1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* The Clear BSD License
* Copyright (c) 2016, Freescale Semiconductor, Inc.
* Copyright 2016-2017 NXP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted (subject to the limitations in the disclaimer below) provided
* that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_FEATURE_MRT_WRITE_ZERO_ASSERT_RESET) && FSL_FEATURE_MRT_WRITE_ZERO_ASSERT_RESET
/*! @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;
#else
/*! @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
/*******************************************************************************
* 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;
}
void MRT_Init(MRT_Type *base, const mrt_config_t *config)
{
assert(config);
#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 */
/* Reset the module */
RESET_PeripheralReset(s_mrtResets[MRT_GetInstance(base)]);
#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
}
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 */
}
void MRT_UpdateTimerPeriod(MRT_Type *base, mrt_chnl_t channel, uint32_t count, bool immediateLoad)
{
assert(channel < FSL_FEATURE_MRT_NUMBER_OF_CHANNELS);
uint32_t newValue = count;
if (((base->CHANNEL[channel].CTRL & MRT_CHANNEL_CTRL_MODE_MASK) == 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;
}
|
