248 lines
7.9 KiB
C
248 lines
7.9 KiB
C
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/*
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ChibiOS - Copyright (C) 2016 Andrew Wygle aka awygle
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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 MSP430X/hal_lld.h
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* @brief MSP430X 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 "hal_dma_lld.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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/* someday*/
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#define HAL_IMPLEMENTS_COUNTERS FALSE
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/**
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* @name Platform identification macros
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* @{
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*/
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#define PLATFORM_NAME "MSP430X"
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/** @} */
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#define MSP430X_LFXTCLK 0
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#define MSP430X_VLOCLK 1
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#define MSP430X_LFMODCLK 2
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#define MSP430X_DCOCLK 3
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#define MSP430X_MODCLK 4
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#define MSP430X_HFXTCLK 5
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#if !defined(MSP430X_LFXTCLK_FREQ)
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#define MSP430X_LFXTCLK_FREQ 32768
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#warning "LFXTCLK freqency not defined - assuming 32768 Hz"
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#endif
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#define MSP430X_VLOCLK_FREQ 10000
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#define MSP430X_MODCLK_FREQ 5000000
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#define MSP430X_LFMODCLK_FREQ (MSP430X_MODCLK_FREQ/128)
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#if !defined(MSP430X_DCOCLK_FREQ)
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#define MSP430X_DCOCLK_FREQ 8000000
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#warning "DCOCLK frequency not defined - assuming 8 MHz"
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#endif
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#if !defined(MSP430X_HFXTCLK_FREQ)
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#define MSP430X_HFXTCLK_FREQ 0
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#warning "HFXTCLK frequency not defined - assuming disabled"
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#endif
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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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* @name MSP430X configuration options
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* @{
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*/
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/* Clock dividers */
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#if !defined(MSP430X_ACLK_DIV)
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#define MSP430X_ACLK_DIV 1
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#endif
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#if !defined(MSP430X_MCLK_DIV)
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#define MSP430X_MCLK_DIV 8
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#endif
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#if !defined(MSP430X_SMCLK_DIV)
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#define MSP430X_SMCLK_DIV 8
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#endif
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/* Clock sources */
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#if !defined(MSP430X_ACLK_SRC)
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#define MSP430X_ACLK_SRC MSP430X_LFXTCLK
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#endif
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#if !defined(MSP430X_MCLK_SRC)
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#define MSP430X_MCLK_SRC MSP430X_DCOCLK
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#endif
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#if !defined(MSP430X_SMCLK_SRC)
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#define MSP430X_SMCLK_SRC MSP430X_DCOCLK
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#endif
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/* HFXT and LFXT settings */
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#if !defined(MSP430X_LFXTCLK_BYPASS)
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#define MSP430X_LFXTCLK_BYPASS 0
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#endif
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#if !defined(MSP430X_LFXTCLK_DRIVE)
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#define MSP430X_LFXTCLK_DRIVE 3
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#endif
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#if !defined(MSP430X_HFXTCLK_BYPASS)
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#define MSP430X_HFXTCLK_BYPASS 0
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#endif
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#if !defined(MSP430X_HFXTCLK_DRIVE)
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#define MSP430X_HFXTCLK_DRIVE 3
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#endif
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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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* Configuration-related checks.
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*/
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#if (MSP430X_ACLK_SRC == MSP430X_LFXTCLK) || (MSP430X_MCLK_SRC == MSP430X_LFXTCLK) || (MSP430X_SMCLK_SRC == MSP430X_LFXTCLK)
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#define MSP430X_USE_LFXTCLK
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#endif
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#if (MSP430X_MCLK_SRC == MSP430X_HFXTCLK) || (MSP430X_SMCLK_SRC == MSP430X_HFXTCLK)
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#define MSP430X_USE_HFXTCLK
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#endif
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#if defined(MSP430X_USE_HFXTCLK) && MSP430X_HFXTCLK_FREQ == 0
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#error "HFXT requested as clock source but disabled"
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#endif
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/* Clock speeds */
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#if (MSP430X_ACLK_SRC == MSP430X_LFXTCLK)
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#define MSP430X_ACLK_FREQ (MSP430X_LFXTCLK_FREQ / MSP430X_ACLK_DIV)
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#elif (MSP430X_ACLK_SRC == MSP430X_VLOCLK)
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#define MSP430X_ACLK_FREQ (MSP430X_VLOCLK_FREQ / MSP430X_ACLK_DIV)
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#elif (MSP430X_ACLK_SRC == MSP430X_LFMODCLK)
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#define MSP430X_ACLK_FREQ (MSP430X_LFMODCLK_FREQ / MSP430X_ACLK_DIV)
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#else
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#error "ACLK source invalid!"
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#endif
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#if (MSP430X_MCLK_SRC == MSP430X_LFXTCLK)
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#define MSP430X_MCLK_FREQ (MSP430X_LFXTCLK_FREQ / MSP430X_MCLK_DIV)
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#elif (MSP430X_MCLK_SRC == MSP430X_VLOCLK)
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#define MSP430X_MCLK_FREQ (MSP430X_VLOCLK_FREQ / MSP430X_MCLK_DIV)
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#elif (MSP430X_MCLK_SRC == MSP430X_LFMODCLK)
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#define MSP430X_MCLK_FREQ (MSP430X_LFMODCLK_FREQ / MSP430X_MCLK_DIV)
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#elif (MSP430X_MCLK_SRC == MSP430X_DCOCLK)
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#define MSP430X_MCLK_FREQ (MSP430X_DCOCLK_FREQ / MSP430X_MCLK_DIV)
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#elif (MSP430X_MCLK_SRC == MSP430X_MODCLK)
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#define MSP430X_MCLK_FREQ (MSP430X_MODCLK_FREQ / MSP430X_MCLK_DIV)
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#elif (MSP430X_MCLK_SRC == MSP430X_HFXTCLK)
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#define MSP430X_MCLK_FREQ (MSP430X_HFXTCLK_FREQ / MSP430X_MCLK_DIV)
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#else
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#error "MCLK source invalid!"
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#endif
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#if (MSP430X_SMCLK_SRC == MSP430X_LFXTCLK)
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#define MSP430X_SMCLK_FREQ (MSP430X_LFXTCLK_FREQ / MSP430X_SMCLK_DIV)
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#elif (MSP430X_SMCLK_SRC == MSP430X_VLOCLK)
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#define MSP430X_SMCLK_FREQ (MSP430X_VLOCLK_FREQ / MSP430X_SMCLK_DIV)
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#elif (MSP430X_SMCLK_SRC == MSP430X_LFMODCLK)
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#define MSP430X_SMCLK_FREQ (MSP430X_LFMODCLK_FREQ / MSP430X_SMCLK_DIV)
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#elif (MSP430X_SMCLK_SRC == MSP430X_DCOCLK)
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#define MSP430X_SMCLK_FREQ (MSP430X_DCOCLK_FREQ / MSP430X_SMCLK_DIV)
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#elif (MSP430X_SMCLK_SRC == MSP430X_MODCLK)
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#define MSP430X_SMCLK_FREQ (MSP430X_MODCLK_FREQ / MSP430X_SMCLK_DIV)
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#elif (MSP430X_SMCLK_SRC == MSP430X_HFXTCLK)
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#define MSP430X_SMCLK_FREQ (MSP430X_HFXTCLK_FREQ / MSP430X_SMCLK_DIV)
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#else
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#error "SMCLK source invalid!"
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#endif
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#if !defined(MSP430X_MCUCONF)
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#error "Using an incorrect mcuconf.h file, MSP430X_MCUCONF not defined"
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#endif
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/* HFXT-specific settings */
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#if MSP430X_HFXTCLK_FREQ <= 4000000
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#define MSP430X_HFFREQ HFFREQ_0
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#elif MSP430X_HFXTCLK_FREQ <= 8000000
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#define MSP430X_HFFREQ HFFREQ_1
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#elif MSP430X_HFXTCLK_FREQ <= 16000000
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#define MSP430X_HFFREQ HFFREQ_2
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#elif MSP430X_HFXTCLK_FREQ <= 24000000
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#define MSP430X_HFFREQ HFFREQ_3
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#else
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#error "HFXT frequency too high - must be <= 24000000"
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#endif
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/* DCO-specific settings */
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#if MSP430X_DCOCLK_FREQ == 1000000
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#define MSP430X_DCOSEL DCOFSEL_0
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#elif MSP430X_DCOCLK_FREQ == 2670000
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#define MSP430X_DCOSEL DCOFSEL_1
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#elif MSP430X_DCOCLK_FREQ == 3330000
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#define MSP430X_DCOSEL DCOFSEL_2
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#elif MSP430X_DCOCLK_FREQ == 4000000
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#define MSP430X_DCOSEL DCOFSEL_3
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#elif MSP430X_DCOCLK_FREQ == 5330000
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#define MSP430X_DCOSEL DCOFSEL_4
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#elif MSP430X_DCOCLK_FREQ == 6670000
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#define MSP430X_DCOSEL DCOFSEL_5
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#elif MSP430X_DCOCLK_FREQ == 8000000
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#define MSP430X_DCOSEL DCOFSEL_6
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#elif MSP430X_DCOCLK_FREQ == 16000000
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#define MSP430X_DCOSEL (DCORSEL | DCOFSEL_4)
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#elif MSP430X_DCOCLK_FREQ == 21000000
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#define MSP430X_DCOSEL (DCORSEL | DCOFSEL_5)
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#elif MSP430X_DCOCLK_FREQ == 24000000
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#define MSP430X_DCOSEL (DCORSEL | DCOFSEL_6)
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#else
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#error "DCO frequency invalid"
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#endif
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#if MSP430X_LFXTCLK_FREQ > 50000
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#error "LFXT frequency too high - must be <= 5000"
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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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#define DIVIDER(x) DIV_HELPER(x)
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#define DIV_HELPER(x) DIVM__ ## x
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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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