Hamlib/kit/funcube.c

/*
 *  Hamlib KIT backend - FUNcube Dongle USB tuner description
 *  Copyright (c) 2009-2011 by Stephane Fillod
 *
 *  Derived from usbsoftrock-0.5:
 *  Copyright (C) 2009 Andrew Nilsson (andrew.nilsson@gmail.com)
 *
 *  Author: Stefano Speretta, Innovative Solutions In Space BV
 *
 *   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

#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include "hamlib/rig.h"
#include "token.h"

#include "kit.h"

/*
 * Compile this model only if libusb is available
 */
#if defined(HAVE_LIBUSB) && (defined(HAVE_LIBUSB_H) || defined(HAVE_LIBUSB_1_0_LIBUSB_H))

#include <errno.h>

#ifdef HAVE_LIBUSB_H
# include <libusb.h>
#elif defined HAVE_LIBUSB_1_0_LIBUSB_H
# include <libusb-1.0/libusb.h>
#endif

#include "funcube.h"

static int funcube_init(RIG *rig);
static int funcubeplus_init(RIG *rig);
static int funcube_cleanup(RIG *rig);
static int funcube_set_freq(RIG *rig, vfo_t vfo, freq_t freq);
static int funcube_get_freq(RIG *rig, vfo_t vfo, freq_t *freq);
static int funcube_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val);
static int funcube_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val);
static const char *funcube_get_info(RIG *rig);

static const struct confparams funcube_cfg_params[] = {
	{ RIG_CONF_END, NULL, }
};

// functions used set / read frequency, working on FUNcube version 0 and 1
int set_freq_v0(libusb_device_handle *udh, unsigned int f, int timeout);
int set_freq_v1(libusb_device_handle *udh, unsigned int f, int timeout);

/*
 * Common data struct
 */
struct funcube_priv_data {

	freq_t freq;	/* Hz */
};

/*
 * FUNcube Dongle description
 *
 * Based on Jan Axelson HID examples
 *   http://www.lvr.com/
 *
 */

const struct rig_caps funcube_caps = {
	.rig_model =		RIG_MODEL_FUNCUBEDONGLE,
	.model_name =		"FUNcube Dongle",
	.mfg_name =		"AMSAT-UK",
	.version =		"0.3",
	.copyright =		"LGPL",
	.status =		RIG_STATUS_BETA,
	.rig_type =		RIG_TYPE_TUNER,
	.ptt_type =		RIG_PTT_RIG,
	.dcd_type =		RIG_DCD_NONE,
	.port_type =		RIG_PORT_USB,
	.write_delay =		0,
	.post_write_delay =	0,
	.timeout =		1000,
	.retry =		0,

	.has_get_func =		RIG_FUNC_NONE,
	.has_set_func =		RIG_FUNC_NONE,
	.has_get_level =	RIG_LEVEL_ATT | RIG_LEVEL_STRENGTH | RIG_LEVEL_PREAMP,
	.has_set_level =	RIG_LEVEL_ATT | RIG_LEVEL_PREAMP,
	.has_get_parm =		RIG_PARM_NONE,
	.has_set_parm =		RIG_PARM_NONE,
	.level_gran =		{},
	.parm_gran =		{},
	.ctcss_list =		NULL,
	.dcs_list =		NULL,
	.preamp =		{ 5, 10, 15, 20, 25, 30, RIG_DBLST_END, },
	.attenuator =		{ 2, 5, RIG_DBLST_END, },
	.max_rit =		Hz(0),
	.max_xit =		Hz(0),
	.max_ifshift =		Hz(0),
	.targetable_vfo =	0,
	.transceive =		RIG_TRN_OFF,
	.bank_qty =		0,
	.chan_desc_sz =		0,

	.chan_list =		{ RIG_CHAN_END, },

	.rx_range_list1 = {
		{MHz(50), MHz(2500), RIG_MODE_USB, -1, -1, RIG_VFO_A},
		RIG_FRNG_END,
	},
	.tuning_steps = {
		{RIG_MODE_USB, kHz(1)},
		RIG_TS_END,
	},
	.filters = {
		{RIG_MODE_USB, kHz(192)},
		RIG_FLT_END,
	},
	.cfgparams =		funcube_cfg_params,

	.rig_init =		funcube_init,
	.rig_cleanup =		funcube_cleanup,
	.set_freq =		funcube_set_freq,
	.get_freq =		funcube_get_freq,
	.get_level =		funcube_get_level,
	.set_level =		funcube_set_level,
	.get_info =		funcube_get_info,
};


const struct rig_caps funcubeplus_caps = {
	.rig_model =		RIG_MODEL_FUNCUBEDONGLEPLUS,
	.model_name =		"FUNcube Dongle Pro+",
	.mfg_name =		"AMSAT-UK",
	.version =		"0.3",
	.copyright =		"LGPL",
	.status =		RIG_STATUS_BETA,
	.rig_type =		RIG_TYPE_TUNER,
	.ptt_type =		RIG_PTT_RIG,
	.dcd_type =		RIG_DCD_NONE,
	.port_type =		RIG_PORT_USB,
	.write_delay =		0,
	.post_write_delay =	0,
	.timeout =		1000,
	.retry =		0,

	.has_get_func =		RIG_FUNC_NONE,
	.has_set_func =		RIG_FUNC_NONE,
	.has_get_level =	RIG_LEVEL_ATT | RIG_LEVEL_STRENGTH | RIG_LEVEL_PREAMP,
	.has_set_level =	RIG_LEVEL_ATT | RIG_LEVEL_PREAMP,
	.has_get_parm =		RIG_PARM_NONE,
	.has_set_parm =		RIG_PARM_NONE,
	.level_gran =		{},
	.parm_gran =		{},
	.ctcss_list =		NULL,
	.dcs_list =		NULL,
	.preamp =		{ 5, 10, 15, 20, 25, 30, RIG_DBLST_END, },
	.attenuator =		{ 2, 5, RIG_DBLST_END, },
	.max_rit =		Hz(0),
	.max_xit =		Hz(0),
	.max_ifshift =		Hz(0),
	.targetable_vfo =	0,
	.transceive =		RIG_TRN_OFF,
	.bank_qty =		0,
	.chan_desc_sz =		0,

	.chan_list = { RIG_CHAN_END, },

	.rx_range_list1 = {
		{kHz(150), MHz(1900), RIG_MODE_USB, -1, -1, RIG_VFO_A},
		RIG_FRNG_END,
	},
	.tuning_steps = {
		{RIG_MODE_USB, kHz(1)},
		RIG_TS_END,
	},
	.filters = {
		{RIG_MODE_USB, kHz(192)},
		RIG_FLT_END,
	},
	.cfgparams =		funcube_cfg_params,

	.rig_init =		funcubeplus_init,
	.rig_cleanup =		funcube_cleanup,
	.set_freq =		funcube_set_freq,
	.get_freq =		funcube_get_freq,
	.get_level =		funcube_get_level,
	.set_level =		funcube_set_level,
	.get_info =		funcube_get_info,
};

int funcube_init(RIG *rig)
{
	hamlib_port_t *rp = &rig->state.rigport;
	struct funcube_priv_data *priv;

	priv = (struct funcube_priv_data *)calloc(sizeof(struct funcube_priv_data), 1);

	if (!priv) {
		/* whoops! memory shortage! */
		return -RIG_ENOMEM;
	}

	priv->freq = 0;

	rp->parm.usb.vid = VID;
	rp->parm.usb.pid = PID;
	rp->parm.usb.conf = FUNCUBE_CONFIGURATION;
	rp->parm.usb.iface = FUNCUBE_INTERFACE;
	rp->parm.usb.alt = FUNCUBE_ALTERNATIVE_SETTING;

	rp->parm.usb.vendor_name = VENDOR_NAME;
	rp->parm.usb.product = PRODUCT_NAME;

	rig->state.priv = (void *)priv;

	return RIG_OK;
}

int funcubeplus_init(RIG *rig)
{
	hamlib_port_t *rp = &rig->state.rigport;
	struct funcube_priv_data *priv;

	priv = (struct funcube_priv_data *)calloc(sizeof(struct funcube_priv_data), 1);

	if (!priv) {
		/* whoops! memory shortage! */
		return -RIG_ENOMEM;
	}

	priv->freq = 0;

	rp->parm.usb.vid = VID;
	rp->parm.usb.pid = PIDPLUS;
	rp->parm.usb.conf = FUNCUBE_CONFIGURATION;
	rp->parm.usb.iface = FUNCUBE_INTERFACE;
	rp->parm.usb.alt = FUNCUBE_ALTERNATIVE_SETTING;

	rp->parm.usb.vendor_name = VENDOR_NAME;
	rp->parm.usb.product = PRODUCT_NAMEPLUS;

	rig->state.priv = (void *)priv;

	return RIG_OK;
}

int funcube_cleanup(RIG *rig)
{
	if (!rig)
		return -RIG_EINVAL;

	if (rig->state.priv)
		free(rig->state.priv);

	rig->state.priv = NULL;

	return RIG_OK;
}

/* Rem: not reentrant */
const char *funcube_get_info(RIG *rig)
{
	static char buf[64];
	libusb_device_handle *udh = rig->state.rigport.handle;
	struct libusb_device_descriptor desc;

	/* always succeeds since libusb-1.0.16 */
	libusb_get_device_descriptor(libusb_get_device(udh), &desc);

	sprintf(buf, "Dev %04d", desc.bcdDevice);

	return buf;
}

int set_freq_v0(libusb_device_handle *udh, unsigned int f, int timeout)
{
	int ret;
	int actual_length;

	unsigned char au8BufOut[64]; // endpoint size
	unsigned char au8BufIn[64];  // endpoint size

	// frequency is in Hz, while the dongle expects it in kHz
	f = f / 1000;

	au8BufOut[0] = REQUEST_SET_FREQ; // Command to Set Frequency on dongle
	au8BufOut[1] = (unsigned char)f;
	au8BufOut[2] = (unsigned char)(f >> 8);
	au8BufOut[3] = (unsigned char)(f >> 16);

	rig_debug(RIG_DEBUG_TRACE, "%s: HID packet set to %02x%02x%02x%02x\n",
		  __func__, au8BufOut[0] & 0xFF, au8BufOut[1] & 0xFF, au8BufOut[2] & 0xFF, au8BufOut[3] & 0xFF);

	ret = libusb_interrupt_transfer(udh, OUTPUT_ENDPOINT, au8BufOut, sizeof(au8BufOut), &actual_length, timeout);

	if (ret < 0) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret, libusb_error_name(ret));
		return -RIG_EIO;
	}

	ret = libusb_interrupt_transfer(udh, INPUT_ENDPOINT, au8BufIn, sizeof(au8BufIn), &actual_length, timeout);

	if (ret < 0 || actual_length != sizeof(au8BufIn)) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret, libusb_error_name(ret));
		return -RIG_EIO;
	}

	rig_debug(RIG_DEBUG_TRACE, "%s: Answer buf=%02x%02x\n",
		  __func__, au8BufIn[0] & 0xFF, au8BufIn[1] & 0xFF);

	if (au8BufIn[1] != FUNCUBE_SUCCESS) {
		rig_debug(RIG_DEBUG_ERR, "%s: REQUEST_SET_FREQ not supported\n",
			  __func__);
		return -RIG_EIO;
	}

	return RIG_OK;
}

int set_freq_v1(libusb_device_handle *udh, unsigned int f, int timeout)
{
	int ret;
	int actual_length;

	unsigned char au8BufOut[64]; // endpoint size
	unsigned char au8BufIn[64];  // endpoint size

	au8BufOut[0] = REQUEST_SET_FREQ_HZ; // Command to Set Frequency in Hz on dongle
	au8BufOut[1] = (unsigned char)f;
	au8BufOut[2] = (unsigned char)(f >> 8);
	au8BufOut[3] = (unsigned char)(f >> 16);
	au8BufOut[4] = (unsigned char)(f >> 24);

	rig_debug(RIG_DEBUG_TRACE, "%s: HID packet set to %02x%02x%02x%02x%02x\n",
		  __func__, au8BufOut[0] & 0xFF, au8BufOut[1] & 0xFF, au8BufOut[2] & 0xFF, au8BufOut[3] & 0xFF,
		  au8BufOut[4] & 0xFF);

	ret = libusb_interrupt_transfer(udh, OUTPUT_ENDPOINT, au8BufOut, sizeof(au8BufOut), &actual_length, timeout);

	if (ret < 0) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
		return -RIG_EIO;
	}

	ret = libusb_interrupt_transfer(udh, INPUT_ENDPOINT, au8BufIn, sizeof(au8BufIn), &actual_length, timeout);

	if (ret < 0 || actual_length != sizeof(au8BufIn)) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
		return -RIG_EIO;
	}

	rig_debug(RIG_DEBUG_TRACE, "%s: Answer buf=%02x%02x%02x%02x%02x%02x\n",
		  __func__, au8BufIn[0] & 0xFF, au8BufIn[1] & 0xFF, au8BufIn[2] & 0xFF, au8BufIn[3] & 0xFF,
		  au8BufIn[4] & 0xFF, au8BufIn[5] & 0xFF);

	if (au8BufIn[1] != FUNCUBE_SUCCESS) {
		rig_debug(RIG_DEBUG_ERR, "%s: REQUEST_SET_FREQ_HZ not supported\n",
			  __func__);
		return -RIG_EIO;
	}

	return RIG_OK;
}

int funcube_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
{
	struct funcube_priv_data *priv = (struct funcube_priv_data *)rig->state.priv;
	libusb_device_handle *udh = rig->state.rigport.handle;
	int ret;

	if ((ret = set_freq_v1(udh, freq, rig->state.rigport.timeout)) != RIG_OK) {
		if ((ret = set_freq_v0(udh, freq, rig->state.rigport.timeout)) == RIG_OK) {
			priv->freq = freq;
		}
	} else {
		priv->freq = freq;
	}

	return ret;
}

int get_freq_v0(RIG *rig, vfo_t vfo, freq_t *freq)
{
	struct funcube_priv_data *priv = (struct funcube_priv_data *)rig->state.priv;

	rig_debug(RIG_DEBUG_TRACE, "%s: frequency is not read from the device, the value shown is the last successfully set.\n", __func__);
	*freq = priv->freq;

	return RIG_OK;
}

int get_freq_v1(RIG *rig, vfo_t vfo, freq_t *freq)
{
	libusb_device_handle *udh = rig->state.rigport.handle;
	int ret;
	unsigned int f;
	int actual_length;

	unsigned char au8BufOut[64]; // endpoint size
	unsigned char au8BufIn[64];  // endpoint size

	au8BufOut[0] = REQUEST_GET_FREQ_HZ; // Command to Set Frequency on dongle

	rig_debug(RIG_DEBUG_TRACE, "%s: HID packet set to %02x%02x%02x%02x\n",
		  __func__, au8BufOut[0] & 0xFF, au8BufOut[1] & 0xFF, au8BufOut[2] & 0xFF, au8BufOut[3] & 0xFF);

	ret = libusb_interrupt_transfer(udh, OUTPUT_ENDPOINT, au8BufOut, sizeof(au8BufOut), &actual_length, rig->state.rigport.timeout);

	if (ret < 0) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
	}

	ret = libusb_interrupt_transfer(udh, INPUT_ENDPOINT, au8BufIn, sizeof(au8BufIn), &actual_length, rig->state.rigport.timeout);

	if (ret < 0 || actual_length != sizeof(au8BufIn)) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
	}

	rig_debug(RIG_DEBUG_TRACE, "%s: Answer buf=%02x%02x%02x%02x%02x%02x\n",
		  __func__, au8BufIn[0] & 0xFF, au8BufIn[1] & 0xFF, au8BufIn[2] & 0xFF, au8BufIn[3] & 0xFF,
		  au8BufIn[4] & 0xFF, au8BufIn[5] & 0xFF);

	if (au8BufIn[1] != FUNCUBE_SUCCESS) {
		rig_debug(RIG_DEBUG_ERR, "%s: REQUEST_GET_FREQ_HZ not supported\n",
			  __func__);
		return -RIG_EIO;
	}

	f = (au8BufIn[2] & 0xFF) | ((au8BufIn[3] & 0xFF) << 8) |
	    ((au8BufIn[4] & 0xFF) << 16) | ((au8BufIn[5] & 0xFF) << 24),

	    *freq = f;

	return RIG_OK;
}

int funcube_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
{
	int ret;

	if ((ret = get_freq_v1(rig, vfo, freq)) != RIG_OK) {
		ret = get_freq_v0(rig, vfo, freq);
	}

	return ret;
}

int funcube_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
{
	libusb_device_handle *udh = rig->state.rigport.handle;
	int ret;
	int actual_length;
	unsigned char au8BufOut[64]; // endpoint size
	unsigned char au8BufIn[64];  // endpoint size

	switch (level) {
	case RIG_LEVEL_PREAMP:
		au8BufOut[0] = REQUEST_SET_LNA_GAIN; // Command to Set LNA gain

		switch (val.i) {
		case 5:
			au8BufOut[1] = 6;
			break;

		case 10:
			au8BufOut[1] = 8;
			break;

		case 15:
			au8BufOut[1] = 10;
			break;

		case 20:
			au8BufOut[1] = 12;
			break;

		case 25:
			au8BufOut[1] = 13;
			break;

		case 30:
			au8BufOut[1] = 14;
			break;

		default:
			au8BufOut[1] = 4;
		}

		break;

	case RIG_LEVEL_ATT:
		au8BufOut[0] = REQUEST_SET_LNA_GAIN; // Command to Set LNA gain

		switch (val.i) {
		case 2:
			au8BufOut[1] = 1;
			break;

		case 5:
			au8BufOut[1] = 0;
			break;

		default:
			au8BufOut[1] = 4;
		}

		break;

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

	rig_debug(RIG_DEBUG_TRACE, "%s: HID packet set to %02x%02x%02x%02x\n",
		  __func__, au8BufOut[0] & 0xFF, au8BufOut[1] & 0xFF, au8BufOut[2] & 0xFF, au8BufOut[3] & 0xFF);

	ret = libusb_interrupt_transfer(udh, OUTPUT_ENDPOINT, au8BufOut, sizeof(au8BufOut), &actual_length, rig->state.rigport.timeout);

	if (ret < 0) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
	}

	ret = libusb_interrupt_transfer(udh, INPUT_ENDPOINT, au8BufIn, sizeof(au8BufIn), &actual_length, rig->state.rigport.timeout);

	if (ret < 0 || actual_length != sizeof(au8BufIn)) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
	}

	rig_debug(RIG_DEBUG_TRACE, "%s: Answer buf=%02x%02x\n",
		  __func__, au8BufIn[0] & 0xFF, au8BufIn[1] & 0xFF);

	if (au8BufIn[1] != FUNCUBE_SUCCESS) {
		rig_debug(RIG_DEBUG_ERR, "%s: REQUEST_GET_FREQ_HZ not supported\n",
			  __func__);
		return -RIG_EIO;
	}

	return RIG_OK;
}
int funcube_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
{
	libusb_device_handle *udh = rig->state.rigport.handle;
	int ret;
	int actual_length;
	unsigned char au8BufOut[64]; // endpoint size
	unsigned char au8BufIn[64];  // endpoint size

	switch (level) {
	case RIG_LEVEL_ATT:
	case RIG_LEVEL_PREAMP:
		au8BufOut[0] = REQUEST_GET_LNA_GAIN; // Command to Get LNA / ATT gain
		break;

	case RIG_LEVEL_STRENGTH:
		au8BufOut[0] = REQUEST_GET_RSSI;
		break;

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

	rig_debug(RIG_DEBUG_TRACE, "%s: HID packet set to %02x%02x%02x%02x\n",
		  __func__, au8BufOut[0] & 0xFF, au8BufOut[1] & 0xFF, au8BufOut[2] & 0xFF, au8BufOut[3] & 0xFF);

	ret = libusb_interrupt_transfer(udh, OUTPUT_ENDPOINT, au8BufOut, sizeof(au8BufOut), &actual_length, rig->state.rigport.timeout);

	if (ret < 0) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
	}

	ret = libusb_interrupt_transfer(udh, INPUT_ENDPOINT, au8BufIn, sizeof(au8BufIn), &actual_length, rig->state.rigport.timeout);

	if (ret < 0 || actual_length != sizeof(au8BufIn)) {
		rig_debug(RIG_DEBUG_ERR, "%s: libusb_interrupt_transfer failed (%d): %s\n",
			  __func__, ret,
			  libusb_error_name(ret));
	}

	rig_debug(RIG_DEBUG_TRACE, "%s: Answer buf=%02x%02x%02x\n",
		  __func__, au8BufIn[0] & 0xFF, au8BufIn[1] & 0xFF, au8BufIn[2] & 0xFF);

	if (au8BufIn[1] != FUNCUBE_SUCCESS) {
		rig_debug(RIG_DEBUG_ERR, "%s: REQUEST_GET_FREQ_HZ not supported\n",
			  __func__);
		return -RIG_EIO;
	}

	switch (level) {
	case RIG_LEVEL_PREAMP:
		switch (au8BufIn[2]) {
		case 6:
			val->i = 5;
			break;

		case 8:
			val->i = 10;
			break;

		case 10:
			val->i = 15;
			break;

		case 12:
			val->i = 20;
			break;

		case 13:
			val->i = 25;
			break;

		case 14:
			val->i = 30;
			break;

		default:
			val->i = 0;
		}

		break;

	case RIG_LEVEL_ATT:
		switch (au8BufIn[2]) {
		case 0:
			val->i = 5;
			break;

		case 1:
			val->i = 2;
			break;

		default:
			val->i = 0;
		}

		break;

	case RIG_LEVEL_STRENGTH:
		val->i = (int)((float)au8BufIn[2] * 2.8 - 35);
		break;

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

	return RIG_OK;
}
#endif	/* defined(HAVE_LIBUSB) && defined(HAVE_LIBUSB_H) */