fluidlab.daq.daqmx¶
DAQmx (National Instruments, fluidlab.instruments.daq.daqmx
)¶
Todo
DAQmx interface and drivers (using Comedi API?)…
Provides:
- fluidlab.daq.daqmx.read_analog(resource_names, terminal_config, volt_min, volt_max, samples_per_chan=1, sample_rate=1, coupling_types='DC', output_filename=None, verbose=False)[source]¶
Read from the analog input subdevice.
- Parameters:
- resource_names: {str or iterable of str}
Analogic input identifier(s), e.g. ‘Dev1/ai0’.
- terminal_config: {‘Diff’, ‘PseudoDiff’, ‘RSE’, ‘NRSE’}
A type of configuration (apply to all terminals).
- volt_min{number or iterable of numbers}
Minima for the channels.
- volt_max{number or iterable of numbers}
Maxima for the channels.
- samples_per_chan: number
Number of samples per channel to read.
- sample_rate: number
Sample rate for all channels (Hz).
- coupling_types{‘DC’, ‘AC’, ‘GND’, list of str}
Type of coupling for each resource.
- output_filename: {None, str}
If specified data is output into this file instead of output arrays.
- verbose: {False, boolean}
If True, print more verbose message
- fluidlab.daq.daqmx.write_analog(resource_names, sample_rate=1, volt_min=-10.0, volt_max=10.0, signals=None, blocking=True, verbose=False)[source]¶
Write analogic output
- Parameters:
- resource_name:
Analogic input identifier(s), e.g. ‘Dev1/ao0’.
- sample_rate: number
Frequency rate for all channels (Hz).
- volt_min: {number or iterable of numbers}
Minima for the channels
- volt_max: {number or iterable of numbers}
Maxima for the channels
- signals: numpy.ndarray or simple scalar
The signal(s) to be output.
- blocking: bool
Specifies whether to wait until the task is done before returning. If blocking=false, then a task object is returned. To stop the task, use the
write_analog_end_task()
function.
- fluidlab.daq.daqmx.write_analog_end_task(task, timeout=0.0)[source]¶
This function ends a writing task that has been created with blocking=False.
- Parameters:
- taskPyDAQmx.Task
The task to end.
- timeoutnumber
Time (in s) to wait before stopping the task if it is not done.
- fluidlab.daq.daqmx.measure_freq(resource_name, freq_min=1, freq_max=1000)[source]¶
Read analogic output
- Parameters:
- resource_name: str
Analogic input identifier, e.g. ‘Dev1/ctr0’.
- freq_minnumber
The minimum frequency (Hz) that you expect to measure.
- freq_maxnumber
The maximum frequency (Hz) that you expect to measure.
Functions
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Read analogic output |
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Read from the analog input subdevice. |
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Write analogic output |
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This function ends a writing task that has been created with blocking=False. |