improve k2601b driver
- activate current/voltage by setting their target - deactive output by setting both active parameters to False - split out power and resistivity to be separate modules Change-Id: Ie2d7353bcd088da496f547da6fe83a192001fe8f Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/27910 Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de> Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>
This commit is contained in:
parent
39a3e79eb3
commit
8767be2aac
@ -18,12 +18,18 @@
|
||||
# Module authors:
|
||||
# Markus Zolliker <markus.zolliker@psi.ch>
|
||||
# *****************************************************************************
|
||||
"""Keithley 2601B source meter
|
||||
"""Keithley 2601B 4 quadrant source meter
|
||||
|
||||
not tested yet"""
|
||||
not tested yet
|
||||
|
||||
from secop.core import Attached, BoolType, EnumType, FloatRange, \
|
||||
HasIO, Module, Parameter, StringIO, Writable
|
||||
* switching between voltage and current happens by setting their target
|
||||
* switching output off by setting the active parameter of the controlling
|
||||
module to False.
|
||||
* setting the active parameter to True raises an error
|
||||
"""
|
||||
|
||||
from secop.core import Attached, BoolType, Done, EnumType, FloatRange, \
|
||||
HasIO, Module, Parameter, Readable, StringIO, Writable
|
||||
|
||||
|
||||
class K2601bIO(StringIO):
|
||||
@ -31,46 +37,76 @@ class K2601bIO(StringIO):
|
||||
|
||||
|
||||
SOURCECMDS = {
|
||||
0: 'reset()'
|
||||
' smua.source.output = 0 print("ok")',
|
||||
1: 'reset()'
|
||||
'smua.source.func = smua.OUTPUT_DCVOLTS '
|
||||
'display.smua.measure.func = display.MEASURE_DCAMP '
|
||||
'smua.source.autorangev = 1',
|
||||
' smua.source.func = smua.OUTPUT_DCAMPS'
|
||||
' display.smua.measure.func = display.MEASURE_VOLTS'
|
||||
' smua.source.autorangei = 1'
|
||||
' smua.source.output = 1 print("ok")',
|
||||
2: 'reset()'
|
||||
'smua.source.func = smua.OUTPUT_DCAMPS '
|
||||
'smua.source.autorangei = 1',
|
||||
' smua.source.func = smua.OUTPUT_DCVOLTS'
|
||||
' display.smua.measure.func = display.MEASURE_DCAMPS'
|
||||
' smua.source.autorangev = 1'
|
||||
' smua.source.output = 1 print("ok")',
|
||||
}
|
||||
|
||||
|
||||
class SourceMeter(HasIO, Module):
|
||||
|
||||
resistivity = Parameter('readback resistivity', FloatRange(unit='Ohm'))
|
||||
power = Parameter('readback power', FloatRange(unit='W'))
|
||||
export = False # export for tests only
|
||||
mode = Parameter('measurement mode', EnumType(off=0, current=1, voltage=2),
|
||||
readonly=False, default=0)
|
||||
active = Parameter('output enable', BoolType(), readonly=False)
|
||||
readonly=False, export=False)
|
||||
ilimit = Parameter('current limit', FloatRange(0, 2.0, unit='A'), default=2)
|
||||
vlimit = Parameter('voltage limit', FloatRange(0, 2.0, unit='V'), default=2)
|
||||
|
||||
ioClass = K2601bIO
|
||||
|
||||
def read_resistivity(self):
|
||||
return self.communicate('print(smua.measure.r())')
|
||||
|
||||
def read_power(self):
|
||||
return self.communicate('print(smua.measure.p())')
|
||||
|
||||
def read_active(self):
|
||||
return self.communicate('print(smua.source.output)')
|
||||
|
||||
def write_active(self, value):
|
||||
return self.communicate('smua.source.output = %d print(smua.source.output)' % value)
|
||||
|
||||
# for now, mode will not be read from hardware
|
||||
def read_mode(self):
|
||||
return float(self.communicate('print((smua.source.func+1)*smua.source.output)'))
|
||||
|
||||
def write_mode(self, value):
|
||||
if value == 0:
|
||||
self.write_active(0)
|
||||
else:
|
||||
self.communicate(SOURCECMDS[value] + ' print(0)')
|
||||
return value
|
||||
if value == 'current':
|
||||
self.write_vlimit(self.vlimit)
|
||||
elif value == 'voltage':
|
||||
self.write_ilimit(self.ilimit)
|
||||
assert self.communicate(SOURCECMDS[value]) == 'ok'
|
||||
return self.read_mode()
|
||||
|
||||
def read_ilimit(self):
|
||||
if self.mode == 'current':
|
||||
return self.ilimit
|
||||
return float(self.communicate('print(smua.source.limiti)'))
|
||||
|
||||
def write_ilimit(self, value):
|
||||
if self.mode == 'current':
|
||||
return self.ilimit
|
||||
return float(self.communicate('smua.source.limiti = %g print(smua.source.limiti)' % value))
|
||||
|
||||
def read_vlimit(self):
|
||||
if self.mode == 'voltage':
|
||||
return self.ilimit
|
||||
return float(self.communicate('print(smua.source.limitv)'))
|
||||
|
||||
def write_vlimit(self, value):
|
||||
if self.mode == 'voltage':
|
||||
return self.ilimit
|
||||
return float(self.communicate('smua.source.limitv = %g print(smua.source.limitv)' % value))
|
||||
|
||||
|
||||
class Power(HasIO, Readable):
|
||||
value = Parameter('readback power', FloatRange(unit='W'))
|
||||
ioClass = K2601bIO
|
||||
|
||||
def read_value(self):
|
||||
return float(self.communicate('print(smua.measure.p())'))
|
||||
|
||||
|
||||
class Resistivity(HasIO, Readable):
|
||||
value = Parameter('readback resistivity', FloatRange(unit='Ohm'))
|
||||
ioClass = K2601bIO
|
||||
|
||||
def read_value(self):
|
||||
return float(self.communicate('print(smua.measure.r())'))
|
||||
|
||||
|
||||
class Current(HasIO, Writable):
|
||||
@ -78,42 +114,44 @@ class Current(HasIO, Writable):
|
||||
|
||||
value = Parameter('measured current', FloatRange(unit='A'))
|
||||
target = Parameter('set current', FloatRange(unit='A'))
|
||||
active = Parameter('current is controlled', BoolType(), default=False) # polled from Current/Voltage
|
||||
active = Parameter('current is controlled', BoolType(), default=False)
|
||||
limit = Parameter('current limit', FloatRange(0, 2.0, unit='A'), default=2)
|
||||
|
||||
def initModule(self):
|
||||
self.sourcemeter.registerCallbacks(self)
|
||||
|
||||
def read_value(self):
|
||||
return self.communicate('print(smua.measure.i())')
|
||||
return float(self.communicate('print(smua.measure.i())'))
|
||||
|
||||
def read_target(self):
|
||||
return self.communicate('print(smua.source.leveli)')
|
||||
return float(self.communicate('print(smua.source.leveli)'))
|
||||
|
||||
def write_target(self, value):
|
||||
if not self.active:
|
||||
raise ValueError('current source is disabled')
|
||||
if value > self.limit:
|
||||
if value > self.sourcemeter.ilimit:
|
||||
raise ValueError('current exceeds limit')
|
||||
return self.communicate('smua.source.leveli = %g print(smua.source.leveli)' % value)
|
||||
value = float(self.communicate('smua.source.leveli = %g print(smua.source.leveli)' % value))
|
||||
if not self.active:
|
||||
self.sourcemeter.write_mode('current') # triggers update_mode -> set active to True
|
||||
return value
|
||||
|
||||
def read_limit(self):
|
||||
if self.active:
|
||||
return self.limit
|
||||
return self.communicate('print(smua.source.limiti)')
|
||||
return self.sourcemeter.read_ilimit()
|
||||
|
||||
def write_limit(self, value):
|
||||
if self.active:
|
||||
return value
|
||||
return self.communicate('smua.source.limiti = %g print(smua.source.limiti)' % value)
|
||||
return self.sourcemeter.write_ilimit(value)
|
||||
|
||||
def read_active(self):
|
||||
return self.sourcemeter.mode == 1 and self.sourcemeter.read_active()
|
||||
def update_mode(self, mode):
|
||||
# will be called whenever the attached sourcemeters mode changes
|
||||
self.active = mode == 'current'
|
||||
|
||||
def write_active(self, value):
|
||||
if self.sourcemeter.mode != 1:
|
||||
if value:
|
||||
self.sourcemeter.write_mode(1) # switch to current
|
||||
else:
|
||||
return 0
|
||||
return self.sourcemeter.write_active(value)
|
||||
self.sourcemeter.read_mode()
|
||||
if value == self.value:
|
||||
return Done
|
||||
if value:
|
||||
raise ValueError('activate only by setting target')
|
||||
self.sourcemeter.write_mode('off') # triggers update_mode -> set active to False
|
||||
return Done
|
||||
|
||||
|
||||
class Voltage(HasIO, Writable):
|
||||
@ -122,38 +160,40 @@ class Voltage(HasIO, Writable):
|
||||
value = Parameter('measured voltage', FloatRange(unit='V'))
|
||||
target = Parameter('set voltage', FloatRange(unit='V'))
|
||||
active = Parameter('voltage is controlled', BoolType())
|
||||
limit = Parameter('current limit', FloatRange(0, 2.0, unit='V'), default=2)
|
||||
limit = Parameter('voltage limit', FloatRange(0, 2.0, unit='V'), default=2)
|
||||
|
||||
def initModule(self):
|
||||
self.sourcemeter.registerCallbacks(self)
|
||||
|
||||
def read_value(self):
|
||||
return self.communicate('print(smua.measure.v())')
|
||||
return float(self.communicate('print(smua.measure.v())'))
|
||||
|
||||
def read_target(self):
|
||||
return self.communicate('print(smua.source.levelv)')
|
||||
return float(self.communicate('print(smua.source.levelv)'))
|
||||
|
||||
def write_target(self, value):
|
||||
if not self.active:
|
||||
raise ValueError('voltage source is disabled')
|
||||
if value > self.limit:
|
||||
if value > self.sourcemeter.vlimit:
|
||||
raise ValueError('voltage exceeds limit')
|
||||
return self.communicate('smua.source.levelv = %g print(smua.source.levelv)' % value)
|
||||
value = float(self.communicate('smua.source.levelv = %g print(smua.source.levelv)' % value))
|
||||
if not self.active:
|
||||
self.sourcemeter.write_mode('voltage') # triggers update_mode -> set active to True
|
||||
return value
|
||||
|
||||
def read_limit(self):
|
||||
if self.active:
|
||||
return self.limit
|
||||
return self.communicate('print(smua.source.limitv)')
|
||||
return self.sourcemeter.read_vlimit()
|
||||
|
||||
def write_limit(self, value):
|
||||
if self.active:
|
||||
return value
|
||||
return self.communicate('smua.source.limitv = %g print(smua.source.limitv)' % value)
|
||||
return self.sourcemeter.write_vlimit(value)
|
||||
|
||||
def read_active(self):
|
||||
return self.sourcemeter.mode == 2 and self.sourcemeter.read_active()
|
||||
def update_mode(self, mode):
|
||||
# will be called whenever the attached sourcemeters mode changes
|
||||
self.active = mode == 'voltage'
|
||||
|
||||
def write_active(self, value):
|
||||
if self.sourcemeter.mode != 2:
|
||||
if value:
|
||||
self.sourcemeter.write_mode(2) # switch to voltage
|
||||
else:
|
||||
return 0
|
||||
return self.sourcemeter.write_active(value)
|
||||
self.sourcemeter.read_mode()
|
||||
if value == self.value:
|
||||
return Done
|
||||
if value:
|
||||
raise ValueError('activate only by setting target')
|
||||
self.sourcemeter.write_mode('off') # triggers update_mode -> set active to False
|
||||
return Done
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user