GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2004 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 51 Franklin Street, 00020 * Boston, MA 02110-1301, USA. 00021 */ 00022 00023 #ifndef INCLUDED_GR_LFSR_32K_SOURCE_S_H 00024 #define INCLUDED_GR_LFSR_32K_SOURCE_S_H 00025 00026 #include <gr_core_api.h> 00027 #include <gr_sync_block.h> 00028 #include <gri_lfsr_32k.h> 00029 00030 class gr_lfsr_32k_source_s; 00031 typedef boost::shared_ptr<gr_lfsr_32k_source_s> gr_lfsr_32k_source_s_sptr; 00032 00033 GR_CORE_API gr_lfsr_32k_source_s_sptr gr_make_lfsr_32k_source_s (); 00034 00035 /*! 00036 * \brief LFSR pseudo-random source with period of 2^15 bits (2^11 shorts) 00037 * \ingroup source_blk 00038 * 00039 * This source is typically used along with gr_check_lfsr_32k_s to test 00040 * the USRP using its digital loopback mode. 00041 */ 00042 class GR_CORE_API gr_lfsr_32k_source_s : public gr_sync_block 00043 { 00044 friend GR_CORE_API gr_lfsr_32k_source_s_sptr gr_make_lfsr_32k_source_s (); 00045 00046 00047 static const int BUFSIZE = 2048 - 1; // ensure pattern isn't packet aligned 00048 int d_index; 00049 short d_buffer[BUFSIZE]; 00050 00051 gr_lfsr_32k_source_s (); 00052 00053 public: 00054 00055 virtual int work (int noutput_items, 00056 gr_vector_const_void_star &input_items, 00057 gr_vector_void_star &output_items); 00058 }; 00059 00060 00061 #endif