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1/*
2** ###################################################################
3** Processors: LPC802M001JDH16
4** LPC802M001JDH20
5** LPC802M001JHI33
6** LPC802M011JDH20
7** LPC802UK
8**
9** Compilers: GNU C Compiler
10** IAR ANSI C/C++ Compiler for ARM
11** Keil ARM C/C++ Compiler
12** MCUXpresso Compiler
13**
14** Reference manual: LPC802 User manual Rev.1.0 1 Dec 2017
15** Version: rev. 1.0, 2018-01-09
16** Build: b200513
17**
18** Abstract:
19** Provides a system configuration function and a global variable that
20** contains the system frequency. It configures the device and initializes
21** the oscillator (PLL) that is part of the microcontroller device.
22**
23** Copyright 2016 Freescale Semiconductor, Inc.
24** Copyright 2016-2020 NXP
25** All rights reserved.
26**
27** SPDX-License-Identifier: BSD-3-Clause
28**
29** http: www.nxp.com
30** mail: [email protected]
31**
32** Revisions:
33** - rev. 1.0 (2018-01-09)
34** Initial version.
35**
36** ###################################################################
37*/
38
39/*!
40 * @file LPC802
41 * @version 1.0
42 * @date 2018-01-09
43 * @brief Device specific configuration file for LPC802 (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_LPC802_H_
51#define _SYSTEM_LPC802_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_OSC_IN 12000000u /* Oscillator input */
63#define CLK_OSC_LP 1000000u /* Low power oscillator */
64
65volatile extern uint32_t g_Fro_Osc_Freq;
66
67
68/**
69 * @brief System clock frequency (core clock)
70 *
71 * The system clock frequency supplied to the SysTick timer and the processor
72 * core clock. This variable can be used by the user application to setup the
73 * SysTick timer or configure other parameters. It may also be used by debugger to
74 * query the frequency of the debug timer or configure the trace clock speed
75 * SystemCoreClock is initialized with a correct predefined value.
76 */
77extern uint32_t SystemCoreClock;
78
79/**
80 * @brief Setup the microcontroller system.
81 *
82 * Typically this function configures the oscillator (PLL) that is part of the
83 * microcontroller device. For systems with variable clock speed it also updates
84 * the variable SystemCoreClock. SystemInit is called from startup_device file.
85 */
86void SystemInit (void);
87
88/**
89 * @brief Updates the SystemCoreClock variable.
90 *
91 * It must be called whenever the core clock is changed during program
92 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
93 * the current core clock.
94 */
95void SystemCoreClockUpdate (void);
96
97/**
98 * @brief SystemInit function hook.
99 *
100 * This weak function allows to call specific initialization code during the
101 * SystemInit() execution.This can be used when an application specific code needs
102 * to be called as close to the reset entry as possible (for example the Multicore
103 * Manager MCMGR_EarlyInit() function call).
104 * NOTE: No global r/w variables can be used in this hook function because the
105 * initialization of these variables happens after this function.
106 */
107void SystemInitHook (void);
108
109#ifdef __cplusplus
110}
111#endif
112
113#endif /* _SYSTEM_LPC802_H_ */