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i2s: add basic examples for STD/TDM/PDM mode

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This commit is contained in:
laokaiyao
2022-06-20 20:30:31 +08:00
parent 92b4e134bb
commit 90866e99fb
64 changed files with 1616 additions and 409 deletions
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components/driver/i2s/i2s_pdm.c
+10 -1
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@@ -67,6 +67,8 @@ static esp_err_t i2s_pdm_tx_set_clock(i2s_chan_handle_t handle, const i2s_pdm_tx
portENTER_CRITICAL(&g_i2s.spinlock);
/* Set clock configurations in HAL*/
i2s_hal_set_tx_clock(&handle->controller->hal, &clk_info, clk_cfg->clk_src);
/* Work aroud for PDM TX clock, set the raw division directly to reduce the noise */
i2s_ll_tx_set_raw_clk_div(handle->controller->hal.dev, 1, 1, 0, 0);
portEXIT_CRITICAL(&g_i2s.spinlock);
/* Update the mode info: clock configuration */
@@ -114,8 +116,14 @@ static esp_err_t i2s_pdm_tx_set_gpio(i2s_chan_handle_t handle, const i2s_pdm_tx_
ESP_ERR_INVALID_ARG, TAG, "clk gpio is invalid");
ESP_RETURN_ON_FALSE((gpio_cfg->dout == -1 || GPIO_IS_VALID_GPIO(gpio_cfg->dout)),
ESP_ERR_INVALID_ARG, TAG, "dout gpio is invalid");
i2s_pdm_tx_config_t *pdm_tx_cfg = (i2s_pdm_tx_config_t *)handle->mode_info;
/* Set data output GPIO */
i2s_gpio_check_and_set(gpio_cfg->dout, i2s_periph_signal[id].data_out_sig, false, false);
#if SOC_I2S_HW_VERSION_2
if (pdm_tx_cfg->slot_cfg.line_mode == I2S_PDM_TX_TWO_LINE_DAC) {
i2s_gpio_check_and_set(gpio_cfg->dout2, i2s_periph_signal[id].data_out1_sig, false, false);
}
#endif
if (handle->role == I2S_ROLE_SLAVE) {
/* For "tx + slave" mode, select TX signal index for ws and bck */
@@ -132,7 +140,6 @@ static esp_err_t i2s_pdm_tx_set_gpio(i2s_chan_handle_t handle, const i2s_pdm_tx_
i2s_ll_mclk_bind_to_tx_clk(handle->controller->hal.dev);
#endif
/* Update the mode info: gpio configuration */
i2s_pdm_tx_config_t *pdm_tx_cfg = (i2s_pdm_tx_config_t *)handle->mode_info;
memcpy(&(pdm_tx_cfg->gpio_cfg), gpio_cfg, sizeof(i2s_pdm_tx_gpio_config_t));
return ESP_OK;
@@ -189,6 +196,7 @@ esp_err_t i2s_channel_init_pdm_tx_mode(i2s_chan_handle_t handle, const i2s_pdm_t
/* Initialization finished, mark state as ready */
handle->state = I2S_CHAN_STATE_READY;
xSemaphoreGive(handle->mutex);
ESP_LOGD(TAG, "The tx channel on I2S0 has been initialized to PDM TX mode successfully");
return ret;
err:
@@ -460,6 +468,7 @@ esp_err_t i2s_channel_init_pdm_rx_mode(i2s_chan_handle_t handle, const i2s_pdm_r
/* Initialization finished, mark state as ready */
handle->state = I2S_CHAN_STATE_READY;
xSemaphoreGive(handle->mutex);
ESP_LOGD(TAG, "The rx channel on I2S0 has been initialized to PDM RX mode successfully");
return ret;
err: