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feat(i2s): allow full duplex mode in less strict condition

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This commit is contained in:
Chen Chen
2026-07-17 14:39:22 +08:00
parent 78d6b6342e
commit ad8d821197
9 changed files with 351 additions and 90 deletions
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components/esp_driver_i2s/include/driver/i2s_std.h
+6 -3
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -299,8 +299,11 @@ typedef struct {
* @brief Initialize I2S channel to standard mode
* @note Only allowed to be called when the channel state is REGISTERED, (i.e., channel has been allocated, but not initialized)
* and the state will be updated to READY if initialization success, otherwise the state will return to REGISTERED.
* @note When initialize the STD mode with a same configuration as another channel on a same port,
* these two channels can constitude as full-duplex mode automatically
* @note When initializing the STD mode on a channel that shares the same BCLK/WS configuration and
* the same frame timing (sample rate and total bits per frame) as the other channel on the same port,
* these two channels can constitute full-duplex mode automatically. The slot layout, clock source,
* external clock frequency, and MCLK configuration may differ (e.g. an STD channel can pair with
* a TDM channel) as long as the total bits per frame are equal and the BCLK/WS frequency matches.
*
* @param[in] handle I2S channel handler
* @param[in] std_cfg Configurations for standard mode, including clock, slot and GPIO
components/esp_driver_i2s/include/driver/i2s_tdm.h
+6 -3
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -196,8 +196,11 @@ typedef struct {
* @brief Initialize I2S channel to TDM mode
* @note Only allowed to be called when the channel state is REGISTERED, (i.e., channel has been allocated, but not initialized)
* and the state will be updated to READY if initialization success, otherwise the state will return to REGISTERED.
* @note When initialize the TDM mode with a same configuration as another channel on a same port,
* these two channels can constitude as full-duplex mode automatically
* @note When initializing the TDM mode on a channel that shares the same BCLK/WS configuration and
* the same frame timing (sample rate and total bits per frame) as the other channel on the same port,
* these two channels can constitute full-duplex mode automatically. The slot layout, clock source,
* external clock frequency, and MCLK configuration may differ (e.g. a TDM channel can pair with
* an STD channel) as long as the total bits per frame are equal and the BCLK/WS frequency matches.
*
* @param[in] handle I2S channel handler
* @param[in] tdm_cfg Configurations for TDM mode, including clock, slot and GPIO