dmrconfig/hid-windows.c
2018-09-17 23:07:42 -07:00

192 lines
6.4 KiB
C

/*
* HID routines for Windows.
*
* Copyright (C) 2018 Serge Vakulenko, KK6ABQ
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <windows.h>
#include <setupapi.h>
#include <hidsdi.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdint.h>
#include "util.h"
HANDLE dev = INVALID_HANDLE_VALUE;; // HID device
static unsigned char receive_buf[42]; // receive buffer
//
// Send a request to the device.
// Store the reply into the rdata[] array.
// Terminate in case of errors.
//
void hid_send_recv(const unsigned char *data, unsigned nbytes, unsigned char *rdata, unsigned rlength)
{
unsigned char buf[42];
unsigned k;
DWORD nbytes_received;
memset(buf, 0, sizeof(buf));
buf[0] = 1;
buf[1] = 0;
buf[2] = nbytes;
buf[3] = nbytes >> 8;
if (nbytes > 0)
memcpy(buf+4, data, nbytes);
nbytes += 4;
if (trace_flag > 0) {
fprintf(stderr, "---Send");
for (k=0; k<nbytes; ++k) {
if (k != 0 && (k & 15) == 0)
fprintf(stderr, "\n ");
fprintf(stderr, " %02x", buf[k]);
}
fprintf(stderr, "\n");
}
nbytes_received = 0;
memset(receive_buf, 0, sizeof(receive_buf));
// Write to HID device.
if (!WriteFile(dev, buf, sizeof(buf), NULL, NULL)) {
fprintf(stderr, "Error %#lx sending to HID device!\n", GetLastError());
exit(-1);
}
// Receive reply.
if (!ReadFile(dev, receive_buf, sizeof(receive_buf), &nbytes_received, NULL)) {
fprintf(stderr, "Error %#lx receiving from HID device!\n", GetLastError());
exit(-1);
}
if (nbytes_received != sizeof(receive_buf)) {
fprintf(stderr, "Short read: %u bytes instead of %u!\n",
(unsigned)nbytes_received, (unsigned)sizeof(receive_buf));
exit(-1);
}
if (trace_flag > 0) {
fprintf(stderr, "---Recv");
for (k=0; k<nbytes_received; ++k) {
if (k != 0 && (k & 15) == 0)
fprintf(stderr, "\n ");
fprintf(stderr, " %02x", receive_buf[k]);
}
fprintf(stderr, "\n");
}
if (receive_buf[0] != 3 || receive_buf[1] != 0 || receive_buf[3] != 0) {
fprintf(stderr, "incorrect reply\n");
exit(-1);
}
if (receive_buf[2] != rlength) {
fprintf(stderr, "incorrect reply length %d, expected %d\n",
receive_buf[2], rlength);
exit(-1);
}
memcpy(rdata, receive_buf+4, rlength);
}
//
// Open the radio in programming mode.
// Find a HID device with given GUID, vendor ID and product ID.
// Setup `dev' file descriptor.
//
int hid_init(int vid, int pid)
{
static GUID guid = { 0x4d1e55b2, 0xf16f, 0x11cf, { 0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30 } };
HDEVINFO devinfo = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);
if (devinfo == INVALID_HANDLE_VALUE) {
printf("Cannot get devinfo!\n");
return -1;
}
// Loop through available devices with a given GUID.
int index;
SP_INTERFACE_DEVICE_DATA iface;
iface.cbSize = sizeof(iface);
dev = INVALID_HANDLE_VALUE;
for (index=0; SetupDiEnumDeviceInterfaces(devinfo, NULL, &guid, index, &iface); ++index) {
// Obtain a required size of device detail structure.
DWORD needed;
SetupDiGetDeviceInterfaceDetail(devinfo, &iface, NULL, 0, &needed, NULL);
// Allocate the device detail structure.
PSP_INTERFACE_DEVICE_DETAIL_DATA detail = (PSP_INTERFACE_DEVICE_DETAIL_DATA)alloca(needed);
detail->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);
SP_DEVINFO_DATA did = { sizeof(SP_DEVINFO_DATA) };
// Get device information.
if (!SetupDiGetDeviceInterfaceDetail(devinfo, &iface, detail, needed, NULL, &did)) {
printf("Device %d: cannot get path!\n", index);
continue;
}
//printf("Device %d: path %s\n", index, detail->DevicePath);
dev = CreateFile(detail->DevicePath, GENERIC_WRITE | GENERIC_READ,
0, NULL, OPEN_EXISTING, 0, NULL);
if (dev == INVALID_HANDLE_VALUE) {
continue;
}
// Get the Vendor ID and Product ID for this device.
HIDD_ATTRIBUTES attrib;
attrib.Size = sizeof(HIDD_ATTRIBUTES);
HidD_GetAttributes(dev, &attrib);
//printf("Vendor/Product: %04x %04x\n", attrib.VendorID, attrib.ProductID);
// Check the VID/PID.
if (attrib.VendorID != vid || attrib.ProductID != pid) {
CloseHandle(dev);
dev = INVALID_HANDLE_VALUE;
continue;
}
// Required device found.
break;
}
SetupDiDestroyDeviceInfoList(devinfo);
if (dev == INVALID_HANDLE_VALUE) {
if (trace_flag) {
fprintf(stderr, "Cannot find HID device %04x:%04x\n", vid, pid);
}
return -1;
}
return 0;
}
//
// Close HID device.
//
void hid_close()
{
if (dev != INVALID_HANDLE_VALUE) {
CloseHandle(dev);
dev = INVALID_HANDLE_VALUE;
}
}