alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-08-31 22:24:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix(i2s): fix i2s half sample rate issue

Browse Source
This commit is contained in:
laokaiyao
2024-09-26 15:38:25 +08:00
committed by Kevin (Lao Kaiyao)
parent 263a3ed82d
commit eedf7b24ec
6 changed files with 141 additions and 143 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
components/hal/esp32/include/hal/i2s_ll.h
View File

@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -81,7 +81,7 @@ static inline void i2s_ll_dma_enable_auto_write_back(i2s_dev_t *hw, bool en)
}
/**
* @brief I2S DMA generate EOF event on data in FIFO poped out
* @brief I2S DMA generate EOF event on data in FIFO popped out
*
* @param hw Peripheral I2S hardware instance address.
* @param en True to enable, False to disable
@@ -314,11 +314,6 @@ static inline void i2s_ll_set_raw_mclk_div(i2s_dev_t *hw, uint32_t mclk_div, uin
*/
static inline void i2s_ll_tx_set_mclk(i2s_dev_t *hw, const i2s_ll_mclk_div_t *mclk_div)
{
/* Workaround for inaccurate clock while switching from a relatively low sample rate to a high sample rate
* Set to particular coefficients first then update to the target coefficients,
* otherwise the clock division might be inaccurate.
* the general idea is to set a value that unlike to calculate from the regular decimal */
i2s_ll_set_raw_mclk_div(hw, 7, 47, 3);
i2s_ll_set_raw_mclk_div(hw, mclk_div->integ, mclk_div->denom, mclk_div->numer);
}
@@ -623,7 +618,7 @@ static inline void i2s_ll_tx_set_bits_mod(i2s_dev_t *hw, uint32_t val)
}
/**
* @brief Congfigure TX chan bit and audio data bit, on ESP32, sample_bit should equals to data_bit
* @brief Configure TX chan bit and audio data bit, on ESP32, sample_bit should equals to data_bit
*
* @param hw Peripheral I2S hardware instance address.
* @param chan_bit The chan bit width
@@ -636,7 +631,7 @@ static inline void i2s_ll_tx_set_sample_bit(i2s_dev_t *hw, uint8_t chan_bit, int
}
/**
* @brief Congfigure RX chan bit and audio data bit, on ESP32, sample_bit should equals to data_bit
* @brief Configure RX chan bit and audio data bit, on ESP32, sample_bit should equals to data_bit
*
* @param hw Peripheral I2S hardware instance address.
* @param chan_bit The chan bit width