79 lines
3.1 KiB
C
79 lines
3.1 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 MSP430/hal_lld.c
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* @brief MSP430 HAL subsystem low level driver source.
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*
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* @addtogroup HAL
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#include "F5XX_F6XX_CORE_LIB/HAL_PMM.h"
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#include "F5XX_F6XX_CORE_LIB/HAL_UCS.h"
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#define HZ_TO_KHZ(f_Hz) (f_Hz/1000)
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#define SELECT_PMMCOREV(f_Hz) (f_Hz <= 8000000ul ? PMMCOREV_0 : \
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(f_Hz <= 12000000ul ? PMMCOREV_1 : \
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(f_Hz <= 20000000ul ? PMMCOREV_2 : PMMCOREV_3)))
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Low level HAL driver initialization.
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*
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* @notapi
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*/
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void hal_lld_init(void) {
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#if MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_XT2CLK
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#error "XT2CLK is not implemented"
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#elif MSP430_USE_CLOCK == MSP430_CLOCK_SOURCE_DCOCLK
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SetVCore(SELECT_PMMCOREV(DCOCLK)); /* Set core voltage */
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SELECT_FLLREF(SELREF__REFOCLK); /* Set DCO FLL reference = REFO */
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SELECT_ACLK(SELA__REFOCLK); /* Set ACLK = REFO */
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Init_FLL_Settle(HZ_TO_KHZ(DCOCLK),DCOCLK/LFXT1CLK);
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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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/** @} */
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