104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/* -*- c++ -*- */
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/*
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* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
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*
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* Copyright (C) 2018, Libre Space Foundation <http://librespacefoundation.org/>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gnuradio/io_signature.h>
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#include "fox_telem_mm_impl.h"
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#include <satnogs/log.h>
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namespace gr {
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namespace satnogs {
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/**
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* AMSAT FOX spacecraft IDs
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*/
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const uint8_t fox_telem_mm_impl::fox_id[] = {0x1, 0x2, 0x3};
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fox_telem_mm::sptr
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fox_telem_mm::make()
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{
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return gnuradio::get_initial_sptr
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(new fox_telem_mm_impl());
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}
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/*
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* The private constructor
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*/
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fox_telem_mm_impl::fox_telem_mm_impl()
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: gr::block("fox_telem_mm",
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gr::io_signature::make(0, 0, 0),
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gr::io_signature::make(0, 0, 0)),
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/* 6 header, 58 payload */
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d_frame_size (6 + 58)
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{
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message_port_register_in (pmt::mp ("in"));
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message_port_register_out (pmt::mp ("raw"));
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set_msg_handler (
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pmt::mp ("in"),
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boost::bind (&fox_telem_mm_impl::process_frame, this, _1));
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}
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static inline bool
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is_spacecraft_valid(uint8_t id)
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{
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for (size_t i = 0; i < sizeof(fox_telem_mm_impl::fox_id); i++) {
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if (fox_telem_mm_impl::fox_id[i] == id) {
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return true;
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}
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}
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return false;
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}
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void
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fox_telem_mm_impl::process_frame (pmt::pmt_t msg)
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{
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uint8_t fox_id;
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const uint8_t *data = (const uint8_t *) pmt::blob_data(msg);
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size_t data_len = pmt::blob_length(msg);
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if(data_len != 223) {
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LOG_ERROR("Invalid message");
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}
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/* Check the spacecraft ID */
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fox_id = data[0] & 0x3;
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if(!is_spacecraft_valid(fox_id)) {
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return;
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}
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message_port_pub(pmt::mp("raw"), pmt::make_blob(data, d_frame_size));
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}
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/*
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* Our virtual destructor.
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*/
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fox_telem_mm_impl::~fox_telem_mm_impl()
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{
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}
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} /* namespace satnogs */
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} /* namespace gr */
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