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49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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// DO NOT USE THESE APIS IN YOUR APPLICATIONS
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// The following APIs are for internal use, public to other IDF components, but not for users' applications.
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#pragma once
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#include "esp_err.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Register an I2S or I2S variant driver object to platform
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*
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* @note This private API is used to avoid applications from using the same I2S instance for different purpose.
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* @note This function will help enable the peripheral APB clock as well.
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*
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* @param driver_obj Driver object
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* @param port_id I2S port number
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* @return
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* - ESP_OK: The specific I2S port is free and register the new device object successfully
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* - ESP_ERR_INVALID_ARG: Invalid argument, e.g. wrong port_id
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* - ESP_ERR_NOT_FOUND: Specific I2S port is not available
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*/
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esp_err_t i2s_priv_register_object(void *driver_obj, int port_id);
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/**
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* @brief Deregister I2S or I2S variant driver object from platform
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*
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* @note This function will help disable the peripheral APB clock as well.
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*
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* @param port_id I2S port number
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* @return
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* - ESP_OK: Deregister I2S port successfully (i.e. that I2S port can used used by other users after this function returns)
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* - ESP_ERR_INVALID_ARG: Invalid argument, e.g. wrong port_id
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* - ESP_ERR_INVALID_STATE: Specific I2S port is free already
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*/
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esp_err_t i2s_priv_deregister_object(int port_id);
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#ifdef __cplusplus
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}
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#endif
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