[Discuss-gnuradio] Error in making OOT with python (2in-1out)port

[Ayaz Mahmud]

Hi,

 

I am trying to make a python OOT with 2 i/p & 1 o/p port.

The 1^st i/p port should act like a trigger. For example whenever a ‘1’ is found in 1^st input port, first 2 items in the list of 2^nd input port will pass through, else dropped.

 

I have written the code as follows but its giving me an error: Can you help me in finding out where is the mistake?

======================================================================

FAIL: test_001_t (__main__.qa_Detector)

----------------------------------------------------------------------

Traceback (most recent call last):

  File "qa_Detector.py", line 44, in test_001_t

    self.assertEqual(sink.data(), (1,2))

AssertionError: Tuples differ: (0.0, 0.0, 0.0, 0.0, 0.0) != (1, 2)

 

First differing element 0:

0.0

1

 

First tuple contains 3 additional elements.

First extra element 2:

0.0

 

- (0.0, 0.0, 0.0, 0.0, 0.0)

+ (1, 2)

 

----------------------------------------------------------------------

Ran 1 test in 0.003s

 

FAILED (failures=1)

 

Codes are as follows:

 

from gnuradio import gr, gr_unittest

from gnuradio import blocks

from Detector import Detector

 

 

class qa_Detector (gr_unittest.TestCase):

 

    def setUp (self):

        self.tb = gr.top_block ()

 

    def tearDown (self):

        self.tb = None

 

    def test_001_t (self):

                src0 = blocks.vector_source_f([1,0,0,0,0], False)                

                src1 = blocks.vector_source_f([1,2,3,4,5], False)

                det = Detector()

                sink = blocks.vector_sink_f()

                self.tb.connect((src0, 0), (det, 0))

        self.tb.connect((src1, 0), (det, 1))

        self.tb.connect(det, sink)

                self.tb.run ()

                self.assertEqual(sink.data(), (1,2))

 

 

if __name__ == '__main__':

    gr_unittest.run(qa_Detector, "qa_Detector.xml")

 

import numpy

from gnuradio import gr

import numpy as np

 

class Detector(gr.sync_block):

    """

    docstring for block Detector

    """

    def __init__(self):

        gr.sync_block.__init__(self,

            name="Detector",

            in_sig=[numpy.float32,numpy.float32],

            out_sig=[numpy.float32])

 

    def work(self, input_items, output_items):

        in0 = input_items[0]

        in1 = input_items[1]

        out = output_items[0]

        for i in range(len(in1)):

            if in0[i] == 1:

                out = in1[i:2]

            else:

                None

        return len(output_items[0])

 

Thanks

Ayaz