139 lines
4.5 KiB
C
139 lines
4.5 KiB
C
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/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_dac_lld.h
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* @brief PLATFORM DAC subsystem low level driver header.
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*
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* @addtogroup DAC
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* @{
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*/
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#ifndef HAL_DAC_LLD_H
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#define HAL_DAC_LLD_H
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#if (HAL_USE_DAC == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/**
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* @brief Maximum number of DAC channels per unit.
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*/
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#define DAC_MAX_CHANNELS 2
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name Configuration options
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* @{
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*/
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/**
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* @brief DAC1 CH1 driver enable switch.
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* @details If set to @p TRUE the support for DAC1 channel 1 is included.
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* @note The default is @p FALSE.
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*/
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#if !defined(PLATFORM_DAC_USE_DAC1) || defined(__DOXYGEN__)
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#define PLATFORM_DAC_USE_DAC1 FALSE
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Type of a DAC channel index.
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*/
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typedef uint32_t dacchannel_t;
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/**
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* @brief Type representing a DAC sample.
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*/
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typedef uint16_t dacsample_t;
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/**
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* @brief Possible DAC failure causes.
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* @note Error codes are architecture dependent and should not relied
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* upon.
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*/
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typedef enum {
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DAC_ERR_DMAFAILURE = 0, /**< DMA operations failure. */
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DAC_ERR_UNDERFLOW = 1 /**< DAC overflow condition. */
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} dacerror_t;
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/**
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* @brief Low level fields of the DAC driver structure.
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*/
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#define dac_lld_driver_fields \
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/* Dummy field, it is not needed.*/ \
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uint32_t dummy
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/**
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* @brief Low level fields of the DAC configuration structure.
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*/
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#define dac_lld_config_fields \
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/* Dummy configuration, it is not needed.*/ \
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uint32_t dummy
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/**
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* @brief Low level fields of the DAC group configuration structure.
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*/
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#define dac_lld_conversion_group_fields \
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/* Dummy configuration, it is not needed.*/ \
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uint32_t dummy
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#if (PLATFORM_DAC_USE_DAC1 == TRUE) && !defined(__DOXYGEN__)
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extern DACDriver DACD1;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void dac_lld_init(void);
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void dac_lld_start(DACDriver *dacp);
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void dac_lld_stop(DACDriver *dacp);
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void dac_lld_put_channel(DACDriver *dacp,
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dacchannel_t channel,
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dacsample_t sample);
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void dac_lld_start_conversion(DACDriver *dacp);
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void dac_lld_stop_conversion(DACDriver *dacp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_DAC == TRUE */
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#endif /* HAL_DAC_LLD_H */
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/** @} */
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