radio_bs.c

软件无线电的平台

/***************************************************************************
               radio_bs.c  -  ICS-test
                            -------------------
    begin                :  02/10/30
    authors              :  Linus Gasser
    emails               :  [e-mail]
 ***************************************************************************/

/***************************************************************************
                                 Changes
                                 -------
 date - name - description
 02/10/30 - ineiti - begin
 02/11/04 - ineiti - no msgqs...
 03/02/27 - ineiti - simplified to only two slots: BCH and RACH
 03/03/19 - ineiti - added SCH and gain-control
 04/03/01 - ineiti - all chains work now
 
 **************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/


/**
 * Make a simple BS
 *
 * Function:
 * - emit sync
 * - listen to RACh
 * - two downlink chains on antenna #0, one uplink on antenna #1
 */

#include "system.h"
#include "sdb.h"
#include "stfa.h"
#include "antenna.h"
#include "std.h"
#include "debugging.h"
#include "../ics_radio.h"
#include "chain.h"


#define DBG_LVL 4
#define DATA_LEN 4096
    SYMBOL_COMPLEX d[DATA_LEN] = {
      {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},{0,0},{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},{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},{0,0},{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},{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},
      {0,0},{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},{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},
      {16000, 0},
      {0, 16000},
      {-16000, 0},
      {0, -16000},
      {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},
      {16000, 0},
      {0, 16000},
      {-16000, 0},
      {0, -16000},
      {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},{0,0},{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},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},
      {32000, 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, 32000},
      {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},
      {-32000, 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, -32000},
    };

#define CH_SUPPS 2
swr_sdb_id stfa[ANTENNAS], sch, mafi, slicer, rrc_send;
struct chain_t *ch_bch, *ch_rach, *ch_supp[CH_SUPPS];
struct bch_struct bch_data;
double gain;

int looping, delay;

/**
 * Once a frame this function is called. Do here whatever seems accurate...
 */
int do_send_down( int msg, void *data, swr_sdb_id ret_id ) {
  return 0;
}


void *start_it( void *arg ) {
  swr_sdb_id mod, src, ofdm_send;
  int i;

  looping = 1;
  gain = 0.;

  usleep( 100000 );

  PR( "Init STFA\n" );
  stfa[0] = swr_sdb_instantiate_name( "stfa_ics" );
  for ( i=1; i<ANTENNAS; i++ ){
    stfa[i] = swr_sdb_instantiate_name( "stfa_ics" );
    swr_sdb_set_config_int( stfa[i-1], "stfa_id", stfa[i] );
  }

  PR( "Initialized STFA\n" );
  swr_sdb_set_config_int( stfa[0], "slots_per_frame", SLOTS );
  swr_sdb_set_config_int( stfa[0], "blocks_per_slot", SLOT_LEN );
  swr_sdb_set_config_int( stfa[0], "slot_send_offset", SLOT_OFFSET );
  swr_sdb_set_config_int( stfa[0], "tx", 1 );
  swr_sdb_set_config_int( stfa[0], "attn_tx", 0 );

  PR( "Setting up BCh on slot 0\n" );
  ch_bch = swr_chain_create(
             NEW_SPC_VAR( "sch_send", sch ),
             NEW_SPC_VAR( "mapper", mod ),
	     NEW_SPC( "spread" ),
             NEW_SPC( "chest_send" ),
             NEW_SPC( "synch_send" ),
             NEW_SPC_VAR( "rrc_complex_send", rrc_send ),
             OLD_SPC_IN( stfa[0], 0 ),
             CHAIN_END );
  swr_stfa_notice_sdb( stfa[0], 0, sch );
  swr_sdb_set_config_int( rrc_send, "rrc_index", 1 );

  swr_sdb_set_config_int( sch, "id0", 0x1234 );
  swr_sdb_set_config_int( sch, "uplinks0", 2 );

  PR( "Setting up some random stuff on slot 0 of stfa %i\n", i );
  ch_supp[1] = swr_chain_create(
			  NEW_SPC_VAR( "random", src ),
			  NEW_SPC( "mapper" ),
			  NEW_SPC_VAR( "ofdm_send", ofdm_send ),
			  NEW_SPC( "chest_send" ),
			  NEW_SPC( "rrc_complex_send" ),
			  OLD_SPC_IN( stfa[0], 2 ),
			  CHAIN_END );
  swr_stfa_notice_sdb( stfa[0], 2, src );
  
  swr_stfa_go( stfa[0] );

  while ( looping ) {
    usleep( 1000000 );
  }

  swr_stfa_stop( stfa[0] );
  usleep( 1000000 );

  return 0;
}


struct thread start;

/**
 * This function is called upon "insmod" and is used to register the
 * different parts of the module to the SPM.
 */
int um_module_init(void) {
  int i;

  MOD_INC_USE_COUNT;
  looping = 1;
  delay = 0;
  ch_bch = NULL;
  for ( i=0; i<CH_SUPPS; i++ ){
    ch_supp[ i ] = NULL;
  }

  if ( swr_thread_init( &start, start_it, NULL ) ) {
    goto rrc_no_thread;
  }
  MOD_DEC_USE_COUNT;
  return 0;

rrc_no_thread:
  PR_DBG( 0, "Couldn't init thread\n" );
  MOD_DEC_USE_COUNT;
  return -1;
}



void um_module_exit( void ) {
  int i;

  looping = 0;
  swr_thread_free( &start, NULL );
  PR( "Deleting BCH\n" );
  swr_chain_destroy( ch_bch );
  PR( "Deleting RACH\n" );
  swr_chain_destroy( ch_rach );
  for ( i=0; i<CH_SUPPS; i++ ){
    if ( ch_supp[ i ] ){
      PR( "Deleting ch_supp[%i]\n", i );
      swr_chain_destroy( ch_supp[ i ] );
    }
  }  
  PR( "Destroying stfas\n" );
  for ( i=0; i<ANTENNAS; i++ ){
    PR( "Destroying stfa[%i]\n", i );
    swr_sdb_destroy( stfa[i] );
  }
}


module_init( um_module_init );
module_exit( um_module_exit );