e3f9ee839a
You can either set it once up front, or set variable_frequency on custruction to indicate that the frequency must be able to change. This informs whether a timer can be shared amongst pins. This also adds persistent clock calibration on atmel-samd. Once the device has synced its clock frequency over USB it will remember that config value until USB is used again. This helps ensure the clock frequency is similar on and off USB. Lastly, this also corrects time.sleep() when on USB by correcting the tick counter.
728 lines
22 KiB
C
728 lines
22 KiB
C
/**
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* \file
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*
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* \brief SAM System related functionality
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*
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* Copyright (C) 2012-2015 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* \asf_license_stop
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*
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*/
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/*
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* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
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*/
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#ifndef SYSTEM_H_INCLUDED
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#define SYSTEM_H_INCLUDED
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#include <compiler.h>
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#include <clock.h>
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#include <gclk.h>
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#include <pinmux.h>
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#include <power.h>
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#include <reset.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \defgroup asfdoc_sam0_system_group SAM System (SYSTEM) Driver
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*
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* This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration
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* and management of the device's system relation functionality, necessary for
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* the basic device operation. This is not limited to a single peripheral, but
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* extends across multiple hardware peripherals.
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*
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* The following peripherals are used by this module:
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* \if DEVICE_SAML21_SYSTEM_SUPPORT
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* - PM (Power Manager)
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* - RSTC (Reset Controller)
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* - SUPC (Supply Controller)
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* \endif
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* \if DEVICE_SAMC21_SYSTEM_SUPPORT
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* - PM (Power Manager)
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* - RSTC (Reset Controller)
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* - SUPC (Supply Controller)
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* \endif
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* \if DEVICE_SAMD21_SYSTEM_SUPPORT
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* - SYSCTRL (System Control)
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* - PM (Power Manager)
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* \endif
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*
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* The following devices can use this module:
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* \if DEVICE_SAML21_SYSTEM_SUPPORT
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* - Atmel | SMART SAM L21
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* \endif
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* \if DEVICE_SAMC21_SYSTEM_SUPPORT
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* - Atmel | SMART SAM C20/C21
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* \endif
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* \if DEVICE_SAMD21_SYSTEM_SUPPORT
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* - Atmel | SMART SAM D20/D21
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* - Atmel | SMART SAM R21
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* - Atmel | SMART SAM D09/D10/D11
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* - Atmel | SMART SAM DA1
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* \endif
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*
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* The outline of this documentation is as follows:
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* - \ref asfdoc_sam0_system_prerequisites
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* - \ref asfdoc_sam0_system_module_overview
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* - \ref asfdoc_sam0_system_special_considerations
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* - \ref asfdoc_sam0_system_extra_info
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* - \ref asfdoc_sam0_system_examples
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* - \ref asfdoc_sam0_system_api_overview
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*
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*
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* \section asfdoc_sam0_system_prerequisites Prerequisites
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*
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* There are no prerequisites for this module.
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*
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*
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* \section asfdoc_sam0_system_module_overview Module Overview
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*
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* The System driver provides a collection of interfaces between the user
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* application logic, and the core device functionality (such as clocks, reset
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* cause determination, etc.) that is required for all applications. It contains
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* a number of sub-modules that control one specific aspect of the device:
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*
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* - System Core (this module)
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* - \ref asfdoc_sam0_system_clock_group "System Clock Control" (sub-module)
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* - \ref asfdoc_sam0_system_interrupt_group "System Interrupt Control" (sub-module)
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* - \ref asfdoc_sam0_system_pinmux_group "System Pin Multiplexer Control" (sub-module)
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*
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*
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* \if DEVICE_SAML21_SYSTEM_SUPPORT
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* \subsection asfdoc_sam0_system_module_overview_vreg_l21 Voltage Regulator
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* The SAM device controls the voltage regulators for the core (VDDCORE) and
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* backup (VDDBU) domains. It sets the voltage regulators according to the sleep
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* modes, the performance level, or the user configuration.
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*
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* In active mode, the voltage regulator can be chosen on the fly between a LDO
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* or a Buck converter. In standby mode, the low power voltage regulator is used
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* to supply VDDCORE.
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*
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* \subsection asfdoc_sam0_system_module_overview_bbps Battery Backup Power Switch
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* The SAM device supports connection of a battery backup to the VBAT power pin.
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* It includes functionality that enables automatic power switching between main
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* power and battery backup power. This will ensure power to the backup domain,
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* when the main battery or power source is unavailable.
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* \endif
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*
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* \if DEVICE_SAMC21_SYSTEM_SUPPORT
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* \subsection asfdoc_sam0_system_module_overview_vreg_c21 Voltage Regulator
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* The SAM device controls the voltage regulators for the core (VDDCORE). It sets
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* the voltage regulators according to the sleep modes.
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*
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* There are a selectable reference voltage and voltage dependent on the temperature
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* which can be used by analog modules like the ADC.
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* \endif
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*
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* \subsection asfdoc_sam0_system_module_overview_vref Voltage References
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* The various analog modules within the SAM devices (such as AC, ADC, and
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* DAC) require a voltage reference to be configured to act as a reference point
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* for comparisons and conversions.
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*
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* The SAM devices contain multiple references, including an internal
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* temperature sensor and a fixed band-gap voltage source. When enabled, the
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* associated voltage reference can be selected within the desired peripheral
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* where applicable.
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*
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* \subsection asfdoc_sam0_system_module_overview_reset_cause System Reset Cause
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* In some applications there may be a need to execute a different program
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* flow based on how the device was reset. For example, if the cause of reset
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* was the Watchdog timer (WDT), this might indicate an error in the application,
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* and a form of error handling or error logging might be needed.
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*
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* For this reason, an API is provided to retrieve the cause of the last system
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* reset, so that appropriate action can be taken.
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*
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* \if DEVICE_SAML21_SYSTEM_SUPPORT
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* There are three groups of reset sources:
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* - Power supply reset: Resets caused by an electrical issue. It covers POR and BOD reset.
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* - User reset: Resets caused by the application. It covers external reset,
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* system reset, and watchdog reset.
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* - Backup reset: Resets caused by a backup mode exit condition.
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*
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* \subsection asfdoc_sam0_system_module_overview_performance_level Performance Level
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* Performance level allows the user to adjust the regulator output voltage to reduce
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* power consumption. The user can on the fly select the most suitable performance
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* level, depending on the application demands.
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*
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* The SAM device can operate at two different performance levels (PL0 and PL2).
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* When operating at PL0, the voltage applied on the full logic area is reduced
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* by voltage scaling. This voltage scaling technique allows to reduce the active
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* power consumption while decreasing the maximum frequency of the device. When
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* operating at PL2, the voltage regulator supplies the highest voltage, allowing
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* the device to run at higher clock speeds.
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*
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* Performance level transition is possible only when the device is in active
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* mode. After a reset, the device starts at the lowest performance level
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* (lowest power consumption and lowest max. frequency). The application can then
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* switch to another performance level at any time without any stop in the code
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* execution. As shown in \ref asfdoc_sam0_system_performance_level_transition_figure.
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*
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* \note When scaling down the performance level, the bus frequency should first be
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* scaled down in order to not exceed the maximum frequency allowed for the
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* low performance level.
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* When scaling up the performance level (e.g. from PL0 to PL2), check the performance
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* level status before increasing the bus frequency. It can be increased only
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* when the performance level transition is completed.
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*
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* \anchor asfdoc_sam0_system_performance_level_transition_figure
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* \image html performance_level_transition.svg "Performance Level Transition"
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*
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* \subsection asfdoc_sam0_system_module_overview_power_domain Power Domain Gating
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* Power domain gating allows power saving by reducing the voltage in logic
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* areas in the device to a low-power supply. The feature is available in
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* Standby sleep mode and will reduce the voltage in domains where all peripherals
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* are idle. Internal logic will maintain its content, meaning the corresponding
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* peripherals will not need to be reconfigured when normal operating voltage
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* is returned. Most power domains can be in the following three states:
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*
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* - Active state: The power domain is powered on.
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* - Retention state: The main voltage supply for the power domain is switched off,
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* while maintaining a secondary low-power supply for the sequential cells. The
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* logic context is restored when waking up.
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* - Off state: The power domain is entirely powered off. The logic context is lost.
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*
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* The SAM L21 device contains three power domains which can be controlled using
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* power domain gating, namely PD0, PD1, and PD2. These power domains can be
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* configured to the following cases:
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* - Default with no sleepwalking peripherals: A power domain is automatically set
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* to retention state in standby sleep mode if no activity require it. The application
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* can force all power domains to remain in active state during standby sleep mode
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* in order to accelerate wakeup time.
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* - Default with sleepwalking peripherals: If one or more peripherals are enabled
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* to perform sleepwalking tasks in standby sleep mode, the corresponding power
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* domain (PDn) remains in active state as well as all inferior power domains (<PDn).
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* - Sleepwalking with dynamic power domain gating: During standby sleep mode, a
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* power domain (PDn) in active can wake up a superior power domain (>PDn) in order
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* to perform a sleepwalking task. The superior power domain is then automatically
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* set to active state. At the end of the sleepwalking task, the device can either
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* be woken up or the superior power domain can return to retention state.
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*
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* Power domains can be linked to each other, it allows a power domain (PDn) to be kept
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* in active state if the inferior power domain (PDn-1) is in active state too.
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*
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* \ref asfdoc_sam0_system_power_domain_overview_table illustrates the
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* four cases to consider in standby mode.
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*
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* \anchor asfdoc_sam0_system_power_domain_overview_table
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* <table>
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* <caption>Sleep Mode versus Power Domain State Overview</caption>
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* <tr>
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* <th>Sleep mode</th>
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* <th>PD0</th>
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* <th>PD1</th>
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* <th>PD2</th>
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* <th>PDTOP</th>
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* <th>PDBACKUP</th>
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* </tr>
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* <tr>
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* <td>Idle</td>
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* <td>active</td>
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* <td>active</td>
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* <td>active</td>
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* <td>active</td>
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* <td>active</td>
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* </tr>
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* <tr>
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* <td>Standby - Case 1</td>
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* <td>active</td>
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* <td>active</td>
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* <td>active</td>
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* <td>active</td>
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* <td>active</td>
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* </tr>
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* <tr>
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* <td>Standby - Case 2</td>
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* <td>active</td>
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* <td>active</td>
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* <td>retention</td>
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* <td>active</td>
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* <td>active</td>
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* </tr>
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* <tr>
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* <td>Standby - Case 3</td>
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* <td>active</td>
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* <td>retention</td>
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* <td>retention</td>
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* <td>active</td>
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* <td>active</td>
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* </tr>
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* <tr>
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* <td>Standby - Case 4</td>
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* <td>retention</td>
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* <td>retention</td>
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* <td>retention</td>
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* <td>active</td>
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* <td>active</td>
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* </tr>
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* <tr>
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* <td>Backup</td>
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* <td>off</td>
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* <td>off</td>
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* <td>off</td>
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* <td>off</td>
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* <td>active</td>
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* </tr>
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* <tr>
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* <td>Off</td>
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* <td>off</td>
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* <td>off</td>
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* <td>off</td>
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* <td>off</td>
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* <td>off</td>
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* </tr>
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* </table>
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*
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* \subsection asfdoc_sam0_system_module_overview_ram_state RAMs Low Power Mode
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* By default, in standby sleep mode, RAM is in low power mode (back biased)
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* if its power domain is in retention state.
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* \ref asfdoc_sam0_system_power_ram_state_table lists RAMs low power mode.
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*
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* \anchor asfdoc_sam0_system_power_ram_state_table
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* <table>
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* <caption>RAM Back-biasing Mode</caption>
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* <tr>
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* <th>RAM mode</th>
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* <th>Description</th>
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* </tr>
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* <tr>
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* <td>Retention Back-biasing mode</td>
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* <td>RAM is back-biased if its power domain is in retention mode</td>
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* </tr>
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* <tr>
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* <td>Standby Back-biasing mode</td>
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* <td>RAM is back-biased if the device is in standby mode</td>
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* </tr>
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* <tr>
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* <td>Standby OFF mode</td>
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* <td>RAM is OFF if the device is in standby mode</td>
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* </tr>
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* <tr>
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* <td>Always OFF mode</td>
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* <td>RAM is OFF if the device is in RET mode</td>
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* </tr>
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* </table>
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*
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* \endif
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*
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* \subsection asfdoc_sam0_system_module_overview_sleep_mode Sleep Modes
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* The SAM devices have several sleep modes. The sleep mode controls
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* which clock systems on the device will remain enabled or disabled when the
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* device enters a low power sleep mode.
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* \ref asfdoc_sam0_system_module_sleep_mode_table "The table below" lists the
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* clock settings of the different sleep modes.
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*
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* \anchor asfdoc_sam0_system_module_sleep_mode_table
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* <table>
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* <caption>SAM Device Sleep Modes</caption>
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* \if DEVICE_SAML21_SYSTEM_SUPPORT
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* <tr>
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* <th>Sleep mode</th>
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* <th>System clock</th>
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* <th>CPU clock</th>
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* <th>AHB/AHB clock</th>
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* <th>GCLK clocks</th>
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* <th>Oscillators (ONDEMAND = 0)</th>
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* <th>Oscillators (ONDEMAND = 1)</th>
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* <th>Regulator mode</th>
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* <th>RAM mode</th>
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* </tr>
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* <tr>
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* <td>Idle</td>
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* <td>Run</td>
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* <td>Stop</td>
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* <td>Run if requested</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run if requested</td>
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* <td>Normal</td>
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* <td>Normal</td>
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* </tr>
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* <tr>
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* <td>Standby</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Run if requested</td>
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* <td>Run if requested</td>
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* <td>Run if requested or RUNSTDBY = 1</td>
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* <td>Run if requested</td>
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* <td>Low pwer</td>
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* <td>Low pwer</td>
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* </tr>
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* <tr>
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* <td>Backup</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Backup</td>
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* <td>Off</td>
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* </tr>
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* <tr>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* <td>Off</td>
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* </tr>
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* \else
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* <tr>
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* <th>Sleep mode</th>
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* <th>CPU clock</th>
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* <th>AHB clock</th>
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* <th>APB clocks</th>
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* <th>Clock sources</th>
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* <th>System clock</th>
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* <th>32KHz</th>
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* <th>Reg mode</th>
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* <th>RAM mode</th>
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* </tr>
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* <tr>
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* <td>Idle 0</td>
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* <td>Stop</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Normal</td>
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* <td>Normal</td>
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* </tr>
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* <tr>
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* <td>Idle 1</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Normal</td>
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* <td>Normal</td>
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* </tr>
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* <tr>
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* <td>Idle 2</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Stop</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Run</td>
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* <td>Normal</td>
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* <td>Normal</td>
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* </tr>
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* <tr>
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* <td>Standby</td>
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* <td>Stop</td>
|
|
* <td>Stop</td>
|
|
* <td>Stop</td>
|
|
* <td>Stop</td>
|
|
* <td>Stop</td>
|
|
* <td>Stop</td>
|
|
* <td>Low Power</td>
|
|
* <td>Source/Drain biasing</td>
|
|
* </tr>
|
|
* \endif
|
|
* </table>
|
|
*
|
|
* Before entering device sleep, one of the available sleep modes must be set.
|
|
* The device will automatically wake up in response to an interrupt being
|
|
* generated or upon any other sleep mode exit condition.
|
|
*
|
|
* Some peripheral clocks will remain enabled during sleep, depending on their
|
|
* configuration. If desired, the modules can remain clocked during sleep to allow
|
|
* them continue to operate while other parts of the system are powered down
|
|
* to save power.
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_special_considerations Special Considerations
|
|
*
|
|
* Most of the functions in this driver have device specific restrictions and
|
|
* caveats; refer to your device datasheet.
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_extra_info Extra Information
|
|
*
|
|
* For extra information, see \ref asfdoc_sam0_system_extra. This includes:
|
|
* - \ref asfdoc_sam0_system_extra_acronyms
|
|
* - \ref asfdoc_sam0_system_extra_dependencies
|
|
* - \ref asfdoc_sam0_system_extra_errata
|
|
* - \ref asfdoc_sam0_system_extra_history
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_examples Examples
|
|
*
|
|
* For SYSTEM module related examples, refer to the sub-modules listed in
|
|
* the \ref asfdoc_sam0_system_module_overview "Module Overview".
|
|
*
|
|
* \if DEVICE_SAML21_SYSTEM_SUPPORT
|
|
* For a list of examples related to this driver, see
|
|
* \ref asfdoc_sam0_drivers_power_exqsg.
|
|
* \endif
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_api_overview API Overview
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \name System Debugger
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \brief Check if debugger is present.
|
|
*
|
|
* Check if debugger is connected to the onboard debug system (DAP).
|
|
*
|
|
* \return A bool identifying if a debugger is present.
|
|
*
|
|
* \retval true Debugger is connected to the system
|
|
* \retval false Debugger is not connected to the system
|
|
*
|
|
*/
|
|
static inline bool system_is_debugger_present(void)
|
|
{
|
|
return DSU->STATUSB.reg & DSU_STATUSB_DBGPRES;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* \name System Identification
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \brief Retrieve the device identification signature.
|
|
*
|
|
* Retrieves the signature of the current device.
|
|
*
|
|
* \return Device ID signature as a 32-bit integer.
|
|
*/
|
|
static inline uint32_t system_get_device_id(void)
|
|
{
|
|
return DSU->DID.reg;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* \name System Initialization
|
|
* @{
|
|
*/
|
|
|
|
void system_init(uint16_t dfll_fine_calibration);
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* \if DEVICE_SAML21_SYSTEM_SUPPORT
|
|
* \page asfdoc_sam0_drivers_power_exqsg Examples for SYSTEM Driver
|
|
*
|
|
* This is a list of the available Quick Start Guides (QSGs) and example
|
|
* applications for \ref asfdoc_sam0_system_group. QSGs are simple examples with step-by-step instructions to
|
|
* configure and use this driver in a selection of
|
|
* use cases. Note that a QSG can be compiled as a standalone application or be
|
|
* added to the user application.
|
|
*
|
|
* - \subpage asfdoc_sam0_power_basic_use_case
|
|
* \endif
|
|
*
|
|
* \page asfdoc_sam0_system_extra Extra Information for SYSTEM Driver
|
|
*
|
|
* \section asfdoc_sam0_system_extra_acronyms Acronyms
|
|
* Below is a table listing the acronyms used in this module, along with their
|
|
* intended meanings.
|
|
*
|
|
* <table>
|
|
* <tr>
|
|
* <th>Acronym</th>
|
|
* <th>Definition</th>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>PM</td>
|
|
* <td>Power Manager</td>
|
|
* </tr>
|
|
* \if DEVICE_SAML21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>SUPC</td>
|
|
* <td>Supply Controller</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>RSTC</td>
|
|
* <td>Reset Controller</td>
|
|
* </tr>
|
|
* \endif
|
|
* \if DEVICE_SAMC21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>SUPC</td>
|
|
* <td>Supply Controller</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>RSTC</td>
|
|
* <td>Reset Controller</td>
|
|
* </tr>
|
|
* \endif
|
|
* \if DEVICE_SAMD21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>SYSCTRL</td>
|
|
* <td>System control interface</td>
|
|
* </tr>
|
|
* \endif
|
|
* </table>
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_extra_dependencies Dependencies
|
|
* This driver has the following dependencies:
|
|
*
|
|
* - None
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_extra_errata Errata
|
|
* There are no errata related to this driver.
|
|
*
|
|
*
|
|
* \section asfdoc_sam0_system_extra_history Module History
|
|
* An overview of the module history is presented in the table below, with
|
|
* details on the enhancements and fixes made to the module since its first
|
|
* release. The current version of this corresponds to the newest version in
|
|
* the table.
|
|
*
|
|
* <table>
|
|
* <tr>
|
|
* <th>Changelog</th>
|
|
* </tr>
|
|
* \if DEVICE_SAML21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>Initial Release</td>
|
|
* </tr>
|
|
* \endif
|
|
* \if DEVICE_SAMC21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>Initial Release</td>
|
|
* </tr>
|
|
* \endif
|
|
* \if DEVICE_SAMD21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>Added new \c system_reset() to reset the complete MCU with some exceptions</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>Added new \c system_get_device_id() function to retrieved the device
|
|
* ID</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>Initial Release</td>
|
|
* </tr>
|
|
* \endif
|
|
* </table>
|
|
*
|
|
* \page asfdoc_sam0_system_document_revision_history Document Revision History
|
|
*
|
|
* <table>
|
|
* <tr>
|
|
* <th>Doc. Rev.</th>
|
|
* <th>Date</th>
|
|
* <th>Comments</th>
|
|
* </tr>
|
|
* \if DEVICE_SAML21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>42449A</td>
|
|
* <td>07/2015</td>
|
|
* <td>Initial document release</td>
|
|
* </tr>
|
|
* \endif
|
|
* \if DEVICE_SAMC21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>42484A</td>
|
|
* <td>12/2015</td>
|
|
* <td>Initial document release.</td>
|
|
* </tr>
|
|
* \endif
|
|
* \if DEVICE_SAMD21_SYSTEM_SUPPORT
|
|
* <tr>
|
|
* <td>42120E</td>
|
|
* <td>12/2015</td>
|
|
* <td>Added support for SAM DA1 and SAM D09</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>42120D</td>
|
|
* <td>12/2014</td>
|
|
* <td>Added support for SAM R21 and SAM D10/D11</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>42120C</td>
|
|
* <td>01/2014</td>
|
|
* <td>Added support for SAM D21</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>42120B</td>
|
|
* <td>06/2013</td>
|
|
* <td>Corrected documentation typos</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>42120A</td>
|
|
* <td>06/2013</td>
|
|
* <td>Initial document release</td>
|
|
* </tr>
|
|
* \endif
|
|
* </table>
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* SYSTEM_H_INCLUDED */
|