Popoto JSON Variables

The following variables are available through the Popoto JSON API. Each entry lists the variable's data type, supported range, and access permissions.

Variable	Description	Type	Minimum	Maximum	Access
APP_CycleCount	Display cycle counter	int	0.0	0.0	Read Only
APP_CycleCountReset	Display cycle counter and reset	int	0.0	0.0	Read Only
APP_ModemSMAOut	Flag to send modem data to the SMA port out	int	0.0	1.0	Read and Write
APP_SocketBasedPCM	Flag to enable socket-based PCM	int	0.0	1.0	Read and Write
BBAND_DownCarrier	Downconvert baseband streaming carrier, 5120 to 45000	int	5120.0	45000.0	Read and Write
BBAND_OutputScale	Upconvert output scaling for baseband passband module	float	0.0	10.0	Read and Write
BBAND_UpCarrier	Upconvert baseband streaming carrier, 5120 to 45000	int	5120.0	45000.0	Read and Write
BatteryCharge	Battery charge in mAh	float	0.0	271.98999	Read and Write
BatteryCurrent	Battery current in positive (to battery; unused) or negative (from battery) mA	float	0.0	200.0	Read Only
BatteryVoltage	System battery voltage in volts	float	0.0	40.0	Read Only
Carrier	Sets both transmit and receiver carriers. Reading this variable returns the transmitter carrier.	int	20000.0	59750.0	Read and Write
CarrierTxMode	Set the transmitter to send the FH waveform (0, default) or a carrier note (1)	int	0.0	1.0	Read and Write
ChannelIR	Measured channel impulse response; getter returns number of expected values	int	0.0	0.0	Read Only
ConsolePacketBytes	Number of console characters input to trigger an autosend	int	0.0	8192.0	Read and Write
ConsoleTimeoutMS	Number of console milliseconds elapsed to trigger an autosend	int	0.0	60000.0	Read and Write
DOWNCONVERT_Carrier	Downconverter carrier frequency in Hz	int	20000.0	59750.0	Read and Write
DataPortMode	Data port acts as Telnet (0) or raw TCP data (1)	int	0.0	1.0	Read and Write
DepartureDelay_samples	Transmit departure delay	int	0.0	3072000.0	Read and Write
DopplerDisable	Doppler compensation off (0) or on (1)	int	0.0	1.0	Read and Write
DopplerEnable	Disable (0) or enable (1) Doppler estimation	int	0.0	1.0	Read and Write
FHDEMOD_DetectThresholdDB	Detection threshold for signal acquisition; default is approximately 160 for -5 dB AWGN detection	float	0.0	300.0	Read and Write
FHDEMOD_HopSeqLen	Set the demodulator hop sequence length	int	1.0	8192.0	Read and Write
FHMOD_HopSeqLen	Set the modulator hop sequence length	int	1.0	8192.0	Read and Write
FHMOD_NumChipReps	Set the hop frequency redundancy for payloads	int	1.0	4.0	Read and Write
GainAdjustMode	Set gain mode: low gain (0), high gain (1), or automatic (2)	int	0.0	2.0	Read and Write
HP_FilterEnable	Disable (0) or enable (1) the high-pass filter	int	0.0	1.0	Read and Write
Headerless	Enable headerless streaming mode (0 is default)	int	0.0	1.0	Read and Write
InBandNoiseEnergy	Noise energy measured after the downsampling filter	float	0.0	1.0	Read Only
InbandEnergy	In-band energy parameter	float	0.0	0.0	Read Only
LedEnable	Disable all board LEDs (0) or enable board LEDs (1)	int	0.0	1.0	Read and Write
LocalID	Local modem ID, 0–254; 255 is broadcast	int	0.0	255.0	Read and Write
LoggingLevel	Logging verbosity level	int	0.0	5.0	Read and Write
MODEM_Enable	Disable (0) or enable (1) modem processing	int	0.0	1.0	Read and Write
PSK_BnTaps	Number of backward taps for the PSK equalizer. Forward plus backward taps must be less than the maximum value.	int	0.0	100.0	Read and Write
PSK_Constellation	Returns the last 64 constellation points from the PSK modem	float	0.0	0.0	Read Only
PSK_FnTaps	Number of forward taps for the PSK fractional (N/2) equalizer. Forward plus backward taps must be less than the maximum value.	int	0.0	100.0	Read and Write
PSK_PDSNR	Post-detection SNR for PSK	int	0.0	1.0	Read Only
PSK_PLL	Returns the PLL error	float	0.0	0.0	Read Only
PSK_Taps	Returns the current equalizer taps as an array with forward taps concatenated with backward taps	float	0.0	0.0	Read Only
PayloadMode	Payload bit rate: FH (0), QPSK 5120 bps (1), QPSK 2560 bps (2), QPSK 1920 bps (3), QPSK 1280 bps (4), BPSK 2560 bps (5), BPSK 1280 bps (6), BPSK 960 bps (7), or BPSK 640 bps (8)	int	0.0	8.0	Read and Write
PeakEnvelopePower	Peak envelope power of the previous transmission	float	0.0	0.0	Read Only
PlayMode	Play in passband (0) or baseband (1)	int	0.0	1.0	Read and Write
RNG_SpeedOfSound	Speed of sound in meters per second; adjust for water salinity and other conditions	float	340.0	1600.0	Read and Write
RNG_TA_DelayMs	Ranging hold time in milliseconds before a modem responds to a range request	int	2500.0	8000.0	Read and Write
RangeTimeout_mS	Range reply timeout in milliseconds	int	0.0	60000.0	Read and Write
RecordMode	Record in passband (0), baseband (1), or dual channel (2)	int	0.0	2.0	Read and Write
RemoteID	Remote modem ID, 0–254; 255 is broadcast	int	0.0	255.0	Read and Write
ReportErroredBytes	Control whether bytes in a bad-CRC packet are reported	int	0.0	1.0	Read and Write
RxEnable	Disable (0) or enable (1) receiver processing	int	0.0	1.0	Read and Write
RxScramblerMode	Disable (0) or enable (1) the receive scrambler	int	0.0	1.0	Read and Write
SNR	SNR estimate	float	0.0	0.0	Read Only
SSB_Enable	Enable SSB; default is 0	int	0.0	1.0	Read and Write
SSB_NREnable	Enable SSB advanced squelch, AGC, and noise reduction	int	0.0	1.0	Read and Write
SSB_SetPTT	Set the SSB push-to-talk state from the console	int	0.0	1.0	Read and Write
SSB_SqLevel	SSB squelch threshold; 0 is always on and the default is 0.005	float	0.0	1.0	Read and Write
SSB_Txpower	SSB output power scale; default is 1	float	0.0	100.0	Read and Write
SSB_UseGPIO	Process J7 P3 GPIO 8/6 and P9 GPIO 7/14 switches; default is 0	int	0.0	1.0	Read and Write
SSB_Volume	SSB speaker volume; default is 1	float	0.0	100.0	Read and Write
SSB_VxHang	SSB VOX hangover switch time in seconds; default is 2.0	float	0.0	10.0	Read and Write
SSB_VxLevel	SSB VOX switching threshold; 0 is always on and the default is 0.005	float	0.0	1.0	Read and Write
SSB_VxMode	Disable (0) or enable (1) voice-activated PTT (VOX)	int	0.0	1.0	Read and Write
SSB_carrier	Set the SSB transmit and receive carrier	int	22000.0	35000.0	Read and Write
SSB_sideband	Set SSB sideband to lower (0) or upper (1)	int	0.0	1.0	Read and Write
SignalEnergy	Signal energy measured during the last FH acquisition	float	0.0	1.0	Read Only
StreamingTxLen	Size of the superpacket when streaming or uploading	int	0.0	8192.0	Read and Write
SystemMode	System mode: data modem (0), SSB (1), data modem and SSB (2), or SMA input to transmit (3)	int	0.0	4.0	Read and Write
TCPecho	Disable (0) or enable (1) TCP echo in the Telnet transmit stream	int	0.0	1.0	Read and Write
Temp_Ambient	Ambient bottle temperature in degrees Celsius	float	0.0	0.0	Read Only
TxChirpMode	Disable (0) or enable (1) chirps before transmitted packets	int	0.0	1.0	Read and Write
TxEnable	Disable (0) or enable (1) transmit processing	int	0.0	1.0	Read and Write
TxPower	Transmit-power setting on the software scale	int	0.0	100.0	Read and Write
TxPowerWatts	Legacy transmit-power setting variable; this value is not a specified acoustic output in watts	float	0.0	1000.0	Read and Write
TxTimeout_mS	Transmit timeout in milliseconds	int	0.0	60000.0	Read and Write
UPCONVERT_Carrier	Upconverter carrier frequency in Hz	int	20000.0	59750.0	Read and Write
UPCONVERT_OutputScale	Upconverter output scale	float	0.0	10.0	Read and Write
UnitTestMode	When set to 1, pump data deterministically from a socket and disable recording and playback timeouts	int	0.0	1.0	Read and Write
brdState	Board state	int	0.0	0.0	Read Only
rxState	Present receiver state	int	0.0	0.0	Read Only
tpaState	Power amplifier state	int	0.0	0.0	Read Only