116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file MSP430/hal_lld.h
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* @brief MSP430 HAL subsystem low level driver header.
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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 "msp430.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 FALSE
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/**
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* @brief Platform name.
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*/
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#define PLATFORM_NAME "MSP430"
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#define MSP430_CLOCK_SOURCE_XT2CLK 0 /**< @brief XT2CLK clock selector. */
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#define MSP430_CLOCK_SOURCE_DCOCLK 1 /**< @brief DCOCLK clock selector. */
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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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* @brief Clock source.
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* @details The clock source can be selected from:
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* - @p MSP430_CLOCK_SOURCE_XT2CLK.
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* - @p MSP430_CLOCK_SOURCE_DCOCLK.
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* .
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*/
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#if !defined(MSP430_USE_CLOCK) || defined(__DOXYGEN__)
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#define MSP430_USE_CLOCK MSP430_CLOCK_SOURCE_XT2CLK
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#endif
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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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* Calculating the derived clock constants.
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*/
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#define ACLK LFXT1CLK
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#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_XT2CLK
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#define MCLK XT2CLK
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#define SMCLK (XT2CLK / 8)
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#elif MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_DCOCLK
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#define MCLK DCOCLK
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#define SMCLK DCOCLK
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#else
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#error "unknown clock source specified"
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#endif
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/*
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* Calculating the initialization values.
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*/
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#define VAL_DCOCTL (DCO0 | DCO1)
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#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_XT2CLK
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#define VAL_BCSCTL1 (RSEL2)
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#define VAL_BCSCTL2 (SELM_2 | DIVM_0 | DIVS_3 | SELS)
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#endif
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#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_DCOCLK
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#define VAL_BCSCTL1 (XT2OFF | RSEL2)
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#define VAL_BCSCTL2 (SELM_0 | DIVM_0 | DIVS_0)
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#endif
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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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/* Driver macros. */
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/*===========================================================================*/
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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 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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