Hamlib/icom/optoscan.c

/*
 *  Hamlib CI-V backend - OptoScan extensions
 *  Copyright (c) 2000-2005 by Stephane Fillod
 *
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   This library 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
 *   Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  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 <sys/time.h>

#include "hamlib/rig.h"
#include "serial.h"
#include "misc.h"
#include "cal.h"
#include "token.h"

#include "icom.h"
#include "icom_defs.h"
#include "frame.h"
#include "optoscan.h"


const struct confparams opto_ext_parms[] = {
	{ TOK_TAPECNTL, "tapecntl", "Toggle Tape Switch", "Toggles built in tape switch", 0, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_5KHZWIN,  "5khzwin", "Toggle 5kHz Search Window", "Toggles 5kHz search window", 0, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_SPEAKER,  "speaker", "Toggle speaker audio", "Toggles speaker audio", 0, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_AUDIO, "audio", "Audio present", "Audio present", NULL, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_DTMFPEND, "dtmfpend", "DTMF Digit Pending", "DTMF Digit Pending", NULL, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_DTMFOVRR, "dtmfovrr", "DTMF Buffer Overflow", "DTMF Buffer Overflow", NULL, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_CTCSSACT, "ctcssact", "CTCSS Tone Active", "CTCSS Tone Active", NULL, RIG_CONF_CHECKBUTTON, {} },
	{ TOK_DCSACT,   "dcsact", "DCS Code Active", "DCS Code Active", NULL, RIG_CONF_CHECKBUTTON, {} },
	{ RIG_CONF_END, NULL, }
};

static int optoscan_get_status_block(RIG *rig, struct optostat *status_block);
static int optoscan_send_freq(RIG *rig, pltstate_t *state);
static int optoscan_RTS_toggle(RIG *rig);
static int optoscan_start_timer(RIG *rig, pltstate_t *state);
static int optoscan_wait_timer(RIG *rig, pltstate_t *state);

/*
 * optoscan_open
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
int optoscan_open(RIG *rig)
{
	struct icom_priv_data *priv;
	struct rig_state *rs;
	pltstate_t *pltstate;
	unsigned char ackbuf[16];
	int ack_len, retval;

	rs = &rig->state;
	priv = (struct icom_priv_data *)rs->priv;

	pltstate = malloc(sizeof(pltstate_t));

	if (!pltstate) {
		return -RIG_ENOMEM;
	}

	memset(pltstate, 0, sizeof(pltstate_t));
	priv->pltstate = pltstate;

	/* select REMOTE control */
	retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_REMOTE,
				  NULL, 0, ackbuf, &ack_len);

	if (retval != RIG_OK) {
		free(pltstate);
		return retval;
	}

	if (ack_len != 1 || ackbuf[0] != ACK) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_open: ack NG (%#.2x), "
			  "len=%d\n", ackbuf[0], ack_len);
		free(pltstate);
		return -RIG_ERJCTED;
	}

	return RIG_OK;
}

/*
 * optoscan_close
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
int optoscan_close(RIG *rig)
{
	struct icom_priv_data *priv;
	struct rig_state *rs;
	unsigned char ackbuf[16];
	int ack_len, retval;

	rs = &rig->state;
	priv = (struct icom_priv_data *)rs->priv;

	/* select LOCAL control */
	retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_LOCAL,
				  NULL, 0, ackbuf, &ack_len);

	if (retval != RIG_OK)
		return retval;

	if (ack_len != 1 || ackbuf[0] != ACK) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_close: ack NG (%#.2x), "
			  "len=%d\n", ackbuf[0], ack_len);
		return -RIG_ERJCTED;
	}

	free(priv->pltstate);

	return RIG_OK;
}

/*
 * optoscan_get_info
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
const char *optoscan_get_info(RIG *rig)
{
	unsigned char ackbuf[16];
	int ack_len, retval;
	static char info[64];

	/* select LOCAL control */
	retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_RDID,
				  NULL, 0, ackbuf, &ack_len);

	if (retval != RIG_OK)
		return NULL;

	if (ack_len != 7) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_get_info: ack NG (%#.2x), "
			  "len=%d\n", ackbuf[0], ack_len);
		return NULL;
	}

	sprintf(info, "OptoScan%c%c%c, software version %d.%d, "
		"interface version %d.%d\n",
		ackbuf[2], ackbuf[3], ackbuf[4],
		ackbuf[5] >> 4, ackbuf[5] & 0xf,
		ackbuf[6] >> 4, ackbuf[6] & 0xf);

	return info;
}

/*
 * optoscan_get_ctcss_tone
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
int optoscan_get_ctcss_tone(RIG *rig, vfo_t vfo, tone_t *tone)
{
	unsigned char tonebuf[MAXFRAMELEN];
	int tone_len, retval;

	retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_RDCTCSS, NULL, 0,
				  tonebuf, &tone_len);

	if (retval != RIG_OK)
		return retval;

	if (tone_len != 4) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_get_ctcss_tone: ack NG (%#.2x), "
			  "len=%d\n", tonebuf[0], tone_len);
		return -RIG_ERJCTED;
	}

	tone_len -= 2;

	*tone = from_bcd_be(tonebuf + 2, tone_len * 2);
	rig_debug(RIG_DEBUG_ERR, "optoscan_get_ctcss_tone: *tone=%d\n", *tone);

	return RIG_OK;
}


/*
 * optoscan_get_dcs_code
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
int optoscan_get_dcs_code(RIG *rig, vfo_t vfo, tone_t *code)
{
	unsigned char tonebuf[MAXFRAMELEN];
	int tone_len, retval;

	retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_RDDCS, NULL, 0,
				  tonebuf, &tone_len);

	if (retval != RIG_OK)
		return retval;

	if (tone_len != 4) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_get_dcs_code: ack NG (%#.2x), "
			  "len=%d\n", tonebuf[0], tone_len);
		return -RIG_ERJCTED;
	}

	tone_len -= 2;

	*code = from_bcd_be(tonebuf + 2, tone_len * 2);
	rig_debug(RIG_DEBUG_ERR, "optoscan_get_dcs_code: *code=%d\n", *code);

	return RIG_OK;
}

int optoscan_recv_dtmf(RIG *rig, vfo_t vfo, char *digits, int *length)
{
	unsigned char dtmfbuf[MAXFRAMELEN], digit;
	int len, retval, digitpos;
	unsigned char xlate[] = {'0', '1', '2', '3', '4', '5', '6',
				 '7', '8', '9', 'A', 'B', 'C', 'D',
				 '*', '#'
				};
	digitpos = 0;

	do {
		retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_RDDTMF,
					  NULL, 0, dtmfbuf, &len);

		if (retval != RIG_OK)
			return retval;

		if (len != 3) {
			rig_debug(RIG_DEBUG_ERR, "optoscan_recv_dtmf: ack NG (%#.2x), len=%d\n", dtmfbuf[0], len);
			return -RIG_ERJCTED;
		}

		digit = dtmfbuf[2];

		if (digit < 0x16) {
			digits[digitpos] = xlate[digit];
			digitpos++;
		}
	} while ((digit != 0x99) && (digitpos < *length));

	*length = digitpos;
	digits[digitpos] = 0;

	if (*length > 0) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_recv_dtmf: %d digits - %s\n", *length, digits);
	} else {
		rig_debug(RIG_DEBUG_ERR, "optoscan_recv_dtmf: no digits to read.\n");
	}

	return RIG_OK;
}

/*
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
int optoscan_set_ext_parm(RIG *rig, token_t token, value_t val)
{
	unsigned char epbuf[MAXFRAMELEN], ackbuf[MAXFRAMELEN];
	int ack_len;
	int retval, subcode;

	memset(epbuf, 0, MAXFRAMELEN);
	memset(ackbuf, 0, MAXFRAMELEN);

	switch (token) {
	case TOK_TAPECNTL:
		if (val.i == 0) {
			subcode = S_OPTO_TAPE_OFF;
		} else {
			subcode = S_OPTO_TAPE_ON;
		}

		break;

	case TOK_5KHZWIN:
		if (val.i == 0) {
			subcode = S_OPTO_5KSCOFF;
		} else {
			subcode = S_OPTO_5KSCON;
		}

		break;

	case TOK_SPEAKER:
		if (val.i == 0) {
			subcode = S_OPTO_SPKROFF;
		} else {
			subcode = S_OPTO_SPKRON;
		}

		break;

	default:
		return -RIG_EINVAL;
	}

	retval = icom_transaction(rig, C_CTL_MISC, subcode, epbuf, 0,
				  ackbuf, &ack_len);

	if (retval != RIG_OK)
		return retval;

	if (ack_len != 1 || ackbuf[0] != ACK) {
		rig_debug(RIG_DEBUG_ERR, "%s: ack NG (%#.2x), "
			  "len=%d\n", __FUNCTION__, ackbuf[0], ack_len);
		return -RIG_ERJCTED;
	}

	return RIG_OK;
}

/*
 * Assumes rig!=NULL, rig->state.priv!=NULL
 *  and val points to a buffer big enough to hold the conf value.
 */
int optoscan_get_ext_parm(RIG *rig, token_t token, value_t *val)
{
	struct optostat status_block;
	int retval;

	retval = optoscan_get_status_block(rig, &status_block);

	if (retval != RIG_OK)
		return retval;

	switch (token) {
	case TOK_TAPECNTL:
		val->i = status_block.tape_enabled;
		break;

	case TOK_5KHZWIN:
		val->i = status_block.fivekhz_enabled;
		break;

	case TOK_SPEAKER:
		val->i = status_block.speaker_enabled;
		break;

	case TOK_AUDIO:
		val->i = status_block.audio_present;
		break;

	case TOK_DTMFPEND:
		val->i = status_block.DTMF_pending;
		break;

	case TOK_DTMFOVRR:
		val->i = status_block.DTMF_overrun;
		break;

	case TOK_CTCSSACT:
		val->i = status_block.CTCSS_active;
		break;

	case TOK_DCSACT:
		val->i = status_block.DCS_active;
		break;

	default:
		return -RIG_ENIMPL;
	}

	return RIG_OK;
}

/*
 * optoscan_set_level
 * Assumes rig!=NULL, rig->state.priv!=NULL
 */
int optoscan_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
{
	unsigned char lvlbuf[MAXFRAMELEN], ackbuf[MAXFRAMELEN];
	int ack_len;
	int lvl_cn, lvl_sc;		/* Command Number, Subcommand */
	int icom_val;
	int retval;

	memset(lvlbuf, 0, MAXFRAMELEN);

	/*
	 * So far, levels of float type are in [0.0..1.0] range
	 */
	if (RIG_LEVEL_IS_FLOAT(level))
		icom_val = val.f * 255;
	else
		icom_val = val.i;

	switch (level) {
	case RIG_LEVEL_AF:
		lvl_cn = C_CTL_MISC;

		if (icom_val == 0) {
			lvl_sc = S_OPTO_SPKROFF;
		} else {
			lvl_sc = S_OPTO_SPKRON;
		}

		break;

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

	retval = icom_transaction(rig, lvl_cn, lvl_sc, lvlbuf, 0,
				  ackbuf, &ack_len);

	if (retval != RIG_OK)
		return retval;

	if (ack_len != 1 || ackbuf[0] != ACK) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_set_level: ack NG (%#.2x), "
			  "len=%d\n", ackbuf[0], ack_len);
		return -RIG_ERJCTED;
	}

	return RIG_OK;
}

/*
 * optoscan_get_level
 * Assumes rig!=NULL, rig->state.priv!=NULL, val!=NULL
 */
int optoscan_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
{
	struct optostat status_block;
	unsigned char lvlbuf[MAXFRAMELEN];
	int lvl_len = 0;
	int lvl_cn, lvl_sc;		/* Command Number, Subcommand */
	int icom_val;
	int cmdhead;
	int retval;

	if (level != RIG_LEVEL_AF) {
		switch (level) {
		case RIG_LEVEL_RAWSTR:
			lvl_cn = C_RD_SQSM;
			lvl_sc = S_SML;
			break;

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

		retval = icom_transaction(rig, lvl_cn, lvl_sc, NULL, 0,
					  lvlbuf, &lvl_len);

		if (retval != RIG_OK)
			return retval;

		/*
		 * strbuf should contain Cn,Sc,Data area
		 */
		cmdhead = (lvl_sc == -1) ? 1 : 2;
		lvl_len -= cmdhead;

		if (lvlbuf[0] != ACK && lvlbuf[0] != lvl_cn) {
			rig_debug(RIG_DEBUG_ERR, "optoscan_get_level: ack NG (%#.2x), "
				  "len=%d\n", lvlbuf[0], lvl_len);
			return -RIG_ERJCTED;
		}

		/*
		 * The result is a 3 digit BCD, but in *big endian* order: 0000..0255
		 * (from_bcd is little endian)
		 */
		icom_val = from_bcd_be(lvlbuf + cmdhead, lvl_len * 2);
	} else { /* level == RIG_LEVEL_AF */
		retval = optoscan_get_status_block(rig, &status_block);

		if (retval != RIG_OK)
			return retval;

		icom_val = 0;

		if (status_block.speaker_enabled == 1)
			icom_val = 255;
	}

	switch (level) {
	case RIG_LEVEL_RAWSTR:
		val->i = icom_val;
		break;

	default:
		if (RIG_LEVEL_IS_FLOAT(level))
			val->f = (float)icom_val / 255;
		else
			val->i = icom_val;
	}

	rig_debug(RIG_DEBUG_TRACE, "optoscan_get_level: %d %d %d %f\n", lvl_len,
		  icom_val, val->i, val->f);

	return RIG_OK;
}

/* OS456 Pipeline tuning algorithm:
 *	Step 2:  Send the next frequency and mode to the receiver using the
 *		 TRANSFER NEXT FREQUENCY/MODE command.
 *
 *      Step 3:  Change the state of the RTS interface signal to cause the
 *               next frequency and mode to become the current frequency and
 *               mode, and the receiver to begin settling.
 *
 *	Step 4:  While the receiver is still settling on the current
 *		 frequency and mode, send the next frequency and mode to the
 *		 receiver using the TRANSFER NEXT FREQUENCY/MODE command.
 *
 *	Step 5:  Wait for the receiver to finish settling.  The total
 *		 settling time, including sending the next frequency and
 *		 mode, is 20 milliseconds (0.02 seconds).
 *
 *	Step 6:  Check the squelch status by reading the DCD interface
 *		 signal.  If the squelch is open, scanning is stopped.
 *		 Otherwise, scanning continues.  Optionally, the status of
 *		 the CTCSS/DCS/DTMF decoder can be checked, and the
 *		 appropriate action taken.
 *
 *	Step 7:  Continuously repeat steps 3 through 6 above.
 */
int optoscan_scan(RIG *rig, vfo_t vfo, scan_t scan, int ch)
{
	pltstate_t *state;
	pltune_cb_t cb;
	int rc, pin_state;
	struct rig_state *rs;

	if (scan != RIG_SCAN_PLT)
		return -RIG_ENAVAIL;

	rs = &rig->state;
	cb = rig->callbacks.pltune;
	state = ((struct icom_priv_data *)rs->priv)->pltstate;

	if (state == NULL)
		return -RIG_EINTERNAL;

	if (state->freq == 0) { /* pltstate_t is not initialized - perform setup */
		/* time for CIV command to be sent. this is subtracted from */
		/* rcvr settle time */
		state->usleep_time = (1000000 / (rig->state.rigport.parm.serial.rate))
				     * 13 * 9;

		rc = cb(rig, vfo, &(state->next_freq), &(state->next_mode),
			&(state->next_width), rig->callbacks.pltune_arg);

		if (rc == RIG_SCAN_STOP)
			return RIG_OK; /* callback halted loop */

		/* Step 1 is implicit, since hamlib does this when it opens the device */
		optoscan_send_freq(rig, state); /*Step 2*/
	}

	rc = !RIG_SCAN_STOP;

	while (rc != RIG_SCAN_STOP) {
		optoscan_RTS_toggle(rig); /*Step 3*/

		state->freq = state->next_freq;
		state->mode = state->next_mode;

		optoscan_start_timer(rig, state);

		rc = cb(rig, vfo, &(state->next_freq), &(state->next_mode),
			&(state->next_width), rig->callbacks.pltune_arg);

		if (rc != RIG_SCAN_STOP) {
			optoscan_send_freq(rig, state); /*Step 4*/
		}

		optoscan_wait_timer(rig, state); /*Step 5*/

		ser_get_car(&rs->rigport, &pin_state);

		if (pin_state) { /*Step 6*/
			return RIG_OK; /* we've broken squelch - return(). caller can */
			/* get current freq & mode out of state str    */
		}
	}

	/* exiting pipeline loop - force state init on next call */
	state->freq = 0;

	return RIG_OK;
}

/*
 * Assumes rig!=NULL, status_block !=NULL
 */
static int optoscan_get_status_block(RIG *rig, struct optostat *status_block)
{
	int retval, ack_len, expected_len;
	unsigned char ackbuf[MAXFRAMELEN];

	memset(status_block, 0, sizeof(struct optostat));

	retval = icom_transaction(rig, C_CTL_MISC, S_OPTO_RDSTAT, NULL, 0,
				  ackbuf, &ack_len);

	if (retval != RIG_OK)
		return retval;

	switch (rig->caps->rig_model) {
	case RIG_MODEL_OS456:
		expected_len = 4;
		break;

	case RIG_MODEL_OS535:
		expected_len = 5;
		break;

	default:
		rig_debug(RIG_DEBUG_ERR, "optoscan_get_status_block: unknown rig model");
		return -RIG_ERJCTED;
		break;
	}

	if (ack_len != expected_len) {
		rig_debug(RIG_DEBUG_ERR, "optoscan_get_status_block: ack NG (%#.2x), "
			  "len=%d\n", ackbuf[0], ack_len);
		return -RIG_ERJCTED;
	}

	if (ackbuf[2] & 1)  status_block->remote_control = 1;

	if (ackbuf[2] & 2)  status_block->DTMF_pending = 1;

	if (ackbuf[2] & 4)  status_block->DTMF_overrun = 1;

	if (ackbuf[2] & 16) status_block->squelch_open = 1;

	if (ackbuf[2] & 32) status_block->CTCSS_active = 1;

	if (ackbuf[2] & 64) status_block->DCS_active = 1;

	if (ackbuf[3] & 1)  status_block->tape_enabled = 1;

	if (ackbuf[3] & 2)  status_block->speaker_enabled = 1;

	if (ackbuf[3] & 4)  status_block->fivekhz_enabled = 1;

	if (ackbuf[3] & 16) status_block->audio_present = 1;

	rig_debug(RIG_DEBUG_VERBOSE, "remote_control     = %d\n", status_block->remote_control);
	rig_debug(RIG_DEBUG_VERBOSE, "DTMF_pending       = %d\n", status_block->DTMF_pending);
	rig_debug(RIG_DEBUG_VERBOSE, "DTMF_overrun       = %d\n", status_block->DTMF_overrun);
	rig_debug(RIG_DEBUG_VERBOSE, "squelch_open       = %d\n", status_block->squelch_open);
	rig_debug(RIG_DEBUG_VERBOSE, "CTCSS_active       = %d\n", status_block->CTCSS_active);
	rig_debug(RIG_DEBUG_VERBOSE, "DCS_active         = %d\n", status_block->DCS_active);
	rig_debug(RIG_DEBUG_VERBOSE, "tape_enabled       = %d\n", status_block->tape_enabled);
	rig_debug(RIG_DEBUG_VERBOSE, "speaker_enabled    = %d\n", status_block->speaker_enabled);
	rig_debug(RIG_DEBUG_VERBOSE, "fivekhz_enabled    = %d\n", status_block->fivekhz_enabled);
	rig_debug(RIG_DEBUG_VERBOSE, "audio_present      = %d\n", status_block->audio_present);

	return RIG_OK;
}


static int optoscan_send_freq(RIG *rig, pltstate_t *state)
{
	unsigned char buff[OPTO_BUFF_SIZE];
	char md, pd;
	freq_t freq;
	rmode_t mode;

	freq = state->next_freq;
	mode = state->next_mode;

	memset(buff, 0, OPTO_BUFF_SIZE);

	to_bcd(buff, freq, 5 * 2); /* to_bcd requires nibble len */

	rig2icom_mode(rig, mode, 0, (unsigned char *) &md, (signed char *) &pd);
	buff[5] = md;

	/* read echo'd chars only...there will be no ACK from this command
	 *
	 * Note:
	 *	It may have waited fro pltstate->usleep_time before reading the echo'd
	 *	chars, but the read will be blocking anyway. --SF
	 * */
	return icom_transaction(rig, C_CTL_MISC, S_OPTO_NXT, buff, 6, NULL, NULL);

	return RIG_OK;
}

static int optoscan_RTS_toggle(RIG *rig)
{
	struct rig_state *rs;
	int state = 0;

	rs = &rig->state;
	ser_get_rts(&rs->rigport, &state);
	ser_set_rts(&rs->rigport, !state);

	return RIG_OK;
}

static int optoscan_start_timer(RIG *rig, pltstate_t *state)
{
	gettimeofday(&(state->timer_start), NULL);

	return RIG_OK;
}

static int optoscan_wait_timer(RIG *rig, pltstate_t *state)
{
	struct icom_priv_caps *priv_caps;
	int usec_diff;
	int settle_usec;

	priv_caps = (struct icom_priv_caps *)rig->caps->priv;
	settle_usec = priv_caps->settle_time * 1000; /*convert settle time (ms) to */
	/* settle time (usec)         */

	gettimeofday(&(state->timer_current), NULL);

	usec_diff = (int)labs((state->timer_current.tv_usec) -
			(state->timer_start.tv_usec));

	if (usec_diff < settle_usec) {
		usleep(settle_usec - usec_diff);   /* sleep balance of settle_time */
	}

	return RIG_OK;
}