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 #ifndef INCLUDED_GR_CHECK_COUNTING_S_H 00023 #define INCLUDED_GR_CHECK_COUNTING_S_H 00024 00025 #include <gr_core_api.h> 00026 #include <gr_sync_block.h> 00027 00028 class gr_check_counting_s; 00029 typedef boost::shared_ptr<gr_check_counting_s> gr_check_counting_s_sptr; 00030 00031 GR_CORE_API gr_check_counting_s_sptr gr_make_check_counting_s (bool do_32bit=false); 00032 00033 /*! 00034 * \brief sink that checks if its input stream consists of a counting sequence. 00035 * \param do_32bit expect an interleaved 32 bit counter in stead of 16 bit counter (default false) 00036 * \ingroup sink_blk 00037 * 00038 * This sink is typically used to test the USRP "Counting Mode" or "Counting mode 32 bit". 00039 */ 00040 class GR_CORE_API gr_check_counting_s : public gr_sync_block 00041 { 00042 friend GR_CORE_API gr_check_counting_s_sptr gr_make_check_counting_s (bool do_32bit); 00043 00044 enum state { 00045 SEARCHING, // searching for synchronization 00046 LOCKED // is locked 00047 }; 00048 00049 state d_state; 00050 unsigned int d_history; // bitmask of decisions 00051 unsigned short d_current_count; 00052 unsigned int d_current_count_32bit; 00053 00054 long d_total_errors; 00055 long d_total_shorts; 00056 bool d_do_32bit; 00057 00058 gr_check_counting_s (bool do_32bit); 00059 00060 void enter_SEARCHING (); 00061 void enter_LOCKED (); 00062 00063 void right (){ 00064 d_history = (d_history << 1) | 0x1; 00065 } 00066 00067 void wrong (){ 00068 d_history = (d_history << 1) | 0x0; 00069 d_total_errors++; 00070 } 00071 00072 bool right_three_times () { return (d_history & 0x7) == 0x7; } 00073 bool wrong_three_times () { return (d_history & 0x7) == 0x0; } 00074 00075 void log_error (unsigned short expected, unsigned short actual); 00076 void log_error_32bit (unsigned int expected, unsigned int actual); 00077 00078 int check_32bit (int noutput_items, unsigned short * in); 00079 int check_16bit (int noutput_items, unsigned short * in); 00080 00081 public: 00082 00083 int work (int noutput_items, 00084 gr_vector_const_void_star &input_items, 00085 gr_vector_void_star &output_items); 00086 }; 00087 00088 00089 #endif /* INCLUDED_GR_CHECK_COUNTING_S_H */