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lowe.c

/*
 *  Hamlib Lowe backend - main file
 *  Copyright (c) 2003-2005 by Stephane Fillod
 *
 *    $Id: lowe.c,v 1.4 2005/04/10 21:47:13 fillods Exp $
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as
 *   published by the Free Software Foundation; either version 2 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 Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>  /* String function definitions */
#include <unistd.h>  /* UNIX standard function definitions */
#include <math.h>

#include "hamlib/rig.h"
#include "serial.h"
#include "misc.h"
#include "register.h"

#include "lowe.h"


#define BUFSZ 64

#define CR "\x0d"
#define EOM CR

#define MD_USB    "USB"
#define MD_LSB    "LSB"
#define MD_FAX    "FAX"
#define MD_CW     "CW"
#define MD_FM     "FM"
#define MD_AM     "AM"
#define MD_AMS    "AMS"


/*
 * lowe_transaction
 * We assume that rig!=NULL, rig->state!= NULL, data!=NULL, data_len!=NULL
 */
int lowe_transaction(RIG *rig, const char *cmd, int cmd_len, char *data, int *data_len)
{
      int retval;
      struct rig_state *rs;

      rs = &rig->state;

      serial_flush(&rs->rigport);

      retval = write_block(&rs->rigport, cmd, cmd_len);
      if (retval != RIG_OK)
            return retval;


      /* no data expected, TODO: flush input? */
      if (!data || !data_len)
                  return 0;

      retval = read_string(&rs->rigport, data, BUFSZ, CR, 1);
      if (retval == -RIG_ETIMEOUT)
            retval = 0;
      if (retval < 0)
            return retval;
      *data_len = retval;

      return RIG_OK;
}

/*
 * lowe_set_freq
 * Assumes rig!=NULL
 */
int lowe_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
{
      unsigned char freqbuf[16], ackbuf[16];
      int freq_len, ack_len, retval;

      /* 
       */
      freq_len = sprintf(freqbuf,"FRQ%f" EOM, (float)freq/1000);
      retval = lowe_transaction(rig, freqbuf, freq_len, ackbuf, &ack_len);

      return retval;
}

/*
 * lowe_get_freq
 * Assumes rig!=NULL
 */
int lowe_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
{
      unsigned char freqbuf[16];
      int freq_len, retval;
      float f_freq;

      retval = lowe_transaction(rig, "FRQ?" EOM, 5, freqbuf, &freq_len);

      if (retval != RIG_OK)
            return retval;

      freqbuf[freq_len < 16 ? freq_len : 15] = '\0';

      sscanf(freqbuf+1, "%f", &f_freq);
      *freq = f_freq*1000;

      return retval;
}


/*
 * lowe_set_mode
 * Assumes rig!=NULL
 */
int lowe_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
{
      unsigned char mdbuf[16], ackbuf[16];
      unsigned char *mode_sel;
      int mdbuf_len, ack_len, retval;

      switch (mode) {
      case RIG_MODE_CW:       mode_sel = MD_CW; break;
      case RIG_MODE_USB:      mode_sel = MD_USB; break;
      case RIG_MODE_LSB:      mode_sel = MD_LSB; break;
      case RIG_MODE_FM:       mode_sel = MD_FM; break;
      case RIG_MODE_AM:       mode_sel = MD_AM; break;
      case RIG_MODE_FAX:     mode_sel = MD_FAX; break;
      case RIG_MODE_AMS:     mode_sel = MD_AMS; break;
      default:
            rig_debug(RIG_DEBUG_ERR,"lowe_set_mode: "
                                    "unsupported mode %d\n", mode);
            return -RIG_EINVAL;
      }

      mdbuf_len = sprintf(mdbuf, "MOD%s" EOM, mode_sel);
      retval = lowe_transaction (rig, mdbuf, mdbuf_len, ackbuf, &ack_len);

      return retval;
}


/*
 * lowe_get_mode
 * Assumes rig!=NULL
 */
int lowe_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
{
      unsigned char mdbuf[16];
      int mdbuf_len, retval;

      retval = lowe_transaction (rig, "MOD?" EOM, 5, mdbuf, &mdbuf_len);

      if (retval != RIG_OK)
            return retval;

      if (!strcmp(mdbuf+1, MD_CW))
            *mode = RIG_MODE_CW;
      else if (!strcmp(mdbuf+1, MD_USB))
            *mode = RIG_MODE_USB;
      else if (!strcmp(mdbuf+1, MD_LSB))
            *mode = RIG_MODE_LSB;
      else if (!strcmp(mdbuf+1, MD_FM))
            *mode = RIG_MODE_FM;
      else if (!strcmp(mdbuf+1, MD_FAX))
            *mode = RIG_MODE_FAX;
      else if (!strcmp(mdbuf+1, MD_AMS))
            *mode = RIG_MODE_AMS;
      else if (!strcmp(mdbuf+1, MD_AM))
            *mode = RIG_MODE_AM;
      else {
            rig_debug(RIG_DEBUG_WARN,"%s: unknown mode '%s'\n",
                        __FUNCTION__, mdbuf);
            return -RIG_EPROTO;
      }

      *width = RIG_PASSBAND_NORMAL;

      return retval;
}

/*
 * lowe_get_level
 * Assumes rig!=NULL
 */
int lowe_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
{
      unsigned char lvlbuf[16];
      int lvl_len, retval;

      if (level != RIG_LEVEL_STRENGTH)
            return -RIG_EINVAL;

      retval = lowe_transaction(rig, "RSS?" EOM, 5, lvlbuf, &lvl_len);

      if (retval != RIG_OK)
            return retval;

      lvlbuf[lvl_len < 16 ? lvl_len : 15] = '\0';

      sscanf(lvlbuf+1, "%d", &val->i);

      val->i += 60;     /* dBm */

      return retval;
}


/*
 * lowe_reset
 * Assumes rig!=NULL
 */
int lowe_reset(RIG *rig, reset_t reset)
{
      static unsigned char ackbuf[BUFSZ];
      int retval, ack_len;

      retval = lowe_transaction(rig, "RES" EOM, 4, ackbuf, &ack_len);

      return retval;
}


/*
 * lowe_get_info
 * Assumes rig!=NULL
 */
const char *lowe_get_info(RIG *rig)
{
      static unsigned char idbuf[BUFSZ];
      int retval, id_len;

      /* hack: no idea what INF is for */
      retval = lowe_transaction(rig, "INF?" EOM, 5, idbuf, &id_len);

      /* this is the real one */
      retval = lowe_transaction(rig, "TYP?" EOM, 5, idbuf, &id_len);
      if (retval != RIG_OK)
            return NULL;

      idbuf[id_len] = '\0';

      return idbuf;
}

/*
 * probe_lowe(port_t *port, rig_probe_func_t cfunc, rig_ptr_t data)
 */
DECLARE_PROBERIG_BACKEND(lowe)
{
      static unsigned char idbuf[BUFSZ];
      int retval, id_len;

      if (!port)
            return RIG_MODEL_NONE;

      if (port->type.rig != RIG_PORT_SERIAL)
            return RIG_MODEL_NONE;

      port->parm.serial.rate = hf235_caps.serial_rate_max;
      port->write_delay = port->post_write_delay = 0;
      port->timeout = 50;
      port->retry = 1;

      retval = serial_open(port);
      if (retval != RIG_OK)
            return RIG_MODEL_NONE;

      retval = write_block(port, "TYP?" EOM, 4);
      id_len = read_string(port, idbuf, BUFSZ, CR, 2);

      close(port->fd);

      if (retval != RIG_OK || id_len <= 0 || id_len >= BUFSZ)
            return RIG_MODEL_NONE;

      idbuf[id_len] = '\0';

      if (!strcmp(idbuf, "HF-235")) {
            if (cfunc)
                  (*cfunc)(port, RIG_MODEL_HF235, data);
            return RIG_MODEL_HF235;
      }

      /*
       * not found... 
       */
      if (memcmp(idbuf, "ID" EOM, 3)) /* catch loopback serial */
            rig_debug(RIG_DEBUG_VERBOSE,"probe_lowe: found unknown device "
                        "with ID '%s', please report to Hamlib "
                        "developers.\n", idbuf);

      return RIG_MODEL_NONE;
}


/*
 * initrigs_lowe is called by rig_backend_load
 */
DECLARE_INITRIG_BACKEND(lowe)
{
      rig_debug(RIG_DEBUG_VERBOSE, "lowe: _init called\n");

      rig_register(&hf235_caps);

      return RIG_OK;
}


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