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1/*
2** ###################################################################
3** Processors: LPC55S26JBD100
4** LPC55S26JBD64
5** LPC55S26JEV98
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: LPC55S6x/LPC55S2x/LPC552x User manual(UM11126) Rev.1.3 16 May 2019
13** Version: rev. 1.1, 2019-05-16
14** Build: b200418
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 (2018-08-22)
32** Initial version based on v0.2UM
33** - rev. 1.1 (2019-05-16)
34** Initial A1 version based on v1.3UM
35**
36** ###################################################################
37*/
38
39/*!
40 * @file LPC55S26
41 * @version 1.1
42 * @date 2019-05-16
43 * @brief Device specific configuration file for LPC55S26 (header file)
44 *
45 * Provides a system configuration function and a global variable that contains
46 * the system frequency. It configures the device and initializes the oscillator
47 * (PLL) that is part of the microcontroller device.
48 */
49
50#ifndef _SYSTEM_LPC55S26_H_
51#define _SYSTEM_LPC55S26_H_ /**< Symbol preventing repeated inclusion */
52
53#ifdef __cplusplus
54extern "C" {
55#endif
56
57#include <stdint.h>
58
59#define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */
60#define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */
61#define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */
62#define CLK_FRO_48MHZ 48000000u /* FRO 48 MHz (fro_48m) */
63#define CLK_FRO_96MHZ 96000000u /* FRO 96 MHz (fro_96m) */
64#define CLK_CLK_IN 16000000u /* Default CLK_IN pin clock */
65
66
67/**
68 * @brief System clock frequency (core clock)
69 *
70 * The system clock frequency supplied to the SysTick timer and the processor
71 * core clock. This variable can be used by the user application to setup the
72 * SysTick timer or configure other parameters. It may also be used by debugger to
73 * query the frequency of the debug timer or configure the trace clock speed
74 * SystemCoreClock is initialized with a correct predefined value.
75 */
76extern uint32_t SystemCoreClock;
77
78/**
79 * @brief Setup the microcontroller system.
80 *
81 * Typically this function configures the oscillator (PLL) that is part of the
82 * microcontroller device. For systems with variable clock speed it also updates
83 * the variable SystemCoreClock. SystemInit is called from startup_device file.
84 */
85void SystemInit (void);
86
87/**
88 * @brief Updates the SystemCoreClock variable.
89 *
90 * It must be called whenever the core clock is changed during program
91 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
92 * the current core clock.
93 */
94void SystemCoreClockUpdate (void);
95
96/**
97 * @brief SystemInit function hook.
98 *
99 * This weak function allows to call specific initialization code during the
100 * SystemInit() execution.This can be used when an application specific code needs
101 * to be called as close to the reset entry as possible (for example the Multicore
102 * Manager MCMGR_EarlyInit() function call).
103 * NOTE: No global r/w variables can be used in this hook function because the
104 * initialization of these variables happens after this function.
105 */
106void SystemInitHook (void);
107
108#ifdef __cplusplus
109}
110#endif
111
112#endif /* _SYSTEM_LPC55S26_H_ */