-/* Name: hiddata.c
- * Author: Christian Starkjohann
- * Creation Date: 2008-04-11
- * Tabsize: 4
+/* hiddata_libusb01.c
+ * Variant for libusb v 0.1 (old simple version, found in many PC Linux distros)
+ */
+
+/* Inspired by hiddata.c|h by Christian Starkjohann
* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
*/
+
#include "hiddata.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
+#include <usb.h>
#if 0 //ifdef DEBUG
#define DEBUG_PRINT(arg) printf arg
#define DEBUG_PRINT(arg)
#endif
-#define A_MAX_USB_STRING_LEN 126
-
-
-/* ######################################################################## */
-#if defined(_WIN32)
-/* ######################################################################## */
-
-#include "targetver.h"
-#include <windows.h>
-#include <setupapi.h>
-#include <hidsdi.h>
-#include <hidpi.h>
-
-#ifdef _MSC_VER
-#pragma comment(lib, "setupapi")
-#pragma comment(lib, "hid")
-
-#define snprintf _snprintf
-#endif /*_MSC_VER*/
-
-/*
- * Convert UTF-16 null term. string to single byte (ASCII or ISO Latin)
- * change all weird characters to "?"
- */
-static void usbstring_to_ascii(unsigned short *wp, char *cp, int size)
-{
- unsigned short *wpend = wp + (size/sizeof(unsigned short));
- for( ; wp < wpend; )
- {
- unsigned short h = *wp++;
- *cp++ = (h < 0xFF) ? (char)h : '?';
- if (h == 0)
- break;
- }
-}
-
-/*
- * Read HID string for vendor and device, return as ASCII (or ISO Latin...)
- */
-int usbhidGetVendorString(USBDEVHANDLE usbh, char *buffer, int len)
-{
- /* HidD_GetManufacturerString returns zero terminated UTF-16 string */
- /* Error if buffer is too short */
- if ( !HidD_GetManufacturerString((HANDLE)usbh, (void*)buffer, len ) ) {
- DEBUG_PRINT(("error obtaining vendor name\n"));
- return USBHID_ERR_IO_HID;
- }
- usbstring_to_ascii((UINT16*)buffer, buffer, len);
- return 0;
-}
-
-int usbhidGetProductString(USBDEVHANDLE usbh, char *buffer, int len)
-{
- /* HidD_GetProductString returns zero terminated UTF-16 string */
- /* Error if buffer is too short */
- if (!HidD_GetProductString((HANDLE)usbh, (void*)buffer, len ) ) {
- DEBUG_PRINT(("error obtaining product name\n"));
- return USBHID_ERR_IO_HID;
- }
- usbstring_to_ascii((UINT16*)buffer, buffer, len);
- return 0;
-}
-
-/*
- * Enumerate HID USB devices.
- * In Windows this will find also non-USB devices, but assume that
- * filtering by PID & VID is enough.
- * Some HID devices (mice, kbd) are locked by Windows and cannot be opened.
- * If we cannot open a device for R&W, we skip it without error.
- * Assume our devices are not of types reserved by Windows.
- */
-int usbhidEnumDevices(int vendor, int product,
- void *context,
- int (*usbhidEnumFunc)(USBDEVHANDLE usbh, void *ctx))
-{
- GUID hidGuid; /* GUID for HID class */
- HDEVINFO deviceInfoList;
- SP_DEVICE_INTERFACE_DATA deviceInfo;
- SP_DEVICE_INTERFACE_DETAIL_DATA_W *deviceDetails = NULL;
- DWORD size;
- int i, openFlag = 0; /* may be FILE_FLAG_OVERLAPPED */
- int errorCode = USBHID_ERR_NOTFOUND;
- HANDLE handle = INVALID_HANDLE_VALUE;
- HIDD_ATTRIBUTES deviceAttributes;
-
- HidD_GetHidGuid(&hidGuid);
- deviceInfoList = SetupDiGetClassDevsW(&hidGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);
- if (!deviceInfoList || deviceInfoList == INVALID_HANDLE_VALUE)
- {
- return USBHID_ERR_NOTFOUND;
- }
-
- deviceInfo.cbSize = sizeof(deviceInfo);
- for (i=0; ; i++) {
- if(handle != INVALID_HANDLE_VALUE){
- CloseHandle(handle);
- handle = INVALID_HANDLE_VALUE;
- }
- if( !SetupDiEnumDeviceInterfaces(deviceInfoList, 0, &hidGuid, i, &deviceInfo) )
- break; /* no more entries */
- /* first do a dummy call just to determine the actual size required */
- SetupDiGetDeviceInterfaceDetailW(deviceInfoList, &deviceInfo, NULL, 0, &size, NULL);
- if(deviceDetails != NULL)
- free(deviceDetails);
- deviceDetails = malloc(size);
- deviceDetails->cbSize = sizeof(*deviceDetails);
- /* this call is for real: */
- SetupDiGetDeviceInterfaceDetailW(deviceInfoList, &deviceInfo, deviceDetails, size, &size, NULL);
- DEBUG_PRINT(("checking HID path \"%s\"\n", deviceDetails->DevicePath));
-
- handle = CreateFileW(deviceDetails->DevicePath,
- GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, openFlag, NULL);
- if(handle == INVALID_HANDLE_VALUE){
- DEBUG_PRINT(("open USB device failed: gle=%d\n", (int)GetLastError()));
- /* errorCode = USBOPEN_ERR_ACCESS; opening will always fail for mouse -- ignore */
- continue;
- }
- deviceAttributes.Size = sizeof(deviceAttributes);
- HidD_GetAttributes(handle, &deviceAttributes);
- DEBUG_PRINT(("device attributes: vid=%d pid=%d ver=%4.4X\n", deviceAttributes.VendorID, deviceAttributes.ProductID, deviceAttributes.VersionNumber));
- if(deviceAttributes.VendorID != vendor || deviceAttributes.ProductID != product)
- continue; /* skip this device */
-
- errorCode = 0;
- if ( 0 == usbhidEnumFunc((USBDEVHANDLE)handle, context) )
- {
- break; /* stop enumeration */
- }
-
- /* Now the handle is owned by the callback */
- handle = INVALID_HANDLE_VALUE;
- }
-
- SetupDiDestroyDeviceInfoList(deviceInfoList);
- if(deviceDetails != NULL)
- free(deviceDetails);
-
- return errorCode;
-}
-
-
-void usbhidCloseDevice(USBDEVHANDLE usbh)
-{
- CloseHandle((HANDLE)usbh);
-}
-
-
-int usbhidSetReport(USBDEVHANDLE usbh, char *buffer, int len)
-{
- BOOLEAN rval;
- rval = HidD_SetFeature((HANDLE)usbh, buffer, len);
- return rval == 0 ? USBHID_ERR_IO_HID : 0;
-}
-
-
-int usbhidGetReport(USBDEVHANDLE usbh, int reportNumber, char *buffer, int *len)
-{
- BOOLEAN rval = 0;
- buffer[0] = reportNumber;
- rval = HidD_GetFeature((HANDLE)usbh, buffer, *len);
- return rval == 0 ? USBHID_ERR_IO_HID : 0;
-}
-
-
-
-/* ######################################################################## */
-#else /* defined WIN32 #################################################### */
-/* ######################################################################## */
-
-// Using the old simple version of libusb (before 1.0)
-#include <usb.h>
// USBDEVHANDLE is same as struct usb_device *
// Open handles are stored in struct usb_device (HACK! revise for new libusb)
#define USBRQ_HID_GET_REPORT 0x01
#define USBRQ_HID_SET_REPORT 0x09
-
#define USB_HID_REPORT_TYPE_FEATURE 3
#define A_REPORT_REQUEST_TIMEOUT 5000 /* in milliseconds */
void usbhidSetUsesReportId(USBDEVHANDLE usbh)
{
//TODO Implement if some devices prepend report IDs
+ //This differs among several versions of Linux HID libraries...
}
-/* ######################################################################## */
-#endif /* WIN32 */
-/* ######################################################################## */
-
int usbhidStrerror_r( int err, char *buf, int len)
{
const char *s;
projects / usb-relay-hid.git / blobdiff