Demo/NxpNfcRdLib
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2024-07-08 21:03:06 +08:00
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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright 2016-2017 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_dac.h"
/* Component ID definition, used by tools. */
#ifndef FSL_COMPONENT_ID
#define FSL_COMPONENT_ID "platform.drivers.dac"
#endif
/*******************************************************************************
* Prototypes
******************************************************************************/
/*!
* @brief Get instance number for DAC module.
*
* @param base DAC peripheral base address
*/
static uint32_t DAC_GetInstance(DAC_Type *base);
/*******************************************************************************
* Variables
******************************************************************************/
/*! @brief Pointers to DAC bases for each instance. */
static DAC_Type *const s_dacBases[] = DAC_BASE_PTRS;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/*! @brief Pointers to DAC clocks for each instance. */
static const clock_ip_name_t s_dacClocks[] = DAC_CLOCKS;
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
/*******************************************************************************
* Codes
******************************************************************************/
static uint32_t DAC_GetInstance(DAC_Type *base)
{
uint32_t instance;
/* Find the instance index from base address mappings. */
for (instance = 0; instance < ARRAY_SIZE(s_dacBases); instance++)
{
if (s_dacBases[instance] == base)
{
break;
}
}
assert(instance < ARRAY_SIZE(s_dacBases));
return instance;
}
/*!
* brief Initializes the DAC module.
*
* This function initializes the DAC module including the following operations.
* - Enabling the clock for DAC module.
* - Configuring the DAC converter with a user configuration.
* - Enabling the DAC module.
*
* param base DAC peripheral base address.
* param config Pointer to the configuration structure. See "dac_config_t".
*/
void DAC_Init(DAC_Type *base, const dac_config_t *config)
{
assert(NULL != config);
uint8_t tmp8;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Enable the clock. */
CLOCK_EnableClock(s_dacClocks[DAC_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
/* Configure. */
/* DACx_C0. */
tmp8 = base->C0 & ~(DAC_C0_DACRFS_MASK | DAC_C0_LPEN_MASK);
if (kDAC_ReferenceVoltageSourceVref2 == config->referenceVoltageSource)
{
tmp8 |= DAC_C0_DACRFS_MASK;
}
if (config->enableLowPowerMode)
{
tmp8 |= DAC_C0_LPEN_MASK;
}
base->C0 = tmp8;
/* DAC_Enable(base, true); */
/* Tip: The DAC output can be enabled till then after user sets their own available data in application. */
}
/*!
* brief De-initializes the DAC module.
*
* This function de-initializes the DAC module including the following operations.
* - Disabling the DAC module.
* - Disabling the clock for the DAC module.
*
* param base DAC peripheral base address.
*/
void DAC_Deinit(DAC_Type *base)
{
DAC_Enable(base, false);
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Disable the clock. */
CLOCK_DisableClock(s_dacClocks[DAC_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
}
/*!
* brief Initializes the DAC user configuration structure.
*
* This function initializes the user configuration structure to a default value. The default values are as follows.
* code
* config->referenceVoltageSource = kDAC_ReferenceVoltageSourceVref2;
* config->enableLowPowerMode = false;
* endcode
* param config Pointer to the configuration structure. See "dac_config_t".
*/
void DAC_GetDefaultConfig(dac_config_t *config)
{
assert(NULL != config);
/* Initializes the configure structure to zero. */
memset(config, 0, sizeof(*config));
config->referenceVoltageSource = kDAC_ReferenceVoltageSourceVref2;
config->enableLowPowerMode = false;
}
/*!
* brief Configures the CMP buffer.
*
* param base DAC peripheral base address.
* param config Pointer to the configuration structure. See "dac_buffer_config_t".
*/
void DAC_SetBufferConfig(DAC_Type *base, const dac_buffer_config_t *config)
{
assert(NULL != config);
uint8_t tmp8;
/* DACx_C0. */
tmp8 = base->C0 & ~(DAC_C0_DACTRGSEL_MASK);
if (kDAC_BufferTriggerBySoftwareMode == config->triggerMode)
{
tmp8 |= DAC_C0_DACTRGSEL_MASK;
}
base->C0 = tmp8;
/* DACx_C1. */
tmp8 = base->C1 & ~(
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
DAC_C1_DACBFWM_MASK |
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
DAC_C1_DACBFMD_MASK);
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
tmp8 |= DAC_C1_DACBFWM(config->watermark);
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
tmp8 |= DAC_C1_DACBFMD(config->workMode);
base->C1 = tmp8;
/* DACx_C2. */
tmp8 = base->C2 & ~DAC_C2_DACBFUP_MASK;
tmp8 |= DAC_C2_DACBFUP(config->upperLimit);
base->C2 = tmp8;
}
/*!
* brief Initializes the DAC buffer configuration structure.
*
* This function initializes the DAC buffer configuration structure to default values. The default values are as
* follows.
* code
* config->triggerMode = kDAC_BufferTriggerBySoftwareMode;
* config->watermark = kDAC_BufferWatermark1Word;
* config->workMode = kDAC_BufferWorkAsNormalMode;
* config->upperLimit = DAC_DATL_COUNT - 1U;
* endcode
* param config Pointer to the configuration structure. See "dac_buffer_config_t".
*/
void DAC_GetDefaultBufferConfig(dac_buffer_config_t *config)
{
assert(NULL != config);
/* Initializes the configure structure to zero. */
memset(config, 0, sizeof(*config));
config->triggerMode = kDAC_BufferTriggerBySoftwareMode;
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
config->watermark = kDAC_BufferWatermark1Word;
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
config->workMode = kDAC_BufferWorkAsNormalMode;
config->upperLimit = DAC_DATL_COUNT - 1U;
}
/*!
* brief Sets the value for items in the buffer.
*
* param base DAC peripheral base address.
* param index Setting the index for items in the buffer. The available index should not exceed the size of the DAC
* buffer.
* param value Setting the value for items in the buffer. 12-bits are available.
*/
void DAC_SetBufferValue(DAC_Type *base, uint8_t index, uint16_t value)
{
assert(index < DAC_DATL_COUNT);
base->DAT[index].DATL = (uint8_t)(0xFFU & value); /* Low 8-bit. */
base->DAT[index].DATH = (uint8_t)((0xF00U & value) >> 8); /* High 4-bit. */
}
/*!
* brief Sets the current read pointer of the DAC buffer.
*
* This function sets the current read pointer of the DAC buffer.
* The current output value depends on the item indexed by the read pointer. It is updated either by a
* software trigger or a hardware trigger. After the read pointer changes, the DAC output value also changes.
*
* param base DAC peripheral base address.
* param index Setting an index value for the pointer.
*/
void DAC_SetBufferReadPointer(DAC_Type *base, uint8_t index)
{
assert(index < DAC_DATL_COUNT);
uint8_t tmp8 = base->C2 & ~DAC_C2_DACBFRP_MASK;
tmp8 |= DAC_C2_DACBFRP(index);
base->C2 = tmp8;
}
/*!
* brief Enables interrupts for the DAC buffer.
*
* param base DAC peripheral base address.
* param mask Mask value for interrupts. See "_dac_buffer_interrupt_enable".
*/
void DAC_EnableBufferInterrupts(DAC_Type *base, uint32_t mask)
{
mask &= (
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
DAC_C0_DACBWIEN_MASK |
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
DAC_C0_DACBTIEN_MASK | DAC_C0_DACBBIEN_MASK);
base->C0 |= ((uint8_t)mask); /* Write 1 to enable. */
}
/*!
* brief Disables interrupts for the DAC buffer.
*
* param base DAC peripheral base address.
* param mask Mask value for interrupts. See "_dac_buffer_interrupt_enable".
*/
void DAC_DisableBufferInterrupts(DAC_Type *base, uint32_t mask)
{
mask &= (
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
DAC_C0_DACBWIEN_MASK |
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
DAC_C0_DACBTIEN_MASK | DAC_C0_DACBBIEN_MASK);
base->C0 &= (uint8_t)(~((uint8_t)mask)); /* Write 0 to disable. */
}
/*!
* brief Gets the flags of events for the DAC buffer.
*
* param base DAC peripheral base address.
*
* return Mask value for the asserted flags. See "_dac_buffer_status_flags".
*/
uint32_t DAC_GetBufferStatusFlags(DAC_Type *base)
{
return (uint32_t)(base->SR & (
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
DAC_SR_DACBFWMF_MASK |
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
DAC_SR_DACBFRPTF_MASK | DAC_SR_DACBFRPBF_MASK));
}
/*!
* brief Clears the flags of events for the DAC buffer.
*
* param base DAC peripheral base address.
* param mask Mask value for flags. See "_dac_buffer_status_flags_t".
*/
void DAC_ClearBufferStatusFlags(DAC_Type *base, uint32_t mask)
{
mask &= (
#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
DAC_SR_DACBFWMF_MASK |
#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
DAC_SR_DACBFRPTF_MASK | DAC_SR_DACBFRPBF_MASK);
base->SR &= (uint8_t)(~((uint8_t)mask)); /* Write 0 to clear flags. */
}