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1/*
2** ###################################################################
3** Processors: LPC54S016JBD100
4** LPC54S016JBD208
5** LPC54S016JET180
6**
7** Compilers: GNU C Compiler
8** IAR ANSI C/C++ Compiler for ARM
9** Keil ARM C/C++ Compiler
10** MCUXpresso Compiler
11**
12** Reference manual: LPC540xx/LPC54S0xx User manual Rev.0.8 5 June 2018
13** Version: rev. 1.0, 2018-04-20
14** Build: b201015
15**
16** Abstract:
17** Provides a system configuration function and a global variable that
18** contains the system frequency. It configures the device and initializes
19** the oscillator (PLL) that is part of the microcontroller device.
20**
21** Copyright 2016 Freescale Semiconductor, Inc.
22** Copyright 2016-2020 NXP
23** All rights reserved.
24**
25** SPDX-License-Identifier: BSD-3-Clause
26**
27** http: www.nxp.com
28** mail: [email protected]
29**
30** Revisions:
31** - rev. 1.0 (2018-04-20)
32** Initial version.
33**
34** ###################################################################
35*/
36
37/*!
38 * @file LPC54S016
39 * @version 1.0
40 * @date 2018-04-20
41 * @brief Device specific configuration file for LPC54S016 (header file)
42 *
43 * Provides a system configuration function and a global variable that contains
44 * the system frequency. It configures the device and initializes the oscillator
45 * (PLL) that is part of the microcontroller device.
46 */
47
48#ifndef _SYSTEM_LPC54S016_H_
49#define _SYSTEM_LPC54S016_H_ /**< Symbol preventing repeated inclusion */
50
51#ifdef __cplusplus
52extern "C" {
53#endif
54
55#include <stdint.h>
56
57#define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */
58#define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */
59#define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */
60#define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */
61#define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */
62#define CLK_CLK_IN 0u /* Default CLK_IN pin clock */
63
64/**
65 * @brief System clock frequency (core clock)
66 *
67 * The system clock frequency supplied to the SysTick timer and the processor
68 * core clock. This variable can be used by the user application to setup the
69 * SysTick timer or configure other parameters. It may also be used by debugger to
70 * query the frequency of the debug timer or configure the trace clock speed
71 * SystemCoreClock is initialized with a correct predefined value.
72 */
73extern uint32_t SystemCoreClock;
74
75/**
76 * @brief Setup the microcontroller system.
77 *
78 * Typically this function configures the oscillator (PLL) that is part of the
79 * microcontroller device. For systems with variable clock speed it also updates
80 * the variable SystemCoreClock. SystemInit is called from startup_device file.
81 */
82void SystemInit(void);
83
84/**
85 * @brief Updates the SystemCoreClock variable.
86 *
87 * It must be called whenever the core clock is changed during program
88 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
89 * the current core clock.
90 */
91void SystemCoreClockUpdate(void);
92
93/**
94 * @brief SystemInit function hook.
95 *
96 * This weak function allows to call specific initialization code during the
97 * SystemInit() execution.This can be used when an application specific code needs
98 * to be called as close to the reset entry as possible (for example the Multicore
99 * Manager MCMGR_EarlyInit() function call).
100 * NOTE: No global r/w variables can be used in this hook function because the
101 * initialization of these variables happens after this function.
102 */
103void SystemInitHook(void);
104
105#ifdef __cplusplus
106}
107#endif
108
109#endif /* _SYSTEM_LPC54S016_H_ */