hal_i2s_lld.h

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/*
    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
 
        http://www.apache.org/licenses/LICENSE-2.0
 
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
 
/**
 * @file    hal_i2s_lld.h
 * @brief   PLATFORM I2S subsystem low level driver header.
 *
 * @addtogroup I2S
 * @{
 */
 
#ifndef HAL_I2S_LLD_H
#define HAL_I2S_LLD_H
 
#if (HAL_USE_I2S == TRUE) || defined(__DOXYGEN__)
 
/*===========================================================================*/
/* Driver constants.                                                         */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver pre-compile time settings.                                         */
/*===========================================================================*/
 
/**
 * @name    PLATFORM configuration options
 * @{
 */
/**
 * @brief   I2SD1 driver enable switch.
 * @details If set to @p TRUE the support for I2S1 is included.
 * @note    The default is @p FALSE.
 */
#if !defined(PLATFORM_I2S_USE_I2S1) || defined(__DOXYGEN__)
#define PLATFORM_I2S_USE_I2S1                  FALSE
#endif
/** @} */
 
/*===========================================================================*/
/* Derived constants and error checks.                                       */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver data structures and types.                                         */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver macros.                                                            */
/*===========================================================================*/
 
/**
 * @brief   Low level fields of the I2S driver structure.
 */
#define i2s_lld_driver_fields                                               \
  /* Dummy field, it is not needed.*/                                       \
  uint32_t                  dummy;
 
/**
 * @brief   Low level fields of the I2S configuration structure.
 */
#define i2s_lld_config_fields                                               \
  /* Dummy configuration, it is not needed.*/                               \
  uint32_t                  dummy;
 
/*===========================================================================*/
/* External declarations.                                                    */
/*===========================================================================*/
 
#if (PLATFORM_I2S_USE_I2S1 == TRUE) && !defined(__DOXYGEN__)
extern I2SDriver I2SD1;
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
  void i2s_lld_init(void);
  void i2s_lld_start(I2SDriver *i2sp);
  void i2s_lld_stop(I2SDriver *i2sp);
  void i2s_lld_start_exchange(I2SDriver *i2sp);
  void i2s_lld_stop_exchange(I2SDriver *i2sp);
#ifdef __cplusplus
}
#endif
 
#endif /* HAL_USE_I2S == TRUE */
 
#endif /* HAL_I2S_LLD_H */
 
/** @} */