diff options
author | Piotr Krysik <ptrkrysik@gmail.com> | 2017-11-29 16:39:22 +0100 |
---|---|---|
committer | Piotr Krysik <ptrkrysik@gmail.com> | 2017-11-29 16:39:22 +0100 |
commit | 0ba1543f8808a7b966896246b0c1028fc3ec8d4e (patch) | |
tree | d7a03ab811d627dd592e3fcec39b8bd6ba75a110 /lib | |
parent | 4f814c7051520cbdb371405eef7247ac0336004e (diff) |
Added a block for generating Access Bursts
Diffstat (limited to 'lib')
-rw-r--r-- | lib/transmitter/CMakeLists.txt | 1 | ||||
-rw-r--r-- | lib/transmitter/gen_test_ab_impl.cc | 107 | ||||
-rw-r--r-- | lib/transmitter/gen_test_ab_impl.h | 47 |
3 files changed, 155 insertions, 0 deletions
diff --git a/lib/transmitter/CMakeLists.txt b/lib/transmitter/CMakeLists.txt index c61654a..eb53162 100644 --- a/lib/transmitter/CMakeLists.txt +++ b/lib/transmitter/CMakeLists.txt @@ -20,4 +20,5 @@ add_sources( txtime_setter_impl.cc preprocess_tx_burst_impl.cc + gen_test_ab_impl ) diff --git a/lib/transmitter/gen_test_ab_impl.cc b/lib/transmitter/gen_test_ab_impl.cc new file mode 100644 index 0000000..66873db --- /dev/null +++ b/lib/transmitter/gen_test_ab_impl.cc @@ -0,0 +1,107 @@ +/* -*- c++ -*- */ +/* @file + * @author Piotr Krysik <ptrkrysik@gmail.com> + * @section LICENSE + * + * Gr-gsm is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * Gr-gsm is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with gr-gsm; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <gnuradio/io_signature.h> +#include <grgsm/gsmtap.h> +#include <grgsm/gsm_constants.h> +#include "gen_test_ab_impl.h" + +namespace gr { + namespace gsm { + + static uint8_t rach_synch_seq[] = { + 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, + 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0 , + 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, + }; + +// static uint8_t AB[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; +// static uint8_t AB[] = {0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1}; +// static uint8_t AB[] = { 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1}; + static uint8_t AB[] = {1,1,1,1,1,1,1,1,1,0,1,1,0,1,0,0,1,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,1,0,1,0,1,0,1,1,1,0,0,0,0,1,1,1,0,0,1,0,0,0,1,0,1,0,1,0,0,1,0,1,0,1,1,0,1,1,0,0,1,0,1,0,0,0,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 + ,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}; + gen_test_ab::sptr + gen_test_ab::make() + { + return gnuradio::get_initial_sptr + (new gen_test_ab_impl()); + } + + /* + * The private constructor + */ + gen_test_ab_impl::gen_test_ab_impl() + : gr::block("gen_test_ab", + gr::io_signature::make(0, 0, 0), + gr::io_signature::make(0, 0, 0)) + { + message_port_register_in(pmt::intern("bursts_in")); + message_port_register_out(pmt::intern("bursts_out")); + + set_msg_handler(pmt::intern("bursts_in"), boost::bind(&gen_test_ab_impl::generate_ab, this, _1)); + } + + /* + * Our virtual destructor. + */ + gen_test_ab_impl::~gen_test_ab_impl() + { + } + + void gen_test_ab_impl::generate_ab(pmt::pmt_t burst) + { + uint8_t buf[sizeof(gsmtap_hdr) + 148]; + struct gsmtap_hdr *tap_header = (struct gsmtap_hdr *) buf; + uint8_t *access_burst = buf + sizeof(gsmtap_hdr); + +// memset(access_burst, 0, 8); /* TB */ +// memcpy(access_burst + 8, rach_synch_seq, 41); /* sync seq */ +// memcpy(access_burst + 49, AB, 36); /* payload */ +// memset(access_burst + 85, 0, 63); /* TB + GP */ + + memcpy(access_burst, AB, 148); + + gsmtap_hdr * header = (gsmtap_hdr *)(pmt::blob_data(pmt::cdr(burst))); + uint32_t frame_nr = be32toh(header->frame_number); + frame_nr = (frame_nr+51)% (26*51*2048); + + tap_header->version = GSMTAP_VERSION; + tap_header->hdr_len = sizeof(gsmtap_hdr) / 4; + tap_header->type = GSMTAP_TYPE_UM_BURST; + tap_header->sub_type = GSMTAP_BURST_ACCESS; + tap_header->frame_number = htobe32(frame_nr); + tap_header->timeslot = header->timeslot; + tap_header->arfcn = 0; + + pmt::pmt_t blob = pmt::make_blob(buf, sizeof(gsmtap_hdr) + BURST_SIZE); + pmt::pmt_t pdu_header = pmt::make_dict(); + + pmt::pmt_t new_msg = pmt::cons(pdu_header, blob); + message_port_pub(pmt::intern("bursts_out"), new_msg); + } + } /* namespace gsm */ +} /* namespace gr */ + diff --git a/lib/transmitter/gen_test_ab_impl.h b/lib/transmitter/gen_test_ab_impl.h new file mode 100644 index 0000000..366481e --- /dev/null +++ b/lib/transmitter/gen_test_ab_impl.h @@ -0,0 +1,47 @@ +/* -*- c++ -*- */ +/* @file + * @author Piotr Krysik <ptrkrysik@gmail.com> + * @section LICENSE + * + * Gr-gsm is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * Gr-gsm is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with gr-gsm; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + * + */ + +#ifndef INCLUDED_GSM_GEN_TEST_AB_IMPL_H +#define INCLUDED_GSM_GEN_TEST_AB_IMPL_H + +#include <grgsm/transmitter/gen_test_ab.h> +#include <grgsm/misc_utils/time_spec.h> +#include <grgsm/misc_utils/fn_time.h> + +namespace gr { + namespace gsm { + + class gen_test_ab_impl : public gen_test_ab + { + private: + void generate_ab(pmt::pmt_t burst); + + public: + gen_test_ab_impl(); + ~gen_test_ab_impl(); + }; + + } // namespace gsm +} // namespace gr + +#endif /* INCLUDED_GSM_GEN_TEST_AB_IMPL_H */ + |