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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
---
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes ChibiOS/RT, without being obliged to provide
the source code for any proprietary components. See the file exception.txt
for full details of how and when the exception can be applied.
*/
/**
* @file MSP430/hal_lld.h
* @brief MSP430 HAL subsystem low level driver header.
*
* @addtogroup HAL
* @{
*/
#ifndef _HAL_LLD_H_
#define _HAL_LLD_H_
#include "msp430.h"
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @brief Defines the support for realtime counters in the HAL.
*/
#define HAL_IMPLEMENTS_COUNTERS FALSE
/**
* @brief Platform name.
*/
#define PLATFORM_NAME "MSP430"
#define MSP430_CLOCK_SOURCE_XT2CLK 0 /**< @brief XT2CLK clock selector. */
#define MSP430_CLOCK_SOURCE_DCOCLK 1 /**< @brief DCOCLK clock selector. */
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief Clock source.
* @details The clock source can be selected from:
* - @p MSP430_CLOCK_SOURCE_XT2CLK.
* - @p MSP430_CLOCK_SOURCE_DCOCLK.
* .
*/
#if !defined(MSP430_USE_CLOCK) || defined(__DOXYGEN__)
#define MSP430_USE_CLOCK MSP430_CLOCK_SOURCE_XT2CLK
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*
* Calculating the derived clock constants.
*/
#define ACLK LFXT1CLK
#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_XT2CLK
#define MCLK XT2CLK
#define SMCLK (XT2CLK / 8)
#elif MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_DCOCLK
#define MCLK DCOCLK
#define SMCLK DCOCLK
#else
#error "unknown clock source specified"
#endif
/*
* Calculating the initialization values.
*/
#define VAL_DCOCTL (DCO0 | DCO1)
#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_XT2CLK
#define VAL_BCSCTL1 (RSEL2)
#define VAL_BCSCTL2 (SELM_2 | DIVM_0 | DIVS_3 | SELS)
#endif
#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_DCOCLK
#define VAL_BCSCTL1 (XT2OFF | RSEL2)
#define VAL_BCSCTL2 (SELM_0 | DIVM_0 | DIVS_0)
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void hal_lld_init(void);
#ifdef __cplusplus
}
#endif
#endif /* _HAL_LLD_H_ */
/** @} */
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