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_K66F/drivers/fsl_pdb.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_pdb.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 PDB module.
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 * @param base PDB peripheral base address
<> 144:ef7eb2e8f9f7 40 */
<> 144:ef7eb2e8f9f7 41 static uint32_t PDB_GetInstance(PDB_Type *base);
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /*******************************************************************************
<> 144:ef7eb2e8f9f7 44 * Variables
<> 144:ef7eb2e8f9f7 45 ******************************************************************************/
<> 144:ef7eb2e8f9f7 46 /*! @brief Pointers to PDB bases for each instance. */
<> 144:ef7eb2e8f9f7 47 static PDB_Type *const s_pdbBases[] = PDB_BASE_PTRS;
<> 144:ef7eb2e8f9f7 48 /*! @brief Pointers to PDB clocks for each instance. */
<> 144:ef7eb2e8f9f7 49 const clock_ip_name_t s_pdbClocks[] = PDB_CLOCKS;
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 /*******************************************************************************
<> 144:ef7eb2e8f9f7 52 * Codes
<> 144:ef7eb2e8f9f7 53 ******************************************************************************/
<> 144:ef7eb2e8f9f7 54 static uint32_t PDB_GetInstance(PDB_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_PDB_COUNT; instance++)
<> 144:ef7eb2e8f9f7 60 {
<> 144:ef7eb2e8f9f7 61 if (s_pdbBases[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_PDB_COUNT);
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 return instance;
<> 144:ef7eb2e8f9f7 70 }
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 void PDB_Init(PDB_Type *base, const pdb_config_t *config)
<> 144:ef7eb2e8f9f7 73 {
<> 144:ef7eb2e8f9f7 74 assert(NULL != config);
<> 144:ef7eb2e8f9f7 75
<> 144:ef7eb2e8f9f7 76 uint32_t tmp32;
<> 144:ef7eb2e8f9f7 77
<> 144:ef7eb2e8f9f7 78 /* Enable the clock. */
<> 144:ef7eb2e8f9f7 79 CLOCK_EnableClock(s_pdbClocks[PDB_GetInstance(base)]);
<> 144:ef7eb2e8f9f7 80
<> 144:ef7eb2e8f9f7 81 /* Configure. */
<> 144:ef7eb2e8f9f7 82 /* PDBx_SC. */
<> 144:ef7eb2e8f9f7 83 tmp32 = base->SC &
<> 144:ef7eb2e8f9f7 84 ~(PDB_SC_LDMOD_MASK | PDB_SC_PRESCALER_MASK | PDB_SC_TRGSEL_MASK | PDB_SC_MULT_MASK | PDB_SC_CONT_MASK);
<> 144:ef7eb2e8f9f7 85
<> 144:ef7eb2e8f9f7 86 tmp32 |= PDB_SC_LDMOD(config->loadValueMode) | PDB_SC_PRESCALER(config->prescalerDivider) |
<> 144:ef7eb2e8f9f7 87 PDB_SC_TRGSEL(config->triggerInputSource) | PDB_SC_MULT(config->dividerMultiplicationFactor);
<> 144:ef7eb2e8f9f7 88 if (config->enableContinuousMode)
<> 144:ef7eb2e8f9f7 89 {
<> 144:ef7eb2e8f9f7 90 tmp32 |= PDB_SC_CONT_MASK;
<> 144:ef7eb2e8f9f7 91 }
<> 144:ef7eb2e8f9f7 92 base->SC = tmp32;
<> 144:ef7eb2e8f9f7 93
<> 144:ef7eb2e8f9f7 94 PDB_Enable(base, true); /* Enable the PDB module. */
<> 144:ef7eb2e8f9f7 95 }
<> 144:ef7eb2e8f9f7 96
<> 144:ef7eb2e8f9f7 97 void PDB_Deinit(PDB_Type *base)
<> 144:ef7eb2e8f9f7 98 {
<> 144:ef7eb2e8f9f7 99 PDB_Enable(base, false); /* Disable the PDB module. */
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 /* Disable the clock. */
<> 144:ef7eb2e8f9f7 102 CLOCK_DisableClock(s_pdbClocks[PDB_GetInstance(base)]);
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 void PDB_GetDefaultConfig(pdb_config_t *config)
<> 144:ef7eb2e8f9f7 106 {
<> 144:ef7eb2e8f9f7 107 assert(NULL != config);
<> 144:ef7eb2e8f9f7 108
<> 144:ef7eb2e8f9f7 109 config->loadValueMode = kPDB_LoadValueImmediately;
<> 144:ef7eb2e8f9f7 110 config->prescalerDivider = kPDB_PrescalerDivider1;
<> 144:ef7eb2e8f9f7 111 config->dividerMultiplicationFactor = kPDB_DividerMultiplicationFactor1;
<> 144:ef7eb2e8f9f7 112 config->triggerInputSource = kPDB_TriggerSoftware;
<> 144:ef7eb2e8f9f7 113 config->enableContinuousMode = false;
<> 144:ef7eb2e8f9f7 114 }
<> 144:ef7eb2e8f9f7 115
<> 144:ef7eb2e8f9f7 116 #if defined(FSL_FEATURE_PDB_HAS_DAC) && FSL_FEATURE_PDB_HAS_DAC
<> 144:ef7eb2e8f9f7 117 void PDB_SetDACTriggerConfig(PDB_Type *base, uint32_t channel, pdb_dac_trigger_config_t *config)
<> 144:ef7eb2e8f9f7 118 {
<> 144:ef7eb2e8f9f7 119 assert(channel < PDB_INTC_COUNT);
<> 144:ef7eb2e8f9f7 120 assert(NULL != config);
<> 144:ef7eb2e8f9f7 121
<> 144:ef7eb2e8f9f7 122 uint32_t tmp32 = 0U;
<> 144:ef7eb2e8f9f7 123
<> 144:ef7eb2e8f9f7 124 /* PDBx_DACINTC. */
<> 144:ef7eb2e8f9f7 125 if (config->enableExternalTriggerInput)
<> 144:ef7eb2e8f9f7 126 {
<> 144:ef7eb2e8f9f7 127 tmp32 |= PDB_INTC_EXT_MASK;
<> 144:ef7eb2e8f9f7 128 }
<> 144:ef7eb2e8f9f7 129 if (config->enableIntervalTrigger)
<> 144:ef7eb2e8f9f7 130 {
<> 144:ef7eb2e8f9f7 131 tmp32 |= PDB_INTC_TOE_MASK;
<> 144:ef7eb2e8f9f7 132 }
<> 144:ef7eb2e8f9f7 133 base->DAC[channel].INTC = tmp32;
<> 144:ef7eb2e8f9f7 134 }
<> 144:ef7eb2e8f9f7 135 #endif /* FSL_FEATURE_PDB_HAS_DAC */