2005-11-01 23:02:02 +00:00
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/*
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2006-10-15 00:27:52 +00:00
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* Hamlib Interface - USB communication low-level support
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2005-11-01 23:02:02 +00:00
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* Copyright (c) 2000-2005 by Stephane Fillod
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*
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2006-10-15 00:27:52 +00:00
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* $Id: usb_port.c,v 1.4 2006-10-15 00:27:52 aa6e Exp $
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2005-11-01 23:02:02 +00:00
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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2006-10-15 00:27:52 +00:00
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/**
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* \addtogroup rig_internal
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* @{
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*/
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/**
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* \brief USB IO
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* \file usb_port.c
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*
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* doc todo: deal with defined(HAVE_LIBUSB)... quashing the doc process.
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*/
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2005-11-01 23:02:02 +00:00
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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2005-11-19 14:41:37 +00:00
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#include <hamlib/rig.h>
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2005-11-01 23:02:02 +00:00
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/*
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2006-02-20 22:41:17 +00:00
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* Compile only if libusb is available
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2005-11-01 23:02:02 +00:00
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*/
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2005-11-19 14:41:37 +00:00
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#if defined(HAVE_LIBUSB) && defined(HAVE_USB_H)
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2005-11-01 23:02:02 +00:00
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#include <stdlib.h>
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#include <stdio.h> /* Standard input/output definitions */
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#include <string.h> /* String function definitions */
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#include <unistd.h> /* UNIX standard function definitions */
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#include <errno.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <usb.h>
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#include "usb_port.h"
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2006-10-15 00:27:52 +00:00
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/**
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* \brief Find USB device
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* \param port
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* \return usb_device
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*/
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2005-11-01 23:02:02 +00:00
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struct usb_device * find_device(const hamlib_port_t *port)
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{
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struct usb_bus *p;
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struct usb_device *q;
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p = usb_get_busses();
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while (p != NULL){
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q = p->devices;
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while (q != NULL){
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if (q->descriptor.idVendor == port->parm.usb.vid &&
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q->descriptor.idProduct == port->parm.usb.pid) {
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return q;
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}
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q = q->next;
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}
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p = p->next;
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}
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return NULL; /* not found */
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}
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int usb_port_open(hamlib_port_t *port)
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{
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struct usb_dev_handle *udh;
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struct usb_device *dev;
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if (!port->pathname)
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return -RIG_EINVAL;
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usb_init (); /* usb library init */
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usb_find_busses ();
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dev = find_device(port);
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if (dev == 0)
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return -RIG_EIO;
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udh = usb_open (dev);
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if (udh == 0)
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return -RIG_EIO;
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if (dev != usb_device (udh)){
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rig_debug(RIG_DEBUG_ERR, "%s:%d: internal error!\n", __FILE__, __LINE__);
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return -RIG_EINTERNAL;
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}
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if (usb_set_configuration (udh, port->parm.usb.conf) < 0){
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rig_debug(RIG_DEBUG_ERR, "%s: usb_claim_interface: failed conf %d: %s\n",
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__FUNCTION__,port->parm.usb.conf, usb_strerror());
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usb_close (udh);
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return 0;
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}
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if (usb_claim_interface (udh, port->parm.usb.iface) < 0){
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rig_debug(RIG_DEBUG_ERR, "%s:usb_claim_interface: failed interface %d: %s\n",
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__FUNCTION__,port->parm.usb.iface, usb_strerror());
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usb_close (udh);
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return 0;
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}
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if (usb_set_altinterface (udh, port->parm.usb.alt) < 0){
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fprintf (stderr, "%s:usb_set_alt_interface: failed: %s\n", __FUNCTION__,
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usb_strerror());
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usb_release_interface (udh, port->parm.usb.iface);
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usb_close (udh);
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return 0;
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}
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port->handle = (void*) udh;
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return RIG_OK;
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}
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int usb_port_close(hamlib_port_t *port)
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{
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struct usb_dev_handle *udh = port->handle;
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/* we're assuming that closing an interface automatically releases it. */
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return usb_close (udh) == 0 ? RIG_OK : -RIG_EIO;
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}
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2005-11-19 14:41:37 +00:00
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#else
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int usb_port_open(hamlib_port_t *port)
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{
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return -RIG_ENAVAIL;
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}
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int usb_port_close(hamlib_port_t *port)
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{
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return -RIG_ENAVAIL;
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}
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#endif /* defined(HAVE_LIBUSB) && defined(HAVE_USB_H) */
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2006-10-15 00:27:52 +00:00
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/** @} */
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