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#!/usr/bin/env python
from gnuradio import gr, gr_unittest
from gnuradio import blocks
import gnuradio.dab as grdab
class qa_fractional_interpolator_triggered_update(gr_unittest.TestCase):
"""
@brief Module test for the fractional interpolator block with triggered update.
This class implements a test bench to verify the corresponding C++ class.
"""
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001_fractional_interpolator_triggered_update_cc(self):
src_data = [0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1]
trigger = [0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
expected_result = [3,4,5,6,7,8,0,2,4] # not sure why the values at the start and end are missing, but the trigger works nicely ..
expected_result = [x + 0j for x in expected_result]
src0 = blocks.vector_source_c(src_data)
src1 = blocks.vector_source_b(trigger)
fractional_interpolator_triggered_update = grdab.fractional_interpolator_triggered_update_cc(0,1)
fractional_interpolator_triggered_update.set_interp_ratio(2)
dst = blocks.vector_sink_c()
self.tb.connect(src0, (fractional_interpolator_triggered_update,0))
self.tb.connect(src1, (fractional_interpolator_triggered_update,1))
self.tb.connect(fractional_interpolator_triggered_update, dst)
self.tb.run()
result_data = dst.data()
# print src_data
# print expected_result
# print result_data
self.assertComplexTuplesAlmostEqual(expected_result, result_data, 6)
if __name__ == '__main__':
gr_unittest.main()
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