177 lines
6.4 KiB
C
177 lines
6.4 KiB
C
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/*
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** ###################################################################
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** Processors: MCIMX6Y2CVM05
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** MCIMX6Y2CVM08
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** MCIMX6Y2DVM05
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** MCIMX6Y2DVM09
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**
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** Compilers: Keil ARM C/C++ Compiler
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** GNU C Compiler
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** IAR ANSI C/C++ Compiler for ARM
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**
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** Reference manual: IMX6ULLRM, Rev. 1, Feb. 2017
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** Version: rev. 3.0, 2017-02-28
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** Build: b170410
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**
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** Abstract:
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** Provides a system configuration function and a global variable that
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** contains the system frequency. It configures the device and initializes
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** the oscillator (PLL) that is part of the microcontroller device.
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**
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** Copyright 2016 Freescale Semiconductor, Inc.
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** Copyright 2016-2017 NXP
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** Redistribution and use in source and binary forms, with or without modification,
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** are permitted provided that the following conditions are met:
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**
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** o Redistributions of source code must retain the above copyright notice, this list
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** of conditions and the following disclaimer.
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**
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** o Redistributions in binary form must reproduce the above copyright notice, this
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** list of conditions and the following disclaimer in the documentation and/or
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** other materials provided with the distribution.
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**
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** o Neither the name of the copyright holder nor the names of its
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** contributors may be used to endorse or promote products derived from this
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** software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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** ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**
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** http: www.nxp.com
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** mail: support@nxp.com
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**
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** Revisions:
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** - rev. 1.0 (2015-12-18)
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** Initial version.
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** - rev. 2.0 (2016-08-02)
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** Rev.B Header GA
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** - rev. 3.0 (2017-02-28)
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** Rev.1 Header GA
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**
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** ###################################################################
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*/
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/*!
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* @file MCIMX6Y2
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* @version 3.0
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* @date 2017-02-28
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* @brief Device specific configuration file for MCIMX6Y2 (header file)
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*
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* Provides a system configuration function and a global variable that contains
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* the system frequency. It configures the device and initializes the oscillator
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* (PLL) that is part of the microcontroller device.
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*/
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#ifndef _SYSTEM_MCIMX6Y2_H_
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#define _SYSTEM_MCIMX6Y2_H_ /**< Symbol preventing repeated inclusion */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#define DEFAULT_SYSTEM_CLOCK 528000000u /* Default System clock value */
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typedef void (*system_irq_handler_t) (uint32_t giccIar, void *param);
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/**
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* @brief IRQ handle for specific IRQ
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*/
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typedef struct _sys_irq_handle
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{
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system_irq_handler_t irqHandler; /**< IRQ handler for specific IRQ */
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void *userParam; /**< User param for handler callback */
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} sys_irq_handle_t;
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/**
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* @brief System clock frequency (core clock)
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*
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* The system clock frequency supplied to the SysTick timer and the processor
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* core clock. This variable can be used by the user application to setup the
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* SysTick timer or configure other parameters. It may also be used by debugger to
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* query the frequency of the debug timer or configure the trace clock speed
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* SystemCoreClock is initialized with a correct predefined value.
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*/
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extern uint32_t SystemCoreClock;
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/**
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* @brief Setup the microcontroller system.
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*
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* Typically this function configures the oscillator (PLL) that is part of the
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* microcontroller device. For systems with variable clock speed it also updates
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* the variable SystemCoreClock. SystemInit is called from startup_device file.
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*/
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void SystemInit (void);
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/**
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* @brief Updates the SystemCoreClock variable.
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*
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* It must be called whenever the core clock is changed during program
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* execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
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* the current core clock.
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*/
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void SystemCoreClockUpdate (void);
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/**
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* @brief Initialize IRQ table, set default handlers
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*/
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void SystemInitIrqTable (void);
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/**
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* @brief Install IRQ handler for specific IRQ
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*
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* It can't be called at interrupt context to avoid IRQ table corrupt during interrupt preemption
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*
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* @param irq IRQ number corresponds to the installed handler
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* @param handler IRQ handler for the IRQ number
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* @param userParam User specified parameter for IRQ handler callback
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*/
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void SystemInstallIrqHandler (IRQn_Type irq, system_irq_handler_t handler, void *userParam);
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/**
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* @brief System IRQ handler which dispatches specific IRQ to corresponding registered handler.
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*
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* It is called from IRQ exception context and dispatches to registered handler according to
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* GICC_IAR interrupt number.
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* The default implementation is weak and user can override this function with his own SystemIrqHandler.
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*
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* @param giccIar IRQ acknowledge value read from GICC_IAR
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*/
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void SystemIrqHandler (uint32_t giccIar);
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/**
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* @brief Get IRQ nesting level of current context.
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*
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* If the return value is 0, then the context is not ISR, otherwise the context is ISR.
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*
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* @return IRQ nesting level
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*/
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uint32_t SystemGetIRQNestingLevel (void);
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/**
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* @brief Setup systick for RTOS system.
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*
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* @param tickRateHz Tick number per second
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* @param tickHandler IRQ callback handler for tick
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* @param intPriority IRQ interrupt priority (the smaller, the higher priority)
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*/
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void SystemSetupSystick (uint32_t tickRateHz, void *tickHandler, uint32_t intPriority);
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/**
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* @brief Clear systick flag status so that next tick interrupt may occur.
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*/
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void SystemClearSystickFlag (void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYSTEM_MCIMX6Y2_H_ */
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