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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/include/driver/i2s_common.h
+2 -2
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@@ -22,8 +22,8 @@ extern "C" {
#define I2S_CHANNEL_DEFAULT_CONFIG(i2s_num, i2s_role) { \
.id = i2s_num, \
.role = i2s_role, \
.dma_desc_num = 3, \
.dma_frame_num = 500, \
.dma_desc_num = 6, \
.dma_frame_num = 250, \
.auto_clear = false, \
}
components/driver/include/driver/i2s_pdm.h
+20 -8
View File
@@ -32,6 +32,8 @@ extern "C" {
.data_bit_width = bits_per_sample, \
.slot_bit_width = I2S_SLOT_BIT_WIDTH_AUTO, \
.slot_mode = mono_or_stereo, \
.slot_mask = (mono_or_stereo == I2S_SLOT_MODE_MONO) ? \
I2S_PDM_SLOT_LEFT : I2S_PDM_SLOT_BOTH, \
}
/**
@@ -53,6 +55,8 @@ typedef struct {
i2s_data_bit_width_t data_bit_width; /*!< I2S sample data bit width (valid data bits per sample), only support 16 bits for PDM mode */
i2s_slot_bit_width_t slot_bit_width; /*!< I2S slot bit width (total bits per slot) , only support 16 bits for PDM mode */
i2s_slot_mode_t slot_mode; /*!< Set mono or stereo mode with I2S_SLOT_MODE_MONO or I2S_SLOT_MODE_STEREO */
/* Particular fields */
i2s_pdm_slot_mask_t slot_mask; /*!< Choose the slots to activate */
} i2s_pdm_rx_slot_config_t;
/**
@@ -168,16 +172,16 @@ esp_err_t i2s_channel_reconfig_pdm_rx_gpio(i2s_chan_handle_t handle, const i2s_p
.slot_mode = mono_or_stereo, \
.sd_prescale = 0, \
.sd_scale = I2S_PDM_SIG_SCALING_MUL_1, \
.hp_scale = I2S_PDM_SIG_SCALING_MUL_1, \
.hp_scale = I2S_PDM_SIG_SCALING_DIV_2, \
.lp_scale = I2S_PDM_SIG_SCALING_MUL_1, \
.sinc_scale = I2S_PDM_SIG_SCALING_MUL_1, \
.sd_en = true, \
.line_mode = I2S_PDM_TX_ONE_LINE_CODEC, \
.hp_en = true, \
.hp_cut_off_freq_hz = 49, \
.hp_cut_off_freq_hz = 35.5, \
.sd_dither = 0, \
.sd_dither2 = 0, \
.sd_dither2 = 1, \
}
#else
#else // SOC_I2S_HW_VERSION_2
/**
* @brief PDM style in 2 slots(TX)
* @param bits_per_sample i2s data bit width, only support 16 bits for PDM mode
@@ -209,7 +213,7 @@ esp_err_t i2s_channel_reconfig_pdm_rx_gpio(i2s_chan_handle_t handle, const i2s_p
.clk_src = I2S_CLK_SRC_DEFAULT, \
.mclk_multiple = I2S_MCLK_MULTIPLE_256, \
.up_sample_fp = 960, \
.up_sample_fs = ((rate) / 100), \
.up_sample_fs = 480, \
}
/*
@@ -234,7 +238,10 @@ typedef struct {
/* General fields */
i2s_data_bit_width_t data_bit_width; /*!< I2S sample data bit width (valid data bits per sample), only support 16 bits for PDM mode */
i2s_slot_bit_width_t slot_bit_width; /*!< I2S slot bit width (total bits per slot), only support 16 bits for PDM mode */
i2s_slot_mode_t slot_mode; /*!< Set mono or stereo mode with I2S_SLOT_MODE_MONO or I2S_SLOT_MODE_STEREO */
i2s_slot_mode_t slot_mode; /*!< Set mono or stereo mode with I2S_SLOT_MODE_MONO or I2S_SLOT_MODE_STEREO
* For PDM TX mode, mono means the data buffer only contains one slot data,
* Stereo means the data buffer contains two slots data
*/
/* Particular fields */
uint32_t sd_prescale; /*!< Sigma-delta filter prescale */
i2s_pdm_sig_scale_t sd_scale; /*!< Sigma-delta filter scaling value */
@@ -242,7 +249,7 @@ typedef struct {
i2s_pdm_sig_scale_t lp_scale; /*!< Low pass filter scaling value */
i2s_pdm_sig_scale_t sinc_scale; /*!< Sinc filter scaling value */
#if SOC_I2S_HW_VERSION_2
bool sd_en; /*!< Sigma-delta filter enable */
i2s_pdm_tx_line_mode_t line_mode; /*!< PDM TX line mode, on-line codec, one-line dac, two-line dac mode can be selected */
bool hp_en; /*!< High pass filter enable */
float hp_cut_off_freq_hz; /*!< High pass filter cut-off frequency, range 23.3Hz ~ 185Hz, see cut-off frequency sheet above */
uint32_t sd_dither; /*!< Sigma-delta filter dither */
@@ -269,6 +276,11 @@ typedef struct {
typedef struct {
gpio_num_t clk; /*!< PDM clk pin, output */
gpio_num_t dout; /*!< DATA pin, output */
#if SOC_I2S_HW_VERSION_2
gpio_num_t dout2; /*!< The second data pin for the DAC dual-line mode,
* only take effect when the line mode is `I2S_PDM_TX_TWO_LINE_DAC`
*/
#endif
struct {
uint32_t clk_inv: 1; /*!< Set 1 to invert the clk output */
} invert_flags; /*!< GPIO pin invert flags */
components/driver/include/driver/i2s_types.h
+1
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@@ -47,6 +47,7 @@ typedef enum {
I2S_MCLK_MULTIPLE_128 = 128, /*!< mclk = sample_rate * 128 */
I2S_MCLK_MULTIPLE_256 = 256, /*!< mclk = sample_rate * 256 */
I2S_MCLK_MULTIPLE_384 = 384, /*!< mclk = sample_rate * 384 */
I2S_MCLK_MULTIPLE_512 = 512, /*!< mclk = sample_rate * 512 */
} i2s_mclk_multiple_t;
/**