Functions
float	_demo_signal_sine (float t)
float	_demo_signal_ramp (float t)
float	_demo_signal_square (float t)
float	_demo_signal_noise (float t)
float	_demo_signal_step (float t)
float	_demo_signal_triangle (float t)
float	_demo_signal_double_sine (float t)
float	_demo_signal_decay (float t)
float	_demo_signal_pulse (float t)
float	_demo_signal_drift (float t)
float	_demo_signal_linear_cycle (float t)
float	_demo_signal_quadratic_cycle (float t)
float	_demo_signal_cubic_cycle (float t)
None	_precompute_demo_arrays ()
int	_psi_to_code (float psi, float a, float b, float c, float d)
bytes	create_sensor_data_packet (List[Tuple[int, List[Tuple[int, int]]]] chunks, int packet_type, int version, int timestamp_ms, int max_packet_size)
bytes	build_demo_packet (Dict[int, Tuple[float, float, float, float]] pt_calibration, float demo_start_time, float stats_start_time, int packet_type, int version, int max_packet_size, int num_connectors=10, float psi_min=0.0, float psi_max=700.0)

Variables
int	MAX_PACKET_SIZE = 512
str	PACKET_HEADER_FORMAT = "<BBI"
int	PACKET_HEADER_SIZE = 6
str	SENSOR_DATA_PACKET_FORMAT = "<BB"
int	SENSOR_DATA_PACKET_SIZE = 2
str	SENSOR_DATA_CHUNK_FORMAT = "<I"
int	SENSOR_DATA_CHUNK_SIZE = 4
str	SENSOR_DATAPOINT_FORMAT = "<BI"
int	SENSOR_DATAPOINT_SIZE = 5
int	DEMO_CODE_MIN = 0
tuple	DEMO_CODE_MAX = (1 << 32) - 1
int	PRECOMPUTED_LENGTH = 2000
float	PRECOMPUTED_STEP = 0.05
list	_DEMO_NORM_ARRAYS = []
list	DEMO_SIGNAL_FUNCTIONS
dict	DEMO_PT_SPECIAL_SIGNALS

Detailed Description

Fake sensor data generator for demo mode.
Builds UDP packets in the same format as the real boards so the GUI receives and
decodes them exactly like real hardware.

Buffer layout matches Diablo::create_sensor_data_packet() in DAQv2-Comms:
  - DiabloPackets.h: PacketHeader, SensorDataPacket, SensorDataChunk, SensorDatapoint
  - DiabloPacketUtils.cpp: write order = header -> body_header -> for each chunk
    (chunk timestamp -> num_sensors × datapoint)
No Qt or socket usage here.

Function Documentation

◆ _demo_signal_cubic_cycle()

float demo_sensor_sender._demo_signal_cubic_cycle ( float t )

protected

Smooth cubic 0->1->0, period 4 s, normalized [0, 1].

Definition at line 116 of file demo_sensor_sender.py.

◆ _demo_signal_decay()

float demo_sensor_sender._demo_signal_decay ( float t )

protected

Repeating exponential decay, period 2 s.

Definition at line 84 of file demo_sensor_sender.py.

◆ _demo_signal_double_sine()

float demo_sensor_sender._demo_signal_double_sine ( float t )

protected

Beat pattern from two close frequencies.

Definition at line 78 of file demo_sensor_sender.py.

References max, and min.

◆ _demo_signal_drift()

float demo_sensor_sender._demo_signal_drift ( float t )

protected

Slow linear drift + small deterministic variation, period 20 s.

Definition at line 97 of file demo_sensor_sender.py.

References max, and min.

◆ _demo_signal_linear_cycle()

float demo_sensor_sender._demo_signal_linear_cycle ( float t )

protected

Triangle wave, period 4 s, normalized [0, 1] (linear 0->1->0).

Definition at line 104 of file demo_sensor_sender.py.

◆ _demo_signal_noise()

float demo_sensor_sender._demo_signal_noise ( float t )

protected

Smoothed deterministic noise in [0, 1].

Definition at line 61 of file demo_sensor_sender.py.

References max, and min.

◆ _demo_signal_pulse()

float demo_sensor_sender._demo_signal_pulse ( float t )

protected

Short periodic spikes, period 2 s, duty 0.1 s.

Definition at line 92 of file demo_sensor_sender.py.

◆ _demo_signal_quadratic_cycle()

float demo_sensor_sender._demo_signal_quadratic_cycle ( float t )

protected

Parabola 0->1->0, period 4 s, normalized [0, 1].

Definition at line 110 of file demo_sensor_sender.py.

◆ _demo_signal_ramp()

float demo_sensor_sender._demo_signal_ramp ( float t )

protected

Sawtooth, repeating ramp up, period 4 s.

Definition at line 51 of file demo_sensor_sender.py.

◆ _demo_signal_sine()

float demo_sensor_sender._demo_signal_sine ( float t )

protected

Sine wave, period 4 s, scaled to [0, 1].

Definition at line 46 of file demo_sensor_sender.py.

◆ _demo_signal_square()

float demo_sensor_sender._demo_signal_square ( float t )

protected

Square wave, period 2 s.

Definition at line 56 of file demo_sensor_sender.py.

◆ _demo_signal_step()

float demo_sensor_sender._demo_signal_step ( float t )

protected

Two levels with slow transition, period 3 s per level.

Definition at line 67 of file demo_sensor_sender.py.

◆ _demo_signal_triangle()

float demo_sensor_sender._demo_signal_triangle ( float t )

protected

Triangle wave, period 4 s.

Definition at line 72 of file demo_sensor_sender.py.

◆ _precompute_demo_arrays()

None demo_sensor_sender._precompute_demo_arrays ( )

protected

Fill _DEMO_NORM_ARRAYS with fixed arrays of normalized [0,1] (run once at import).

Definition at line 147 of file demo_sensor_sender.py.

References max, and min.

Referenced by build_demo_packet().

◆ _psi_to_code()

int demo_sensor_sender._psi_to_code	(	float	psi,
		float	a,
		float	b,
		float	c,
		float	d )

protected

Inverse of cubic calibration: find ADC code that yields given psi (Newton-Raphson).

Definition at line 162 of file demo_sensor_sender.py.

References max, and min.

Referenced by build_demo_packet().

◆ build_demo_packet()

bytes demo_sensor_sender.build_demo_packet	(	Dict[int, Tuple[float, float, float, float]]	pt_calibration,
		float	demo_start_time,
		float	stats_start_time,
		int	packet_type,
		int	version,
		int	max_packet_size,
		int	num_connectors = 10,
		float	psi_min = 0.0,
		float	psi_max = 700.0 )

Build one UDP packet with synthetic PT data for demo mode.
Same structure as real boards: one chunk per connector (1..num_connectors),
one datapoint per chunk. Normalized signals [0,1] are mapped to [psi_min, psi_max]
and converted to ADC codes via inverse calibration so displayed psi ranges 0-700 for all.

Definition at line 229 of file demo_sensor_sender.py.

References _precompute_demo_arrays(), _psi_to_code(), create_sensor_data_packet(), and time.time().

◆ create_sensor_data_packet()

bytes demo_sensor_sender.create_sensor_data_packet	(	List[Tuple[int, List[Tuple[int, int]]]]	chunks,
		int	packet_type,
		int	version,
		int	timestamp_ms,
		int	max_packet_size )

Build a sensor data UDP packet. Byte layout is identical to
Diablo::create_sensor_data_packet() in DAQv2-Comms (DiabloPacketUtils.cpp):
header (6) -> num_chunks, num_sensors (2) -> for each chunk: timestamp (4)
then num_sensors × (sensor_id (1), data (4)).
chunks: list of (chunk_timestamp_ms, [(sensor_id, adc_code_uint32), ...])
All chunks must have the same number of datapoints (num_sensors).

Definition at line 179 of file demo_sensor_sender.py.

Referenced by build_demo_packet().

Variable Documentation

◆ _DEMO_NORM_ARRAYS

list demo_sensor_sender._DEMO_NORM_ARRAYS = []

protected

Definition at line 43 of file demo_sensor_sender.py.

◆ DEMO_CODE_MAX

tuple demo_sensor_sender.DEMO_CODE_MAX = (1 << 32) - 1

Definition at line 38 of file demo_sensor_sender.py.

◆ DEMO_CODE_MIN

int demo_sensor_sender.DEMO_CODE_MIN = 0

Definition at line 37 of file demo_sensor_sender.py.

◆ DEMO_PT_SPECIAL_SIGNALS

dict demo_sensor_sender.DEMO_PT_SPECIAL_SIGNALS

Initial value:

=  {
    4: (10, 0.0, 800.0),  # linear_cycle
    1: (11, 0.0, 800.0),  # quadratic_cycle
    5: (12, 0.0, 800.0),  # cubic_cycle
}

Definition at line 140 of file demo_sensor_sender.py.

◆ DEMO_SIGNAL_FUNCTIONS

list demo_sensor_sender.DEMO_SIGNAL_FUNCTIONS

Initial value:

=  [
    _demo_signal_sine,
    _demo_signal_ramp,
    _demo_signal_square,
    _demo_signal_noise,
    _demo_signal_step,
    _demo_signal_triangle,
    _demo_signal_double_sine,
    _demo_signal_decay,
    _demo_signal_pulse,
    _demo_signal_drift,
    _demo_signal_linear_cycle,
    _demo_signal_quadratic_cycle,
    _demo_signal_cubic_cycle,
]

Definition at line 122 of file demo_sensor_sender.py.

◆ MAX_PACKET_SIZE

int demo_sensor_sender.MAX_PACKET_SIZE = 512

Definition at line 20 of file demo_sensor_sender.py.

◆ PACKET_HEADER_FORMAT

str demo_sensor_sender.PACKET_HEADER_FORMAT = "<BBI"

Definition at line 24 of file demo_sensor_sender.py.

◆ PACKET_HEADER_SIZE

int demo_sensor_sender.PACKET_HEADER_SIZE = 6

Definition at line 25 of file demo_sensor_sender.py.

◆ PRECOMPUTED_LENGTH

int demo_sensor_sender.PRECOMPUTED_LENGTH = 2000

Definition at line 41 of file demo_sensor_sender.py.

◆ PRECOMPUTED_STEP

float demo_sensor_sender.PRECOMPUTED_STEP = 0.05

Definition at line 42 of file demo_sensor_sender.py.

◆ SENSOR_DATA_CHUNK_FORMAT

str demo_sensor_sender.SENSOR_DATA_CHUNK_FORMAT = "<I"

Definition at line 30 of file demo_sensor_sender.py.

◆ SENSOR_DATA_CHUNK_SIZE

int demo_sensor_sender.SENSOR_DATA_CHUNK_SIZE = 4

Definition at line 31 of file demo_sensor_sender.py.

◆ SENSOR_DATA_PACKET_FORMAT

str demo_sensor_sender.SENSOR_DATA_PACKET_FORMAT = "<BB"

Definition at line 27 of file demo_sensor_sender.py.

◆ SENSOR_DATA_PACKET_SIZE

int demo_sensor_sender.SENSOR_DATA_PACKET_SIZE = 2

Definition at line 28 of file demo_sensor_sender.py.

◆ SENSOR_DATAPOINT_FORMAT

str demo_sensor_sender.SENSOR_DATAPOINT_FORMAT = "<BI"

Definition at line 33 of file demo_sensor_sender.py.

◆ SENSOR_DATAPOINT_SIZE

int demo_sensor_sender.SENSOR_DATAPOINT_SIZE = 5

Definition at line 34 of file demo_sensor_sender.py.

Functions

Variables

Detailed Description

Function Documentation

◆ _demo_signal_cubic_cycle()

◆ _demo_signal_decay()

◆ _demo_signal_double_sine()

◆ _demo_signal_drift()

◆ _demo_signal_linear_cycle()

◆ _demo_signal_noise()

◆ _demo_signal_pulse()

◆ _demo_signal_quadratic_cycle()

◆ _demo_signal_ramp()

◆ _demo_signal_sine()

◆ _demo_signal_square()

◆ _demo_signal_step()

◆ _demo_signal_triangle()

◆ _precompute_demo_arrays()

◆ _psi_to_code()

◆ build_demo_packet()

◆ create_sensor_data_packet()

Variable Documentation

◆ _DEMO_NORM_ARRAYS

◆ DEMO_CODE_MAX

◆ DEMO_CODE_MIN

◆ DEMO_PT_SPECIAL_SIGNALS

◆ DEMO_SIGNAL_FUNCTIONS

◆ MAX_PACKET_SIZE

◆ PACKET_HEADER_FORMAT

◆ PACKET_HEADER_SIZE

◆ PRECOMPUTED_LENGTH

◆ PRECOMPUTED_STEP

◆ SENSOR_DATA_CHUNK_FORMAT

◆ SENSOR_DATA_CHUNK_SIZE

◆ SENSOR_DATA_PACKET_FORMAT

◆ SENSOR_DATA_PACKET_SIZE

◆ SENSOR_DATAPOINT_FORMAT

◆ SENSOR_DATAPOINT_SIZE