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1/*
2** ###################################################################
3** Processors: MCIMX7U5CVP06
4** MCIMX7U5DVK07
5** MCIMX7U5DVP07
6**
7** Compilers: GNU C Compiler
8** IAR ANSI C/C++ Compiler for ARM
9** Keil ARM C/C++ Compiler
10**
11** Reference manual: IMX7ULPRM, Rev. 0, Nov. 2018
12** Version: rev. 7.0, 2018-11-05
13** Build: b200408
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 (2016-04-13)
31** Initial version.
32** - rev. 2.0 (2016-07-19)
33** RevC Header ER
34** - rev. 3.0 (2017-02-28)
35** RevD Header ER
36** - rev. 4.0 (2017-05-02)
37** RevE Header ER
38** - rev. 5.0 (2017-12-22)
39** RevA(B0) Header GA
40** - rev. 6.0 (2018-02-01)
41** RevB(B0) Header GA
42** - rev. 7.0 (2018-11-05)
43** RevA(B1) Header
44**
45** ###################################################################
46*/
47
48/*!
49 * @file MCIMX7U5_cm4
50 * @version 7.0
51 * @date 2018-11-05
52 * @brief Device specific configuration file for MCIMX7U5_cm4 (header file)
53 *
54 * Provides a system configuration function and a global variable that contains
55 * the system frequency. It configures the device and initializes the oscillator
56 * (PLL) that is part of the microcontroller device.
57 */
58
59#ifndef _SYSTEM_MCIMX7U5_cm4_H_
60#define _SYSTEM_MCIMX7U5_cm4_H_ /**< Symbol preventing repeated inclusion */
61
62#ifdef __cplusplus
63extern "C" {
64#endif
65
66#include <stdint.h>
67
68
69
70/* i.MX7ULP Definitions */
71#ifndef DISABLE_WDOG
72 #define DISABLE_WDOG 1
73#endif
74/* Define clock source values */
75#define CPU_XTAL_SOSC_CLK_HZ 24000000u /* Value of the external System Oscillator Clock(SOSC) frequency in Hz */
76#define CPU_XTAL_LVDS_CLK_HZ 24000000u /* Value of the external LVDS Clock frequency in Hz */
77#define DEFAULT_SYSTEM_CLOCK 100000000u /* Default System clock value */
78
79
80/**
81 * @brief System clock frequency (core clock)
82 *
83 * The system clock frequency supplied to the SysTick timer and the processor
84 * core clock. This variable can be used by the user application to setup the
85 * SysTick timer or configure other parameters. It may also be used by debugger to
86 * query the frequency of the debug timer or configure the trace clock speed
87 * SystemCoreClock is initialized with a correct predefined value.
88 */
89extern uint32_t SystemCoreClock;
90
91/**
92 * @brief Setup the microcontroller system.
93 *
94 * Typically this function configures the oscillator (PLL) that is part of the
95 * microcontroller device. For systems with variable clock speed it also updates
96 * the variable SystemCoreClock. SystemInit is called from startup_device file.
97 */
98void SystemInit (void);
99
100/**
101 * @brief Updates the SystemCoreClock variable.
102 *
103 * It must be called whenever the core clock is changed during program
104 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
105 * the current core clock.
106 */
107void SystemCoreClockUpdate (void);
108
109/**
110 * @brief SystemInit function hook.
111 *
112 * This weak function allows to call specific initialization code during the
113 * SystemInit() execution.This can be used when an application specific code needs
114 * to be called as close to the reset entry as possible (for example the Multicore
115 * Manager MCMGR_EarlyInit() function call).
116 * NOTE: No global r/w variables can be used in this hook function because the
117 * initialization of these variables happens after this function.
118 */
119void SystemInitHook (void);
120
121#ifdef __cplusplus
122}
123#endif
124
125#endif /* _SYSTEM_MCIMX7U5_cm4_H_ */