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i2s_hal_slot_config_t struct
General slot configuration information
Syntax
typedef struct
{
i2s_data_bit_width_t data_bit_width;
i2s_slot_bit_width_t slot_bit_width;
i2s_slot_mode_t slot_mode;
union {
struct {
i2s_std_slot_mask_t slot_mask;
uint32_t ws_width;
bool ws_pol;
bool bit_shift;
#if SOC_I2S_HW_VERSION_1
bool msb_right;
#else
bool left_align;
bool big_endian;
bool bit_order_lsb;
#endif
} std;
#if SOC_I2S_SUPPORTS_TDM
struct {
i2s_tdm_slot_mask_t slot_mask;
uint32_t ws_width;
bool ws_pol;
bool bit_shift;
bool left_align;
bool big_endian;
bool bit_order_lsb;
bool skip_mask;
uint32_t total_slot;
} tdm;
#endif
#if SOC_I2S_SUPPORTS_PDM_TX
struct {
#if SOC_I2S_HW_VERSION_1
i2s_pdm_slot_mask_t slot_mask;
#endif
uint32_t sd_prescale;
i2s_pdm_sig_scale_t sd_scale;
i2s_pdm_sig_scale_t hp_scale;
i2s_pdm_sig_scale_t lp_scale;
i2s_pdm_sig_scale_t sinc_scale;
#if SOC_I2S_HW_VERSION_2
i2s_pdm_tx_line_mode_t line_mode;
bool hp_en;
uint32_t hp_cut_off_freq_hzx10;
uint32_t sd_dither;
uint32_t sd_dither2;
#endif
} pdm_tx;
#endif
#if SOC_I2S_SUPPORTS_PDM_RX
struct {
i2s_pdm_slot_mask_t slot_mask;
#if SOC_I2S_SUPPORTS_PDM_RX_HP_FILTER
bool hp_en;
uint32_t hp_cut_off_freq_hzx10;
uint32_t amplify_num;
#endif
} pdm_rx;
#endif
};
} i2s_hal_slot_config_t;
Fields
Field
Declared as
Description
I2S sample data bit width (valid data bits per sample).
Set mono or stereo mode with I2S_SLOT_MODE_MONO or I2S_SLOT_MODE_STEREO.
Related Functions
Found 4 other functions taking a i2s_hal_slot_config_t
argument:
Function
Description
Set tx slot to standard mode
Set rx slot to standard mode
Set tx slot to pdm mode
Set rx slot to pdm mode