Fix for using scsi2sd-util on Windows 10.
authorMichael McMaster <michael@codesrc.com>
Mon, 7 Dec 2015 09:59:25 +0000 (19:59 +1000)
committerMichael McMaster <michael@codesrc.com>
Mon, 7 Dec 2015 09:59:25 +0000 (19:59 +1000)
software/scsi2sd-util/Makefile
software/scsi2sd-util/hidapi-windows/hid.c [new file with mode: 0755]

index 61a779b..cfcac9b 100755 (executable)
@@ -58,7 +58,7 @@ ifeq ($(TARGET),Win32)
        WX_CONFIG+=--host=i686-w64-mingw32
 endif
 ifeq ($(TARGET),Win64)
-       VPATH += hidapi/windows
+       VPATH += hidapi-windows
        LDFLAGS += -static -mconsole -mwindows -lsetupapi
        BUILD := $(PWD)/build/windows/64bit
        CC=x86_64-w64-mingw32-gcc
diff --git a/software/scsi2sd-util/hidapi-windows/hid.c b/software/scsi2sd-util/hidapi-windows/hid.c
new file mode 100755 (executable)
index 0000000..b0de82e
--- /dev/null
@@ -0,0 +1,936 @@
+/*******************************************************
+ HIDAPI - Multi-Platform library for
+ communication with HID devices.
+
+ Alan Ott
+ Signal 11 Software
+
+ 8/22/2009
+
+ Copyright 2009, All Rights Reserved.
+ At the discretion of the user of this library,
+ this software may be licensed under the terms of the
+ GNU General Public License v3, a BSD-Style license, or the
+ original HIDAPI license as outlined in the LICENSE.txt,
+ LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
+ files located at the root of the source distribution.
+ These files may also be found in the public source
+ code repository located at:
+        http://github.com/signal11/hidapi .
+********************************************************/
+
+#include <windows.h>
+
+#ifndef _NTDEF_
+typedef LONG NTSTATUS;
+#endif
+
+#ifdef __MINGW32__
+#include <ntdef.h>
+#include <winbase.h>
+#endif
+
+#ifdef __CYGWIN__
+#include <ntdef.h>
+#define _wcsdup wcsdup
+#endif
+
+/*#define HIDAPI_USE_DDK*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+       #include <setupapi.h>
+       #include <winioctl.h>
+       #ifdef HIDAPI_USE_DDK
+               #include <hidsdi.h>
+       #endif
+
+       /* Copied from inc/ddk/hidclass.h, part of the Windows DDK. */
+       #define HID_OUT_CTL_CODE(id)  \
+               CTL_CODE(FILE_DEVICE_KEYBOARD, (id), METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
+       #define IOCTL_HID_GET_FEATURE                   HID_OUT_CTL_CODE(100)
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+#include "hidapi.h"
+
+#ifdef _MSC_VER
+       /* Thanks Microsoft, but I know how to use strncpy(). */
+       #pragma warning(disable:4996)
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef HIDAPI_USE_DDK
+       /* Since we're not building with the DDK, and the HID header
+          files aren't part of the SDK, we have to define all this
+          stuff here. In lookup_functions(), the function pointers
+          defined below are set. */
+       typedef struct _HIDD_ATTRIBUTES{
+               ULONG Size;
+               USHORT VendorID;
+               USHORT ProductID;
+               USHORT VersionNumber;
+       } HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
+
+       typedef USHORT USAGE;
+       typedef struct _HIDP_CAPS {
+               USAGE Usage;
+               USAGE UsagePage;
+               USHORT InputReportByteLength;
+               USHORT OutputReportByteLength;
+               USHORT FeatureReportByteLength;
+               USHORT Reserved[17];
+               USHORT fields_not_used_by_hidapi[10];
+       } HIDP_CAPS, *PHIDP_CAPS;
+       typedef void* PHIDP_PREPARSED_DATA;
+       #define HIDP_STATUS_SUCCESS 0x110000
+
+       typedef BOOLEAN (__stdcall *HidD_GetAttributes_)(HANDLE device, PHIDD_ATTRIBUTES attrib);
+       typedef BOOLEAN (__stdcall *HidD_GetSerialNumberString_)(HANDLE device, PVOID buffer, ULONG buffer_len);
+       typedef BOOLEAN (__stdcall *HidD_GetManufacturerString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
+       typedef BOOLEAN (__stdcall *HidD_GetProductString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
+       typedef BOOLEAN (__stdcall *HidD_SetFeature_)(HANDLE handle, PVOID data, ULONG length);
+       typedef BOOLEAN (__stdcall *HidD_GetFeature_)(HANDLE handle, PVOID data, ULONG length);
+       typedef BOOLEAN (__stdcall *HidD_GetIndexedString_)(HANDLE handle, ULONG string_index, PVOID buffer, ULONG buffer_len);
+       typedef BOOLEAN (__stdcall *HidD_GetPreparsedData_)(HANDLE handle, PHIDP_PREPARSED_DATA *preparsed_data);
+       typedef BOOLEAN (__stdcall *HidD_FreePreparsedData_)(PHIDP_PREPARSED_DATA preparsed_data);
+       typedef NTSTATUS (__stdcall *HidP_GetCaps_)(PHIDP_PREPARSED_DATA preparsed_data, HIDP_CAPS *caps);
+
+       static HidD_GetAttributes_ HidD_GetAttributes;
+       static HidD_GetSerialNumberString_ HidD_GetSerialNumberString;
+       static HidD_GetManufacturerString_ HidD_GetManufacturerString;
+       static HidD_GetProductString_ HidD_GetProductString;
+       static HidD_SetFeature_ HidD_SetFeature;
+       static HidD_GetFeature_ HidD_GetFeature;
+       static HidD_GetIndexedString_ HidD_GetIndexedString;
+       static HidD_GetPreparsedData_ HidD_GetPreparsedData;
+       static HidD_FreePreparsedData_ HidD_FreePreparsedData;
+       static HidP_GetCaps_ HidP_GetCaps;
+
+       static HMODULE lib_handle = NULL;
+       static BOOLEAN initialized = FALSE;
+#endif /* HIDAPI_USE_DDK */
+
+struct hid_device_ {
+               HANDLE device_handle;
+               BOOL blocking;
+               USHORT output_report_length;
+               size_t input_report_length;
+               void *last_error_str;
+               DWORD last_error_num;
+               BOOL read_pending;
+               char *read_buf;
+               OVERLAPPED ol;
+};
+
+static hid_device *new_hid_device()
+{
+       hid_device *dev = (hid_device*) calloc(1, sizeof(hid_device));
+       dev->device_handle = INVALID_HANDLE_VALUE;
+       dev->blocking = TRUE;
+       dev->output_report_length = 0;
+       dev->input_report_length = 0;
+       dev->last_error_str = NULL;
+       dev->last_error_num = 0;
+       dev->read_pending = FALSE;
+       dev->read_buf = NULL;
+       memset(&dev->ol, 0, sizeof(dev->ol));
+       dev->ol.hEvent = CreateEvent(NULL, FALSE, FALSE /*inital state f=nonsignaled*/, NULL);
+
+       return dev;
+}
+
+static void free_hid_device(hid_device *dev)
+{
+       CloseHandle(dev->ol.hEvent);
+       CloseHandle(dev->device_handle);
+       LocalFree(dev->last_error_str);
+       free(dev->read_buf);
+       free(dev);
+}
+
+static void register_error(hid_device *device, const char *op)
+{
+       WCHAR *ptr, *msg;
+
+       FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+               FORMAT_MESSAGE_FROM_SYSTEM |
+               FORMAT_MESSAGE_IGNORE_INSERTS,
+               NULL,
+               GetLastError(),
+               MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+               (LPVOID)&msg, 0/*sz*/,
+               NULL);
+       
+       /* Get rid of the CR and LF that FormatMessage() sticks at the
+          end of the message. Thanks Microsoft! */
+       ptr = msg;
+       while (*ptr) {
+               if (*ptr == '\r') {
+                       *ptr = 0x0000;
+                       break;
+               }
+               ptr++;
+       }
+
+       /* Store the message off in the Device entry so that
+          the hid_error() function can pick it up. */
+       LocalFree(device->last_error_str);
+       device->last_error_str = msg;
+}
+
+#ifndef HIDAPI_USE_DDK
+static int lookup_functions()
+{
+       lib_handle = LoadLibraryA("hid.dll");
+       if (lib_handle) {
+#define RESOLVE(x) x = (x##_)GetProcAddress(lib_handle, #x); if (!x) return -1;
+               RESOLVE(HidD_GetAttributes);
+               RESOLVE(HidD_GetSerialNumberString);
+               RESOLVE(HidD_GetManufacturerString);
+               RESOLVE(HidD_GetProductString);
+               RESOLVE(HidD_SetFeature);
+               RESOLVE(HidD_GetFeature);
+               RESOLVE(HidD_GetIndexedString);
+               RESOLVE(HidD_GetPreparsedData);
+               RESOLVE(HidD_FreePreparsedData);
+               RESOLVE(HidP_GetCaps);
+#undef RESOLVE
+       }
+       else
+               return -1;
+
+       return 0;
+}
+#endif
+
+static HANDLE open_device(const char *path, BOOL enumerate)
+{
+#if 0
+ See https://github.com/signal11/hidapi/issues/231
+       HANDLE handle;
+       DWORD desired_access = (enumerate)? 0: (GENERIC_WRITE | GENERIC_READ);
+       DWORD share_mode = (enumerate)?
+                             FILE_SHARE_READ|FILE_SHARE_WRITE:
+                             FILE_SHARE_READ;
+
+       handle = CreateFileA(path,
+               desired_access,
+               share_mode,
+               NULL,
+               OPEN_EXISTING,
+               FILE_FLAG_OVERLAPPED,/*FILE_ATTRIBUTE_NORMAL,*/
+               0);
+
+       return handle;
+#endif
+       HANDLE handle;
+
+       handle = CreateFileA(path,
+               GENERIC_WRITE | GENERIC_READ,
+               FILE_SHARE_READ | FILE_SHARE_WRITE,
+               NULL,
+               OPEN_EXISTING,
+               FILE_FLAG_OVERLAPPED, 0);
+
+       return handle;
+}
+
+int HID_API_EXPORT hid_init(void)
+{
+#ifndef HIDAPI_USE_DDK
+       if (!initialized) {
+               if (lookup_functions() < 0) {
+                       hid_exit();
+                       return -1;
+               }
+               initialized = TRUE;
+       }
+#endif
+       return 0;
+}
+
+int HID_API_EXPORT hid_exit(void)
+{
+#ifndef HIDAPI_USE_DDK
+       if (lib_handle)
+               FreeLibrary(lib_handle);
+       lib_handle = NULL;
+       initialized = FALSE;
+#endif
+       return 0;
+}
+
+struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
+{
+       BOOL res;
+       struct hid_device_info *root = NULL; /* return object */
+       struct hid_device_info *cur_dev = NULL;
+
+       /* Windows objects for interacting with the driver. */
+       GUID InterfaceClassGuid = {0x4d1e55b2, 0xf16f, 0x11cf, {0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30} };
+       SP_DEVINFO_DATA devinfo_data;
+       SP_DEVICE_INTERFACE_DATA device_interface_data;
+       SP_DEVICE_INTERFACE_DETAIL_DATA_A *device_interface_detail_data = NULL;
+       HDEVINFO device_info_set = INVALID_HANDLE_VALUE;
+       int device_index = 0;
+       int i;
+
+       if (hid_init() < 0)
+               return NULL;
+
+       /* Initialize the Windows objects. */
+       memset(&devinfo_data, 0x0, sizeof(devinfo_data));
+       devinfo_data.cbSize = sizeof(SP_DEVINFO_DATA);
+       device_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
+
+       /* Get information for all the devices belonging to the HID class. */
+       device_info_set = SetupDiGetClassDevsA(&InterfaceClassGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
+       
+       /* Iterate over each device in the HID class, looking for the right one. */
+       
+       for (;;) {
+               HANDLE write_handle = INVALID_HANDLE_VALUE;
+               DWORD required_size = 0;
+               HIDD_ATTRIBUTES attrib;
+
+               res = SetupDiEnumDeviceInterfaces(device_info_set,
+                       NULL,
+                       &InterfaceClassGuid,
+                       device_index,
+                       &device_interface_data);
+               
+               if (!res) {
+                       /* A return of FALSE from this function means that
+                          there are no more devices. */
+                       break;
+               }
+
+               /* Call with 0-sized detail size, and let the function
+                  tell us how long the detail struct needs to be. The
+                  size is put in &required_size. */
+               res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
+                       &device_interface_data,
+                       NULL,
+                       0,
+                       &required_size,
+                       NULL);
+
+               /* Allocate a long enough structure for device_interface_detail_data. */
+               device_interface_detail_data = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) malloc(required_size);
+               device_interface_detail_data->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
+
+               /* Get the detailed data for this device. The detail data gives us
+                  the device path for this device, which is then passed into
+                  CreateFile() to get a handle to the device. */
+               res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
+                       &device_interface_data,
+                       device_interface_detail_data,
+                       required_size,
+                       NULL,
+                       NULL);
+
+               if (!res) {
+                       /* register_error(dev, "Unable to call SetupDiGetDeviceInterfaceDetail");
+                          Continue to the next device. */
+                       goto cont;
+               }
+
+               /* Make sure this device is of Setup Class "HIDClass" and has a
+                  driver bound to it. */
+               for (i = 0; ; i++) {
+                       char driver_name[256];
+
+                       /* Populate devinfo_data. This function will return failure
+                          when there are no more interfaces left. */
+                       res = SetupDiEnumDeviceInfo(device_info_set, i, &devinfo_data);
+                       if (!res)
+                               goto cont;
+
+                       res = SetupDiGetDeviceRegistryPropertyA(device_info_set, &devinfo_data,
+                                      SPDRP_CLASS, NULL, (PBYTE)driver_name, sizeof(driver_name), NULL);
+                       if (!res)
+                               goto cont;
+
+                       if (strcmp(driver_name, "HIDClass") == 0) {
+                               /* See if there's a driver bound. */
+                               res = SetupDiGetDeviceRegistryPropertyA(device_info_set, &devinfo_data,
+                                          SPDRP_DRIVER, NULL, (PBYTE)driver_name, sizeof(driver_name), NULL);
+                               if (res)
+                                       break;
+                       }
+               }
+
+               //wprintf(L"HandleName: %s\n", device_interface_detail_data->DevicePath);
+
+               /* Open a handle to the device */
+               write_handle = open_device(device_interface_detail_data->DevicePath, TRUE);
+
+               /* Check validity of write_handle. */
+               if (write_handle == INVALID_HANDLE_VALUE) {
+                       /* Unable to open the device. */
+                       //register_error(dev, "CreateFile");
+                       goto cont_close;
+               }               
+
+
+               /* Get the Vendor ID and Product ID for this device. */
+               attrib.Size = sizeof(HIDD_ATTRIBUTES);
+               HidD_GetAttributes(write_handle, &attrib);
+               //wprintf(L"Product/Vendor: %x %x\n", attrib.ProductID, attrib.VendorID);
+
+               /* Check the VID/PID to see if we should add this
+                  device to the enumeration list. */
+               if ((vendor_id == 0x0 || attrib.VendorID == vendor_id) &&
+                   (product_id == 0x0 || attrib.ProductID == product_id)) {
+
+                       #define WSTR_LEN 512
+                       const char *str;
+                       struct hid_device_info *tmp;
+                       PHIDP_PREPARSED_DATA pp_data = NULL;
+                       HIDP_CAPS caps;
+                       BOOLEAN res;
+                       NTSTATUS nt_res;
+                       wchar_t wstr[WSTR_LEN]; /* TODO: Determine Size */
+                       size_t len;
+
+                       /* VID/PID match. Create the record. */
+                       tmp = (struct hid_device_info*) calloc(1, sizeof(struct hid_device_info));
+                       if (cur_dev) {
+                               cur_dev->next = tmp;
+                       }
+                       else {
+                               root = tmp;
+                       }
+                       cur_dev = tmp;
+
+                       /* Get the Usage Page and Usage for this device. */
+                       res = HidD_GetPreparsedData(write_handle, &pp_data);
+                       if (res) {
+                               nt_res = HidP_GetCaps(pp_data, &caps);
+                               if (nt_res == HIDP_STATUS_SUCCESS) {
+                                       cur_dev->usage_page = caps.UsagePage;
+                                       cur_dev->usage = caps.Usage;
+                               }
+
+                               HidD_FreePreparsedData(pp_data);
+                       }
+                       
+                       /* Fill out the record */
+                       cur_dev->next = NULL;
+                       str = device_interface_detail_data->DevicePath;
+                       if (str) {
+                               len = strlen(str);
+                               cur_dev->path = (char*) calloc(len+1, sizeof(char));
+                               strncpy(cur_dev->path, str, len+1);
+                               cur_dev->path[len] = '\0';
+                       }
+                       else
+                               cur_dev->path = NULL;
+
+                       /* Serial Number */
+                       res = HidD_GetSerialNumberString(write_handle, wstr, sizeof(wstr));
+                       wstr[WSTR_LEN-1] = 0x0000;
+                       if (res) {
+                               cur_dev->serial_number = _wcsdup(wstr);
+                       }
+
+                       /* Manufacturer String */
+                       res = HidD_GetManufacturerString(write_handle, wstr, sizeof(wstr));
+                       wstr[WSTR_LEN-1] = 0x0000;
+                       if (res) {
+                               cur_dev->manufacturer_string = _wcsdup(wstr);
+                       }
+
+                       /* Product String */
+                       res = HidD_GetProductString(write_handle, wstr, sizeof(wstr));
+                       wstr[WSTR_LEN-1] = 0x0000;
+                       if (res) {
+                               cur_dev->product_string = _wcsdup(wstr);
+                       }
+
+                       /* VID/PID */
+                       cur_dev->vendor_id = attrib.VendorID;
+                       cur_dev->product_id = attrib.ProductID;
+
+                       /* Release Number */
+                       cur_dev->release_number = attrib.VersionNumber;
+
+                       /* Interface Number. It can sometimes be parsed out of the path
+                          on Windows if a device has multiple interfaces. See
+                          http://msdn.microsoft.com/en-us/windows/hardware/gg487473 or
+                          search for "Hardware IDs for HID Devices" at MSDN. If it's not
+                          in the path, it's set to -1. */
+                       cur_dev->interface_number = -1;
+                       if (cur_dev->path) {
+                               char *interface_component = strstr(cur_dev->path, "&mi_");
+                               if (interface_component) {
+                                       char *hex_str = interface_component + 4;
+                                       char *endptr = NULL;
+                                       cur_dev->interface_number = strtol(hex_str, &endptr, 16);
+                                       if (endptr == hex_str) {
+                                               /* The parsing failed. Set interface_number to -1. */
+                                               cur_dev->interface_number = -1;
+                                       }
+                               }
+                       }
+               }
+
+cont_close:
+               CloseHandle(write_handle);
+cont:
+               /* We no longer need the detail data. It can be freed */
+               free(device_interface_detail_data);
+
+               device_index++;
+
+       }
+
+       /* Close the device information handle. */
+       SetupDiDestroyDeviceInfoList(device_info_set);
+
+       return root;
+
+}
+
+void  HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs)
+{
+       /* TODO: Merge this with the Linux version. This function is platform-independent. */
+       struct hid_device_info *d = devs;
+       while (d) {
+               struct hid_device_info *next = d->next;
+               free(d->path);
+               free(d->serial_number);
+               free(d->manufacturer_string);
+               free(d->product_string);
+               free(d);
+               d = next;
+       }
+}
+
+
+HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
+{
+       /* TODO: Merge this functions with the Linux version. This function should be platform independent. */
+       struct hid_device_info *devs, *cur_dev;
+       const char *path_to_open = NULL;
+       hid_device *handle = NULL;
+       
+       devs = hid_enumerate(vendor_id, product_id);
+       cur_dev = devs;
+       while (cur_dev) {
+               if (cur_dev->vendor_id == vendor_id &&
+                   cur_dev->product_id == product_id) {
+                       if (serial_number) {
+                               if (wcscmp(serial_number, cur_dev->serial_number) == 0) {
+                                       path_to_open = cur_dev->path;
+                                       break;
+                               }
+                       }
+                       else {
+                               path_to_open = cur_dev->path;
+                               break;
+                       }
+               }
+               cur_dev = cur_dev->next;
+       }
+
+       if (path_to_open) {
+               /* Open the device */
+               handle = hid_open_path(path_to_open);
+       }
+
+       hid_free_enumeration(devs);
+       
+       return handle;
+}
+
+HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path)
+{
+       hid_device *dev;
+       HIDP_CAPS caps;
+       PHIDP_PREPARSED_DATA pp_data = NULL;
+       BOOLEAN res;
+       NTSTATUS nt_res;
+
+       if (hid_init() < 0) {
+               return NULL;
+       }
+
+       dev = new_hid_device();
+
+       /* Open a handle to the device */
+       dev->device_handle = open_device(path, FALSE);
+
+       /* Check validity of write_handle. */
+       if (dev->device_handle == INVALID_HANDLE_VALUE) {
+               /* Unable to open the device. */
+               register_error(dev, "CreateFile");
+               goto err;
+       }
+
+       /* Get the Input Report length for the device. */
+       res = HidD_GetPreparsedData(dev->device_handle, &pp_data);
+       if (!res) {
+               register_error(dev, "HidD_GetPreparsedData");
+               goto err;
+       }
+       nt_res = HidP_GetCaps(pp_data, &caps);
+       if (nt_res != HIDP_STATUS_SUCCESS) {
+               register_error(dev, "HidP_GetCaps");    
+               goto err_pp_data;
+       }
+       dev->output_report_length = caps.OutputReportByteLength;
+       dev->input_report_length = caps.InputReportByteLength;
+       HidD_FreePreparsedData(pp_data);
+
+       dev->read_buf = (char*) malloc(dev->input_report_length);
+
+       return dev;
+
+err_pp_data:
+               HidD_FreePreparsedData(pp_data);
+err:   
+               free_hid_device(dev);
+               return NULL;
+}
+
+int HID_API_EXPORT HID_API_CALL hid_write(hid_device *dev, const unsigned char *data, size_t length)
+{
+       DWORD bytes_written;
+       BOOL res;
+
+       OVERLAPPED ol;
+       unsigned char *buf;
+       memset(&ol, 0, sizeof(ol));
+
+       /* Make sure the right number of bytes are passed to WriteFile. Windows
+          expects the number of bytes which are in the _longest_ report (plus
+          one for the report number) bytes even if the data is a report
+          which is shorter than that. Windows gives us this value in
+          caps.OutputReportByteLength. If a user passes in fewer bytes than this,
+          create a temporary buffer which is the proper size. */
+       if (length >= dev->output_report_length) {
+               /* The user passed the right number of bytes. Use the buffer as-is. */
+               buf = (unsigned char *) data;
+       } else {
+               /* Create a temporary buffer and copy the user's data
+                  into it, padding the rest with zeros. */
+               buf = (unsigned char *) malloc(dev->output_report_length);
+               memcpy(buf, data, length);
+               memset(buf + length, 0, dev->output_report_length - length);
+               length = dev->output_report_length;
+       }
+
+       res = WriteFile(dev->device_handle, buf, length, NULL, &ol);
+       
+       if (!res) {
+               if (GetLastError() != ERROR_IO_PENDING) {
+                       /* WriteFile() failed. Return error. */
+                       register_error(dev, "WriteFile");
+                       bytes_written = -1;
+                       goto end_of_function;
+               }
+       }
+
+       /* Wait here until the write is done. This makes
+          hid_write() synchronous. */
+       res = GetOverlappedResult(dev->device_handle, &ol, &bytes_written, TRUE/*wait*/);
+       if (!res) {
+               /* The Write operation failed. */
+               register_error(dev, "WriteFile");
+               bytes_written = -1;
+               goto end_of_function;
+       }
+
+end_of_function:
+       if (buf != data)
+               free(buf);
+
+       return bytes_written;
+}
+
+
+int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds)
+{
+       DWORD bytes_read = 0;
+       BOOL res;
+
+       /* Copy the handle for convenience. */
+       HANDLE ev = dev->ol.hEvent;
+
+       if (!dev->read_pending) {
+               /* Start an Overlapped I/O read. */
+               dev->read_pending = TRUE;
+               memset(dev->read_buf, 0, dev->input_report_length);
+               ResetEvent(ev);
+               res = ReadFile(dev->device_handle, dev->read_buf, dev->input_report_length, &bytes_read, &dev->ol);
+               
+               if (!res) {
+                       if (GetLastError() != ERROR_IO_PENDING) {
+                               /* ReadFile() has failed.
+                                  Clean up and return error. */
+                               CancelIo(dev->device_handle);
+                               dev->read_pending = FALSE;
+                               goto end_of_function;
+                       }
+               }
+       }
+
+       if (milliseconds >= 0) {
+               /* See if there is any data yet. */
+               res = WaitForSingleObject(ev, milliseconds);
+               if (res != WAIT_OBJECT_0) {
+                       /* There was no data this time. Return zero bytes available,
+                          but leave the Overlapped I/O running. */
+                       return 0;
+               }
+       }
+
+       /* Either WaitForSingleObject() told us that ReadFile has completed, or
+          we are in non-blocking mode. Get the number of bytes read. The actual
+          data has been copied to the data[] array which was passed to ReadFile(). */
+       res = GetOverlappedResult(dev->device_handle, &dev->ol, &bytes_read, TRUE/*wait*/);
+       
+       /* Set pending back to false, even if GetOverlappedResult() returned error. */
+       dev->read_pending = FALSE;
+
+       if (res && bytes_read > 0) {
+               if (dev->read_buf[0] == 0x0) {
+                       /* If report numbers aren't being used, but Windows sticks a report
+                          number (0x0) on the beginning of the report anyway. To make this
+                          work like the other platforms, and to make it work more like the
+                          HID spec, we'll skip over this byte. */
+                       size_t copy_len;
+                       bytes_read--;
+                       copy_len = length > bytes_read ? bytes_read : length;
+                       memcpy(data, dev->read_buf+1, copy_len);
+               }
+               else {
+                       /* Copy the whole buffer, report number and all. */
+                       size_t copy_len = length > bytes_read ? bytes_read : length;
+                       memcpy(data, dev->read_buf, copy_len);
+               }
+       }
+       
+end_of_function:
+       if (!res) {
+               register_error(dev, "GetOverlappedResult");
+               return -1;
+       }
+       
+       return bytes_read;
+}
+
+int HID_API_EXPORT HID_API_CALL hid_read(hid_device *dev, unsigned char *data, size_t length)
+{
+       return hid_read_timeout(dev, data, length, (dev->blocking)? -1: 0);
+}
+
+int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *dev, int nonblock)
+{
+       dev->blocking = !nonblock;
+       return 0; /* Success */
+}
+
+int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length)
+{
+       BOOL res = HidD_SetFeature(dev->device_handle, (PVOID)data, length);
+       if (!res) {
+               register_error(dev, "HidD_SetFeature");
+               return -1;
+       }
+
+       return length;
+}
+
+
+int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length)
+{
+       BOOL res;
+#if 0
+       res = HidD_GetFeature(dev->device_handle, data, length);
+       if (!res) {
+               register_error(dev, "HidD_GetFeature");
+               return -1;
+       }
+       return 0; /* HidD_GetFeature() doesn't give us an actual length, unfortunately */
+#else
+       DWORD bytes_returned;
+
+       OVERLAPPED ol;
+       memset(&ol, 0, sizeof(ol));
+
+       res = DeviceIoControl(dev->device_handle,
+               IOCTL_HID_GET_FEATURE,
+               data, length,
+               data, length,
+               &bytes_returned, &ol);
+
+       if (!res) {
+               if (GetLastError() != ERROR_IO_PENDING) {
+                       /* DeviceIoControl() failed. Return error. */
+                       register_error(dev, "Send Feature Report DeviceIoControl");
+                       return -1;
+               }
+       }
+
+       /* Wait here until the write is done. This makes
+          hid_get_feature_report() synchronous. */
+       res = GetOverlappedResult(dev->device_handle, &ol, &bytes_returned, TRUE/*wait*/);
+       if (!res) {
+               /* The operation failed. */
+               register_error(dev, "Send Feature Report GetOverLappedResult");
+               return -1;
+       }
+       return bytes_returned;
+#endif
+}
+
+void HID_API_EXPORT HID_API_CALL hid_close(hid_device *dev)
+{
+       if (!dev)
+               return;
+       CancelIo(dev->device_handle);
+       free_hid_device(dev);
+}
+
+int HID_API_EXPORT_CALL HID_API_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen)
+{
+       BOOL res;
+
+       res = HidD_GetManufacturerString(dev->device_handle, string, sizeof(wchar_t) * maxlen);
+       if (!res) {
+               register_error(dev, "HidD_GetManufacturerString");
+               return -1;
+       }
+
+       return 0;
+}
+
+int HID_API_EXPORT_CALL HID_API_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen)
+{
+       BOOL res;
+
+       res = HidD_GetProductString(dev->device_handle, string, sizeof(wchar_t) * maxlen);
+       if (!res) {
+               register_error(dev, "HidD_GetProductString");
+               return -1;
+       }
+
+       return 0;
+}
+
+int HID_API_EXPORT_CALL HID_API_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen)
+{
+       BOOL res;
+
+       res = HidD_GetSerialNumberString(dev->device_handle, string, sizeof(wchar_t) * maxlen);
+       if (!res) {
+               register_error(dev, "HidD_GetSerialNumberString");
+               return -1;
+       }
+
+       return 0;
+}
+
+int HID_API_EXPORT_CALL HID_API_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen)
+{
+       BOOL res;
+
+       res = HidD_GetIndexedString(dev->device_handle, string_index, string, sizeof(wchar_t) * maxlen);
+       if (!res) {
+               register_error(dev, "HidD_GetIndexedString");
+               return -1;
+       }
+
+       return 0;
+}
+
+
+HID_API_EXPORT const wchar_t * HID_API_CALL  hid_error(hid_device *dev)
+{
+       return (wchar_t*)dev->last_error_str;
+}
+
+
+/*#define PICPGM*/
+/*#define S11*/
+#define P32
+#ifdef S11 
+  unsigned short VendorID = 0xa0a0;
+       unsigned short ProductID = 0x0001;
+#endif
+
+#ifdef P32
+  unsigned short VendorID = 0x04d8;
+       unsigned short ProductID = 0x3f;
+#endif
+
+
+#ifdef PICPGM
+  unsigned short VendorID = 0x04d8;
+  unsigned short ProductID = 0x0033;
+#endif
+
+
+#if 0
+int __cdecl main(int argc, char* argv[])
+{
+       int res;
+       unsigned char buf[65];
+
+       UNREFERENCED_PARAMETER(argc);
+       UNREFERENCED_PARAMETER(argv);
+
+       /* Set up the command buffer. */
+       memset(buf,0x00,sizeof(buf));
+       buf[0] = 0;
+       buf[1] = 0x81;
+       
+
+       /* Open the device. */
+       int handle = open(VendorID, ProductID, L"12345");
+       if (handle < 0)
+               printf("unable to open device\n");
+
+
+       /* Toggle LED (cmd 0x80) */
+       buf[1] = 0x80;
+       res = write(handle, buf, 65);
+       if (res < 0)
+               printf("Unable to write()\n");
+
+       /* Request state (cmd 0x81) */
+       buf[1] = 0x81;
+       write(handle, buf, 65);
+       if (res < 0)
+               printf("Unable to write() (2)\n");
+
+       /* Read requested state */
+       read(handle, buf, 65);
+       if (res < 0)
+               printf("Unable to read()\n");
+
+       /* Print out the returned buffer. */
+       for (int i = 0; i < 4; i++)
+               printf("buf[%d]: %d\n", i, buf[i]);
+
+       return 0;
+}
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif