171 lines
7.7 KiB
C
171 lines
7.7 KiB
C
/**
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* \file
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*
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* \brief SAM D20 Clock configuration
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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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#include <clock.h>
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#ifndef CONF_CLOCKS_H_INCLUDED
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# define CONF_CLOCKS_H_INCLUDED
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/* System clock bus configuration */
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# define CONF_CLOCK_FLASH_WAIT_STATES 0
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# define CONF_CLOCK_CPU_DIVIDER SYSTEM_MAIN_CLOCK_DIV_1
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# define CONF_CLOCK_APBA_DIVIDER SYSTEM_MAIN_CLOCK_DIV_1
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# define CONF_CLOCK_APBB_DIVIDER SYSTEM_MAIN_CLOCK_DIV_1
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# define CONF_CLOCK_APBC_DIVIDER SYSTEM_MAIN_CLOCK_DIV_1
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/* SYSTEM_CLOCK_SOURCE_OSC8M configuration - Internal 8MHz oscillator */
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# define CONF_CLOCK_OSC8M_PRESCALER SYSTEM_OSC8M_DIV_1
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# define CONF_CLOCK_OSC8M_ON_DEMAND true
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# define CONF_CLOCK_OSC8M_RUN_IN_STANDBY false
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/* SYSTEM_CLOCK_SOURCE_XOSC configuration - External clock/oscillator */
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# define CONF_CLOCK_XOSC_ENABLE false
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# define CONF_CLOCK_XOSC_EXTERNAL_CRYSTAL SYSTEM_CLOCK_EXTERNAL_CRYSTAL
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# define CONF_CLOCK_XOSC_EXTERNAL_FREQUENCY 12000000UL
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# define CONF_CLOCK_XOSC_STARTUP_TIME SYSTEM_XOSC_STARTUP_32768
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# define CONF_CLOCK_XOSC_AUTO_GAIN_CONTROL true
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# define CONF_CLOCK_XOSC_ON_DEMAND true
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# define CONF_CLOCK_XOSC_RUN_IN_STANDBY false
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/* SYSTEM_CLOCK_SOURCE_XOSC32K configuration - External 32KHz crystal/clock oscillator */
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# define CONF_CLOCK_XOSC32K_ENABLE false
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# define CONF_CLOCK_XOSC32K_EXTERNAL_CRYSTAL SYSTEM_CLOCK_EXTERNAL_CRYSTAL
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# define CONF_CLOCK_XOSC32K_STARTUP_TIME SYSTEM_XOSC32K_STARTUP_65536
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# define CONF_CLOCK_XOSC32K_AUTO_AMPLITUDE_CONTROL false
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# define CONF_CLOCK_XOSC32K_ENABLE_1KHZ_OUPUT false
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# define CONF_CLOCK_XOSC32K_ENABLE_32KHZ_OUTPUT true
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# define CONF_CLOCK_XOSC32K_ON_DEMAND true
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# define CONF_CLOCK_XOSC32K_RUN_IN_STANDBY false
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/* SYSTEM_CLOCK_SOURCE_OSC32K configuration - Internal 32KHz oscillator */
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# define CONF_CLOCK_OSC32K_ENABLE false
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# define CONF_CLOCK_OSC32K_STARTUP_TIME SYSTEM_OSC32K_STARTUP_130
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# define CONF_CLOCK_OSC32K_ENABLE_1KHZ_OUTPUT true
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# define CONF_CLOCK_OSC32K_ENABLE_32KHZ_OUTPUT true
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# define CONF_CLOCK_OSC32K_ON_DEMAND true
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# define CONF_CLOCK_OSC32K_RUN_IN_STANDBY false
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/* SYSTEM_CLOCK_SOURCE_DFLL configuration - Digital Frequency Locked Loop */
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# define CONF_CLOCK_DFLL_ENABLE false
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# define CONF_CLOCK_DFLL_LOOP_MODE SYSTEM_CLOCK_DFLL_LOOP_MODE_OPEN
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# define CONF_CLOCK_DFLL_ON_DEMAND false
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/* DFLL open loop mode configuration */
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# define CONF_CLOCK_DFLL_FINE_VALUE (512)
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/* DFLL closed loop mode configuration */
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# define CONF_CLOCK_DFLL_SOURCE_GCLK_GENERATOR GCLK_GENERATOR_1
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# define CONF_CLOCK_DFLL_MULTIPLY_FACTOR 1465 /* (48000000 / 32768) */
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# define CONF_CLOCK_DFLL_QUICK_LOCK true
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# define CONF_CLOCK_DFLL_TRACK_AFTER_FINE_LOCK true
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# define CONF_CLOCK_DFLL_KEEP_LOCK_ON_WAKEUP true
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# define CONF_CLOCK_DFLL_ENABLE_CHILL_CYCLE true
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# define CONF_CLOCK_DFLL_MAX_COARSE_STEP_SIZE (0x1f / 4)
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# define CONF_CLOCK_DFLL_MAX_FINE_STEP_SIZE (0xff / 4)
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/* Set this to true to configure the GCLK when running clocks_init. If set to
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* false, none of the GCLK generators will be configured in clocks_init(). */
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# define CONF_CLOCK_CONFIGURE_GCLK true
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/* Configure GCLK generator 0 (Main Clock) */
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# define CONF_CLOCK_GCLK_0_ENABLE true
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# define CONF_CLOCK_GCLK_0_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_0_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC8M
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# define CONF_CLOCK_GCLK_0_PRESCALER 1
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# define CONF_CLOCK_GCLK_0_OUTPUT_ENABLE false
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/* Configure GCLK generator 1 */
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# define CONF_CLOCK_GCLK_1_ENABLE false
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# define CONF_CLOCK_GCLK_1_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_1_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_XOSC32K
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# define CONF_CLOCK_GCLK_1_PRESCALER 1
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# define CONF_CLOCK_GCLK_1_OUTPUT_ENABLE false
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/* Configure GCLK generator 2 (RTC) */
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# define CONF_CLOCK_GCLK_2_ENABLE false
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# define CONF_CLOCK_GCLK_2_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_2_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC32K
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# define CONF_CLOCK_GCLK_2_PRESCALER 32
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# define CONF_CLOCK_GCLK_2_OUTPUT_ENABLE false
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/* Configure GCLK generator 3 */
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# define CONF_CLOCK_GCLK_3_ENABLE false
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# define CONF_CLOCK_GCLK_3_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_3_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC8M
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# define CONF_CLOCK_GCLK_3_PRESCALER 1
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# define CONF_CLOCK_GCLK_3_OUTPUT_ENABLE false
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/* Configure GCLK generator 4 */
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# define CONF_CLOCK_GCLK_4_ENABLE false
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# define CONF_CLOCK_GCLK_4_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_4_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC8M
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# define CONF_CLOCK_GCLK_4_PRESCALER 1
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# define CONF_CLOCK_GCLK_4_OUTPUT_ENABLE false
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/* Configure GCLK generator 5 */
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# define CONF_CLOCK_GCLK_5_ENABLE false
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# define CONF_CLOCK_GCLK_5_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_5_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC8M
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# define CONF_CLOCK_GCLK_5_PRESCALER 1
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# define CONF_CLOCK_GCLK_5_OUTPUT_ENABLE false
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/* Configure GCLK generator 6 */
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# define CONF_CLOCK_GCLK_6_ENABLE false
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# define CONF_CLOCK_GCLK_6_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_6_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC8M
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# define CONF_CLOCK_GCLK_6_PRESCALER 1
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# define CONF_CLOCK_GCLK_6_OUTPUT_ENABLE false
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/* Configure GCLK generator 7 */
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# define CONF_CLOCK_GCLK_7_ENABLE false
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# define CONF_CLOCK_GCLK_7_RUN_IN_STANDBY false
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# define CONF_CLOCK_GCLK_7_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC8M
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# define CONF_CLOCK_GCLK_7_PRESCALER 1
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# define CONF_CLOCK_GCLK_7_OUTPUT_ENABLE false
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#endif /* CONF_CLOCKS_H_INCLUDED */
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