113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file templates/hal_lld.h
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* @brief HAL subsystem low level driver header template.
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*
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* @addtogroup HAL
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* @{
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*/
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#ifndef _HAL_LLD_H_
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#define _HAL_LLD_H_
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#include "sam4l.h"
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/**
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* @brief Defines the support for realtime counters in the HAL.
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*/
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#define HAL_IMPLEMENTS_COUNTERS TRUE
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/**
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* @brief Platform name.
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*/
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#define PLATFORM_NAME "SAM4L Series"
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Type representing a system clock frequency.
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*/
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typedef uint32_t halclock_t;
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/**
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* @brief Type of the realtime free counter value.
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*/
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typedef uint32_t halrtcnt_t;
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/**
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* @brief Returns the current value of the system free running counter.
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* @note This service is implemented by returning the content of the
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* DWT_CYCCNT register.
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*
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* @return The value of the system free running counter of
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* type halrtcnt_t.
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*
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* @notapi
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*/
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#define hal_lld_get_counter_value() DWT_CYCCNT
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/**
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* @brief Realtime counter frequency.
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* @note The DWT_CYCCNT register is incremented directly by the system
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* clock so this function returns STM32_HCLK.
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*
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* @return The realtime counter frequency of type halclock_t.
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*
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* @notapi
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*/
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#define hal_lld_get_counter_frequency() STM32_HCLK
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void sam4l_clock_init(void);
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void hal_lld_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _HAL_LLD_H_ */
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/** @} */
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