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1/*
2** ###################################################################
3** Processor: LPC810M021FN8
4** Compilers: GNU C Compiler
5** IAR ANSI C/C++ Compiler for ARM
6** Keil ARM C/C++ Compiler
7** MCUXpresso Compiler
8**
9** Reference manual: LPC81x User manual Rev.1.6 2 April 2014
10** Version: rev. 1.2, 2017-06-08
11** Build: b200513
12**
13** Abstract:
14** Provides a system configuration function and a global variable that
15** contains the system frequency. It configures the device and initializes
16** the oscillator (PLL) that is part of the microcontroller device.
17**
18** Copyright 2016 Freescale Semiconductor, Inc.
19** Copyright 2016-2020 NXP
20** All rights reserved.
21**
22** SPDX-License-Identifier: BSD-3-Clause
23**
24** http: www.nxp.com
25** mail: [email protected]
26**
27** Revisions:
28** - rev. 1.0 (2016-08-12)
29** Initial version.
30** - rev. 1.1 (2016-11-25)
31** Update CANFD and Classic CAN register.
32** Add MAC TIMERSTAMP registers.
33** - rev. 1.2 (2017-06-08)
34** Remove RTC_CTRL_RTC_OSC_BYPASS.
35** SYSCON_ARMTRCLKDIV rename to SYSCON_ARMTRACECLKDIV.
36** Remove RESET and HALT from SYSCON_AHBCLKDIV.
37**
38** ###################################################################
39*/
40
41/*!
42 * @file LPC810
43 * @version 1.2
44 * @date 2017-06-08
45 * @brief Device specific configuration file for LPC810 (header file)
46 *
47 * Provides a system configuration function and a global variable that contains
48 * the system frequency. It configures the device and initializes the oscillator
49 * (PLL) that is part of the microcontroller device.
50 */
51
52#ifndef _SYSTEM_LPC810_H_
53#define _SYSTEM_LPC810_H_ /**< Symbol preventing repeated inclusion */
54
55#ifdef __cplusplus
56extern "C" {
57#endif
58
59#include <stdint.h>
60
61#define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */
62#define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz output (32k_clk */
63#define CLK_IRC_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */
64#define CLK_OSC_IN 12000000u /* Oscillator input */
65#define EXT_CLK_IN 0u /* ext clkin */
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_LPC810_H_ */