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# GeneratorGatedBurst.py - for LibTiePie 0.5+
#
# This example generates a 10 kHz square waveform, 10 Vpp when the external trigger input is active.
#
# Find more information on http://www.tiepie.com/LibTiePie .
from __future__ import print_function
import sys
import libtiepie
from printinfo import *
# Print library info:
print_library_info()
# Search for devices:
libtiepie.device_list.update()
# Try to open a generator with gated burst support:
gen = None
for item in libtiepie.device_list:
if item.can_open(libtiepie.DEVICETYPE_GENERATOR):
gen = item.open_generator()
if (gen.modes_native & libtiepie.GM_GATED_PERIODS) and len(gen.trigger_inputs) > 0:
break
else:
gen = None
if gen:
try:
# Set signal type:
gen.signal_type = libtiepie.ST_SQUARE
# Set frequency:
gen.frequency = 10e3 # 10 kHz
# Set amplitude:
gen.amplitude = 5 # 5V
# Set offset:
gen.offset = 0 # 0 V
# Set mode:
gen.mode = libtiepie.GM_GATED_PERIODS
# Locate trigger input:
trigger_input = gen.trigger_inputs.get_by_id(libtiepie.TIID_EXT1)
if trigger_input is None:
raise Exception('Unknown trigger input!')
# Enable trigger input:
trigger_input.enabled = True
# Enable output:
gen.output_on = True
# Print generator info:
print_device_info(gen)
# Start signal burst:
gen.start()
# Wait for keystroke:
print('Press Enter to stop signal generation...')
if sys.version_info < (3, 0): # Python 2.x
raw_input()
else: # Python 3.x
input()
# Stop generator:
gen.stop()
# Disable output:
gen.output_on = False
except Exception as e:
print('Exception: ' + e.message)
sys.exit(1)
# Close generator:
del gen
else:
print('No generator available with gated burst support!')
sys.exit(1)
sys.exit(0)
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