* arch/xtensa/src/esp32/esp32_i2s.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
#ifndef __ARCH_XTENSA_SRC_ESP32_ESP32_I2S_H
#define __ARCH_XTENSA_SRC_ESP32_ESP32_I2S_H
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/audio/i2s.h>
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
#ifdef CONFIG_ESP32_I2S
#define ESP32_I2S0 0
#define ESP32_I2S1 1
* Public Function Prototypes
****************************************************************************/
* Name: esp32_i2sbus_initialize
*
* Description:
* Initialize the selected I2S port
*
* Input Parameters:
* Port number (for hardware that has multiple I2S interfaces)
*
* Returned Value:
* Valid I2S device structure reference on success; a NULL on failure
*
****************************************************************************/
struct i2s_dev_s *esp32_i2sbus_initialize(int port);
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif