Create frequency sweep example for picosynth

Author: neil.hamilton

picosynthExamples/picosynthFrequencySweepExample.py

@@ -0,0 +1,56 @@
+#
+# Copyright (C) 2022 Pico Technology Ltd. See LICENSE file for terms.
+#
+# PicoSource AS108 Agile Synthesizer Example
+# This example demonstrates how to use the PicoSource AS108 picosynth driver API functions to set up the signal generator to output a frequency sweep.
+#
+
+import ctypes
+from picosdk.picosynth import picosynth as ps
+import time
+from picosdk.functions import assert_pico_ok
+
+# setup needed variables
+status = {}
+chandle = ctypes.c_uint32()
+
+# open AS108 device
+status["openunit"] = ps.picosynthOpenUnit(ps.PICO_SOURCE_MODEL["PICO_SYNTH"], ctypes.byref(chandle),0)
+assert_pico_ok(status["openunit"])
+
+# set up a frequency sweep
+# handle = chandle
+startFreqHz = 300000 #Hz
+stopFreqHz = 1000000 #Hz
+startLevel = 2
+stopLevel = 2
+levelUnit = 1 # VoltsPkToPk
+dwellTimeUs = 100
+pointsInSweep = 1000
+mode = 0 #SweepAndFlyback
+triggerMode = 0 # InternalTrigger
+
+status["setFrequencyAndLevelSweep"] = ps.picosynthSetFrequencyAndLevelSweep(chandle,startFreqHz,stopFreqHz,startLevel,stopLevel,levelUnit,dwellTimeUs,pointsInSweep,mode,triggerMode)
+assert_pico_ok(status["setFrequencyAndLevelSweep"])
+
+time.sleep(10)
+
+# close AS108 device
+status["closeunit"] = ps.picosynthCloseUnit(chandle)
+assert_pico_ok(status["closeunit"])
+
+time.sleep(20)
+
+# open AS108 device
+status["openunit"] = ps.picosynthOpenUnit(ps.PICO_SOURCE_MODEL["PICO_SYNTH"], ctypes.byref(chandle),0)
+assert_pico_ok(status["openunit"])
+
+# set output off
+status["setOutputOff"] = ps.picosynthSetOutputOff(chandle)
+
+# close AS108 device
+status["closeunit"] = ps.picosynthCloseUnit(chandle)
+assert_pico_ok(status["closeunit"])
+
+# Displays the status returns
+print(status)