168 lines
5.9 KiB
C
168 lines
5.9 KiB
C
|
/*
|
||
|
|
ChibiOS - Copyright (C) 2006..2016 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.h
|
||
|
|
* @brief I2S Driver macros and structures.
|
||
|
|
*
|
||
|
|
* @addtogroup I2S
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef HAL_I2S_H
|
||
|
|
#define HAL_I2S_H
|
||
|
|
|
||
|
|
#if (HAL_USE_I2S == TRUE) || defined(__DOXYGEN__)
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver constants. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @name I2S modes
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
#define I2S_MODE_SLAVE 0
|
||
|
|
#define I2S_MODE_MASTER 1
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver pre-compile time settings. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Derived constants and error checks. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver data structures and types. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Driver state machine possible states.
|
||
|
|
*/
|
||
|
|
typedef enum {
|
||
|
|
I2S_UNINIT = 0, /**< Not initialized. */
|
||
|
|
I2S_STOP = 1, /**< Stopped. */
|
||
|
|
I2S_READY = 2, /**< Ready. */
|
||
|
|
I2S_ACTIVE = 3, /**< Active. */
|
||
|
|
I2S_COMPLETE = 4 /**< Transmission complete. */
|
||
|
|
} i2sstate_t;
|
||
|
|
|
||
|
|
#include "hal_i2s_lld.h"
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver macros. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @name Macro Functions
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @brief Starts a I2S data exchange.
|
||
|
|
*
|
||
|
|
* @param[in] i2sp pointer to the @p I2SDriver object
|
||
|
|
*
|
||
|
|
* @iclass
|
||
|
|
*/
|
||
|
|
#define i2sStartExchangeI(i2sp) { \
|
||
|
|
i2s_lld_start_exchange(i2sp); \
|
||
|
|
(i2sp)->state = I2S_ACTIVE; \
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Stops the ongoing data exchange.
|
||
|
|
* @details The ongoing data exchange, if any, is stopped, if the driver
|
||
|
|
* was not active the function does nothing.
|
||
|
|
*
|
||
|
|
* @param[in] i2sp pointer to the @p I2SDriver object
|
||
|
|
*
|
||
|
|
* @iclass
|
||
|
|
*/
|
||
|
|
#define i2sStopExchangeI(i2sp) { \
|
||
|
|
i2s_lld_stop_exchange(i2sp); \
|
||
|
|
(i2sp)->state = I2S_READY; \
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Common ISR code, half buffer event.
|
||
|
|
* @details This code handles the portable part of the ISR code:
|
||
|
|
* - Callback invocation.
|
||
|
|
* .
|
||
|
|
* @note This macro is meant to be used in the low level drivers
|
||
|
|
* implementation only.
|
||
|
|
*
|
||
|
|
* @param[in] i2sp pointer to the @p I2CDriver object
|
||
|
|
*
|
||
|
|
* @notapi
|
||
|
|
*/
|
||
|
|
#define _i2s_isr_half_code(i2sp) { \
|
||
|
|
if ((i2sp)->config->end_cb != NULL) { \
|
||
|
|
(i2sp)->config->end_cb(i2sp, 0, (i2sp)->config->size / 2); \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Common ISR code.
|
||
|
|
* @details This code handles the portable part of the ISR code:
|
||
|
|
* - Callback invocation.
|
||
|
|
* - Driver state transitions.
|
||
|
|
* .
|
||
|
|
* @note This macro is meant to be used in the low level drivers
|
||
|
|
* implementation only.
|
||
|
|
*
|
||
|
|
* @param[in] i2sp pointer to the @p I2CDriver object
|
||
|
|
*
|
||
|
|
* @notapi
|
||
|
|
*/
|
||
|
|
#define _i2s_isr_full_code(i2sp) { \
|
||
|
|
if ((i2sp)->config->end_cb) { \
|
||
|
|
(i2sp)->state = I2S_COMPLETE; \
|
||
|
|
(i2sp)->config->end_cb(i2sp, \
|
||
|
|
(i2sp)->config->size / 2, \
|
||
|
|
(i2sp)->config->size / 2); \
|
||
|
|
if ((i2sp)->state == I2S_COMPLETE) \
|
||
|
|
(i2sp)->state = I2S_READY; \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
(i2sp)->state = I2S_READY; \
|
||
|
|
}
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* External declarations. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
void i2sInit(void);
|
||
|
|
void i2sObjectInit(I2SDriver *i2sp);
|
||
|
|
void i2sStart(I2SDriver *i2sp, const I2SConfig *config);
|
||
|
|
void i2sStop(I2SDriver *i2sp);
|
||
|
|
void i2sStartExchange(I2SDriver *i2sp);
|
||
|
|
void i2sStopExchange(I2SDriver *i2sp);
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* HAL_USE_I2S == TRUE */
|
||
|
|
|
||
|
|
#endif /* HAL_I2S_H */
|
||
|
|
|
||
|
|
/** @} */
|