def set_output_voltage(self, volts):
if volts > 5.0:
volts = 5.0
elif volts < 0.0:
volts = 0.0
output_value = int(0xffff * volts / 5.0)
print output_value
labjack.getFeedback(u3.DAC16(Dac=0, Value = output_value))
def AnalogOutputOneGiveVoltagePin(Pin=None, Voltage=None, Bits=None):
'''
Desc: Sets voltage on a particular pin with particular property to the configured level.
All pin, volatge and resolution are set from the keyboard.
Ex:
>>> LJU3HV.AnalogOutput(Pin=1, Voltage=1.57, Bits=8)
The voltage on DAC1 is set to 1.57 V
'''
if Pin is None:
print 'No pin is given'
else:
pass
if Voltage is not None:
#voltage scale validation
if Voltage > 5:
print 'The proposed voltage on pin DAC %d is greater than 5 V\nThe voltage was set to 5' % (
Pin)
Voltage = 5
else:
pass
if Voltage < 0:
print 'The proposed voltage on pin DAC %d is less than 0 V\nThe voltage was set to 0' % (
Pin)
Voltage = 0
else:
pass
VoltageLevel = Voltage
if Bits == 16:
d.getFeedback(
u3.DAC16(Dac=Pin,
Value=d.voltageToDACBits(volts=VoltageLevel,
dacNumber=Pin,
is16Bits=True)))
elif Bits == 8:
d.getFeedback(
u3.DAC8(Dac=Pin,
Value=d.voltageToDACBits(volts=VoltageLevel,
dacNumber=Pin,
is16Bits=False)))
else:
print 'The number of bits should be either 8 or 16'
else:
print('Please set some value')
def set_voltage(self, voltage, DAC=0, is16bits=True):
setbits = self.u.voltageToDACBits(voltage, is16Bits=is16bits)
if is16bits:
self.u.getFeedback(u3.DAC16(Dac=DAC, Value=setbits))
binary = bin(setbits)[2:].zfill(16)
actualV = int(binary[:10], 2) / (2**10) * (4.95 - 0.04) + 0.04
# print(actualV)
return actualV
else:
self.u.getFeedback(u3.DAC8(Dac=DAC, Value=setbits))
binary = bin(setbits)[2:].zfill(8)
actualV = int(binary[:8], 2) / (2**8) * (4.95 - 0.04) + 0.04
# print(actualV)
return actualV
def AnalogOutputOneGiveVoltagePin16bits(Pin=None, Voltage=None):
'''
Desc: Sets voltage on a particular pin with particular property to the configured level.
All pin and voltage are set from the keyboard. The resolution is 16 bits.
Ex:
>>> LJU3HV.AnalogOutput(Pin=1, Voltage=2.06)
The voltage on DAC1 is set to 2.06 V
'''
if Pin is None:
print 'No pin is given'
else:
pass
if Voltage is not None:
#voltage scale validation
if Voltage > 5:
print 'The proposed voltage on pin DAC %d is greater than 5 V\nThe voltage was set to 5' % (
Pin)
Voltage = 5
else:
pass
if Voltage < 0:
print 'The proposed voltage on pin DAC %d is less than 0 V\nThe voltage was set to 0' % (
Pin)
Voltage = 0
else:
pass
VoltageLevel = Voltage
d.getFeedback(
u3.DAC16(Dac=Pin,
Value=d.voltageToDACBits(volts=VoltageLevel,
dacNumber=Pin,
is16Bits=True)))
else:
print('Please set some value')
import u3
d = None
d = u3.U3()
d.debug = True
Volts = 2
bits = d.voltageToDACBits(volts = Volts, dacNumber = 0, is16Bits = True)
Sx = u3.DAC16(0, bits)
Sy = u3.DAC16(1, bits)
channels = [Sx, Sy]
for channel in channels:
d.getFeedback(channel, bits)
class vOutU3(u3.DAC16):
def __init__(self, Value):
DAC16.__init(self, 0, Value)
u3.DAC16__init__(self, Dac, Value)
Bits = self.voltageToDACBits(volts = Volts, dacNumber=0, is16Bits = True)
def write(self, Volts):
bits = d.voltageToDACBits(Volts, channel, is16Bits = True)
def DisconnectCharger(labJackHandle): dacCode = labJackHandle.voltageToDACBits(SWITCH_GATE_OFF_VOLTAGE, is16Bits=True) labJackHandle.getFeedback(u3.DAC16(SWITCHING_DAC_NUMBER, dacCode))
def AnalogOutputOneGiveVoltageProperty(ConfigList=[],
PropertyChanged=None,
Voltage=None):
'''
Desc: Sets voltage on a particular pin with particular property to the configured level.
The pin is identified with the property given in the configuration file, while the voltage is set from the keyboard.
Ex:
>>> LJU3HV.AnalogOutput(ConfigList=LJU3HV.ReadConfiguration(), PropertyChanged=FirstValve, Voltage=2.50)
""" the following element of LJU3HV.ReadConfiguration() is considered: ['AO0', 'Property:FirstValve', 'Unit:', 'P_min:50', 'P_max:100', 'P_current:50', 'V_min[V]:1', 'V_max[V]:3', 'Bits:8', '|\n'])"""
The voltage on DAC0 is set to 2.5 V
'''
if PropertyChanged is not None:
for b in range(0, 2):
PropertyList = ConfigList[b + 8][1].split(':')
if PropertyList[1] == PropertyChanged:
#PropertyValue =float(PropertyValue)
if Voltage is not None:
VoltageLevel = Voltage
#voltage scale validation
if Voltage > 5:
print 'The proposed voltage on pin DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break #The loop must be broken
else:
pass
if Voltage < 0:
print 'The proposed voltage on pin DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if ConfigList[b + 8][8] == 'Bits:16':
d.getFeedback(
u3.DAC16(Dac=b,
Value=d.voltageToDACBits(
volts=VoltageLevel,
dacNumber=b,
is16Bits=True)))
elif ConfigList[b + 8][8] == 'Bits:8':
d.getFeedback(
u3.DAC8(Dac=b,
Value=d.voltageToDACBits(
volts=VoltageLevel,
dacNumber=b,
is16Bits=False)))
else:
pass
else:
print('Please set some value')
else:
print('Not configured properly')
def AnalogOutputOnePercentage(ConfigList=[],
PropertyChanged=None,
PercentsVoltageAvailable=None):
'''
Desc: Sets voltage on a particular pin with particular property to the configured level.
The voltage is evaluated basing on P_max, P_min, V_max, V_min and PercentsVoltageAvailable- linear calculation.
Ex:
>>> LJU3HV.AnalogOutput(ConfigList=LJU3HV.ReadConfiguration(), PropertyChanged=FirstValve, PercentsVoltageAvailable=30)
""" the following element of LJU3HV.ReadConfiguration() is considered: ['AO0', 'Property:FirstValve', 'Unit:', 'P_min:50', 'P_max:100', 'P_current:50', 'V_min[V]:1', 'V_max[V]:3', 'Bits:8', '|\n'])"""
VoltageLevel= V_min+ PercentsVoltageAvailable/100*(VoltageMax-VoltageMin)=1+80/100*(3-1)*=2.6
The voltage on DAC0 is set to 2.6 V
!!!Please note that DAC0 was chosen because of the folowing list elements : 'AO0', 'Property:FirstValve'!!!
'''
if PropertyChanged is not None:
for b in range(0, 2):
PropertyList = ConfigList[b + 8][1].split(':')
if PropertyList[1] == PropertyChanged:
#PropertyValue =float(PropertyValue)
if PercentsVoltageAvailable is not None:
VoltageMinList = ConfigList[b + 8][6].split(':')
VoltageMin = float(VoltageMinList[1])
VoltageMaxList = ConfigList[b + 8][7].split(':')
VoltageMax = float(VoltageMaxList[1])
#voltage scale validation
if VoltageMax > 5:
print 'The proposed maximal voltage on DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break #The loop must be broken
else:
pass
if VoltageMax < 0:
print 'The proposed maximal voltage on DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if VoltageMin > 5:
print 'The proposed minimal voltage on DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if VoltageMin < 0:
print 'The proposed minimal voltage on DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
VoltageLevel = VoltageMin + float(
PercentsVoltageAvailable) / 100 * (VoltageMax -
VoltageMin)
if ConfigList[b + 8][8] == 'Bits:16':
d.getFeedback(
u3.DAC16(Dac=b,
Value=d.voltageToDACBits(
volts=VoltageLevel,
dacNumber=b,
is16Bits=True)))
elif ConfigList[b + 8][8] == 'Bits:8':
d.getFeedback(
u3.DAC8(Dac=b,
Value=d.voltageToDACBits(
volts=VoltageLevel,
dacNumber=b,
is16Bits=False)))
else:
pass
else:
print('Please set some value')
else:
print('Not configured properly')
def AnalogOutputOneValue(ConfigList=[],
PropertyChanged=None,
PropertyValue=None):
'''
Desc: Sets voltage on a particular pin with particular property to the configured level.
The voltage is evaluated basing on PropertyValue, P_max, P_min, V_max, V_min - linear calculation.
Ex:
>>> LJU3HV.AnalogOutputOneValue(LJU3HV.ReadConfiguration(),
PropertyChanged=FirstValve, PropertyValue=80)
""" the following element of LJU3HV.ReadConfiguration() is considered: ['AO0', 'Property:FirstValve', 'Unit:', 'P_min:50', 'P_max:100', 'P_current:50', 'V_min[V]:0', 'V_max[V]:5', 'Bits:8', '|\n'])"""
VoltageLevel= V_min+ (PropertyValue-P_min)/(P_max-P_min)*(V_max-V_min)=0+(80-50)/(100-50)*(5-0)=3.0
The voltage on DAC0 is set to 3.0 V
!!!Please note that DAC0 was chosen because of the folowing list elements : 'AO0', 'Property:FirstValve'
and that the value of property is given by the user, not read from the file!!!.
'''
if PropertyChanged is not None:
for b in range(0, 2):
PropertyList = ConfigList[b + 8][1].split(':')
if PropertyList[1] == PropertyChanged:
#PropertyValue =float(PropertyValue)
if PropertyValue is not None:
P_minList = ConfigList[b + 8][3].split(
':') #trick with splitting
P_min = float(P_minList[1])
P_maxList = ConfigList[b + 8][4].split(
':') #trick with splitting
P_max = float(P_maxList[1])
VoltageMinList = ConfigList[b + 8][6].split(':')
VoltageMin = float(VoltageMinList[1])
VoltageMaxList = ConfigList[b + 8][7].split(':')
VoltageMax = float(VoltageMaxList[1])
#voltage scale validation
if VoltageMax > 5:
print 'The proposed maximal voltage on DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break #The loop must be broken
else:
pass
if VoltageMax < 0:
print 'The proposed maximal voltage on DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if VoltageMin > 5:
print 'The proposed minimal voltage on DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if VoltageMin < 0:
print 'The proposed minimal voltage on DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
VoltageLevel = VoltageMin + (PropertyValue - P_min) / (
P_max - P_min) * (VoltageMax - VoltageMin)
print VoltageLevel
#checking if P is within the range, if not the value must be reassigned
if PropertyValue > P_max:
print 'The given value corresponding to DAC %d is greater than the maximal one\nThe voltage was set to Vmax' % (
b)
VoltageLevel = VoltageMax
else:
pass
if PropertyValue < P_min:
print 'The set value corresponding to DAC %d is smaller than the minimal one\nThe voltage was set to Vmin' % (
b)
VoltageLevel = VoltageMin
else:
pass
if ConfigList[b + 8][8] == 'Bits:16':
d.getFeedback(
u3.DAC16(Dac=b,
Value=d.voltageToDACBits(
volts=VoltageLevel,
dacNumber=b,
is16Bits=True)))
elif ConfigList[b + 8][8] == 'Bits:8':
d.getFeedback(
u3.DAC8(Dac=b,
Value=d.voltageToDACBits(
volts=VoltageLevel,
dacNumber=b,
is16Bits=False)))
else:
pass
else:
print('Please set some value')
else:
print('Not configured properly')
def AnalogOutput(ConfigList=[]):
'''
Desc: Sets voltage on DAC0 and DAC1 as configured - the voltage is evaluated basing on
P_current, P_max, P_min, V_max, V_min -> linear calculation.
Ex:
>>> LJU3HV.AnalogOutput(ConfigList=LJU3HV.ReadConfiguration())
""" where LJU3HV.ReadConfiguration()[8]==['AO0', 'Property:Valve', 'Unit:', 'P_min:0', 'P_max:100', 'P_current:50', 'V_min[V]:0', 'V_max[V]:5', 'Bits:8', '|\n'])"""
VoltageLevel= V_min+ (P_current-P_min)/(P_max-P_min)*(V_max-V_min)=0+(50-0)/(100-0)*(5-0)2.5
The voltage on DAC0 is set to 2.5 V.
'''
VoltageMinList = []
VoltageMaxList = []
P_minList = []
P_maxList = []
P_realList = []
for b in range(0, 2):
P_minList.append(ConfigList[b + 8][3].split(
':')) #trick with splitting and the convertion to number
P_min = float(P_minList[b][1])
P_maxList.append(ConfigList[b + 8][4].split(':'))
P_max = float(P_maxList[b][1])
P_realList.append(ConfigList[b + 8][5].split(':'))
P_real = float(P_realList[b][1])
VoltageMinList.append(ConfigList[b + 8][6].split(':'))
VoltageMin = float(VoltageMinList[b][1])
VoltageMaxList.append(ConfigList[b + 8][7].split(':'))
VoltageMax = float(VoltageMaxList[b][1])
#voltage scale validation
if VoltageMax > 5:
print 'The proposed maximal voltage on DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break #The loop must be broken
else:
pass
if VoltageMax < 0:
print 'The proposed maximal voltage on DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if VoltageMin > 5:
print 'The proposed minimal voltage on DAC %d is greater than 5 V\nThe voltage cannot be set' % (
b)
break
else:
pass
if VoltageMin < 0:
print 'The proposed minimal voltage on DAC %d is less than 0 V\nThe voltage cannot be set' % (
b)
break
else:
pass
VoltageLevel = VoltageMin + (P_real - P_min) / (P_max - P_min) * (
VoltageMax - VoltageMin)
#checking whether P is within the range, if not the value must be reassigned
if P_real > P_max:
print 'The set value corresponding to DAC %d is greater than the maximal one\nThe voltage was set to Vmax' % (
b)
VoltageLevel = VoltageMax
else:
pass
if P_real < P_min:
print 'The set value corresponding to DAC %d is smaller than the minimal one\nThe voltage was set to Vmin' % (
b)
VoltageLevel = VoltageMin
else:
pass
if ConfigList[b + 8][8] == 'Bits:16':
#Because of the error
if VoltageLevel == 0:
d.getFeedback(
u3.DAC8(Dac=b,
Value=d.voltageToDACBits(volts=VoltageLevel,
dacNumber=b,
is16Bits=False)))
else:
d.getFeedback(
u3.DAC16(Dac=b,
Value=d.voltageToDACBits(volts=VoltageLevel,
dacNumber=b,
is16Bits=True)))
elif ConfigList[b + 8][8] == 'Bits:8':
d.getFeedback(
u3.DAC8(Dac=b,
Value=d.voltageToDACBits(volts=VoltageLevel,
dacNumber=b,
is16Bits=False)))
else:
pass
