def initScope(self):
self.status["openunit"] = ps.ps5000aOpenUnit(ctypes.byref(
self.chandle), None, self.resolution) #sets the chandle
try:
assert_pico_ok(self.status["openunit"])
except: # PicoNotOkError:
powerStatus = self.status["openunit"]
if powerStatus == 286:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
self.chandle, powerStatus)
elif powerStatus == 282:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
self.chandle, powerStatus)
else:
raise
assert_pico_ok(self.status["changePowerSource"])
#find out the ADC range for this resolution
self.status["maximumValue"] = ps.ps5000aMaximumValue(
self.chandle, ctypes.byref(self.maxADC))
assert_pico_ok(self.status["maximumValue"])
def change_powersupply(self, state):
if state == 286: # USB3_0_DEVICE_NON_USB3_0_PORT (Does this work?)
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(self.chandle, state) # Change powersource to USB2
elif state == 282: # POWER_SUPPLY_NOT_CONNECTED
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(self.chandle, state) # Change powersource to USB3
else:
self.status["changePowerSource"] = state
assert_pico_ok(self.status["changePowerSource"]) # Check whether the powerchange was successful
def __open__(self):
# set resolution
res = ps.PS5000A_DEVICE_RESOLUTION["PS5000A_DR_"+self.settings['resolution']]
# Returns handle to chandle for use in future API functions
self.status["openunit"] = ps.ps5000aOpenUnit(ctypes.byref(self.chandle), None, res)
try:
assert_pico_ok(self.status["openunit"])
except: # PicoNotOkError:
powerStatus = self.status["openunit"]
if powerStatus == 286:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(self.chandle, powerStatus)
elif powerStatus == 282:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(self.chandle, powerStatus)
else:
raise
assert_pico_ok(self.status["changePowerSource"])
def makeConnection(self):
self.status["openunit"] = ps.ps5000aOpenUnit(
ctypes.byref(self.chandle), None, self.resolution)
try:
assert_pico_ok(self.status["openunit"])
except: # PicoNotOkError:
self.powerStatus = self.status["openunit"]
if self.powerStatus == 286:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
self.chandle, self.powerStatus)
elif self.powerStatus == 282:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
self.chandle, self.powerStatus)
else:
raise
assert_pico_ok(self.status["changePowerSource"])
def openDevice(self):
self.resolution = '8BIT'
_resolution = ps.PS5000A_DEVICE_RESOLUTION['PS5000A_DR_' +
self.resolution.upper()]
self.status['openunit'] = ps.ps5000aOpenUnit(
ctypes.byref(self.chandle), None, _resolution)
try:
assert_pico_ok(self.status['openunit'])
return 0
except:
powerStatus = self.status["openunit"]
if powerStatus == 286:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
chandle, powerStatus)
elif powerStatus == 282:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
chandle, powerStatus)
else:
# raise
return -1
from picosdk.functions import assert_pico_ok
status = {}
chandle = ctypes.c_int16()
# Open the device
status["openUnit"] = ps.ps5000aOpenUnit(ctypes.byref(chandle), None, 1)
try:
assert_pico_ok(status["openUnit"])
except: # PicoNotOkError:
powerStatus = status["openUnit"]
if powerStatus == 286:
status["changePowerSource"] = ps.ps5000aChangePowerSource(
chandle, powerStatus)
elif powerStatus == 282:
status["changePowerSource"] = ps.ps5000aChangePowerSource(
chandle, powerStatus)
else:
raise
assert_pico_ok(status["changePowerSource"])
# Output a sine wave with peak-to-peak voltage of 2 V and frequency of 10 kHz
# handle = chandle
# offsetVoltage = 0
# pkToPk = 2000000
# waveType = ctypes.c_int16(0) = PS5000A_SINE
# startFrequency = 10 kHz
# stopFrequency = 10 kHz
status = {}
chandle = ctypes.c_int16()
# Opens the device/s
status["openunit"] = ps.ps5000aOpenUnit(ctypes.byref(chandle), None, ps.PS5000A_DEVICE_RESOLUTION["PS5000A_DR_8BIT"])
try:
assert_pico_ok(status["openunit"])
except:
# powerstate becomes the status number of openunit
powerstate = status["openunit"]
# If powerstate is the same as 282 then it will run this if statement
if powerstate == 282:
# Changes the power input to "PICO_POWER_SUPPLY_NOT_CONNECTED"
status["ChangePowerSource"] = ps.ps5000aChangePowerSource(chandle, 282)
# If the powerstate is the same as 286 then it will run this if statement
elif powerstate == 286:
# Changes the power input to "PICO_USB3_0_DEVICE_NON_USB3_0_PORT"
status["ChangePowerSource"] = ps.ps5000aChangePowerSource(chandle, 286)
else:
raise
assert_pico_ok(status["ChangePowerSource"])
digital_port0 = ps.PS5000A_CHANNEL["PS5000A_DIGITAL_PORT0"]
# Set up digital port
# handle = chandle
# channel = ps5000a_DIGITAL_PORT0 = 0x80
# enabled = 1
def __init__(self):
self.status = {} # Exmpty dictionary
self.status['running'] = False
self.status['status'] = {} # Empty dictionary to hold status results
self.chandle = ctypes.c_int16() # Stores handle for the Picotech HW
self.maxADC = ctypes.c_int16() # Stores a reference to the max ADC
self.resolution = None
self.resolutionString = ''
self.possibleResValues = {
"8-bit": "PS5000A_DR_8BIT",
"12-bit": "PS5000A_DR_12BIT",
"14-bit": "PS5000A_DR_14BIT",
"15-bit": "PS5000A_DR_15BIT",
"16-bit": "PS5000A_DR_16BIT"
}
# MS (2020.10.22): set the possible sampling modes
self.samplingMode = None
self.possibleSamplingModes = {'Rapid Block Mode': 'rapid_block'}
# MS (2020.10.22): set the possible voltage scale
self.rangeScale = None
self.possibleRanges = {
'10 mV': {
'psRANGE': 'PS5000A_10MV',
'intRange': 10
},
'20 mV': {
'psRANGE': 'PS5000A_20MV',
'intRange': 20
},
'50 mV': {
'psRANGE': 'PS5000A_50MV',
'intRange': 50
},
'100 mV': {
'psRANGE': 'PS5000A_100MV',
'intRange': 100
},
'200 mV': {
'psRANGE': 'PS5000A_200MV',
'intRange': 200
},
'500 mV': {
'psRANGE': 'PS5000A_500MV',
'intRange': 500
},
'1 V': {
'psRANGE': 'PS5000A_1V',
'intRange': 1000
},
'2 V': {
'psRANGE': 'PS5000A_2V',
'intRange': 2000
},
'5 V': {
'psRANGE': 'PS5000A_5V',
'intRange': 5000
},
'10 V': {
'psRANGE': 'PS5000A_10V',
'intRange': 10000
},
'20 V': {
'psRANGE': 'PS5000A_20V',
'intRange': 20000
},
}
self.possibleWaveforms = {
'1': 1,
'2': 2,
'3': 3,
'10': 10,
'30': 30,
}
# channelInputRanges = [10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000]
self.downsampling = False
self.downsamplingRatio = 1
# Create chandle and status ready for use
self.status["openunit"] = ps.ps5000aOpenUnit(
ctypes.byref(self.chandle), None, 1)
try:
assert_pico_ok(self.status["openunit"])
except: # PicoNotOkError:
powerStatus = self.status["openunit"]
if self.powerStatus == 286:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
self.chandle, powerStatus)
elif self.powerStatus == 282:
self.status["changePowerSource"] = ps.ps5000aChangePowerSource(
self.chandle, powerStatus)
else:
raise
assert_pico_ok(self.status["changePowerSource"])