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# Generator.py - for LibTiePie 0.5+
#
# This example generates a 50 Hz sine waveform, 4 Vpp, 100 periods.
#
# Find more information on http://www.tiepie.com/LibTiePie .
from __future__ import print_function
import time
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 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_BURST_COUNT:
break
else:
gen = None
if gen:
try:
# Set signal type:
gen.signal_type = libtiepie.ST_SINE
# Set frequency:
gen.frequency = 50 # 50 Hz
# Set amplitude:
gen.amplitude = 2 # 2 V
# Set offset:
gen.offset = 0 # 0 V
# Set mode:
gen.mode = libtiepie.GM_BURST_COUNT
# Set burst count:
gen.burst_count = 100 # 100 periods
# Enable output:
gen.output_on = True
# Print generator info:
print_device_info(gen)
# Start signal burst:
gen.start()
# Wait for burst to complete:
while gen.is_burst_active:
time.sleep(0.01) # 10 ms delay, to save CPU time.
# 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 burst support!')
sys.exit(1)
sys.exit(0)
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