1 /*
2 ** ###################################################################
3 ** Processors: LPC5536JBD100
4 ** LPC5536JBD64
5 ** LPC5536JHI48
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: LPC55S3x Reference Manual Rev. DraftG, 07/2021
13 ** Version: rev. 1.1, 2021-08-04
14 ** Build: b210806
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 2016-2021 NXP
23 ** All rights reserved.
24 **
25 ** SPDX-License-Identifier: BSD-3-Clause
26 **
27 ** http: www.nxp.com
28 ** mail: support@nxp.com
29 **
30 ** Revisions:
31 ** - rev. 1.0 (2021-04-12)
32 ** Initial version based on RM DraftF
33 ** - rev. 1.1 (2021-08-04)
34 ** Initial version based on RM DraftG
35 **
36 ** ###################################################################
37 */
38
39 /*!
40 * @file LPC5536
41 * @version 1.1
42 * @date 2021-08-04
43 * @brief Device specific configuration file for LPC5536 (implementation 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 #include <stdint.h>
51 #include "fsl_device_registers.h"
52
53
54
55 /* ----------------------------------------------------------------------------
56 -- Core clock
57 ---------------------------------------------------------------------------- */
58
59 uint32_t SystemCoreClock = DEFAULT_SYSTEM_CLOCK;
60
61 /* ----------------------------------------------------------------------------
62 -- SystemInit()
63 ---------------------------------------------------------------------------- */
64
SystemInit(void)65 __attribute__ ((weak)) void SystemInit (void) {
66 #if ((__FPU_PRESENT == 1) && (__FPU_USED == 1))
67 SCB->CPACR |= ((3UL << 10*2) | (3UL << 11*2)); /* set CP10, CP11 Full Access in Secure mode */
68 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
69 SCB_NS->CPACR |= ((3UL << 10*2) | (3UL << 11*2)); /* set CP10, CP11 Full Access in Non-secure mode */
70 #endif /* (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U) */
71 #endif /* ((__FPU_PRESENT == 1) && (__FPU_USED == 1)) */
72
73 SCB->CPACR |= ((3UL << 0*2) | (3UL << 1*2)); /* set CP0, CP1 Full Access in Secure mode (enable PowerQuad) */
74 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
75 SCB_NS->CPACR |= ((3UL << 0*2) | (3UL << 1*2)); /* set CP0, CP1 Full Access in Normal mode (enable PowerQuad) */
76 #endif /* (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U) */
77
78 SCB->NSACR |= ((3UL << 0) | (3UL << 10)); /* enable CP0, CP1, CP10, CP11 Non-secure Access */
79
80 #if defined(__MCUXPRESSO)
81 extern void(*const g_pfnVectors[]) (void);
82 SCB->VTOR = (uint32_t) &g_pfnVectors;
83 #else
84 extern void *__Vectors;
85 SCB->VTOR = (uint32_t) &__Vectors;
86 #endif
87 SYSCON->TRACECLKDIV = 0;
88 /* Optionally enable RAM banks that may be off by default at reset */
89 #if !defined(DONT_ENABLE_DISABLED_RAMBANKS)
90 SYSCON->AHBCLKCTRLSET[0] = SYSCON_AHBCLKCTRL0_SRAM_CTRL1_MASK | SYSCON_AHBCLKCTRL0_SRAM_CTRL2_MASK
91 | SYSCON_AHBCLKCTRL0_SRAM_CTRL3_MASK | SYSCON_AHBCLKCTRL0_SRAM_CTRL4_MASK;
92 #endif
93 /* enable the flash cache LPCAC */
94 SYSCON->LPCAC_CTRL &= ~SYSCON_LPCAC_CTRL_DIS_LPCAC_MASK;
95
96 SystemInitHook();
97 }
98
99 /* ----------------------------------------------------------------------------
100 -- SystemCoreClockUpdate()
101 ---------------------------------------------------------------------------- */
102
SystemCoreClockUpdate(void)103 void SystemCoreClockUpdate (void) {
104
105 }
106
107 /* ----------------------------------------------------------------------------
108 -- SystemInitHook()
109 ---------------------------------------------------------------------------- */
110
SystemInitHook(void)111 __attribute__ ((weak)) void SystemInitHook (void) {
112 /* Void implementation of the weak function. */
113 }
114
