1 /* 2 ** ################################################################### 3 ** Processor: MCXC142VFM 4 ** Compilers: Freescale C/C++ for Embedded ARM 5 ** GNU C Compiler 6 ** IAR ANSI C/C++ Compiler for ARM 7 ** Keil ARM C/C++ Compiler 8 ** MCUXpresso Compiler 9 ** 10 ** Reference manual: MCXC242RM, Rev.1, Mar 2024 11 ** Version: rev. 1.6, 2016-06-24 12 ** Build: b240516 13 ** 14 ** Abstract: 15 ** Provides a system configuration function and a global variable that 16 ** contains the system frequency. It configures the device and initializes 17 ** the oscillator (PLL) that is part of the microcontroller device. 18 ** 19 ** Copyright 2016 Freescale Semiconductor, Inc. 20 ** Copyright 2016-2024 NXP 21 ** SPDX-License-Identifier: BSD-3-Clause 22 ** 23 ** http: www.nxp.com 24 ** mail: support@nxp.com 25 ** 26 ** Revisions: 27 ** - rev. 1.0 (2014-05-12) 28 ** Initial version. 29 ** - rev. 1.1 (2014-07-10) 30 ** UART0 - UART0 module renamed to UART2. 31 ** - rev. 1.2 (2014-08-12) 32 ** CRC - CRC register renamed to DATA. 33 ** - rev. 1.3 (2014-09-02) 34 ** USB - USB0_CTL0 was renamed to USB0_OTGCTL register. 35 ** USB - USB0_CTL1 was renamed to USB0_CTL register. 36 ** USB - Two new bitfields (STOP_ACK_DLY_EN, AHB_DLY_EN) was added to the USB0_KEEP_ALIVE_CTRL register. 37 ** - rev. 1.4 (2014-09-22) 38 ** FLEXIO - Offsets of the SHIFTBUFBIS registers were interchanged with offsets of the SHIFTBUFBBS registers. 39 ** SIM - Changed bitfield value MCGIRCLK to LIRC_CLK of bitfield CLKOUTSEL in SOPT2 register. 40 ** SIM - Removed bitfield DIEID in SDID register. 41 ** UART2 - Removed ED register. 42 ** UART2 - Removed MODEM register. 43 ** UART2 - Removed IR register. 44 ** UART2 - Removed PFIFO register. 45 ** UART2 - Removed CFIFO register. 46 ** UART2 - Removed SFIFO register. 47 ** UART2 - Removed TWFIFO register. 48 ** UART2 - Removed TCFIFO register. 49 ** UART2 - Removed RWFIFO register. 50 ** UART2 - Removed RCFIFO register. 51 ** USB - Removed bitfield REG_EN in CLK_RECOVER_IRC_EN register. 52 ** USB - Renamed USBEN bitfield of USB0_CTL was renamed to USBENSOFEN. 53 ** - rev. 1.5 (2016-02-02) 54 ** FGPIO - Add FGPIO registers. 55 ** - rev. 1.6 (2016-06-24) 56 ** USB - OTGCTL register was removed. 57 ** USB - Bit RESUME was added in CTL register. 58 ** 59 ** ################################################################### 60 */ 61 62 /*! 63 * @file MCXC142 64 * @version 1.6 65 * @date 2016-06-24 66 * @brief Device specific configuration file for MCXC142 (header file) 67 * 68 * Provides a system configuration function and a global variable that contains 69 * the system frequency. It configures the device and initializes the oscillator 70 * (PLL) that is part of the microcontroller device. 71 */ 72 73 #ifndef _SYSTEM_MCXC142_H_ 74 #define _SYSTEM_MCXC142_H_ /**< Symbol preventing repeated inclusion */ 75 76 #ifdef __cplusplus 77 extern "C" { 78 #endif 79 80 #include <stdint.h> 81 82 83 #ifndef DISABLE_WDOG 84 #define DISABLE_WDOG 1 85 #endif 86 87 #define ACK_ISOLATION 1 88 89 /* Define clock source values */ 90 #define CPU_XTAL_CLK_HZ 32768U /* Value of the external crystal or oscillator clock frequency in Hz */ 91 #define CPU_INT_FAST_CLK_HZ 48000000U /* Value of the fast internal oscillator clock frequency in Hz */ 92 #define CPU_INT_IRC_CLK_HZ 48000000U /* Value of the 48M internal oscillator clock frequency in Hz */ 93 94 /* Low power mode enable */ 95 /* SMC_PMPROT: AVLP=1,AVLLS=1 */ 96 #define SYSTEM_SMC_PMPROT_VALUE 0x2AU /* SMC_PMPROT */ 97 98 #define DEFAULT_SYSTEM_CLOCK 8000000U /* Default System clock value */ 99 #define CPU_INT_SLOW_CLK_HZ 8000000U /* Value of the slow internal oscillator clock frequency in Hz */ 100 101 102 103 /** 104 * @brief System clock frequency (core clock) 105 * 106 * The system clock frequency supplied to the SysTick timer and the processor 107 * core clock. This variable can be used by the user application to setup the 108 * SysTick timer or configure other parameters. It may also be used by debugger to 109 * query the frequency of the debug timer or configure the trace clock speed 110 * SystemCoreClock is initialized with a correct predefined value. 111 */ 112 extern uint32_t SystemCoreClock; 113 114 /** 115 * @brief Setup the microcontroller system. 116 * 117 * Typically this function configures the oscillator (PLL) that is part of the 118 * microcontroller device. For systems with variable clock speed it also updates 119 * the variable SystemCoreClock. SystemInit is called from startup_device file. 120 */ 121 void SystemInit (void); 122 123 /** 124 * @brief Updates the SystemCoreClock variable. 125 * 126 * It must be called whenever the core clock is changed during program 127 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 128 * the current core clock. 129 */ 130 void SystemCoreClockUpdate (void); 131 132 /** 133 * @brief SystemInit function hook. 134 * 135 * This weak function allows to call specific initialization code during the 136 * SystemInit() execution.This can be used when an application specific code needs 137 * to be called as close to the reset entry as possible (for example the Multicore 138 * Manager MCMGR_EarlyInit() function call). 139 * NOTE: No global r/w variables can be used in this hook function because the 140 * initialization of these variables happens after this function. 141 */ 142 void SystemInitHook (void); 143 144 #ifdef __cplusplus 145 } 146 #endif 147 148 #endif /* _SYSTEM_MCXC142_H_ */ 149
