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feat(i2s): support to select PDM data format

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This commit is contained in:
laokaiyao
2024-08-15 19:02:42 +08:00
parent 390745c999
commit 9b779d8b3c
37 changed files with 863 additions and 254 deletions
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components/driver/deprecated/i2s_legacy.c
+26 -2
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@@ -1259,7 +1259,9 @@ esp_err_t i2s_set_pdm_rx_down_sample(i2s_port_t i2s_num, i2s_pdm_dsr_t downsampl
xSemaphoreTake(p_i2s[i2s_num]->rx->mux, portMAX_DELAY);
i2s_stop(i2s_num);
p_i2s[i2s_num]->clk_cfg.dn_sample_mode = downsample;
#if SOC_I2S_SUPPORTS_PDM2PCM
i2s_ll_rx_set_pdm_dsr(p_i2s[i2s_num]->hal.dev, downsample);
#endif
i2s_start(i2s_num);
xSemaphoreGive(p_i2s[i2s_num]->rx->mux);
return i2s_set_clk(i2s_num, p_i2s[i2s_num]->clk_cfg.sample_rate_hz, p_i2s[i2s_num]->slot_cfg.data_bit_width, p_i2s[i2s_num]->slot_cfg.slot_mode);
@@ -1276,8 +1278,10 @@ esp_err_t i2s_set_pdm_tx_up_sample(i2s_port_t i2s_num, const i2s_pdm_tx_upsample
i2s_stop(i2s_num);
p_i2s[i2s_num]->clk_cfg.up_sample_fp = upsample_cfg->fp;
p_i2s[i2s_num]->clk_cfg.up_sample_fs = upsample_cfg->fs;
#if SOC_I2S_SUPPORTS_PCM2PDM
i2s_ll_tx_set_pdm_fpfs(p_i2s[i2s_num]->hal.dev, upsample_cfg->fp, upsample_cfg->fs);
i2s_ll_tx_set_pdm_over_sample_ratio(p_i2s[i2s_num]->hal.dev, upsample_cfg->fp / upsample_cfg->fs);
#endif
i2s_start(i2s_num);
xSemaphoreGive(p_i2s[i2s_num]->tx->mux);
return i2s_set_clk(i2s_num, p_i2s[i2s_num]->clk_cfg.sample_rate_hz, p_i2s[i2s_num]->slot_cfg.data_bit_width, p_i2s[i2s_num]->slot_cfg.slot_mode);
@@ -1393,6 +1397,11 @@ static esp_err_t i2s_config_transfer(i2s_port_t i2s_num, const i2s_config_t *i2s
#if SOC_I2S_SUPPORTS_PDM_TX
if (p_i2s[i2s_num]->mode == I2S_COMM_MODE_PDM) {
/* Generate PDM TX slot configuration */
#if SOC_I2S_SUPPORTS_PCM2PDM
SLOT_CFG(pdm_tx).data_fmt = I2S_PDM_DATA_FMT_PCM;
#else
SLOT_CFG(pdm_tx).data_fmt = I2S_PDM_DATA_FMT_RAW;
#endif
SLOT_CFG(pdm_tx).sd_prescale = 0;
SLOT_CFG(pdm_tx).sd_scale = I2S_PDM_SIG_SCALING_MUL_1;
SLOT_CFG(pdm_tx).hp_scale = I2S_PDM_SIG_SCALING_MUL_1;
@@ -1417,6 +1426,11 @@ static esp_err_t i2s_config_transfer(i2s_port_t i2s_num, const i2s_config_t *i2s
#if SOC_I2S_SUPPORTS_PDM_RX
if (p_i2s[i2s_num]->mode == I2S_COMM_MODE_PDM) {
#if SOC_I2S_SUPPORTS_PDM2PCM
SLOT_CFG(pdm_rx).data_fmt = I2S_PDM_DATA_FMT_PCM;
#else
SLOT_CFG(pdm_rx).data_fmt = I2S_PDM_DATA_FMT_RAW;
#endif
/* Generate PDM RX clock configuration */
CLK_CFG().dn_sample_mode = I2S_PDM_DSR_8S;
p_i2s[i2s_num]->active_slot = (int)p_i2s[i2s_num]->slot_cfg.slot_mode == I2S_SLOT_MODE_MONO ? 1 : 2;
@@ -1501,12 +1515,22 @@ static esp_err_t i2s_init_legacy(i2s_port_t i2s_num, int intr_alloc_flag)
else if (p_i2s[i2s_num]->mode == I2S_COMM_MODE_PDM) {
#if SOC_I2S_SUPPORTS_PDM_TX
if (p_i2s[i2s_num]->dir & I2S_DIR_TX) {
i2s_hal_pdm_enable_tx_channel(&(p_i2s[i2s_num]->hal));
#if SOC_I2S_SUPPORTS_PCM2PDM
i2s_hal_pdm_enable_tx_channel(&(p_i2s[i2s_num]->hal), true);
#else
ESP_LOGW(TAG, "CAUTION! This target has no PCM2PDM filter, please write raw PDM data");
i2s_hal_pdm_enable_tx_channel(&(p_i2s[i2s_num]->hal), false);
#endif // SOC_I2S_SUPPORTS_PCM2PDM
}
#endif
#if SOC_I2S_SUPPORTS_PDM_RX
if (p_i2s[i2s_num]->dir & I2S_DIR_RX) {
i2s_hal_pdm_enable_rx_channel(&(p_i2s[i2s_num]->hal));
#if SOC_I2S_SUPPORTS_PDM2PCM
i2s_hal_pdm_enable_rx_channel(&(p_i2s[i2s_num]->hal), true);
#else
ESP_LOGW(TAG, "CAUTION! This target has no PDM2PCM filter, the data read are in raw PDM format");
i2s_hal_pdm_enable_rx_channel(&(p_i2s[i2s_num]->hal), false);
#endif // SOC_I2S_SUPPORTS_PDM2PCM
}
#endif
}