Create pl1000Examples/pl1000StreamingModeExample.py

Author: neil.hamilton

pl1000Examples/pl1000StreamingModeExample.py

@@ -0,0 +1,50 @@
+#
+# Copyright (C) 2019 Pico Technology Ltd. See LICENSE file for terms.
+#
+# PL1000 SINGLE MODE EXAMPLE
+# This example opens a pl1000 device, sets up the device for capturing data from channel 1.
+# Then this example collect a sample from channel 1 and displays it on the console.
+
+import ctypes
+import numpy as np
+from picosdk.pl1000 import pl1000 as pl
+import matplotlib.pyplot as plt
+from picosdk.functions import adc2mV, assert_pico_ok
+from time import sleep
+
+# Create chandle and status ready for use
+chandle = ctypes.c_int16()
+status = {}
+
+# open PicoLog 1000 device
+status["openUnit"] = pl.pl1000OpenUnit(ctypes.byref(chandle))
+assert_pico_ok(status["openUnit"])
+
+# set sampling interval
+usForBlock = ctypes.c_uint32(10000000)
+noOfValues = ctypes.c_uint32(100000000)
+channels = ctypes.c_int16(1)
+
+status["setInterval"] = pl.pl1000SetInterval(chandle, ctypes.byref(usForBlock), noOfValues, ctypes.byref(channels), 1)
+assert_pico_ok(status["setInterval"])
+
+# start streaming
+mode = pl.PL1000_BLOCK_METHOD["BM_STREAM"]
+status["run"] = pl.pl1000Run(chandle, noOfValues, mode)
+assert_pico_ok(status["run"])
+
+sleep(5)
+
+values = (ctypes.c_uint16 * noOfValues)()
+oveflow = ctypes.c_uint16()
+
+status["getValues"] = pl.pl1000GetValues(chandle, ctypes.byref(values), ctypes.byref(noOfValues), ctypes.byref(oveflow), None)
+assert_pico_ok(status["getValues"])
+
+
+# close PicoLog 1000 device
+status["closeUnit"] = pl.pl1000CloseUnit(chandle)
+assert_pico_ok(status["closeUnit"])
+
+# display status returns
+print(status)