125 lines
4.6 KiB
C
125 lines
4.6 KiB
C
/*
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* The Clear BSD License
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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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 (subject to the limitations in the disclaimer below) provided
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* 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 the copyright holder 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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* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
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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_gpt.h"
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/* Component ID definition, used by tools. */
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#ifndef FSL_COMPONENT_ID
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#define FSL_COMPONENT_ID "platform.drivers.gpt"
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#endif
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*******************************************************************************
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* Variables
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******************************************************************************/
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/*! @brief Pointers to GPT bases for each instance. */
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static GPT_Type *const s_gptBases[] = GPT_BASE_PTRS;
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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/*! @brief Pointers to GPT clocks for each instance. */
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static const clock_ip_name_t s_gptClocks[] = GPT_CLOCKS;
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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/*******************************************************************************
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* Code
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******************************************************************************/
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static uint32_t GPT_GetInstance(GPT_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 = 0U; instance < ARRAY_SIZE(s_gptBases); instance++)
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{
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if (s_gptBases[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 < ARRAY_SIZE(s_gptBases));
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return instance;
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}
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void GPT_Init(GPT_Type *base, const gpt_config_t *initConfig)
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{
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assert(initConfig);
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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/* Ungate the GPT clock*/
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CLOCK_EnableClock(s_gptClocks[GPT_GetInstance(base)]);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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base->CR = 0U;
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GPT_SoftwareReset(base);
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base->CR =
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(initConfig->enableFreeRun ? GPT_CR_FRR_MASK : 0U) | (initConfig->enableRunInWait ? GPT_CR_WAITEN_MASK : 0U) |
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(initConfig->enableRunInStop ? GPT_CR_STOPEN_MASK : 0U) |
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(initConfig->enableRunInDoze ? GPT_CR_DOZEEN_MASK : 0U) |
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(initConfig->enableRunInDbg ? GPT_CR_DBGEN_MASK : 0U) | (initConfig->enableMode ? GPT_CR_ENMOD_MASK : 0U);
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GPT_SetClockSource(base, initConfig->clockSource);
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GPT_SetClockDivider(base, initConfig->divider);
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}
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void GPT_Deinit(GPT_Type *base)
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{
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/* Disable GPT timers */
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base->CR = 0U;
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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/* Gate the GPT clock*/
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CLOCK_DisableClock(s_gptClocks[GPT_GetInstance(base)]);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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}
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void GPT_GetDefaultConfig(gpt_config_t *config)
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{
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assert(config);
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config->clockSource = kGPT_ClockSource_Periph;
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config->divider = 1U;
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config->enableRunInStop = true;
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config->enableRunInWait = true;
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config->enableRunInDoze = false;
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config->enableRunInDbg = false;
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config->enableFreeRun = false;
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config->enableMode = true;
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}
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