diff options
| -rw-r--r-- | src/lib/Assert.h | 65 | ||||
| -rw-r--r-- | src/lib/gsm.i | 36 | ||||
| -rw-r--r-- | src/lib/gsm_constants.h | 94 |
3 files changed, 195 insertions, 0 deletions
diff --git a/src/lib/Assert.h b/src/lib/Assert.h new file mode 100644 index 0000000..6c04f18 --- /dev/null +++ b/src/lib/Assert.h @@ -0,0 +1,65 @@ +/* +* Copyright 2008 Free Software Foundation, Inc. +* +* This software is distributed under the terms of the GNU Public License. +* See the COPYING file in the main directory for details. + + This program 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 of the License, or + (at your option) any later version. + + This program 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 this program. If not, see <http://www.gnu.org/licenses/>. + +*/ + + +#ifndef ASSERT_H +#define ASSERT_H + +#include "stdio.h" +#include <iostream> + +/**@name Macros for standard messages. */ +//@{ +#define COUT(text) { std::cout << text << std::endl; } +#define CERR(text) { std::cerr << __FILE__ << ":" << __LINE__ << ": " << text; } +#ifdef NDEBUG +#define DCOUT(text) {} +#define OBJDCOUT(text) {} +#else +#define DCOUT(text) { COUT(__FILE__ << ":" << __LINE__ << " " << text); } +#define OBJDCOUT(text) { DCOUT(this << " " << text); } +#endif +//@} + + +/** This is thrown by assert() so that gdb can catch it. */ + +class Assertion +{ + + public: + + Assertion() { + fprintf( stderr,"Try setting a breakpoint @ %s:%u.\n",__FILE__,__LINE__ ); + return; + } + +}; + +#ifdef NDEBUG +#define assert(EXPR) {}; +#else +/** This replaces the regular assert() with a C++ exception. */ +#include "stdio.h" +#define assert(E) { if (!(E)) { fprintf(stderr,"%s:%u failed assertion '%s'\n",__FILE__,__LINE__,#E); throw Assertion(); } } +#endif + +#endif diff --git a/src/lib/gsm.i b/src/lib/gsm.i new file mode 100644 index 0000000..dac7602 --- /dev/null +++ b/src/lib/gsm.i @@ -0,0 +1,36 @@ +/* -*- c++ -*- */ + +%feature("autodoc", "1"); // generate python docstrings + +%include "exception.i" +%import "gnuradio.i" // the common stuff + +%include "gsm_constants.h" + +%{ +#include "gnuradio_swig_bug_workaround.h" // mandatory bug fix +#include "gsm_receiver_cf.h" +#include <stdexcept> +#include "gsm_constants.h" +%} + +// ---------------------------------------------------------------- + +/* + * First arg is the package prefix. + * Second arg is the name of the class minus the prefix. + * + * This does some behind-the-scenes magic so we can + * access howto_square_ff from python as howto.square_ff + */ +GR_SWIG_BLOCK_MAGIC(gsm,receiver_cf); + +gsm_receiver_cf_sptr gsm_make_receiver_cf ( gr_feval_dd *tuner, int osr); + +class gsm_receiver_cf : public gr_block +{ +private: + gsm_receiver_cf ( gr_feval_dd *tuner, int osr); +}; + +// ---------------------------------------------------------------- diff --git a/src/lib/gsm_constants.h b/src/lib/gsm_constants.h new file mode 100644 index 0000000..01dfb22 --- /dev/null +++ b/src/lib/gsm_constants.h @@ -0,0 +1,94 @@ +#ifndef INCLUDED_GSM_CONSTANTS_H +#define INCLUDED_GSM_CONSTANTS_H + +#define GSM_SYMBOL_RATE (1625000.0/6.0) //symbols per second +#define GSM_SYMBOL_PERIOD (1.0/GSM_SYMBOL_RATE) //seconds per symbol + +//Burst timing +#define TAIL_BITS 3 +#define GUARD_BITS 8 //8.25 +#define DATA_BITS 58 //size of 1 data block in normal burst +#define N_TRAIN_BITS 26 +#define N_SYNC_BITS 64 +#define USEFUL_BITS 142 //(2*DATA_BITS + N_TRAIN_BITS ) +#define FCCH_BITS USEFUL_BITS + +#define TS_BITS (TAIL_BITS+USEFUL_BITS+TAIL_BITS+GUARD_BITS) //a full TS (156) +#define TS_PER_FRAME 8 +#define FRAME_BITS (TS_PER_FRAME * TS_BITS + 2) // +2 for extra 8*0.25 guard bits +#define FCCH_POS TAIL_BITS +#define SYNC_POS 39 +#define TRAIN_POS 58 + +#define FCCH_HITS_NEEDED (USEFUL_BITS - 4) +#define FCCH_MAX_MISSES 2 + +static const int SYNC_BITS[] = { + 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, + 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, + 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, + 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1 +}; + +// Sync : .+...++.+..+++.++++++.++++++....++.+..+.+.+++.+.+...+..++++..+.. +// Diff Encoded Sync: .++..+.+++.+..++.....++.....+...+.+++.+++++..+++++..++.+...+.++. + +#define TSC0 0 +#define TSC1 1 +#define TSC2 2 +#define TSC3 3 +#define TSC4 4 +#define TSC5 5 +#define TSC6 6 +#define TSC7 7 +#define TS_FCCH 8 +#define TS_DUMMY 9 + +static const unsigned char train_seq[10][N_TRAIN_BITS] = { + {0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1}, + {0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1}, + {0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0}, + {0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0}, + {0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1}, + {0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0}, + {1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1}, + {1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 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}, //#9 FCCH ;-) + {0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1} // DUMMY +}; + +//Dummy burst 0xFB 76 0A 4E 09 10 1F 1C 5C 5C 57 4A 33 39 E9 F1 2F A8 +static const unsigned char dummy_burst[] = { + 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, + 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, + 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, + 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, + 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, + 0, 1, 1, 1, 1, 1, 0, 0, + + 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, + 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, + 0, 0, 0, 1, 0, 1, + + 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, + 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, + 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, + 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, + 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, + 1, 1, 1, 0, 1, 0, 1, 0 +}; + +//Diff encoded train_seq +//TSC0: +.++.+++..+...++..++.+++.. +//TSC1: +.+++.++..++...+..++.+++.. +//TSC2: +++...+..++..+++.++...+..+ +//TSC3: +++..+...++.+++..++..+...+ +//TSC4: +..+.++++..+.++....+.++++. +//TSC5: +++.+..++++.+....++.+..+++ +//TSC6: .+++.+....++.+..++++.+.... +//TSC7: ...++...+..++.+++..++...+. +//TSC8: .......................... +//TSC9: ++..+..+++..+..+++..+..+++ + + +#endif /* INCLUDED_GSM_CONSTANTS_H */ |