Added sphinx documentation strings
This commit is contained in:
Markus Rosenstihl
parent
d656daef5b
commit
7f6839479c
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@ -1,4 +1,4 @@
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# -*- coding: iso-8859-1 -*-
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# -*- coding: utf-8 -*-
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import types
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import numpy
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@ -69,6 +69,10 @@ class StateLoop(StateList):
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import dac
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class Experiment:
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"""
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Class holding the complete state tree for a single experiment. This state tree represents one
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program on the pulse card. It is written in a single file and picked up by the backend.
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"""
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## Experiment class holding the state tree
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job_id = 0
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@ -83,17 +87,6 @@ class Experiment:
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# Commands -------------------------------------------------------------------------------------
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## Deprecated
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def rf_pulse(self, value, length = None):
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"""
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deprecated: use ttl_pulse
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"""
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s_content = '<ttlout value="0x%06x"/>' % value
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if length is None:
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self.state_list.append(s_content)
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else:
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self.state_list.append(StateSimple(length, s_content))
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## Creates a state with ttl signals of duration *length*.
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#
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@ -105,11 +98,13 @@ class Experiment:
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# @param value select the channels via decimal representation (2**0 + 2**1 ...)
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def ttl_pulse(self, length, channel = None, value = None):
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"""
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Creates a state with length *length* and switches
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some bits of the pulse programmer to HIGH:
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* channel: this selects a single channel (No. 1 - 24)
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* value: this is the integer representation of the 24bit word,
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as an example value=3 selects channels 1 and 2 (2**1 + 2**2)
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Creates a state with length **length** and switches
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requested bits of the pulse programmer to HIGH:
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:param float length: pulse length in seconds
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:param int channel: selects a single channel (No. 1 - 24)
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:param int value: lines to set (integer) for example value=3 selects channels 1 and 2 (2**1 + 2**2)
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"""
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the_value=0
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if value is not None:
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@ -122,7 +117,11 @@ class Experiment:
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## Same as ttl_pulse, but no *channel* keyword
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def ttls(self, length = None, value = None):
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"""
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same as ttl_pulse, but no *channel* keyword
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Same as ttl_pulse, but no *channel* keyword
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:param float length:
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:param int value: lines to set (integer)
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:return:
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"""
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the_value=int(value)
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s_content = '<ttlout value="0x%06x"/>' % the_value
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@ -133,15 +132,15 @@ class Experiment:
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## Beginning of a new state
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def state_start(self, time):
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"""
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starts a state in the pulse programs with duration *time*.
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This must be closed with state_end
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Starts a state in the pulse programs with duration *time*.
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This must be closed with state_end()
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"""
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self.state_list.append('<state time="%s">\n' % repr(time))
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## End of *state_start*
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def state_end(self):
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"""
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closes a state after start_state
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Closes a previous start_state()
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"""
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self.state_list.append('</state>\n')
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@ -149,6 +148,13 @@ class Experiment:
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# @param time Duration of this state
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# @param ttls Additinional ttl channels
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def wait(self, time, ttls=None):
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"""
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Wait specified **time** doing nothing.
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:param float time: seconds to wait
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:param int ttls: lines to set (integer)
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:return:
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"""
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if ttls is not None:
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s_content = '<ttlout value="0x%06x"/>' % ttls
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self.state_list.append(StateSimple(time,s_content))
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@ -162,6 +168,16 @@ class Experiment:
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# @param sensitivity Sensitivity in Umax/V
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# @param ttls Additional ttl channels
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def record(self, samples, frequency, timelength=None, sensitivity = None, ttls=None, channels = 3, offset = None, impedance = None):
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"""
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Records data with given number of samples, sampling frequency and sensitivity
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:param int samples: Number of samples to record
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:param float frequency: Sampling frequency
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:param float timelength: Length of this state, per default calculated automatically
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:param float sensitivity: Sensitivity in Umax/V
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:param int ttls: lines to set (integer)
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:param int channels: default=3, Number of channels counting from 0
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"""
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attributes='s="%d" f="%d"'%(samples,frequency)#%g
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if channels != 1 and channels != 3 and channels != 5 and channels != 15:
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raise ValueError, "Channel definition is illegal"
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@ -209,10 +225,14 @@ class Experiment:
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## Create a loop on the pulse programmer. Loop contents can not change inside the loop.
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# @params iterations Number of loop iterations
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def loop_start(self, iterations):
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"""creates a loop of given number of iterations and has to be closed by loop_end().
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"""
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creates a loop of given number of iterations and has to be closed by loop_end().
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Commands inside the loop can not change, i.e. the parameters are the same for each loop run.
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This loop is created on the pulse programmer, thus saving commands.
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One must close the loop with loop_end (see below)"""
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One must close the loop with loop_end (see below)!
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:param int iterations: iterations to loop
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"""
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l = StateLoop(iterations)
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self.state_list.append(l)
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# (These two lines could probably be guarded by a mutex)
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@ -221,6 +241,9 @@ class Experiment:
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## End loop state
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def loop_end(self):
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"""
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Closes a loop_start() statement.
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"""
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# (This line could probably be guarded by a mutex)
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self.state_list = self.list_stack.pop(-1)
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@ -231,12 +254,13 @@ class Experiment:
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# @param ttls Additional ttl channels
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def set_frequency(self, frequency, phase, ttls=0):
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"""
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Sets the frequency and phase of the frequency source and optionally further channels.
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The time needed to set the frequency is 2 us.
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Switch pulse programmer line with *ttls* .
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Sets the frequency and phase of the frequency source and optionally further channels.
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The state length is 2 µs. Stabilisation time depends on RF source.
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:param float frequency: frequency to set in Hz
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:param float phase: phase to set
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:param int ttls: default=0, lines to set (integer)
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"""
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"Sets the frequency generator to a desired frequency (Hz)"
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s_content = '<analogout id="0" f="%f" phase="%f"/>' % (frequency, phase)
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if ttls != 0:
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s_content += '<ttlout value="0x%06x"/>' % ttls
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@ -254,6 +278,11 @@ class Experiment:
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If you wnat to set a trigger, set trigger (default=4, i.e. channel 2)
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If you want shaped gradients: shape=(ashape, resolution), ashape can be rec, sin2, sin
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:param int dac_value: DAC value to set
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:param float length: Duration of the state, minimum length is 42*90ns=3.78us (default)
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:param str shape: Tuple of (shape, resolution/seconds), shape can be one of: rec (default), sin2, sin
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:param bool is_seq: If set to *True*, do NOT set DAC to zero after this state
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:param int trigger: default=4, lines to set (integer)
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"""
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try:
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form, resolution = shape
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@ -298,35 +327,9 @@ class Experiment:
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# set it back to zero
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s_content = '<ttlout value="%s"/><analogout id="1" dac_value="0"/>' % (trigger)
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self.state_list.append(StateSimple(resolution, s_content))
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else: # don't know what to do
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raise SyntaxError , "form is unknown: %s"%form
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## Deprecated, use set_pfg instead
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def set_pfg_wt(self, I_out=None, dac_value=None, length=None, is_seq=0, trigger=4):
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"""
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This sets the value for the PFG (plus trigger, default=2**2), it also sets it back automatically.
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If you don't whish to do so (i.e. line shapes) set is_seq=1
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"""
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# raise DeprecationWarning, "to be removed in future, use set_pfg instead"
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if I_out == None and dac_value == None:
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dac_value=0
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if I_out != None and dac_value == None:
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dac_value=dac.conv(I_out)
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if I_out == None and dac_value != None:
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dac_value=dac_value
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if I_out !=None and dac_value != None:
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dac_value = 0
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print "WARNING: You can't set both, I_out and dac_value! dac_value set to 0"
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if length==None:
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length=42*9e-8
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s_content = '<analogout id="1" dac_value="%i"/><ttlout value="%s"/>' \
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% (dac_value, trigger)
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self.state_list.append(StateSimple(length, s_content))
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if is_seq == 0:
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s_content = '<analogout id="1" dac_value="0"/><ttlout value="%s"/>' \
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% trigger
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self.state_list.append(StateSimple(42*9e-8, s_content))
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## sets the value of a DAC
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# @param dac_value DAC value to set
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@ -336,9 +339,18 @@ class Experiment:
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# @param ttls Additional ttl channels
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def set_dac(self, dac_value, dac_id=1, length=None, is_seq=False, ttls=0):
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"""
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This sets the value for the DAC and possibly some TTLs.
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It also sets it back automatically.
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If you don't whish to do so (i.e. line shapes) set is_seq=True
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This sets the value for the DAC and if given the TTLs.
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It also sets it back to zero automatically.
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If you don't whish to set the value back to zero (i.e. line shapes) set is_seq=True
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The state length is at least 3.78 µs (is_seq=1) or 7.28µs (is_seq=0).
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:param int dac_value: dac value, between -2**19-1 and +2**19
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:param int dac_id: default=1, which dac to control
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:param float length: default=None, length of this state in seconds. If *None* length=42*90ns=3.78µs
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:param bool is_seq: default=False, do not reset DAC to 0 (zero) if True
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:param int ttls: default=0, lines to set (integer)
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"""
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if length==None:
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length=42*9e-8
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@ -355,6 +367,15 @@ class Experiment:
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# @param phase New phase to set
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# @param ttls Additional ttl channels
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def set_phase(self, phase, ttls=0):
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"""
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Sets the phase of the RF source to this value.
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Note: This is relative to the phase at the beginnig of the experiment.
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The state length is 0.5 µs, but the stabilisation time is RF source dependent. Typical
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values for PTS310 is 2 µs.
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:param float phase: phase to set
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:param int ttls: default=0, lines to set (integer)
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"""
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s_content = '<analogout phase="%f" />' % (phase)
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if ttls!=0:
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s_content += '<ttlout value="%d"/>' % ttls
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@ -377,7 +398,8 @@ class Experiment:
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## set the PTS310/PTS500 frequency source to local mode
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def set_pts_local(self):
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"""
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this will set the PTS310/PTS500 frequency source to local mode
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Sets the PTS310/PTS500 frequency source to local mode.
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State length is 2 µs.
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"""
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self.state_list.append(StateSimple(1e-6, '<ttlout value="0xf000"/>'))
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self.state_list.append(StateSimple(1e-6, '<ttlout value="0x8000"/>'))
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@ -388,12 +410,20 @@ class Experiment:
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# Public Methods -------------------------------------------------------------------------------
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def get_job_id(self):
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"Returns the current job-id the experiment got"
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"""
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Returns the job-id of the current experiment
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:returns: job_id
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"""
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return self.job_id
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def write_xml_string(self):
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"Returns the current program as a string"
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"""
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Returns the current program as a string
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:returns: XML string
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"""
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# Standart XML-Kopf
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xml_string = '<?xml version="1.0" encoding="ISO-8859-1"?>\n'
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@ -442,7 +472,10 @@ class Experiment:
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return xml_string
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def write_quit_job(self):
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"Returns a xml quit-job"
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"""
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Returns a xml quit-job
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:returns: XML quit-job
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"""
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return '<?xml version="1.0" encoding="ISO-8859-1"?>\n<quit/>'
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