--- /dev/null
+/*******************************************************
+ 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
projects / SCSI2SD.git / commitdiff