def __init__(self):
# Create chandle and status ready for use
self.status = {}
self.chandle = ctypes.c_int16()
# Opens the device/s
self.status["openunit"] = ps.ps3000aOpenUnit(
ctypes.byref(self.chandle), None)
try:
assert_pico_ok(self.status["openunit"])
except:
# powerstate becomes the status number of openunit
powerstate = self.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"
self.status["ChangePowerSource"] = ps.ps3000aChangePowerSource(
self.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"
self.status["ChangePowerSource"] = ps.ps3000aChangePowerSource(
self.chandle, 286)
else:
raise
assert_pico_ok(self.status["ChangePowerSource"])
def open(self, serial=None):
"""Open the device.
:param serial: (optional) Serial number of the device
:param resolution_bits: vertical resolution in number of bits
"""
handle = ctypes.c_int16()
status = ps.ps3000aOpenUnit(ctypes.byref(handle), serial)
status_msg = PICO_STATUS_LOOKUP[status]
if status_msg == "PICO_OK":
self._handle = handle
elif status_msg == 'PICO_NOT_FOUND':
raise DeviceNotFoundError()
else:
raise PicoSDKError(f"PicoSDK returned {status_msg}")
self.set_channel('A', is_enabled=False)
self.set_channel('B', is_enabled=False)
# Setup a digital port
# Collect a block of data
# Plot data
import ctypes
from picosdk.ps3000a import ps3000a as ps
from picosdk.functions import splitMSODataFast, assert_pico_ok
import numpy as np
import matplotlib.pyplot as plt
# Gives the device a handle
status = {}
chandle = ctypes.c_int16()
# Opens the device/s
status["openunit"] = ps.ps3000aOpenUnit(ctypes.byref(chandle), None)
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.ps3000aChangePowerSource(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.ps3000aChangePowerSource(chandle, 286)