DAQDriverBase

class DAQDriverBase

Bases: ABC

Vendor DAQ driver contract.

The driver is the single source of truth for configured channels and timing config, held in private dicts/slots that __init__ initializes so every concrete driver has the same shape; subclasses call super().__init__() and then populate those privates inside their own configure_* methods (self._ai_channels[channel.alias] = channel, self._ai_hw_timing_config = hw_timing_config, etc.). Read-only @property accessors hand back frozen snapshots so the state can’t be mutated from outside the configure_* path; InstroDAQ exposes the same snapshots for user introspection — it does not keep its own copies.

Attributes

ai_channels	Frozen snapshot of configured AI channels, keyed by alias.
ai_hw_timing_config
ao_channels	Frozen snapshot of configured AO channels, keyed by alias.
ao_hw_timing_config
channels	Frozen snapshot of all configured AI/AO/DI/DO channels (excludes relays).
di_channels	Frozen snapshot of configured DI channels, keyed by alias.
di_hw_timing_config
do_channels	Frozen snapshot of configured DO channels, keyed by alias.
do_hw_timing_config
relay_channels	Frozen snapshot of configured relay channels, keyed by alias.
points_in_buffer

Methods

close	Close every task/handle owned by the driver.
close_relay	Close the relay (connect the circuit).
configure_ai_channel	Deprecated: implement configure_ai_voltage_channel instead.
configure_ai_current_channel	Register an AI current channel.
configure_ai_hw_timing	Configure hardware-timed AI sampling at hw_timing_config.sample_rate.
configure_ai_thermocouple_channel	Register an AI thermocouple channel.
configure_ai_voltage_channel	Register an AI voltage channel with the underlying driver.
configure_ao_channel	Deprecated: implement configure_ao_voltage_channel instead.
configure_ao_current_channel	Register an AO current channel.
configure_ao_voltage_channel	Register an AO voltage channel.
configure_di_line_channel	Parse, program, and register a DI line channel.
configure_di_port_channel	Parse, program, and register a DI port channel.
configure_do_line_channel	Parse, program, and register a DO line channel.
configure_do_port_channel	Parse, program, and register a DO port channel.
define_relay_channel	Build a RelayChannel for physical_channel (e.g. "3101" = slot 3 / channel 101).
fetch_analog	Block until samples_per_channel new AI samples are available, then return them.
get_actual_sample_rate	Actual hardware sample rate achieved after start().
open	Open the underlying transport (or verify the device is present, for handle-less SDKs).
open_relay	Open the relay (disconnect the circuit).
read_analog	Software-timed read of every configured AI channel.
read_digital_line	Sample a single DI line.
read_digital_port	Sample a multi-line DI port.
start	Start hardware-timed acquisition.
stop	Stop a running acquisition and release any scan buffers.
write_analog_value	Write value to AO channel.
write_digital_line	Drive a single DO line.
write_digital_port	Drive a multi-line DO port.