diff options
Diffstat (limited to 'gr-fcd/lib/hid/hidwin.c')
| -rw-r--r-- | gr-fcd/lib/hid/hidwin.c | 873 |
1 files changed, 873 insertions, 0 deletions
diff --git a/gr-fcd/lib/hid/hidwin.c b/gr-fcd/lib/hid/hidwin.c new file mode 100644 index 000000000..26d870fd8 --- /dev/null +++ b/gr-fcd/lib/hid/hidwin.c @@ -0,0 +1,873 @@ +/******************************************************* + 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 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 char* HIDP_PREPARSED_DATA; + #define HIDP_STATUS_SUCCESS 0x0 + + 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, HIDP_PREPARSED_DATA **preparsed_data); + typedef BOOLEAN (__stdcall *HidD_FreePreparsedData_)(HIDP_PREPARSED_DATA *preparsed_data); + typedef BOOLEAN (__stdcall *HidP_GetCaps_)(HIDP_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; + 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->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 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), + (LPWSTR)&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) +{ + HANDLE handle; + + /* First, try to open with sharing mode turned off. This will make it so + that a HID device can only be opened once. This is to be consistent + with the behavior on the other platforms. */ + handle = CreateFileA(path, + GENERIC_WRITE |GENERIC_READ, + 0, /*share mode*/ + NULL, + OPEN_EXISTING, + FILE_FLAG_OVERLAPPED,//FILE_ATTRIBUTE_NORMAL, + 0); + + if (handle == INVALID_HANDLE_VALUE) { + /* Couldn't open the device. Some devices must be opened + with sharing enabled (even though they are only opened once), + so try it here. */ + handle = CreateFileA(path, + GENERIC_WRITE |GENERIC_READ, + FILE_SHARE_READ|FILE_SHARE_WRITE, /*share mode*/ + NULL, + OPEN_EXISTING, + FILE_FLAG_OVERLAPPED,//FILE_ATTRIBUTE_NORMAL, + 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; + + if (hid_init() < 0) + return NULL; + + // Initialize the Windows objects. + 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; + } + + //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); + + // 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 && product_id == 0x0) || + (attrib.VendorID == vendor_id && attrib.ProductID == product_id)) { + + #define WSTR_LEN 512 + const char *str; + struct hid_device_info *tmp; + HIDP_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, 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; + HIDP_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); + + // 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->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: + CloseHandle(dev->device_handle); + free(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; + memset(&ol, 0, sizeof(ol)); + + res = WriteFile(dev->device_handle, data, length, NULL, &ol); + + if (!res) { + if (GetLastError() != ERROR_IO_PENDING) { + // WriteFile() failed. Return error. + register_error(dev, "WriteFile"); + return -1; + } + } + + // 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"); + return -1; + } + + 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; + 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. */ + bytes_read--; + memcpy(data, dev->read_buf+1, length); + } + else { + /* Copy the whole buffer, report number and all. */ + memcpy(data, dev->read_buf, length); + } + } + +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); + CloseHandle(dev->ol.hEvent); + CloseHandle(dev->device_handle); + LocalFree(dev->last_error_str); + free(dev->read_buf); + free(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, 2 * 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, 2 * 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, 2 * 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, 2 * 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 |