* Default CLK_IN pin clock */
62
63/**
64 * @brief System clock frequency (core clock)
65 *
66 * The system clock frequency supplied to the SysTick timer and the processor
67 * core clock. This variable can be used by the user application to setup the
68 * SysTick timer or configure other parameters. It may also be used by debugger to
69 * query the frequency of the debug timer or configure the trace clock speed
70 * SystemCoreClock is initialized with a correct predefined value.
71 */
72extern uint32_t SystemCoreClock;
73
74/**
75 * @brief Setup the microcontroller system.
76 *
77 * Typically this function configures the oscillator (PLL) that is part of the
78 * microcontroller device. For systems with variable clock speed it also updates
79 * the variable SystemCoreClock. SystemInit is called from startup_device file.
80 */
81void SystemInit(void);
82
83/**
84 * @brief Updates the SystemCoreClock variable.
85 *
86 * It must be called whenever the core clock is changed during program
87 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
88 * the current core clock.
89 */
90void SystemCoreClockUpdate(void);
91
92/**
93 * @brief SystemInit function hook.
94 *
95 * This weak function allows to call specific initialization code during the
96 * SystemInit() execution.This can be used when an application specific code needs
97 * to be called as close to the reset entry as possible (for example the Multicore
98 * Manager MCMGR_EarlyInit() function call).
99 * NOTE: No global r/w variables can be used in this hook function because the
100 * initialization of these variables happens after this function.
101 */
102void SystemInitHook(void);
103
104#ifdef __cplusplus
105}
106#endif
107
108#endif /* _SYSTEM_LPC54S005_H_ */