X-Git-Url: https://git.realraum.at/?p=svn42.git;a=blobdiff_plain;f=rf433rcv%2Fpc%2Fhid_WINDOWS.c;fp=rf433rcv%2Fpc%2Fhid_WINDOWS.c;h=0000000000000000000000000000000000000000;hp=071877341f76a8644162b50265b3f7c50f086b81;hb=fff7d88ae580a68519a3b9f590a2cf9cce21ef8b;hpb=5b00dab1a7d2ac2d8a593f0bd6e85a7194e2c9bd diff --git a/rf433rcv/pc/hid_WINDOWS.c b/rf433rcv/pc/hid_WINDOWS.c deleted file mode 100644 index 0718773..0000000 --- a/rf433rcv/pc/hid_WINDOWS.c +++ /dev/null @@ -1,328 +0,0 @@ -/* Simple Raw HID functions for Windows - for use with Teensy RawHID example - * http://www.pjrc.com/teensy/rawhid.html - * Copyright (c) 2009 PJRC.COM, LLC - * - * rawhid_open - open 1 or more devices - * rawhid_recv - receive a packet - * rawhid_send - send a packet - * rawhid_close - close a device - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above description, website URL and copyright notice and this permission - * notice shall be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - * Version 1.0: Initial Release - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "hid.h" - - -// a list of all opened HID devices, so the caller can -// simply refer to them by number -typedef struct hid_struct hid_t; -static hid_t *first_hid = NULL; -static hid_t *last_hid = NULL; -struct hid_struct { - HANDLE handle; - int open; - struct hid_struct *prev; - struct hid_struct *next; -}; -static HANDLE rx_event=NULL; -static HANDLE tx_event=NULL; -static CRITICAL_SECTION rx_mutex; -static CRITICAL_SECTION tx_mutex; - - -// private functions, not intended to be used from outside this file -static void add_hid(hid_t *h); -static hid_t * get_hid(int num); -static void free_all_hid(void); -static void hid_close(hid_t *hid); -void print_win32_err(void); - - - - -// rawhid_recv - receive a packet -// Inputs: -// num = device to receive from (zero based) -// buf = buffer to receive packet -// len = buffer's size -// timeout = time to wait, in milliseconds -// Output: -// number of bytes received, or -1 on error -// -int rawhid_recv(int num, void *buf, int len, int timeout) -{ - hid_t *hid; - unsigned char tmpbuf[516]; - OVERLAPPED ov; - DWORD n, r; - - if (sizeof(tmpbuf) < len + 1) return -1; - hid = get_hid(num); - if (!hid || !hid->open) return -1; - EnterCriticalSection(&rx_mutex); - ResetEvent(&rx_event); - memset(&ov, 0, sizeof(ov)); - ov.hEvent = rx_event; - if (!ReadFile(hid->handle, tmpbuf, len + 1, NULL, &ov)) { - if (GetLastError() != ERROR_IO_PENDING) goto return_error; - r = WaitForSingleObject(rx_event, timeout); - if (r == WAIT_TIMEOUT) goto return_timeout; - if (r != WAIT_OBJECT_0) goto return_error; - } - if (!GetOverlappedResult(hid->handle, &ov, &n, FALSE)) goto return_error; - LeaveCriticalSection(&rx_mutex); - if (n <= 0) return -1; - n--; - if (n > len) n = len; - memcpy(buf, tmpbuf + 1, n); - return n; -return_timeout: - CancelIo(hid->handle); - LeaveCriticalSection(&rx_mutex); - return 0; -return_error: - print_win32_err(); - LeaveCriticalSection(&rx_mutex); - return -1; -} - -// rawhid_send - send a packet -// Inputs: -// num = device to transmit to (zero based) -// buf = buffer containing packet to send -// len = number of bytes to transmit -// timeout = time to wait, in milliseconds -// Output: -// number of bytes sent, or -1 on error -// -int rawhid_send(int num, void *buf, int len, int timeout) -{ - hid_t *hid; - unsigned char tmpbuf[516]; - OVERLAPPED ov; - DWORD n, r; - - if (sizeof(tmpbuf) < len + 1) return -1; - hid = get_hid(num); - if (!hid || !hid->open) return -1; - EnterCriticalSection(&tx_mutex); - ResetEvent(&tx_event); - memset(&ov, 0, sizeof(ov)); - ov.hEvent = tx_event; - tmpbuf[0] = 0; - memcpy(tmpbuf + 1, buf, len); - if (!WriteFile(hid->handle, tmpbuf, len + 1, NULL, &ov)) { - if (GetLastError() != ERROR_IO_PENDING) goto return_error; - r = WaitForSingleObject(tx_event, timeout); - if (r == WAIT_TIMEOUT) goto return_timeout; - if (r != WAIT_OBJECT_0) goto return_error; - } - if (!GetOverlappedResult(hid->handle, &ov, &n, FALSE)) goto return_error; - LeaveCriticalSection(&tx_mutex); - if (n <= 0) return -1; - return n - 1; -return_timeout: - CancelIo(hid->handle); - LeaveCriticalSection(&tx_mutex); - return 0; -return_error: - print_win32_err(); - LeaveCriticalSection(&tx_mutex); - return -1; -} - -// rawhid_open - open 1 or more devices -// -// Inputs: -// max = maximum number of devices to open -// vid = Vendor ID, or -1 if any -// pid = Product ID, or -1 if any -// usage_page = top level usage page, or -1 if any -// usage = top level usage number, or -1 if any -// Output: -// actual number of devices opened -// -int rawhid_open(int max, int vid, int pid, int usage_page, int usage) -{ - GUID guid; - HDEVINFO info; - DWORD index=0, reqd_size; - SP_DEVICE_INTERFACE_DATA iface; - SP_DEVICE_INTERFACE_DETAIL_DATA *details; - HIDD_ATTRIBUTES attrib; - PHIDP_PREPARSED_DATA hid_data; - HIDP_CAPS capabilities; - HANDLE h; - BOOL ret; - hid_t *hid; - int count=0; - - if (first_hid) free_all_hid(); - if (max < 1) return 0; - if (!rx_event) { - rx_event = CreateEvent(NULL, TRUE, TRUE, NULL); - tx_event = CreateEvent(NULL, TRUE, TRUE, NULL); - InitializeCriticalSection(&rx_mutex); - InitializeCriticalSection(&tx_mutex); - } - HidD_GetHidGuid(&guid); - info = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); - if (info == INVALID_HANDLE_VALUE) return 0; - for (index=0; 1 ;index++) { - iface.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); - ret = SetupDiEnumDeviceInterfaces(info, NULL, &guid, index, &iface); - if (!ret) return count; - SetupDiGetInterfaceDeviceDetail(info, &iface, NULL, 0, &reqd_size, NULL); - details = (SP_DEVICE_INTERFACE_DETAIL_DATA *)malloc(reqd_size); - if (details == NULL) continue; - - memset(details, 0, reqd_size); - details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); - ret = SetupDiGetDeviceInterfaceDetail(info, &iface, details, - reqd_size, NULL, NULL); - if (!ret) { - free(details); - continue; - } - h = CreateFile(details->DevicePath, GENERIC_READ|GENERIC_WRITE, - FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, - OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); - free(details); - if (h == INVALID_HANDLE_VALUE) continue; - attrib.Size = sizeof(HIDD_ATTRIBUTES); - ret = HidD_GetAttributes(h, &attrib); - //printf("vid: %4x\n", attrib.VendorID); - if (!ret || (vid > 0 && attrib.VendorID != vid) || - (pid > 0 && attrib.ProductID != pid) || - !HidD_GetPreparsedData(h, &hid_data)) { - CloseHandle(h); - continue; - } - if (!HidP_GetCaps(hid_data, &capabilities) || - (usage_page > 0 && capabilities.UsagePage != usage_page) || - (usage > 0 && capabilities.Usage != usage)) { - HidD_FreePreparsedData(hid_data); - CloseHandle(h); - continue; - } - HidD_FreePreparsedData(hid_data); - hid = (struct hid_struct *)malloc(sizeof(struct hid_struct)); - if (!hid) { - CloseHandle(h); - continue; - } - hid->handle = h; - hid->open = 1; - add_hid(hid); - count++; - if (count >= max) return count; - } - return count; -} - - -// rawhid_close - close a device -// -// Inputs: -// num = device to close (zero based) -// Output -// (nothing) -// -void rawhid_close(int num) -{ - hid_t *hid; - - hid = get_hid(num); - if (!hid || !hid->open) return; - hid_close(hid); -} - - - -static void add_hid(hid_t *h) -{ - if (!first_hid || !last_hid) { - first_hid = last_hid = h; - h->next = h->prev = NULL; - return; - } - last_hid->next = h; - h->prev = last_hid; - h->next = NULL; - last_hid = h; -} - - -static hid_t * get_hid(int num) -{ - hid_t *p; - for (p = first_hid; p && num > 0; p = p->next, num--) ; - return p; -} - - -static void free_all_hid(void) -{ - hid_t *p, *q; - - for (p = first_hid; p; p = p->next) { - hid_close(p); - } - p = first_hid; - while (p) { - q = p; - p = p->next; - free(q); - } - first_hid = last_hid = NULL; -} - - -static void hid_close(hid_t *hid) -{ - CloseHandle(hid->handle); - hid->handle = NULL; -} - - -void print_win32_err(void) -{ - char buf[256]; - DWORD err; - - err = GetLastError(); - FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, - 0, buf, sizeof(buf), NULL); - printf("err %ld: %s\n", err, buf); -} - - - - -