APPENDIX – Control Commands#
There are a number of control commands available for use with the XVF3800. These are detailed using the --list-commands option of the Host Application, but may also be found below for reference.
Note that all parameters in this appendix will be reset to their default values on a device reset.
AEC Tuning and Control Commands#
These commands focus on tuning parameters for the AEC and postprocessing tasks.
Command name |
Read / Write |
Params |
Param format |
Description |
|---|---|---|---|---|
SHF_BYPASS |
READ / WRITE |
1 |
uint8 |
AEC bypass |
AEC_NUM_MICS |
READ ONLY |
1 |
int32 |
Number of microphone inputs into the AEC |
AEC_NUM_FARENDS |
READ ONLY |
1 |
int32 |
Number of farend inputs into the AEC |
AEC_MIC_ARRAY_TYPE |
READ ONLY |
1 |
int32 |
Microphone array type (1 - linear, 2 - squarecular) |
AEC_MIC_ARRAY_GEO |
READ ONLY |
12 |
float |
Microphone array geometry. Each microphone is represented by 3 XYZ coordinates in m. |
AEC_AZIMUTH_VALUES |
READ ONLY |
4 |
radians |
Azimuth values in radians - beam 1, beam 2, free-running beam, 3 - auto-select beam |
AEC_CURRENT_IDLE_TIME |
READ ONLY |
1 |
uint32 |
AEC processing current idle time in 10ns ticks |
AEC_MIN_IDLE_TIME |
READ ONLY |
1 |
uint32 |
AEC processing minimum idle time in 10ns ticks |
AEC_RESET_MIN_IDLE_TI ME |
WRITE ONLY |
1 |
uint32 |
Reset the AEC minimum idle time. The value of the argument passed is ignored. |
AEC_SPENERGY_VALUES |
READ ONLY |
4 |
float |
Speech energy level values for each beam. Any value above 0 indicates speech. Higher values indicates louder or closer speech, however noise, echo and reverb can cause the energy level to decrease. 0 - beam 1, 1 - beam 2, 2 - free-running beam, 3 - auto-select beam |
AEC_FILTER_CMD_ABORT |
WRITE ONLY |
1 |
int32 |
Reset the special command state machine. Used for safely exiting from an AEC filter read/write command sequence that has gone wrong. |
AEC_AECPATHCHANGE |
READ ONLY |
1 |
int32 |
AEC Path Change Detection. Valid range: 0,1 (false,true) |
AEC_HPFONOFF |
READ / WRITE |
1 |
int32 |
High-pass Filter on microphone signals. Valid range: 0,1,2,3,4 (0:Off, 1:on70, 2:on125, 3:on150, 4:on180). Default value(s): on125 |
AEC_AECSILENCELEVEL |
READ / WRITE |
2 |
float |
Power threshold for signal detection in adaptive filter.(set,cur), Valid range (set): [0.0 .. 1.0] Valid range (cur): 0.05*set, 1e-6f or set.. Default value(s): 1e-8f |
AEC_AECCONVERGED |
READ ONLY |
1 |
int32 |
Flag indicating whether AEC is converged. Valid range: 0,1 (false,true). Default value(s): False |
AEC_AECEMPHASISONOFF |
READ / WRITE |
1 |
int32 |
Pre-emphasis and de-emphasis filtering for AEC. Valid range: 0,1,2 (off,on,on_eq)on: Emphasis filter for speech signals without modification of far-end ref. on_eq: Emphasis filter for far-end reference signals where the low frequencies are boosted by e.g. an equalizer.. Default value(s): False |
AEC_FAR_EXTGAIN |
READ / WRITE |
1 |
float |
External gain in dB applied to the far-end reference signals. Valid range: [-inf .. inf]. Default value(s): 0.0dB |
AEC_PCD_COUPLINGI |
READ / WRITE |
1 |
float |
Sensitivity parameter for PCD. Valid range: [0.0 .. 1.0]PCD can be disabled by setting a value outside the range. Default value(s): disabled |
AEC_PCD_MINTHR |
READ / WRITE |
1 |
float |
Minimum threshold value used in PCD. Valid range: [0.0 .. 0.02]. Default value(s): 0.005 |
AEC_PCD_MAXTHR |
READ / WRITE |
1 |
float |
Maximum threshold value used in PCD. Valid range: [0.025 .. 0.2]. Default value(s): 0.1 |
AEC_RT60 |
READ ONLY |
1 |
float |
Current RT60 estimate. Valid range: [0.250 .. 0.900] (seconds) A negative value indicates that the RT60 estimation is invalid. |
Command name |
Read / Write |
Params |
Param format |
Description |
|---|---|---|---|---|
PP_CURRENT_IDLE_TIME |
READ ONLY |
1 |
uint32 |
PP processing current idle time in 10ns ticks |
PP_MIN_IDLE_TIME |
READ ONLY |
1 |
uint32 |
PP processing minimum idle time in 10ns ticks |
PP_RESET_MIN_IDLE_TIM E |
WRITE ONLY |
1 |
uint32 |
Reset the PP minimum idle time. The value of the argument passed is ignored. |
PP_NL_MODEL_CMD_ABORT |
WRITE ONLY |
1 |
int32 |
Reset the special command state machine. Used for safely exiting from a NL model read/write sequence that has gone wrong. |
PP_AGCONOFF |
READ / WRITE |
1 |
int32 |
Automatic Gain Control. Valid range: 0,1 (off,on). Default value(s): True |
PP_AGCMAXGAIN |
READ / WRITE |
1 |
float |
Maximum AGC gain factor. Valid range: [1.0 .. 1000.0] (linear gain factor). Default value(s): 200.0 |
PP_AGCDESIREDLEVEL |
READ / WRITE |
1 |
float |
Target power level of the output signal. Valid range: [1e-8 .. 1.0] (power level). Default value(s): 0.007 |
PP_AGCGAIN |
READ / WRITE |
1 |
float |
Current AGC gain factor. Valid range: [1.0 .. 1000.0] (linear gain factor). Default value(s): 66.0 |
PP_AGCTIME |
READ / WRITE |
1 |
float |
Ramp-up/down time-constant. Valid range: [0.5 .. 4.0] (seconds). Default value(s): 0.9 |
PP_AGCFASTTIME |
READ / WRITE |
1 |
float |
Ramp down time-constant in case of peaks. Valid range: [0.05 .. 4.0] (seconds). Default value(s): 0.1f |
PP_AGCALPHAFASTGAIN |
READ / WRITE |
1 |
float |
Gain threshold enabling fast alpha mode. Valid range: [0.0 .. 1000.0] (linear gain factor). Default value(s): 0.0 |
PP_AGCALPHASLOW |
READ / WRITE |
1 |
float |
Slow memory parameter for speech power. Valid range [0.0 .. 1.0]. Default value(s): 0.984 |
PP_AGCALPHAFAST |
READ / WRITE |
1 |
float |
Fast memory parameter for speech power. Valid range [0.0 .. 1.0]. Default value(s): 0.36 |
PP_LIMITONOFF |
READ / WRITE |
1 |
int32 |
Limiter on communication output. Valid range: 0,1 (off,on). Default value(s): True |
PP_LIMITPLIMIT |
READ / WRITE |
1 |
float |
Maximum limiter power. Valid range: [1e-8 .. 1.0] (power level). Default value(s): 0.47 |
PP_MIN_NS |
READ / WRITE |
1 |
float |
Gain-floor for stationary noise suppression. Valid range: [0.0 .. 1.0]. Default value(s): 0.15 |
PP_MIN_NN |
READ / WRITE |
1 |
float |
Gain-floor for non-stationary noise suppression. Valid range: [0.0 .. 1.0]. Default value(s): 0.51 |
PP_ECHOONOFF |
READ / WRITE |
1 |
int32 |
Echo suppression. Valid range: 0,1 (off,on). Default value(s): True |
PP_GAMMA_E |
READ / WRITE |
1 |
float |
Over-subtraction factor of echo (direct and early components). Valid range: [0.0 .. 2.0]. Default value(s): 1.0 |
PP_GAMMA_ETAIL |
READ / WRITE |
1 |
float |
Over-subtraction factor of echo (tail components). Valid range: [0.0 .. 2.0]. Default value(s): 1.0 |
PP_GAMMA_ENL |
READ / WRITE |
1 |
float |
Over-subtraction factor of non-linear echo. Valid range: [0.0 .. 5.0]. Default value(s): 1.1 |
PP_NLATTENONOFF |
READ / WRITE |
1 |
int32 |
Non-Linear echo attenuation. Valid range: 0,1 (off,on). Default value(s): 1 |
PP_NLAEC_MODE |
READ / WRITE |
1 |
int32 |
Non-Linear AEC training mode. Valid range: 0,1,2 (normal,train,train2). Default value(s): 0 |
PP_MGSCALE |
READ / WRITE |
3 |
float |
Minimum gain scale for acoustic echo suppression.(max,min,cur), Valid range (max,min): [(1.0,0.0) .. (1e5,max)] Valid range (cur): min or max.. Default value(s): (1000.0,1.0) |
PP_FMIN_SPEINDEX |
READ / WRITE |
1 |
float |
In case of double talk, frequencies below SPEINDEX are more suppressed than frequencies above SPEINDEX. The actual suppression is depending on the setting of DTSENSITIVE. The parameter is not a taste parameter but needs to be tuned for a specific device. Valid range: [0.0 .. 7999.0]. Default value(s): 593.75 |
PP_DTSENSITIVE |
READ / WRITE |
1 |
int32 |
Tradeoff between echo suppression and doubletalk performance. A lower value prefers high echo suppression (possibly at the cost of less doubletalk performance), a higher value prefers better doubletalk performance (possibly at the cost of good echo suppression). Good doubletalk performance is only possible for hardware without much non-linearities. When the value has 2 digits, for robustness an extra near-end speech detector is used. Valid range: [0 .. 5, 10 .. 15]. Default value(s): 0 |
PP_ATTNS_MODE |
READ / WRITE |
1 |
int32 |
Additional reduction of AGC gain during non-speech. Valid range: 0,1,2 (off, on, on with modified beamselection off). Default value(s): 1 |
PP_ATTNS_NOMINAL |
READ / WRITE |
1 |
float |
Amount of additional reduction during non-speech at nominal speech level. Valid range: [0.0 .. 1.0]. Default value(s): 1.0 |
PP_ATTNS_SLOPE |
READ / WRITE |
1 |
float |
Determines the extra amount of suppression during non-speech when the AGC level increases at lower speech level. The extra attenuation is given by (agcgain_nominal/agcgain_current)^attns_slope. With a value of 1.0 the amount of noise in the output remains approximately the same, independent of the agc gain. Valid range: [0.0 .. 5.0]. Default value(s): 1.0 |
Device Metadata Commands#
These commands focus on querying the device’s metadata, e.g. software version, boot status, and build information.
Command name |
Read / Write |
Params |
Param format |
Description |
|---|---|---|---|---|
VERSION |
READ ONLY |
3 |
uint8 |
The version number of the firmware. The format is VERSION_MAJOR VERSION_MINOR VERSION_PATCH |
BLD_MSG |
READ ONLY |
50 |
char |
Retrieve the build message built in to the firmware, normally the build configuration name |
BLD_HOST |
READ ONLY |
30 |
char |
Retrieve details of the CI build host used to build the firmware |
BLD_REPO_HASH |
READ ONLY |
40 |
char |
Retrieve the GIT hash of the sw_xvf3800 repo used to build the firmware |
BLD_MODIFIED |
READ ONLY |
6 |
char |
Show whether or not the current firmware repo has been modified from the official release. Requires use of a GIT repo |
BOOT_STATUS |
READ ONLY |
3 |
char |
Shows whether or not the firmware has been booted via SPI or JTAG/FLASH |
TEST_CORE_BURN |
READ / WRITE |
1 |
uint8 |
Set to enable core burn to exercise worst case timing. This will reboot the chip, reset all parameters to default and significantly increase power consumption. |
USB_BIT_DEPTH |
READ / WRITE |
2 |
uint8 |
Only relevant for the UA device variant. For the UA device, set or get the USB bit depth IN, OUT to either 16, 24 or 32. Setting will reboot the chip, resetting all other parameters to default. If issued to the INT device, a set is ignored and the device is not rebooted while a get always returns 0 as both IN and OUT bit depths.. Valid range: val0: [16 .. 16] val0: [24 .. 24] val0: [32 .. 32] val1: [16 .. 16] val1: [24 .. 24] val1: [32 .. 32] |
Audio Manager Commands#
These commands are targeted toward setting and retrieving various options around the audio path into and out of the device, including setting I2S loopback modes and debug “packed” IO modes. Includes diagnostic data on idle times for both the audio manager core and the I2S core.
Note
For an example on the use of “packed” IO, see the Signal Capture section of the Programming Guide.
For more information on options for setting AUDIO_MGR_OP_*, see the Output Selection section of this document.
Command name |
Read / Write |
Params |
Param format |
Description |
|---|---|---|---|---|
AUDIO_MGR_MIC_GAIN |
READ / WRITE |
1 |
float |
Audio Mgr pre SHF microphone gain. Default value(s): 6.5 |
AUDIO_MGR_REF_GAIN |
READ / WRITE |
1 |
float |
Audio Mgr pre SHF reference gain. Default value(s): 1.5 |
AUDIO_MGR_CURRENT_IDL E_TIME |
READ ONLY |
1 |
int32 |
Get audio manager current idle time in 10ns ticks |
AUDIO_MGR_MIN_IDLE_TI ME |
READ ONLY |
1 |
int32 |
Get audio manager min idle time in 10ns ticks |
AUDIO_MGR_RESET_MIN_I DLE_TIME |
WRITE ONLY |
1 |
int32 |
Rest audio manager min idle time. The value of the argument passed is ignored. |
MAX_CONTROL_TIME |
READ ONLY |
1 |
int32 |
Get audio manager max control time |
RESET_MAX_CONTROL_TIM E |
WRITE ONLY |
1 |
int32 |
Reset audio manager max control time. The value of the argument passed is ignored. |
I2S_CURRENT_IDLE_TIME |
READ ONLY |
1 |
int32 |
Get I2S current idle time in 10ns ticks |
I2S_MIN_IDLE_TIME |
READ ONLY |
1 |
int32 |
Get I2S min idle time in 10ns ticks |
I2S_RESET_MIN_IDLE_TI ME |
WRITE ONLY |
1 |
int32 |
I2S reset idle time. The value of the argument passed is ignored. |
I2S_INPUT_PACKED |
READ / WRITE |
1 |
uint8 |
Will expect packed input on both I2S or USB channels if this is not 0. Note, could take up to 3 samples to take effect.. Valid range: val0: [0 .. 1]. Default value(s): 0 |
AUDIO_MGR_SELECTED_AZ IMUTHS |
READ ONLY |
2 |
radians |
This returns the azimuths determined by the beam_selection function in post_shf_dsp.c. The default implementation will provide a processed DoA at index 0 and the DoA of the auto select beam at index 1. The processed DoA uses speech energy to select from the DoA on each fixed beam to provide the direction of a speaker. NAN will be returned if neither of the fixed beams contain speech. Versions 2.0.0 and earlier of XVF3800 had a different default implementation of beam_selection which returned the DoA associated with the AUDIO_MGR_SELECTED_CHANNELS |
AUDIO_MGR_SELECTED_CH ANNELS |
READ / WRITE |
2 |
uint8 |
Default implementation of post processing will use this to select which channels should be output to MUX_USER_CHOSEN_CHANNELS. Note that a customer implementation of the beam selection stage could override this command. How this channel selection aligns with actual output depends on the mux configuration. Valid range: val0: [0 .. 3] val1: [0 .. 3]. Default value(s): (3, 3) |
AUDIO_MGR_OP_PACKED |
READ / WRITE |
2 |
uint8 |
<L>, <R>; Sets/gets packing status for L and R output channels. Valid range: val0: [0 .. 1] val1: [0 .. 1]. Default value(s): (0, 0) |
AUDIO_MGR_OP_UPSAMPLE |
READ / WRITE |
2 |
uint8 |
<L>, <R>; Sets/gets upsample status for L and R output channels, where appropriate. Valid range: val0: [0 .. 1] val1: [0 .. 1] |
AUDIO_MGR_OP_L |
READ / WRITE |
2 |
uint8 |
<category>, <source>; Sets category and source for L output channel. Equivalent to AUDIO_MGR_OP_L_PK0. Valid range: val0: [0 .. 12] val1: [0 .. 5]. Default value(s): (8, 0) |
AUDIO_MGR_OP_L_PK0 |
READ / WRITE |
2 |
uint8 |
<category>, <source>; Sets category and source for first (of three) sources on the L channel in packed mode. Equivalent to AUDIO_MGR_OP_L. Valid range: val0: [0 .. 12] val1: [0 .. 5] |
AUDIO_MGR_OP_L_PK1 |
READ / WRITE |
2 |
uint8 |
Sets category and source for second (of three) sources on the L channel in packed mode. Valid range: val0: [0 .. 12] val1: [0 .. 5]. Default value(s): (1, 0) |
AUDIO_MGR_OP_L_PK2 |
READ / WRITE |
2 |
uint8 |
Sets category and source for third (of three) sources on the L channel in packed mode. Valid range: val0: [0 .. 12] val1: [0 .. 5]. Default value(s): (1, 2) |
AUDIO_MGR_OP_R |
READ / WRITE |
2 |
uint8 |
<category>, <source>; Sets category and source for R output channel. Equivalent to AUDIO_MGR_OP_R_PK0. Valid range: val0: [0 .. 12] val1: [0 .. 5]. Default value(s): (0, 0) |
AUDIO_MGR_OP_R_PK0 |
READ / WRITE |
2 |
uint8 |
<category>, <source>; Sets category and source for first (of three) sources on the R channel in packed mode. Equivalent to AUDIO_MGR_OP_R. Valid range: val0: [0 .. 12] val1: [0 .. 5] |
AUDIO_MGR_OP_R_PK1 |
READ / WRITE |
2 |
uint8 |
Sets category and source for second (of three) sources on the R channel in packed mode. Valid range: val0: [0 .. 12] val1: [0 .. 5]. Default value(s): (1, 1) |
AUDIO_MGR_OP_R_PK2 |
READ / WRITE |
2 |
uint8 |
Sets category and source for third (of three) sources on the R channel in packed mode. Valid range: val0: [0 .. 12] val1: [0 .. 5]. Default value(s): (1, 3) |
AUDIO_MGR_OP_ALL |
READ / WRITE |
12 |
uint8 |
Sets category and source for all 3 sources on L channel and all 3 sources for R channel. Equivalent to AUDIO_MGR_OP_[L,R]_PK[0,1,2] with successive pairs of arguments. Valid range: val0: [0 .. 12] val1: [0 .. 5] val2: [0 .. 12] val3: [0 .. 5] val4: [0 .. 12] val5: [0 .. 5] val6: [0 .. 12] val7: [0 .. 5] val8: [0 .. 12] val9: [0 .. 5] val10: [0 .. 12] val11: [0 .. 5] |
I2S_INACTIVE |
READ ONLY |
1 |
uint8 |
Returns whether the main audio loop is exchanging samples with I2S (0). If not (1), I2S is inactive |
AUDIO_MGR_FAR_END_DSP _ENABLE |
READ / WRITE |
1 |
uint8 |
Enables/disables far-end DSP (if implemented). Write a 1 to enable, 0 to disable. Valid range: val0: [0 .. 1]. Default value(s): 0 |
AUDIO_MGR_SYS_DELAY |
READ / WRITE |
1 |
int32 |
Delay, measured in samples, that is applied to the reference signal before passing to SHF algorithm. Valid range: val0: [-64 .. 256]. Default value(s): -32 |
GPIO Commands#
These commands set up and manipulate various functions of the device’s GPO and GPI services.
Command name |
Read / Write |
Params |
Param format |
Description |
|---|---|---|---|---|
GPI_INDEX |
READ / WRITE |
1 |
uint8 |
Set/get pin index for next and subsequent GPI reads. Maximum value should be equal to GPIO_NUM_INPUT_PINS. Valid range: val0: [0 .. 1] |
GPI_EVENT_CONFIG |
READ / WRITE |
1 |
uint8 |
Set/get event config for selected pin. Valid range: val0: [0 .. 3] |
GPI_ACTIVE_LEVEL |
READ / WRITE |
1 |
uint8 |
Set/get active level for selected pin |
GPI_VALUE |
READ ONLY |
1 |
uint8 |
Get current logic level of selected GPI pin. |
GPI_EVENT_PENDING |
READ ONLY |
1 |
uint8 |
Get whether event was triggered for selected GPI pin. Event flag is cleared for the pin. Interrupt pin is set when all event flags are cleared |
GPI_VALUE_ALL |
READ ONLY |
1 |
uint32 |
Get current logic level of all GPI pins as a bitmap, where GPI index n -> bit n of returned value. |
GPI_EVENT_PENDING_ALL |
READ ONLY |
1 |
uint32 |
Get whether event was triggered for all GPI pins as a bitmap, where GPI index n -> bit n of returned value. Event flag is cleared for all GPI pins. Interrupt pin is set. |
GPO_PORT_PIN_INDEX |
READ / WRITE |
2 |
uint32 |
GPO port index and pin index that the following commands would be directed to. Valid range: val0: [0 .. 0] val1: [3 .. 7] |
GPO_PIN_VAL |
WRITE ONLY |
3 |
uint8 |
value to write to one pin of a GPO port. Payload specifies port_index, pin_index and value to write to the pin. Valid range: val0: [0 .. 0] val1: [3 .. 7] val2: [0 .. 1] |
GPO_PIN_ACTIVE_LEVEL |
READ / WRITE |
1 |
uint32 |
Active level of the port/pin specified by the GPO_PORT_PIN_INDEX command. 1 = ACTIVE_HIGH, 0 = ACTIVE_LOW. Valid range: val0: [0 .. 1] |
GPO_PIN_PWM_DUTY |
READ / WRITE |
1 |
uint8 |
PWM duty cycle of the pin specified by the GPO_PORT_PIN_INDEX command. Specified as an integer percentage between 0 and 100. Valid range: val0: [0 .. 100] |
GPO_PIN_FLASH_MASK |
READ / WRITE |
1 |
uint32 |
Serial flash mask for the pin specified by the GPO_PORT_PIN_INDEX command. Each bit in the mask specifies the GPO pin state for a 100 ms time period interval |