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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2020 Daniel Estevez <daniel@destevez.net>
#
# This file is part of gr-satellites
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
from gnuradio import gr, blocks, gr_unittest
import numpy as np
import pmt
# bootstrap satellites module, even from build dir
try:
import python as satellites
except ImportError:
pass
else:
import sys
sys.modules['satellites'] = satellites
from satellites import hdlc_framer, hdlc_deframer
from satellites.grtypes import byte_t
class qa_hdlc(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_framer_deframer(self):
"""Connects an HDLC framer to a deframer and sends PDUs through"""
framer = hdlc_framer(100, 20)
deframer = hdlc_deframer(True, 10000)
pdu2tag = blocks.pdu_to_tagged_stream(byte_t)
dbg = blocks.message_debug()
self.tb.connect(pdu2tag, deframer)
self.tb.msg_connect((framer, 'out'), (pdu2tag, 'pdus'))
self.tb.msg_connect((deframer, 'out'), (dbg, 'store'))
test_size = 150
test_number_frames = 7
test_data = [bytes(np.random.randint(0, 256, test_size, dtype='uint8'))
for _ in range(test_number_frames)]
for td in test_data:
test_frame = pmt.cons(pmt.PMT_NIL,
pmt.init_u8vector(test_size, list(td)))
framer.to_basic_block()._post(pmt.intern('in'), test_frame)
framer.to_basic_block()._post(
pmt.intern('system'),
pmt.cons(pmt.intern('done'), pmt.from_long(1)))
self.tb.start()
self.tb.wait()
for j, td in enumerate(test_data):
result_data = bytes(
pmt.u8vector_elements(pmt.cdr(dbg.get_message(j))))
self.assertEqual(
td, result_data,
'HDLC deframer output does not match expected frame')
if __name__ == '__main__':
gr_unittest.run(qa_hdlc)
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