153 lines
5.3 KiB
C
153 lines
5.3 KiB
C
/*
|
|
* Copyright (c) 2016, Freescale Semiconductor, Inc.
|
|
* Copyright 2016-2017, 2020 NXP
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include "fsl_mrt.h"
|
|
|
|
/* Component ID definition, used by tools. */
|
|
#ifndef FSL_COMPONENT_ID
|
|
#define FSL_COMPONENT_ID "platform.drivers.mrt"
|
|
#endif
|
|
|
|
/*******************************************************************************
|
|
* Prototypes
|
|
******************************************************************************/
|
|
/*!
|
|
* @brief Gets the instance from the base address
|
|
*
|
|
* @param base Multi-Rate timer peripheral base address
|
|
*
|
|
* @return The MRT instance
|
|
*/
|
|
static uint32_t MRT_GetInstance(MRT_Type *base);
|
|
|
|
/*******************************************************************************
|
|
* Variables
|
|
******************************************************************************/
|
|
/*! @brief Pointers to MRT bases for each instance. */
|
|
static MRT_Type *const s_mrtBases[] = MRT_BASE_PTRS;
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
/*! @brief Pointers to MRT clocks for each instance. */
|
|
static const clock_ip_name_t s_mrtClocks[] = MRT_CLOCKS;
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_RESET_CONTROL) && FSL_SDK_DISABLE_DRIVER_RESET_CONTROL)
|
|
#if defined(MRT_RSTS_N)
|
|
/*! @brief Pointers to MRT resets for each instance, writing a zero asserts the reset */
|
|
static const reset_ip_name_t s_mrtResets[] = MRT_RSTS_N;
|
|
#elif defined(MRT_RSTS)
|
|
/*! @brief Pointers to MRT resets for each instance, writing a one asserts the reset */
|
|
static const reset_ip_name_t s_mrtResets[] = MRT_RSTS;
|
|
#endif
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_RESET_CONTROL */
|
|
|
|
/*******************************************************************************
|
|
* Code
|
|
******************************************************************************/
|
|
static uint32_t MRT_GetInstance(MRT_Type *base)
|
|
{
|
|
uint32_t instance;
|
|
uint32_t mrtArrayCount = (sizeof(s_mrtBases) / sizeof(s_mrtBases[0]));
|
|
|
|
/* Find the instance index from base address mappings. */
|
|
for (instance = 0; instance < mrtArrayCount; instance++)
|
|
{
|
|
if (s_mrtBases[instance] == base)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
assert(instance < mrtArrayCount);
|
|
|
|
return instance;
|
|
}
|
|
|
|
/*!
|
|
* brief Ungates the MRT clock and configures the peripheral for basic operation.
|
|
*
|
|
* note This API should be called at the beginning of the application using the MRT driver.
|
|
*
|
|
* param base Multi-Rate timer peripheral base address
|
|
* param config Pointer to user's MRT config structure. If MRT has MULTITASK bit field in
|
|
* MODCFG reigster, param config is useless.
|
|
*/
|
|
void MRT_Init(MRT_Type *base, const mrt_config_t *config)
|
|
{
|
|
assert(config != NULL);
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
/* Ungate the MRT clock */
|
|
CLOCK_EnableClock(s_mrtClocks[MRT_GetInstance(base)]);
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_RESET_CONTROL) && FSL_SDK_DISABLE_DRIVER_RESET_CONTROL)
|
|
#if defined(MRT_RSTS_N) || defined(MRT_RSTS)
|
|
/* Reset the module. */
|
|
RESET_PeripheralReset(s_mrtResets[MRT_GetInstance(base)]);
|
|
#endif
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_RESET_CONTROL */
|
|
|
|
#if !(defined(FSL_FEATURE_MRT_HAS_NO_MODCFG_MULTITASK) && FSL_FEATURE_MRT_HAS_NO_MODCFG_MULTITASK)
|
|
/* Set timer operating mode */
|
|
base->MODCFG = MRT_MODCFG_MULTITASK(config->enableMultiTask);
|
|
#endif
|
|
}
|
|
|
|
/*!
|
|
* brief Gate the MRT clock
|
|
*
|
|
* param base Multi-Rate timer peripheral base address
|
|
*/
|
|
void MRT_Deinit(MRT_Type *base)
|
|
{
|
|
/* Stop all the timers */
|
|
MRT_StopTimer(base, kMRT_Channel_0);
|
|
MRT_StopTimer(base, kMRT_Channel_1);
|
|
#if (FSL_FEATURE_MRT_NUMBER_OF_CHANNELS > 2U)
|
|
MRT_StopTimer(base, kMRT_Channel_2);
|
|
#endif
|
|
#if (FSL_FEATURE_MRT_NUMBER_OF_CHANNELS > 3U)
|
|
MRT_StopTimer(base, kMRT_Channel_3);
|
|
#endif
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
/* Gate the MRT clock*/
|
|
CLOCK_DisableClock(s_mrtClocks[MRT_GetInstance(base)]);
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
|
|
}
|
|
|
|
/*!
|
|
* brief Used to update the timer period in units of count.
|
|
*
|
|
* The new value will be immediately loaded or will be loaded at the end of the current time
|
|
* interval. For one-shot interrupt mode the new value will be immediately loaded.
|
|
*
|
|
* note User can call the utility macros provided in fsl_common.h to convert to ticks
|
|
*
|
|
* param base Multi-Rate timer peripheral base address
|
|
* param channel Timer channel number
|
|
* param count Timer period in units of ticks
|
|
* param immediateLoad true: Load the new value immediately into the TIMER register;
|
|
* false: Load the new value at the end of current timer interval
|
|
*/
|
|
void MRT_UpdateTimerPeriod(MRT_Type *base, mrt_chnl_t channel, uint32_t count, bool immediateLoad)
|
|
{
|
|
assert((uint8_t)channel < (uint8_t)FSL_FEATURE_MRT_NUMBER_OF_CHANNELS);
|
|
|
|
uint32_t newValue = count;
|
|
if (((base->CHANNEL[channel].CTRL & MRT_CHANNEL_CTRL_MODE_MASK) == (uint8_t)kMRT_OneShotMode) || (immediateLoad))
|
|
{
|
|
/* For one-shot interrupt mode, load the new value immediately even if user forgot to enable */
|
|
newValue |= MRT_CHANNEL_INTVAL_LOAD_MASK;
|
|
}
|
|
|
|
/* Update the timer interval value */
|
|
base->CHANNEL[channel].INTVAL = newValue;
|
|
}
|