MCCDriver#

class MCCDriver(device_id: str, buffer_multiplier: int = 2)[source]#

Bases: DAQDriverBase

MCC (Universal Library / mcculw) DAQ driver.

Initialize the MCC DAQ driver.

Parameters:

device_id – Device unique ID, optionally with a board number as "<serial>:<board_number>" (e.g. "344371:0"). Defaults to board 0.
buffer_multiplier – Circular-buffer size relative to per-fetch size. Higher values tolerate more jitter at the cost of memory.

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`	Disconnect from MCC device.
`close_relay`	Close the relay (connect the circuit).
`configure_ai_channel`	Deprecated: use `configure_ai_voltage_channel`.
`configure_ai_current_channel`	Configure a current input channel on the MCC DAQ device.
`configure_ai_hw_timing`	Configure hardware timing for the specified channels.
`configure_ai_thermocouple_channel`	Configure a thermocouple input channel on the MCC DAQ device.
`configure_ai_voltage_channel`	Configure a voltage analog input channel on the MCC DAQ device.
`configure_ao_channel`	Deprecated: use `configure_ao_voltage_channel`.
`configure_ao_current_channel`	Register an AO current channel.
`configure_ao_voltage_channel`	Configure a voltage analog output channel on the MCC DAQ device.
`configure_di_line_channel`	Parse `DigitalPortType/#`, configure the bit for DI, and register the line.
`configure_di_port_channel`	Parse `DigitalPortType`, configure the port for DI, and register the port.
`configure_do_line_channel`	Parse `DigitalPortType/#`, configure the bit for DO, and register the line.
`configure_do_port_channel`	Parse `DigitalPortType`, configure the port for DO, and register the port.
`define_relay_channel`	Build a `RelayChannel` for `physical_channel` (e.g. `"3101"` = slot 3 / channel 101).
`fetch_analog`	Block until `samples_per_channel` new samples are available, then drain the circular buffer.
`get_actual_sample_rate`	Actual hardware sample rate achieved after `start()`.
`get_info`	Device capabilities snapshot captured at `open()`.
`open`	Connect to MCC device.
`open_relay`	Open the relay (disconnect the circuit).
`read_analog`	Read from analog input channels; thermocouple channels return temperature in their configured unit.
`read_digital_line`	Read 0/1 from a single DI line (`DigitalLineChannel`).
`read_digital_port`	Read an N-bit value from a DI port (bit i reflects line i).
`start`	Start the MCC DAQ device for hw timed data acquisition.
`stop`	Stop the MCC DAQ device.
`write_analog_value`	Write an analog value to an analog output channel.
`write_digital_line`	Write 0/1 to a single DO line (`DigitalLineChannel`).
`write_digital_port`	Write an N-bit value to a DO port (bit i drives line i).