kopia lustrzana https://github.com/Hamlib/Hamlib
411 wiersze
10 KiB
C
411 wiersze
10 KiB
C
/*
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* Hamlib Interface - USB communication low-level support
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* Copyright (c) 2000-2011 by Stephane Fillod
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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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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#include <hamlib/config.h>
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#include <stdlib.h>
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#include <string.h> /* String function definitions */
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#include <sys/types.h>
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#include <hamlib/rig.h>
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#ifdef HAVE_LIBUSB_H
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# include <libusb.h>
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#elif defined HAVE_LIBUSB_1_0_LIBUSB_H
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# include <libusb-1.0/libusb.h>
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#endif
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#include "usb_port.h"
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/*
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* Compile only if libusb is available
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*/
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#if defined(HAVE_LIBUSB) && (defined(HAVE_LIBUSB_H) || defined(HAVE_LIBUSB_1_0_LIBUSB_H))
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/**
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* \brief Find and open USB device
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* \param port
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* \return usb_handle
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*/
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static libusb_device_handle *find_and_open_device(const hamlib_port_t *port)
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{
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libusb_device_handle *udh = NULL;
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libusb_device *dev, **devs;
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struct libusb_device_descriptor desc;
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char string[256];
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int i, r;
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rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
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rig_debug(RIG_DEBUG_VERBOSE,
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"%s: looking for device %04x:%04x...",
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__func__,
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port->parm.usb.vid,
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port->parm.usb.pid);
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r = libusb_get_device_list(NULL, &devs);
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if (r < 0)
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{
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rig_debug(RIG_DEBUG_ERR,
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"%s: failed getting usb device list: %s",
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__func__,
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libusb_error_name(r));
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return NULL;
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}
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for (i = 0; (dev = devs[i]) != NULL; i++)
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{
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libusb_get_device_descriptor(dev, &desc);
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rig_debug(RIG_DEBUG_VERBOSE,
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" %04x:%04x,",
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desc.idVendor,
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desc.idProduct);
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if (desc.idVendor == port->parm.usb.vid
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&& desc.idProduct == port->parm.usb.pid)
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{
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/* we need to open the device in order to query strings */
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r = libusb_open(dev, &udh);
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if (r < 0)
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{
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rig_debug(RIG_DEBUG_WARN,
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"%s: Warning: Cannot open USB device: %s\n",
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__func__,
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libusb_error_name(r));
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continue;
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}
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/* now check whether the names match: */
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if (port->parm.usb.vendor_name)
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{
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string[0] = '\0';
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r = libusb_get_string_descriptor_ascii(udh,
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desc.iManufacturer,
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(unsigned char *)string,
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sizeof(string));
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if (r < 0)
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{
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rig_debug(RIG_DEBUG_WARN,
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"Warning: cannot query manufacturer for USB device: %s\n",
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libusb_error_name(r));
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libusb_close(udh);
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continue;
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}
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rig_debug(RIG_DEBUG_VERBOSE, " vendor >%s<", string);
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if (strcmp(string, port->parm.usb.vendor_name) != 0)
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{
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rig_debug(RIG_DEBUG_WARN,
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"%s: Warning: Vendor name string mismatch!\n",
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__func__);
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libusb_close(udh);
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continue;
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}
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}
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if (port->parm.usb.product)
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{
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string[0] = '\0';
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r = libusb_get_string_descriptor_ascii(udh,
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desc.iProduct,
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(unsigned char *)string,
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sizeof(string));
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if (r < 0)
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{
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rig_debug(RIG_DEBUG_WARN,
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"Warning: cannot query product for USB device: %s\n",
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libusb_error_name(r));
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libusb_close(udh);
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continue;
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}
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rig_debug(RIG_DEBUG_VERBOSE, " product >%s<", string);
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if (strcmp(string, port->parm.usb.product) != 0)
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{
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/* Now testing with strncasecmp() for case insensitive
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* match. Updating firmware on FUNcube Dongle to v18f resulted
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* in product string changing from "FunCube Dongle" to
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* "FUNcube Dongle". As new dongles are shipped with
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* older firmware, both product strings are valid. Sigh...
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*/
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if (strncasecmp(string,
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port->parm.usb.product,
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sizeof(port->parm.usb.product) - 1) != 0)
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{
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rig_debug(RIG_DEBUG_WARN,
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"%s: Warning: Product string mismatch!\n",
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__func__);
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libusb_close(udh);
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continue;
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}
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}
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}
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libusb_free_device_list(devs, 1);
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rig_debug(RIG_DEBUG_VERBOSE, "%s", " -> found\n");
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return udh;
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}
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}
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libusb_free_device_list(devs, 1);
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rig_debug(RIG_DEBUG_VERBOSE, "%s", " -> not found\n");
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return NULL; /* not found */
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}
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/**
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* \brief Open hamlib_port of USB device
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* \param port
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* \return status
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*/
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int usb_port_open(hamlib_port_t *port)
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{
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static char pathname[HAMLIB_FILPATHLEN];
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libusb_device_handle *udh;
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char *p, *q;
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int r;
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rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
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/* init default libusb-1.0 library contexte, if needed */
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r = libusb_init(NULL);
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if (r < 0)
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{
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rig_debug(RIG_DEBUG_ERR,
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"%s: libusb_init failed: %s\n",
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__func__,
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libusb_error_name(r));
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return -RIG_EIO;
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}
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//libusb_set_debug(NULL, 1);
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/* Extract VID/PID/Vendor/Product name from pathname. */
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/* Duplicate the string since we may modify it. */
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strncpy(pathname, port->pathname, sizeof pathname);
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pathname[HAMLIB_FILPATHLEN - 1] = '\0';
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p = pathname;
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q = strchr(p, ':');
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if (q)
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{
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++q;
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port->parm.usb.vid = strtol(q, NULL, 16);
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p = q;
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q = strchr(p, ':');
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if (q)
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{
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++q;
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port->parm.usb.pid = strtol(q, NULL, 16);
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p = q;
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q = strchr(p, ':');
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if (q)
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{
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++q;
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port->parm.usb.vendor_name = q;
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p = q;
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q = strchr(p, ':');
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if (q)
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{
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*q++ = '\0';
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port->parm.usb.product = q;
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}
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}
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}
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}
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udh = find_and_open_device(port);
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if (udh == 0)
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{
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libusb_exit(NULL);
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return -RIG_EIO;
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}
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/* Try to detach ftdi_sio kernel module.
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* This should be performed only for devices using
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* USB-serial converters (like FTDI chips), for other
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* devices this may cause problems, so do not do it.
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*/
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(void)libusb_set_auto_detach_kernel_driver(udh, port->parm.usb.iface);
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if (port->parm.usb.iface >= 0)
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{
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#ifdef _WIN32
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/* Is it still needed with libusb-1.0 ? */
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if (port->parm.usb.conf >= 0
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&& (r = libusb_set_configuration(udh, port->parm.usb.conf)) < 0)
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{
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rig_debug(RIG_DEBUG_ERR,
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"%s: libusb_set_configuration: failed conf %d: %s\n",
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__func__,
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port->parm.usb.conf,
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libusb_error_name(r));
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libusb_close(udh);
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libusb_exit(NULL);
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return -RIG_EIO;
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}
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#endif
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rig_debug(RIG_DEBUG_VERBOSE,
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"%s: claiming %d\n",
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__func__,
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port->parm.usb.iface);
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r = libusb_claim_interface(udh, port->parm.usb.iface);
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if (r < 0)
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{
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rig_debug(RIG_DEBUG_ERR,
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"%s:libusb_claim_interface: failed interface %d: %s\n",
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__func__,
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port->parm.usb.iface,
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libusb_error_name(r));
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libusb_close(udh);
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libusb_exit(NULL);
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return -RIG_EIO;
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}
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#if 0
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r = libusb_set_interface_alt_setting(udh, port->parm.usb.iface,
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port->parm.usb.alt);
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if (r < 0)
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{
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fprintf(stderr,
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"%s:usb_set_alt_interface: failed: %s\n",
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__func__,
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libusb_error_name(r));
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libusb_release_interface(udh, port->parm.usb.iface);
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libusb_close(udh);
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libusb_exit(NULL);
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return -RIG_EIO;
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}
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#endif
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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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/**
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* \brief Close hamlib_port of USB device
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* \param port
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* \return status
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*/
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int usb_port_close(hamlib_port_t *port)
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{
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libusb_device_handle *udh = port->handle;
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rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
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libusb_release_interface(udh, port->parm.usb.iface);
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libusb_close(udh);
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libusb_exit(NULL);
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return RIG_OK;
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}
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#else
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//! @cond Doxygen_Suppress
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int usb_port_open(hamlib_port_t *port)
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{
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rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
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return -RIG_ENAVAIL;
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}
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//! @endcond
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//! @cond Doxygen_Suppress
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int usb_port_close(hamlib_port_t *port)
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{
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rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
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return -RIG_ENAVAIL;
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}
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//! @endcond
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#endif /* defined(HAVE_LIBUSB) && defined(HAVE_LIBUSB_H) */
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/** @} */
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