From dd1f36f0a19c488814023b160b4da672eac5e173 Mon Sep 17 00:00:00 2001 From: laokaiyao Date: Fri, 28 Mar 2025 15:23:56 +0800 Subject: [PATCH] fix(i2s): add check for the minimum sample rate Closes https://github.com/espressif/esp-idf/issues/15659 --- components/driver/i2s/i2s_pdm.c | 6 ++++-- components/driver/i2s/i2s_std.c | 3 ++- components/driver/i2s/i2s_tdm.c | 3 ++- 3 files changed, 8 insertions(+), 4 deletions(-) diff --git a/components/driver/i2s/i2s_pdm.c b/components/driver/i2s/i2s_pdm.c index 79423fd316..26b03a1279 100644 --- a/components/driver/i2s/i2s_pdm.c +++ b/components/driver/i2s/i2s_pdm.c @@ -45,7 +45,8 @@ static esp_err_t i2s_pdm_tx_calculate_clock(i2s_chan_handle_t handle, const i2s_ clk_info->mclk_div = clk_info->sclk / clk_info->mclk; /* Check if the configuration is correct. Use float for check in case the mclk division might be carried up in the fine division calculation */ - ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > 1.99, ESP_ERR_INVALID_ARG, TAG, "sample rate is too large"); + ESP_RETURN_ON_FALSE((float)clk_info->sclk > clk_info->mclk * 1.99, ESP_ERR_INVALID_ARG, TAG, "sample rate is too large"); + ESP_RETURN_ON_FALSE(clk_info->mclk_div < 256, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small"); /* Set up sampling configuration */ i2s_ll_tx_set_pdm_fpfs(handle->controller->hal.dev, pdm_tx_clk->up_sample_fp, pdm_tx_clk->up_sample_fs); i2s_ll_tx_set_pdm_over_sample_ratio(handle->controller->hal.dev, over_sample_ratio); @@ -338,7 +339,8 @@ static esp_err_t i2s_pdm_rx_calculate_clock(i2s_chan_handle_t handle, const i2s_ clk_info->mclk_div = clk_info->sclk / clk_info->mclk; /* Check if the configuration is correct. Use float for check in case the mclk division might be carried up in the fine division calculation */ - ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > 1.99, ESP_ERR_INVALID_ARG, TAG, "sample rate is too large"); + ESP_RETURN_ON_FALSE((float)clk_info->sclk > clk_info->mclk * 1.99, ESP_ERR_INVALID_ARG, TAG, "sample rate is too large"); + ESP_RETURN_ON_FALSE(clk_info->mclk_div < I2S_LL_CLK_FRAC_DIV_N_MAX, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small"); /* Set down-sampling configuration */ i2s_ll_rx_set_pdm_dsr(handle->controller->hal.dev, pdm_rx_clk->dn_sample_mode); return ESP_OK; diff --git a/components/driver/i2s/i2s_std.c b/components/driver/i2s/i2s_std.c index 7fd2f8dda3..d3468622c6 100644 --- a/components/driver/i2s/i2s_std.c +++ b/components/driver/i2s/i2s_std.c @@ -56,7 +56,8 @@ static esp_err_t i2s_std_calculate_clock(i2s_chan_handle_t handle, const i2s_std clk_info->mclk_div = clk_info->sclk / clk_info->mclk; /* Check if the configuration is correct. Use float for check in case the mclk division might be carried up in the fine division calculation */ - ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > min_mclk_div, ESP_ERR_INVALID_ARG, TAG, "sample rate or mclk_multiple is too large for the current clock source"); + ESP_RETURN_ON_FALSE((float)clk_info->sclk > clk_info->mclk * min_mclk_div, ESP_ERR_INVALID_ARG, TAG, "sample rate is too large"); + ESP_RETURN_ON_FALSE(clk_info->mclk_div < I2S_LL_CLK_FRAC_DIV_N_MAX, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small"); return ESP_OK; } diff --git a/components/driver/i2s/i2s_tdm.c b/components/driver/i2s/i2s_tdm.c index 1889c2511c..f10d7a60fe 100644 --- a/components/driver/i2s/i2s_tdm.c +++ b/components/driver/i2s/i2s_tdm.c @@ -62,7 +62,8 @@ static esp_err_t i2s_tdm_calculate_clock(i2s_chan_handle_t handle, const i2s_tdm clk_info->mclk_div = clk_info->sclk / clk_info->mclk; /* Check if the configuration is correct. Use float for check in case the mclk division might be carried up in the fine division calculation */ - ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > min_mclk_div, ESP_ERR_INVALID_ARG, TAG, "sample rate or mclk_multiple is too large for the current clock source"); + ESP_RETURN_ON_FALSE((float)clk_info->sclk > clk_info->mclk * min_mclk_div, ESP_ERR_INVALID_ARG, TAG, "sample rate is too large"); + ESP_RETURN_ON_FALSE(clk_info->mclk_div < I2S_LL_CLK_FRAC_DIV_N_MAX, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small"); return ESP_OK; }