mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 13:09:38 +00:00
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
// DO NOT USE THESE APIS IN YOUR APPLICATIONS
|
|
// The following APIs are for internal use, public to other IDF components, but not for users' applications.
|
|
|
|
/**
|
|
* This file is used for getting the bclk and fifo sending count
|
|
* for the synchronization among different I2S ports.
|
|
*
|
|
* The APIs in this file might be called frequently, so they are made light-weight and flexible to be called
|
|
*
|
|
* NOTE: These APIs are private for ESP internal usages.
|
|
* Please be aware of the risk that APIs might be changed regarding the use case.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include "driver/i2s_types.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if SOC_I2S_SUPPORTS_TX_SYNC_CNT
|
|
|
|
/**
|
|
* @brief Get the counter number of BCLK ticks
|
|
* @note The BCLK tick count reflects the real data that have sent on line
|
|
*
|
|
* @param[in] tx_handle The I2S tx channel handle
|
|
* @return
|
|
* - BCLK tick count
|
|
*/
|
|
uint32_t i2s_sync_get_bclk_count(i2s_chan_handle_t tx_handle);
|
|
|
|
/**
|
|
* @brief Get the counter number of fifo
|
|
* @note The FIFO count reflects how many slots have processed
|
|
* Normally, fifo_cnt = slot_bit_width * bclk_cnt
|
|
* If fifo_cnt < slot_bit_width * bclk_cnt, that means some data are still stuck in the I2S controller
|
|
*
|
|
* @param[in] tx_handle The I2S tx channel handle
|
|
* @return
|
|
* - FIFO slot count
|
|
*/
|
|
uint32_t i2s_sync_get_fifo_count(i2s_chan_handle_t tx_handle);
|
|
|
|
/**
|
|
* @brief Reset the bclk counter
|
|
*
|
|
* @param[in] tx_handle The I2S tx channel handle
|
|
*/
|
|
void i2s_sync_reset_bclk_count(i2s_chan_handle_t tx_handle);
|
|
|
|
/**
|
|
* @brief Reset the fifo counter
|
|
*
|
|
* @param[in] tx_handle The I2S tx channel handle
|
|
*/
|
|
void i2s_sync_reset_fifo_count(i2s_chan_handle_t tx_handle);
|
|
|
|
#endif // SOC_I2S_SUPPORTS_TX_SYNC_CNT
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|