136 lines
4.6 KiB
C
136 lines
4.6 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fsl_pdb.h"
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*!
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* @brief Get instance number for PDB module.
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*
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* @param base PDB peripheral base address
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*/
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static uint32_t PDB_GetInstance(PDB_Type *base);
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/*******************************************************************************
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* Variables
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******************************************************************************/
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/*! @brief Pointers to PDB bases for each instance. */
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static PDB_Type *const s_pdbBases[] = PDB_BASE_PTRS;
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/*! @brief Pointers to PDB clocks for each instance. */
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const clock_ip_name_t s_pdbClocks[] = PDB_CLOCKS;
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/*******************************************************************************
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* Codes
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******************************************************************************/
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static uint32_t PDB_GetInstance(PDB_Type *base)
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{
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uint32_t instance;
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/* Find the instance index from base address mappings. */
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for (instance = 0; instance < FSL_FEATURE_SOC_PDB_COUNT; instance++)
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{
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if (s_pdbBases[instance] == base)
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{
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break;
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}
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}
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assert(instance < FSL_FEATURE_SOC_PDB_COUNT);
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return instance;
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}
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void PDB_Init(PDB_Type *base, const pdb_config_t *config)
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{
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assert(NULL != config);
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uint32_t tmp32;
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/* Enable the clock. */
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CLOCK_EnableClock(s_pdbClocks[PDB_GetInstance(base)]);
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/* Configure. */
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/* PDBx_SC. */
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tmp32 = base->SC &
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~(PDB_SC_LDMOD_MASK | PDB_SC_PRESCALER_MASK | PDB_SC_TRGSEL_MASK | PDB_SC_MULT_MASK | PDB_SC_CONT_MASK);
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tmp32 |= PDB_SC_LDMOD(config->loadValueMode) | PDB_SC_PRESCALER(config->prescalerDivider) |
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PDB_SC_TRGSEL(config->triggerInputSource) | PDB_SC_MULT(config->dividerMultiplicationFactor);
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if (config->enableContinuousMode)
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{
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tmp32 |= PDB_SC_CONT_MASK;
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}
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base->SC = tmp32;
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PDB_Enable(base, true); /* Enable the PDB module. */
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}
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void PDB_Deinit(PDB_Type *base)
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{
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PDB_Enable(base, false); /* Disable the PDB module. */
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/* Disable the clock. */
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CLOCK_DisableClock(s_pdbClocks[PDB_GetInstance(base)]);
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}
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void PDB_GetDefaultConfig(pdb_config_t *config)
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{
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assert(NULL != config);
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config->loadValueMode = kPDB_LoadValueImmediately;
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config->prescalerDivider = kPDB_PrescalerDivider1;
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config->dividerMultiplicationFactor = kPDB_DividerMultiplicationFactor1;
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config->triggerInputSource = kPDB_TriggerSoftware;
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config->enableContinuousMode = false;
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}
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#if defined(FSL_FEATURE_PDB_HAS_DAC) && FSL_FEATURE_PDB_HAS_DAC
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void PDB_SetDACTriggerConfig(PDB_Type *base, uint32_t channel, pdb_dac_trigger_config_t *config)
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{
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assert(channel < PDB_INTC_COUNT);
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assert(NULL != config);
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uint32_t tmp32 = 0U;
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/* PDBx_DACINTC. */
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if (config->enableExternalTriggerInput)
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{
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tmp32 |= PDB_INTC_EXT_MASK;
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}
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if (config->enableIntervalTrigger)
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{
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tmp32 |= PDB_INTC_TOE_MASK;
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}
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base->DAC[channel].INTC = tmp32;
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}
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#endif /* FSL_FEATURE_PDB_HAS_DAC */
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