Create usbdrdaqScopeBlockExample.py

Author: neil.hamilton

usbdrdaqExamples/usbdrdaqScopeBlockExample.py

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+#
+# Copyright (C) 2020 Pico Technology Ltd. See LICENSE file for terms.
+#
+# USBDRDAQ SCOPE BLOCK MODE EXAMPLE
+# This example opens a UsbDrDaq driver device, sets up the scope channel and a trigger then collects a single block of data.
+# This data is then plotted as mV against time in ns.
+
+import ctypes
+import time
+from picosdk.usbDrDaq import usbDrDaq as drDaq
+import numpy as np
+import matplotlib.pyplot as plt
+from picosdk.functions import adc2mV, assert_pico_ok
+
+# Create chandle and status ready for use
+status = {}
+chandle = ctypes.c_int16()
+
+# Opens the device
+status["openunit"] = drDaq.UsbDrDaqOpenUnit(ctypes.byref(chandle))
+assert_pico_ok(status["openunit"])
+
+# Disconnect the scope
+# handle = chandle
+status["close"] = drDaq.UsbDrDaqCloseUnit(chandle)
+assert_pico_ok(status["close"])
+
+# Display status returns
+print(status)