/*
 *  Hamlib Alinco backend - main file
 *  Copyright (c) 2001,2002 by Stephane Fillod
 *
 *		$Id: alinco.c,v 1.13 2002-03-13 23:37:12 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 <stdlib.h>
#include <stdio.h>   /* Standard input/output definitions */
#include <string.h>  /* String function definitions */
#include <unistd.h>  /* UNIX standard function definitions */
#include <fcntl.h>   /* File control definitions */
#include <errno.h>   /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */
#include <sys/ioctl.h>
#include <math.h>

#include <hamlib/rig.h>
#include <serial.h>
#include <misc.h>
#include <cal.h>

#include "alinco.h"


/* Line Feed */
#define EOM "\x0a"

#define BUFSZ 32

/*
 * modes in use by the "2G" command
 */
#define MD_LSB	'0'
#define MD_USB	'1'
#define MD_CWL	'2'
#define MD_CWU	'3'
#define MD_AM	'4'
#define MD_FM 	'5'

#define AL "AL"
#define CMD_TXFREQ	"0A"	/* Transmit frequency */
#define CMD_RXFREQ	"0B"	/* Receive frequency */
#define CMD_VFO 	"1A"
#define CMD_MEMMD	"1B"	/* Memory mode */
#define CMD_CHAN	"1D"	/* Channel Display */
#define CMD_UPDWN	"2A"	/* UP/DOWN */
#define CMD_MON 	"2B"	/* Check Transmit Frequency */
#define CMD_PWR		"2C"	/* Transmit Output Power */
#define CMD_SCAN	"2D"	/* Scanning */
#define CMD_PRIO	"2E"	/* Priority */
#define CMD_SPLT	"2F"	/* Split */
#define CMD_MODE	"2G"	/* Mode */
#define CMD_RFGAIN	"2H"	/* RF Gain */
#define CMD_AGC 	"2I"
#define CMD_FLTER	"2J"	/* Filter */
#define CMD_NB  	"2K"
#define CMD_CTCSS	"2L"
#define CMD_TUNE	"2M"
#define CMD_SELECT	"2N"
#define CMD_MCALL	"2V"	/* Memory Channel Call Up */
#define CMD_SDATA	"2W"	/* Set Data */

/* Data Output Commands */
#define CMD_SMETER	"3A"	/* S-meter read */
#define CMD_PTT 	"3B"	/* PTT status read */
#define CMD_SQL 	"3C"	/* Squelch status */
#define CMD_RIT 	"3D"	/* RIT status */
#define CMD_RMEM	"3E"	/* Current Memory-channel Number read */
#define CMD_RMV  	"3G"	/* Memory/VFO -mode read */
#define CMD_RDATA	"3H"	/* Current Data read */
#define CMD_RSPLT	"3I"	/* Split read */
#define CMD_RPOWER	"3J"	/* Transmitter Output read */
#define CMD_RSELECT	"3K"	/* SELECT Postion read */


/*
 * alinco_transaction
 * We assume that rig!=NULL, rig->state!= NULL, data!=NULL, data_len!=NULL
 * Otherwise, you'll get a nice seg fault. You've been warned!
 * TODO: error case handling
 */
int alinco_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;

	*data_len = read_string(&rs->rigport, data, BUFSZ, EOM, strlen(EOM));

	return RIG_OK;
}

/*
 * alinco_set_vfo
 * Assumes rig!=NULL
 */
int alinco_set_vfo(RIG *rig, vfo_t vfo)
{
		char cmdbuf[BUFSZ];
		int cmd_len;
		char vfo_num;

		switch (vfo) {
		case RIG_VFO_A: vfo_num = '1'; break;
		case RIG_VFO_B: vfo_num = '2'; break;
		case RIG_VFO_MEM: 
			return alinco_transaction (rig, AL CMD_MEMMD "0" EOM, 
							strlen(AL CMD_MEMMD "0" EOM), NULL, NULL);
		default: 
			rig_debug(RIG_DEBUG_ERR,"alinco_set_vfo: unsupported VFO %d\n",
								vfo);
			return -RIG_EINVAL;
		}
		cmd_len = sprintf(cmdbuf, AL CMD_VFO "%c" EOM, vfo_num);

		return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);
}

/*
 * alinco_get_vfo
 * Assumes rig!=NULL, !vfo
 */
int alinco_get_vfo(RIG *rig, vfo_t *vfo)
{
		char vfobuf[BUFSZ];
		int vfo_len, retval;

		retval = alinco_transaction(rig, AL CMD_RMV EOM, 
						strlen(AL CMD_RMV EOM), vfobuf, &vfo_len);
		if (retval != RIG_OK)
			return retval;

		if (vfo_len != 4 || vfo_len != 6) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_vfo: wrong answer %s, "
							"len=%d\n", vfobuf, vfo_len);
			return -RIG_ERJCTED;
		}
		vfobuf[vfo_len] = '\0';

		if (!strcmp(vfobuf, "VFOA"))
				*vfo = RIG_VFO_A;
		else if (!strcmp(vfobuf, "VFOB"))
				*vfo = RIG_VFO_B;
		else if (!strcmp(vfobuf, "Memory") || !strcmp(vfobuf, "MEMO"))
				*vfo = RIG_VFO_MEM;
		else {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_vfo: unsupported VFO %s\n",
								vfobuf);
			return -RIG_EPROTO;
		}
		return RIG_OK;
}

/*
 * alinco_set_freq
 * Assumes rig!=NULL
 */
int alinco_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
{
		char freqbuf[BUFSZ];
		int freq_len;

		/* max 10 digits */
		if (freq >= GHz(10))
				return -RIG_EINVAL;

		/* at least 6 digits */
		freq_len = sprintf(freqbuf, AL CMD_RXFREQ "%06Ld" EOM, freq);

		return alinco_transaction (rig, freqbuf, freq_len, NULL, NULL);
}

/*
 * where databuf points to a 26 char long buffer 
 */
static int current_data_read(RIG *rig, char *databuf)
{
		int data_len, retval;

		retval = alinco_transaction (rig, AL CMD_RDATA EOM, 
						strlen(AL CMD_RDATA EOM), databuf, &data_len);
		if (retval != RIG_OK)
			return retval;

		if (data_len != 26) {
			rig_debug(RIG_DEBUG_ERR,"alinco_current_data_read: "
							"wrong answer %s, len=%d\n", databuf, data_len);
			return -RIG_ERJCTED;
		}
		return RIG_OK;
}

/*
 * alinco_get_freq
 * Assumes rig!=NULL, freq!=NULL
 */
int alinco_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
{
		int retval;
		char freqbuf[BUFSZ];

		retval = current_data_read(rig, freqbuf);
		if (retval != RIG_OK)
				return retval;

		/* extract RX freq */
		freqbuf[16] = '\0';
		sscanf(freqbuf+6, "%lld", freq);

		return RIG_OK;
}

/*
 * alinco_set_mode
 * Assumes rig!=NULL
 */
int alinco_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
{
		char mdbuf[BUFSZ];
		int mdbuf_len, narrow_filter, retval;
		char amode;

		switch (mode) {
				/* FIXME: MD_CWL or MD_CWU? */
			case RIG_MODE_CW:       amode = MD_CWL; break;
			case RIG_MODE_USB:      amode = MD_USB; break;
			case RIG_MODE_LSB:      amode = MD_LSB; break;
			case RIG_MODE_FM:       amode = MD_FM; break;
			case RIG_MODE_AM:       amode = MD_AM; break;
			default:
				rig_debug(RIG_DEBUG_ERR,
								"alinco_set_mode: unsupported mode %d\n",
								mode);
				return -RIG_EINVAL;
		}

		mdbuf_len = sprintf(mdbuf, AL CMD_MODE "%c" EOM, amode);
		retval = alinco_transaction (rig, mdbuf, mdbuf_len, NULL, NULL);
		if (retval != RIG_OK)
			return retval;

		/*
		 * TODO: please DX77 owners, check this, I'm not sure
		 * 			which passband is default!
		 */
		if (width != RIG_PASSBAND_NORMAL && 
						width < rig_passband_normal(rig, mode))
				narrow_filter = 1;
		else
				narrow_filter = 0;

		mdbuf_len = sprintf(mdbuf, AL CMD_FLTER "%02d" EOM, narrow_filter);
		retval = alinco_transaction (rig, mdbuf, mdbuf_len, NULL, NULL);

		return retval;
}

/*
 * alinco_get_mode
 * Assumes rig!=NULL, mode!=NULL
 */
int alinco_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
{
		int retval;
		int settings;
		char modebuf[BUFSZ];

		retval = current_data_read(rig, modebuf);
		if (retval != RIG_OK)
				return retval;

		/* FIXME: CWL&CWU: what are they? CW & CWR? */
		switch (modebuf[3]) {
			case MD_CWL:
			case MD_CWU:      *mode = RIG_MODE_CW; break;
			case MD_USB:      *mode = RIG_MODE_USB; break;
			case MD_LSB:      *mode = RIG_MODE_LSB; break;
			case MD_AM:       *mode = RIG_MODE_AM; break;
			case MD_FM:       *mode = RIG_MODE_FM; break;
			default:
				rig_debug(RIG_DEBUG_ERR,
								"alinco_get_mode: unknown mode %c%c\n",
								modebuf[2],modebuf[3]);
				return -RIG_EINVAL;
		}
		modebuf[2] = '\0';
		settings = strtol(modebuf, (char **)NULL, 16);
		/*
		 * TODO: please DX77 owners, check this, I'm not sure
		 * 			which passband is default!
		 */
		if (settings & 0x02)
				*width = rig_passband_narrow(rig, *mode);
		else
				*width = rig_passband_normal(rig, *mode);

		return RIG_OK;
}

/*
 * alinco_set_split
 * Assumes rig!=NULL
 */
int alinco_set_split(RIG *rig, vfo_t vfo, split_t split)
{
		int cmd_len;
		char cmdbuf[BUFSZ];

		cmd_len = sprintf(cmdbuf, AL CMD_SPLT "%d" EOM, 
						split==RIG_SPLIT_ON ? 1 : 0);

		return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);
}

/*
 * alinco_get_split
 * Assumes rig!=NULL, split!=NULL
 */
int alinco_get_split(RIG *rig, vfo_t vfo, split_t *split)
{
		int splt_len, retval;
		char spltbuf[BUFSZ];

		retval = alinco_transaction (rig, AL CMD_RSPLT EOM, 
						strlen(AL CMD_RSPLT EOM), spltbuf, &splt_len);
		if (retval != RIG_OK)
			return retval;

		if (splt_len != 2) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_split: wrong answer %s, "
							"len=%d\n", spltbuf, splt_len);
			return -RIG_ERJCTED;
		}
		spltbuf[splt_len] = '\0';

		if (!strcmp(spltbuf, "OF"))
				*split = RIG_SPLIT_OFF;
		else if (!strcmp(spltbuf, "ON"))
				*split = RIG_SPLIT_ON;
		else {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_split: unsupported SPLIT %s\n",
								spltbuf);
			return -RIG_EPROTO;
		}
		return RIG_OK;
}

/*
 * alinco_set_split_freq
 * Assumes rig!=NULL
 */
int alinco_set_split_freq(RIG *rig, vfo_t vfo, freq_t tx_freq)
{
		char freqbuf[BUFSZ];
		int freq_len;
		int retval;

		/* max 10 digits */
		if (tx_freq >= GHz(10))
				return -RIG_EINVAL;

		/* at least 6 digits */
		freq_len = sprintf(freqbuf, AL CMD_TXFREQ "%06Ld" EOM, tx_freq);

		retval = alinco_transaction (rig, freqbuf, freq_len, NULL, NULL);

		return retval;
}

/*
 * alinco_get_split_freq
 * Assumes rig!=NULL, rx_freq!=NULL, tx_freq!=NULL
 */
int alinco_get_split_freq(RIG *rig, vfo_t vfo, freq_t *tx_freq)
{
		int retval;
		char freqbuf[BUFSZ];

		retval = current_data_read(rig, freqbuf);
		if (retval != RIG_OK)
				return retval;

		/* extract TX freq first, as RX kills freqbuf[16] */
		freqbuf[26] = '\0';
		sscanf(freqbuf+16, "%lld", tx_freq);

		return RIG_OK;
}


/*
 * alinco_get_rit
 * Assumes rig!=NULL, split!=NULL
 */
int alinco_get_rit(RIG *rig, vfo_t vfo, shortfreq_t *rit)
{
		int rit_len, retval;
		char ritbuf[BUFSZ];

		/* read in Hertz unit */
		retval = alinco_transaction (rig, AL CMD_RIT "0" EOM,
						strlen(AL CMD_RIT "0" EOM), ritbuf, &rit_len);
		if (retval != RIG_OK)
			return retval;

		if (rit_len > 5 || (ritbuf[0] != '+' && ritbuf[0] != '-')) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_rit: wrong answer %s, "
							"len=%d\n", ritbuf, rit_len);
			return -RIG_ERJCTED;
		}
		ritbuf[rit_len] = '\0';

		*rit = atoi(ritbuf);

		return RIG_OK;
}


/*
 * alinco_set_func
 * Assumes rig!=NULL
 */
int alinco_set_func(RIG *rig, vfo_t vfo, setting_t func, int status)
{
		int cmd_len;
		char cmdbuf[BUFSZ];

		/* Optimize:
		 *   sort the switch cases with the most frequent first
		 */
		switch (func) {
		case RIG_FUNC_TONE:
			cmd_len = sprintf(cmdbuf, AL CMD_CTCSS "%02d" EOM, status?51:0);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		case RIG_FUNC_FAGC:
			cmd_len = sprintf(cmdbuf, AL CMD_AGC "%02d" EOM, status?1:2);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		case RIG_FUNC_NB:
			cmd_len = sprintf(cmdbuf, AL CMD_NB "%d" EOM, status?1:0);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		case RIG_FUNC_MON:
			cmd_len = sprintf(cmdbuf, AL CMD_MON "%d" EOM, status?1:0);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		default:
			rig_debug(RIG_DEBUG_ERR,"Unsupported set_func %d\n", func);
			return -RIG_EINVAL;
		}

		return RIG_OK;
}


/*
 * alinco_get_func
 * Assumes rig!=NULL, status!=NULL
 */
int alinco_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status)
{
		int retval;
		int settings;
		char funcbuf[BUFSZ];

		/* Optimize:
		 *   sort the switch cases with the most frequent first
		 */
		switch (func) {
		case RIG_FUNC_TONE:
			retval = current_data_read(rig, funcbuf);
			if (retval != RIG_OK)
					return retval;
			funcbuf[2] = '\0';
			settings = strtol(funcbuf, (char **)NULL, 16);
			*status = settings & 0x08 ? 1 : 0;
			break;

		case RIG_FUNC_FAGC:
			retval = current_data_read(rig, funcbuf);
			if (retval != RIG_OK)
					return retval;
			funcbuf[2] = '\0';
			settings = strtol(funcbuf, (char **)NULL, 16);
			*status = settings & 0x01 ? 1 : 0;
			break;

		case RIG_FUNC_NB:
			retval = current_data_read(rig, funcbuf);
			if (retval != RIG_OK)
					return retval;
			funcbuf[2] = '\0';
			settings = strtol(funcbuf, (char **)NULL, 16);
			*status = settings & 0x04 ? 1 : 0;
			break;

		default:
			rig_debug(RIG_DEBUG_ERR,"Unsupported get_func %d\n", func);
			return -RIG_EINVAL;
		}

		return RIG_OK;
}

/*
 * alinco_set_level
 * Assumes rig!=NULL
 * FIXME: cannot support PREAMP and ATT both at same time (make sense though)
 */
int alinco_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
{
		int cmd_len, lvl;
		char cmdbuf[BUFSZ];

		/* Optimize:
		 *   sort the switch cases with the most frequent first
		 */
		switch (level) {
		case RIG_LEVEL_PREAMP:
			switch (val.i) {
				case 0: lvl = 0; break;
				case 10: lvl = 1; break;
				default: rig_debug(RIG_DEBUG_ERR, "Unsupported Preamp %d\n",
										 val.i);
						 return -RIG_EINVAL;
			}
			cmd_len = sprintf(cmdbuf, AL CMD_RFGAIN "%02d" EOM, lvl);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		case RIG_LEVEL_ATT:
			switch (val.i) {
				case 0: lvl = 0; break;
				case 10: lvl = 11; break;
				case 20: lvl = 10; break;
				default: rig_debug(RIG_DEBUG_ERR, "Unsupported Att %d\n",
										 val.i);
						 return -RIG_EINVAL;
			}
			cmd_len = sprintf(cmdbuf, AL CMD_RFGAIN "%02d" EOM, lvl);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		case RIG_LEVEL_RFPOWER:
			cmd_len = sprintf(cmdbuf, AL CMD_PWR "%1d" EOM, val.f<0.5 ? 1 : 0);

			return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		default:
			rig_debug(RIG_DEBUG_ERR,"Unsupported set_level %d\n", level);
			return -RIG_EINVAL;
		}

		return RIG_OK;
}


/*
 * alinco_get_level
 * Assumes rig!=NULL, val!=NULL
 */
int alinco_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
{
 		struct alinco_priv_caps *priv;
		int retval, lvl_len;
		char lvlbuf[BUFSZ];

		priv = (struct alinco_priv_caps*)rig->caps->priv;

		/* Optimize:
		 *   sort the switch cases with the most frequent first
		 */
		switch (level) {
		case RIG_LEVEL_STRENGTH:
				/* read A/D converted value */
			retval = alinco_transaction (rig, AL CMD_SMETER "1" EOM, 
							strlen(AL CMD_SMETER "1" EOM), lvlbuf, &lvl_len);
			if (retval != RIG_OK)
				return retval;

			if (lvl_len != 5) {
				rig_debug(RIG_DEBUG_ERR,"alinco_get_level: wrong answer"
								"len=%d\n", lvl_len);
				return -RIG_ERJCTED;
			}

			lvlbuf[5] = '\0';
			val->i = rig_raw2val(atoi(lvlbuf+3), &priv->str_cal);
			break;

		case RIG_LEVEL_SQLSTAT:
			return -RIG_ENIMPL;	/* get_dcd ? */

		case RIG_LEVEL_PREAMP:
			retval = current_data_read(rig, lvlbuf);
			if (retval != RIG_OK)
					return retval;
			switch (lvlbuf[5]) {
				case '2':
				case '3':
				case '0': val->i = 0; break;
				case '1': val->i = 10; break;
				default: rig_debug(RIG_DEBUG_ERR, "Unknown RF Gain %c%c\n",
										 lvlbuf[4], lvlbuf[5]);
			}
			break;

		case RIG_LEVEL_ATT:
			retval = current_data_read(rig, lvlbuf);
			if (retval != RIG_OK)
					return retval;
			switch (lvlbuf[5]) {
				case '1':
				case '0': val->i = 0; break;
				case '2': val->i = 20; break;
				case '3': val->i = 10; break;
				default: rig_debug(RIG_DEBUG_ERR, "Unknown RF Gain %c%c\n",
										 lvlbuf[4], lvlbuf[5]);
			}
			break;

		case RIG_LEVEL_RFPOWER:
			retval = alinco_transaction (rig, AL CMD_RPOWER EOM, 
							strlen(AL CMD_RPOWER EOM), lvlbuf, &lvl_len);
			if (retval != RIG_OK)
				return retval;

			if (lvl_len != 1) {
				rig_debug(RIG_DEBUG_ERR,"alinco_get_level: wrong answer"
								"len=%d\n", lvl_len);
				return -RIG_ERJCTED;
			}

				/* H or L */
			val->f = lvlbuf[0] == 'H' ? 1.0 : 0.0;
			break;

		default:
			rig_debug(RIG_DEBUG_ERR,"Unsupported get_level %d\n", level);
			return -RIG_EINVAL;
		}

		return RIG_OK;
}

/*
 * alinco_set_ctcss_tone
 * Assumes rig!=NULL, rig->caps->ctcss_list != NULL
 */
int alinco_set_ctcss_tone(RIG *rig, vfo_t vfo, tone_t tone)
{
	const struct rig_caps *caps;
	unsigned char tonebuf[BUFSZ];
	int tone_len;
	int i;
								 
	caps = rig->caps;

/* TODO: replace 200 by something like RIGTONEMAX */
	for (i = 0; caps->ctcss_list[i] != 0 && i<200; i++) {
			if (caps->ctcss_list[i] == tone)
					break;
	}
	if (caps->ctcss_list[i] != tone)
			return -RIG_EINVAL;

	tone_len = sprintf(tonebuf, AL CMD_CTCSS "%02d" EOM, i+1);
	
	return alinco_transaction (rig, tonebuf, tone_len, NULL, NULL);
}

/*
 * alinco_get_ptt
 * Assumes rig!=NULL, ptt!=NULL
 */
int alinco_get_ptt(RIG *rig, vfo_t vfo, ptt_t *ptt)
{
		char pttbuf[BUFSZ];
		int ptt_len, retval;

		retval = alinco_transaction (rig, AL CMD_PTT EOM, 
						strlen(AL CMD_PTT EOM), pttbuf, &ptt_len);
		if (retval != RIG_OK)
			return retval;

		if (ptt_len != 3 || ptt_len != 4) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_ptt: wrong answer %s, "
							"len=%d\n", pttbuf, ptt_len);
			return -RIG_ERJCTED;
		}
		pttbuf[ptt_len] = '\0';

		if (!strcmp(pttbuf, "SEND"))
				*ptt = RIG_PTT_OFF;
		else if (!strcmp(pttbuf, "REV"))
				*ptt = RIG_PTT_ON;
		else {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_ptt: unknown PTT %s\n",
								pttbuf);
			return -RIG_EPROTO;
		}
		return RIG_OK;
}


/*
 * alinco_get_dcd
 * Assumes rig!=NULL, dcd!=NULL
 */
int alinco_get_dcd(RIG *rig, vfo_t vfo, dcd_t *dcd)
{
		char dcdbuf[BUFSZ];
		int dcd_len, retval;

		retval = alinco_transaction (rig, AL CMD_SQL EOM,
						strlen(AL CMD_SQL EOM), dcdbuf, &dcd_len);
		if (retval != RIG_OK)
			return retval;

		if (dcd_len != 4 || dcd_len != 5) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_dcd: wrong answer %s, "
							"len=%d\n", dcdbuf, dcd_len);
			return -RIG_ERJCTED;
		}
		dcdbuf[dcd_len] = '\0';

		if (!strcmp(dcdbuf, "OPEN"))
				*dcd = RIG_DCD_ON;
		else if (!strcmp(dcdbuf, "CLOSE"))
				*dcd = RIG_DCD_OFF;
		else {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_dcd: unknown SQL %s\n",
								dcdbuf);
			return -RIG_EPROTO;
		}
		return RIG_OK;
}

/*
 * alinco_set_mem
 * Assumes rig!=NULL
 * FIXME: check we're in memory mode first
 */
int alinco_set_mem(RIG *rig, vfo_t vfo, int ch)
{
		char cmdbuf[BUFSZ];
		int cmd_len;

		if (ch < 0 || ch > 99)
				return -RIG_EINVAL;

		cmd_len = sprintf(cmdbuf, AL CMD_MCALL "%02d" EOM, ch);

		return alinco_transaction (rig, cmdbuf, cmd_len, NULL, NULL);
}

/*
 * alinco_get_mem
 * Assumes rig!=NULL, !vfo
 */
int alinco_get_mem(RIG *rig, vfo_t vfo, int *ch)
{
		char membuf[BUFSZ];
		int mem_len, retval;

		retval = alinco_transaction (rig, AL CMD_RMEM EOM, 
						strlen(AL CMD_RMEM EOM), membuf, &mem_len);
		if (retval != RIG_OK)
			return retval;

		if (mem_len != 2) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_mem: wrong answer %s, "
							"len=%d\n", membuf, mem_len);
			return -RIG_ERJCTED;
		}
		membuf[mem_len] = '\0';

		*ch = atoi(membuf);
		if (*ch < 0 || *ch > 99) {
			rig_debug(RIG_DEBUG_ERR,"alinco_get_mem: unknown mem %s\n",
								membuf);
			return -RIG_EPROTO;
		}

		return RIG_OK;
}


/*
 * initrigs_alinco is called by rig_backend_load
 */
int initrigs_alinco(void *be_handle)
{
		rig_debug(RIG_DEBUG_VERBOSE, "alinco: _init called\n");

		rig_register(&dx77_caps);

		return RIG_OK;
}