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1/*
2** ###################################################################
3** Processors: LPC5512JBD100
4** LPC5512JBD64
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: LPC55S1x/LPC551x User manual Rev.0.6 15 November 2019
12** Version: rev. 1.1, 2019-12-03
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 (2018-08-22)
31** Initial version based on v0.2UM
32** - rev. 1.1 (2019-12-03)
33** Initial version based on v0.6UM
34**
35** ###################################################################
36*/
37
38/*!
39 * @file LPC5512
40 * @version 1.1
41 * @date 2019-12-03
42 * @brief Device specific configuration file for LPC5512 (header file)
43 *
44 * Provides a system configuration function and a global variable that contains
45 * the system frequency. It configures the device and initializes the oscillator
46 * (PLL) that is part of the microcontroller device.
47 */
48
49#ifndef _SYSTEM_LPC5512_H_
50#define _SYSTEM_LPC5512_H_ /**< Symbol preventing repeated inclusion */
51
52#ifdef __cplusplus
53extern "C" {
54#endif
55
56#include <stdint.h>
57
58#define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */
59#define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */
60#define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */
61#define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */
62#define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */
63#define CLK_CLK_IN 16000000u /* Default CLK_IN pin clock */
64
65/**
66 * @brief System clock frequency (core clock)
67 *
68 * The system clock frequency supplied to the SysTick timer and the processor
69 * core clock. This variable can be used by the user application to setup the
70 * SysTick timer or configure other parameters. It may also be used by debugger to
71 * query the frequency of the debug timer or configure the trace clock speed
72 * SystemCoreClock is initialized with a correct predefined value.
73 */
74extern uint32_t SystemCoreClock;
75
76/**
77 * @brief Setup the microcontroller system.
78 *
79 * Typically this function configures the oscillator (PLL) that is part of the
80 * microcontroller device. For systems with variable clock speed it also updates
81 * the variable SystemCoreClock. SystemInit is called from startup_device file.
82 */
83void SystemInit(void);
84
85/**
86 * @brief Updates the SystemCoreClock variable.
87 *
88 * It must be called whenever the core clock is changed during program
89 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
90 * the current core clock.
91 */
92void SystemCoreClockUpdate(void);
93
94/**
95 * @brief SystemInit function hook.
96 *
97 * This weak function allows to call specific initialization code during the
98 * SystemInit() execution.This can be used when an application specific code needs
99 * to be called as close to the reset entry as possible (for example the Multicore
100 * Manager MCMGR_EarlyInit() function call).
101 * NOTE: No global r/w variables can be used in this hook function because the
102 * initialization of these variables happens after this function.
103 */
104void SystemInitHook(void);
105
106#ifdef __cplusplus
107}
108#endif
109
110#endif /* _SYSTEM_LPC5512_H_ */