77 lines
3.9 KiB
C
77 lines
3.9 KiB
C
/* Name: opendevice.h
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* Project: V-USB host-side library
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* Author: Christian Starkjohann
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* Creation Date: 2008-04-10
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* Tabsize: 4
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* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
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* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
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*/
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/*
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General Description:
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This module offers additional functionality for host side drivers based on
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libusb or libusb-win32. It includes a function to find and open a device
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based on numeric IDs and textual description. It also includes a function to
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obtain textual descriptions from a device.
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To use this functionality, simply copy opendevice.c and opendevice.h into your
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project and add them to your Makefile. You may modify and redistribute these
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files according to the GNU General Public License (GPL) version 2 or 3.
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*/
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#ifndef __OPENDEVICE_H_INCLUDED__
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#define __OPENDEVICE_H_INCLUDED__
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#include <usb.h> /* this is libusb, see http://libusb.sourceforge.net/ */
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#include <stdio.h>
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int usbGetStringAscii(usb_dev_handle *dev, int index, char *buf, int buflen);
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/* This function gets a string descriptor from the device. 'index' is the
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* string descriptor index. The string is returned in ISO Latin 1 encoding in
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* 'buf' and it is terminated with a 0-character. The buffer size must be
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* passed in 'buflen' to prevent buffer overflows. A libusb device handle
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* must be given in 'dev'.
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* Returns: The length of the string (excluding the terminating 0) or
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* a negative number in case of an error. If there was an error, use
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* usb_strerror() to obtain the error message.
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*/
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int usbOpenDevice(usb_dev_handle **device, int vendorID, char *vendorNamePattern, int productID, char *productNamePattern, char *serialNamePattern, FILE *printMatchingDevicesFp, FILE *warningsFp);
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/* This function iterates over all devices on all USB busses and searches for
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* a device. Matching is done first by means of Vendor- and Product-ID (passed
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* in 'vendorID' and 'productID'. An ID of 0 matches any numeric ID (wildcard).
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* When a device matches by its IDs, matching by names is performed. Name
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* matching can be done on textual vendor name ('vendorNamePattern'), product
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* name ('productNamePattern') and serial number ('serialNamePattern'). A
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* device matches only if all non-null pattern match. If you don't care about
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* a string, pass NULL for the pattern. Patterns are Unix shell style pattern:
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* '*' stands for 0 or more characters, '?' for one single character, a list
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* of characters in square brackets for a single character from the list
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* (dashes are allowed to specify a range) and if the lis of characters begins
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* with a caret ('^'), it matches one character which is NOT in the list.
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* Other parameters to the function: If 'warningsFp' is not NULL, warning
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* messages are printed to this file descriptor with fprintf(). If
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* 'printMatchingDevicesFp' is not NULL, no device is opened but matching
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* devices are printed to the given file descriptor with fprintf().
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* If a device is opened, the resulting USB handle is stored in '*device'. A
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* pointer to a "usb_dev_handle *" type variable must be passed here.
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* Returns: 0 on success, an error code (see defines below) on failure.
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*/
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/* usbOpenDevice() error codes: */
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#define USBOPEN_SUCCESS 0 /* no error */
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#define USBOPEN_ERR_ACCESS 1 /* not enough permissions to open device */
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#define USBOPEN_ERR_IO 2 /* I/O error */
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#define USBOPEN_ERR_NOTFOUND 3 /* device not found */
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/* Obdev's free USB IDs, see USB-IDs-for-free.txt for details */
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#define USB_VID_OBDEV_SHARED 5824 /* obdev's shared vendor ID */
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#define USB_PID_OBDEV_SHARED_CUSTOM 1500 /* shared PID for custom class devices */
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#define USB_PID_OBDEV_SHARED_HID 1503 /* shared PID for HIDs except mice & keyboards */
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#define USB_PID_OBDEV_SHARED_CDCACM 1505 /* shared PID for CDC Modem devices */
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#define USB_PID_OBDEV_SHARED_MIDI 1508 /* shared PID for MIDI class devices */
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#endif /* __OPENDEVICE_H_INCLUDED__ */
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