Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_KL43Z/drivers/fsl_dac.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
This updates the lib to the mbed lib v125

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /*
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2015, Freescale Semiconductor, Inc.
<> 144:ef7eb2e8f9f7 3 * All rights reserved.
<> 144:ef7eb2e8f9f7 4 *
<> 144:ef7eb2e8f9f7 5 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 6 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * o Redistributions of source code must retain the above copyright notice, this list
<> 144:ef7eb2e8f9f7 9 * of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * o Redistributions in binary form must reproduce the above copyright notice, this
<> 144:ef7eb2e8f9f7 12 * list of conditions and the following disclaimer in the documentation and/or
<> 144:ef7eb2e8f9f7 13 * other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 14 *
<> 144:ef7eb2e8f9f7 15 * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
<> 144:ef7eb2e8f9f7 16 * contributors may be used to endorse or promote products derived from this
<> 144:ef7eb2e8f9f7 17 * software without specific prior written permission.
<> 144:ef7eb2e8f9f7 18 *
<> 144:ef7eb2e8f9f7 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
<> 144:ef7eb2e8f9f7 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
<> 144:ef7eb2e8f9f7 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
<> 144:ef7eb2e8f9f7 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
<> 144:ef7eb2e8f9f7 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
<> 144:ef7eb2e8f9f7 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
<> 144:ef7eb2e8f9f7 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<> 144:ef7eb2e8f9f7 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
<> 144:ef7eb2e8f9f7 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 #include "fsl_dac.h"
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 /*******************************************************************************
<> 144:ef7eb2e8f9f7 34 * Prototypes
<> 144:ef7eb2e8f9f7 35 ******************************************************************************/
<> 144:ef7eb2e8f9f7 36 /*!
<> 144:ef7eb2e8f9f7 37 * @brief Get instance number for DAC module.
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 * @param base DAC peripheral base address
<> 144:ef7eb2e8f9f7 40 */
<> 144:ef7eb2e8f9f7 41 static uint32_t DAC_GetInstance(DAC_Type *base);
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /*******************************************************************************
<> 144:ef7eb2e8f9f7 44 * Variables
<> 144:ef7eb2e8f9f7 45 ******************************************************************************/
<> 144:ef7eb2e8f9f7 46 /*! @brief Pointers to DAC bases for each instance. */
<> 144:ef7eb2e8f9f7 47 static DAC_Type *const s_dacBases[] = DAC_BASE_PTRS;
<> 144:ef7eb2e8f9f7 48 /*! @brief Pointers to DAC clocks for each instance. */
<> 144:ef7eb2e8f9f7 49 const clock_ip_name_t s_dacClocks[] = DAC_CLOCKS;
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 /*******************************************************************************
<> 144:ef7eb2e8f9f7 52 * Codes
<> 144:ef7eb2e8f9f7 53 ******************************************************************************/
<> 144:ef7eb2e8f9f7 54 static uint32_t DAC_GetInstance(DAC_Type *base)
<> 144:ef7eb2e8f9f7 55 {
<> 144:ef7eb2e8f9f7 56 uint32_t instance;
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 /* Find the instance index from base address mappings. */
<> 144:ef7eb2e8f9f7 59 for (instance = 0; instance < FSL_FEATURE_SOC_DAC_COUNT; instance++)
<> 144:ef7eb2e8f9f7 60 {
<> 144:ef7eb2e8f9f7 61 if (s_dacBases[instance] == base)
<> 144:ef7eb2e8f9f7 62 {
<> 144:ef7eb2e8f9f7 63 break;
<> 144:ef7eb2e8f9f7 64 }
<> 144:ef7eb2e8f9f7 65 }
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 assert(instance < FSL_FEATURE_SOC_DAC_COUNT);
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 return instance;
<> 144:ef7eb2e8f9f7 70 }
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 void DAC_Init(DAC_Type *base, const dac_config_t *config)
<> 144:ef7eb2e8f9f7 73 {
<> 144:ef7eb2e8f9f7 74 assert(NULL != config);
<> 144:ef7eb2e8f9f7 75
<> 144:ef7eb2e8f9f7 76 uint8_t tmp8;
<> 144:ef7eb2e8f9f7 77
<> 144:ef7eb2e8f9f7 78 /* Enable the clock. */
<> 144:ef7eb2e8f9f7 79 CLOCK_EnableClock(s_dacClocks[DAC_GetInstance(base)]);
<> 144:ef7eb2e8f9f7 80
<> 144:ef7eb2e8f9f7 81 /* Configure. */
<> 144:ef7eb2e8f9f7 82 /* DACx_C0. */
<> 144:ef7eb2e8f9f7 83 tmp8 = base->C0 & ~(DAC_C0_DACRFS_MASK | DAC_C0_LPEN_MASK);
<> 144:ef7eb2e8f9f7 84 if (kDAC_ReferenceVoltageSourceVref2 == config->referenceVoltageSource)
<> 144:ef7eb2e8f9f7 85 {
<> 144:ef7eb2e8f9f7 86 tmp8 |= DAC_C0_DACRFS_MASK;
<> 144:ef7eb2e8f9f7 87 }
<> 144:ef7eb2e8f9f7 88 if (config->enableLowPowerMode)
<> 144:ef7eb2e8f9f7 89 {
<> 144:ef7eb2e8f9f7 90 tmp8 |= DAC_C0_LPEN_MASK;
<> 144:ef7eb2e8f9f7 91 }
<> 144:ef7eb2e8f9f7 92 base->C0 = tmp8;
<> 144:ef7eb2e8f9f7 93
<> 144:ef7eb2e8f9f7 94 DAC_Enable(base, true);
<> 144:ef7eb2e8f9f7 95 }
<> 144:ef7eb2e8f9f7 96
<> 144:ef7eb2e8f9f7 97 void DAC_Deinit(DAC_Type *base)
<> 144:ef7eb2e8f9f7 98 {
<> 144:ef7eb2e8f9f7 99 DAC_Enable(base, false);
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 /* Disable the clock. */
<> 144:ef7eb2e8f9f7 102 CLOCK_DisableClock(s_dacClocks[DAC_GetInstance(base)]);
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 void DAC_GetDefaultConfig(dac_config_t *config)
<> 144:ef7eb2e8f9f7 106 {
<> 144:ef7eb2e8f9f7 107 assert(NULL != config);
<> 144:ef7eb2e8f9f7 108
<> 144:ef7eb2e8f9f7 109 config->referenceVoltageSource = kDAC_ReferenceVoltageSourceVref2;
<> 144:ef7eb2e8f9f7 110 config->enableLowPowerMode = false;
<> 144:ef7eb2e8f9f7 111 }
<> 144:ef7eb2e8f9f7 112
<> 144:ef7eb2e8f9f7 113 void DAC_SetBufferConfig(DAC_Type *base, const dac_buffer_config_t *config)
<> 144:ef7eb2e8f9f7 114 {
<> 144:ef7eb2e8f9f7 115 assert(NULL != config);
<> 144:ef7eb2e8f9f7 116
<> 144:ef7eb2e8f9f7 117 uint8_t tmp8;
<> 144:ef7eb2e8f9f7 118
<> 144:ef7eb2e8f9f7 119 /* DACx_C0. */
<> 144:ef7eb2e8f9f7 120 tmp8 = base->C0 & ~(DAC_C0_DACTRGSEL_MASK);
<> 144:ef7eb2e8f9f7 121 if (kDAC_BufferTriggerBySoftwareMode == config->triggerMode)
<> 144:ef7eb2e8f9f7 122 {
<> 144:ef7eb2e8f9f7 123 tmp8 |= DAC_C0_DACTRGSEL_MASK;
<> 144:ef7eb2e8f9f7 124 }
<> 144:ef7eb2e8f9f7 125 base->C0 = tmp8;
<> 144:ef7eb2e8f9f7 126
<> 144:ef7eb2e8f9f7 127 /* DACx_C1. */
<> 144:ef7eb2e8f9f7 128 tmp8 = base->C1 &
<> 144:ef7eb2e8f9f7 129 ~(
<> 144:ef7eb2e8f9f7 130 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
<> 144:ef7eb2e8f9f7 131 DAC_C1_DACBFWM_MASK |
<> 144:ef7eb2e8f9f7 132 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
<> 144:ef7eb2e8f9f7 133 DAC_C1_DACBFMD_MASK);
<> 144:ef7eb2e8f9f7 134 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
<> 144:ef7eb2e8f9f7 135 tmp8 |= DAC_C1_DACBFWM(config->watermark);
<> 144:ef7eb2e8f9f7 136 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
<> 144:ef7eb2e8f9f7 137 tmp8 |= DAC_C1_DACBFMD(config->workMode);
<> 144:ef7eb2e8f9f7 138 base->C1 = tmp8;
<> 144:ef7eb2e8f9f7 139
<> 144:ef7eb2e8f9f7 140 /* DACx_C2. */
<> 144:ef7eb2e8f9f7 141 tmp8 = base->C2 & ~DAC_C2_DACBFUP_MASK;
<> 144:ef7eb2e8f9f7 142 tmp8 |= DAC_C2_DACBFUP(config->upperLimit);
<> 144:ef7eb2e8f9f7 143 base->C2 = tmp8;
<> 144:ef7eb2e8f9f7 144 }
<> 144:ef7eb2e8f9f7 145
<> 144:ef7eb2e8f9f7 146 void DAC_GetDefaultBufferConfig(dac_buffer_config_t *config)
<> 144:ef7eb2e8f9f7 147 {
<> 144:ef7eb2e8f9f7 148 assert(NULL != config);
<> 144:ef7eb2e8f9f7 149
<> 144:ef7eb2e8f9f7 150 config->triggerMode = kDAC_BufferTriggerBySoftwareMode;
<> 144:ef7eb2e8f9f7 151 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
<> 144:ef7eb2e8f9f7 152 config->watermark = kDAC_BufferWatermark1Word;
<> 144:ef7eb2e8f9f7 153 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
<> 144:ef7eb2e8f9f7 154 config->workMode = kDAC_BufferWorkAsNormalMode;
<> 144:ef7eb2e8f9f7 155 config->upperLimit = DAC_DATL_COUNT - 1U;
<> 144:ef7eb2e8f9f7 156 }
<> 144:ef7eb2e8f9f7 157
<> 144:ef7eb2e8f9f7 158 void DAC_SetBufferValue(DAC_Type *base, uint8_t index, uint16_t value)
<> 144:ef7eb2e8f9f7 159 {
<> 144:ef7eb2e8f9f7 160 assert(index < DAC_DATL_COUNT);
<> 144:ef7eb2e8f9f7 161
<> 144:ef7eb2e8f9f7 162 base->DAT[index].DATL = (uint8_t)(0xFFU & value); /* Low 8-bit. */
<> 144:ef7eb2e8f9f7 163 base->DAT[index].DATH = (uint8_t)((0xF00U & value) >> 8); /* High 4-bit. */
<> 144:ef7eb2e8f9f7 164 }
<> 144:ef7eb2e8f9f7 165
<> 144:ef7eb2e8f9f7 166 void DAC_SetBufferReadPointer(DAC_Type *base, uint8_t index)
<> 144:ef7eb2e8f9f7 167 {
<> 144:ef7eb2e8f9f7 168 assert(index < DAC_DATL_COUNT);
<> 144:ef7eb2e8f9f7 169
<> 144:ef7eb2e8f9f7 170 uint8_t tmp8 = base->C2 & ~DAC_C2_DACBFRP_MASK;
<> 144:ef7eb2e8f9f7 171
<> 144:ef7eb2e8f9f7 172 tmp8 |= DAC_C2_DACBFRP(index);
<> 144:ef7eb2e8f9f7 173 base->C2 = tmp8;
<> 144:ef7eb2e8f9f7 174 }
<> 144:ef7eb2e8f9f7 175
<> 144:ef7eb2e8f9f7 176 void DAC_EnableBufferInterrupts(DAC_Type *base, uint32_t mask)
<> 144:ef7eb2e8f9f7 177 {
<> 144:ef7eb2e8f9f7 178 mask &= (
<> 144:ef7eb2e8f9f7 179 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
<> 144:ef7eb2e8f9f7 180 DAC_C0_DACBWIEN_MASK |
<> 144:ef7eb2e8f9f7 181 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
<> 144:ef7eb2e8f9f7 182 DAC_C0_DACBTIEN_MASK | DAC_C0_DACBBIEN_MASK);
<> 144:ef7eb2e8f9f7 183 base->C0 |= ((uint8_t)mask); /* Write 1 to enable. */
<> 144:ef7eb2e8f9f7 184 }
<> 144:ef7eb2e8f9f7 185
<> 144:ef7eb2e8f9f7 186 void DAC_DisableBufferInterrupts(DAC_Type *base, uint32_t mask)
<> 144:ef7eb2e8f9f7 187 {
<> 144:ef7eb2e8f9f7 188 mask &= (
<> 144:ef7eb2e8f9f7 189 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
<> 144:ef7eb2e8f9f7 190 DAC_C0_DACBWIEN_MASK |
<> 144:ef7eb2e8f9f7 191 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
<> 144:ef7eb2e8f9f7 192 DAC_C0_DACBTIEN_MASK | DAC_C0_DACBBIEN_MASK);
<> 144:ef7eb2e8f9f7 193 base->C0 &= (uint8_t)(~((uint8_t)mask)); /* Write 0 to disable. */
<> 144:ef7eb2e8f9f7 194 }
<> 144:ef7eb2e8f9f7 195
<> 144:ef7eb2e8f9f7 196 uint32_t DAC_GetBufferStatusFlags(DAC_Type *base)
<> 144:ef7eb2e8f9f7 197 {
<> 144:ef7eb2e8f9f7 198 return (uint32_t)(base->SR & (
<> 144:ef7eb2e8f9f7 199 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
<> 144:ef7eb2e8f9f7 200 DAC_SR_DACBFWMF_MASK |
<> 144:ef7eb2e8f9f7 201 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
<> 144:ef7eb2e8f9f7 202 DAC_SR_DACBFRPTF_MASK | DAC_SR_DACBFRPBF_MASK));
<> 144:ef7eb2e8f9f7 203 }
<> 144:ef7eb2e8f9f7 204
<> 144:ef7eb2e8f9f7 205 void DAC_ClearBufferStatusFlags(DAC_Type *base, uint32_t mask)
<> 144:ef7eb2e8f9f7 206 {
<> 144:ef7eb2e8f9f7 207 mask &= (
<> 144:ef7eb2e8f9f7 208 #if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
<> 144:ef7eb2e8f9f7 209 DAC_SR_DACBFWMF_MASK |
<> 144:ef7eb2e8f9f7 210 #endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
<> 144:ef7eb2e8f9f7 211 DAC_SR_DACBFRPTF_MASK | DAC_SR_DACBFRPBF_MASK);
<> 144:ef7eb2e8f9f7 212 base->SR &= (uint8_t)(~((uint8_t)mask)); /* Write 0 to clear flags. */
<> 144:ef7eb2e8f9f7 213 }