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KeyboardClicker/KeyboardClicker.ino Normal file
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/*
Keyboard Clicker
*/
int outPinsSize = 2;
int outPins[] = { 13, 12 };
int outShift = 0;
int lastCount = 0;
int outBell = 11;
#define RELAY_OFF HIGH
#define RELAY_ON LOW
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
for (int i = 0; i < outPinsSize; i++) {
pinMode(outPins[i], OUTPUT);
digitalWrite(outPins[i], RELAY_OFF);
}
pinMode(outBell, OUTPUT);
digitalWrite(outBell, RELAY_OFF);
// initialize serial:
Serial.begin(115200);
}
void loop() {
}
/*
SerialEvent occurs whenever a new data comes in the hardware serial RX. This
routine is run between each time loop() runs, so using delay inside loop can
delay response.
*/
void serialEvent() {
while (Serial.available()) {
// get the new byte:
char inChar = (char)Serial.read();
//Serial.println(inChar);
if (inChar >= '0' && inChar <= '9') {
int count = inChar - '0';
if (count >= lastCount) {
outShift = (outShift + 1) % outPinsSize;
}
lastCount = count;
for (int i = 0; i < outPinsSize; i++) {
digitalWrite(outPins[(i + outShift) % outPinsSize], ((count > i) ? RELAY_ON : RELAY_OFF));
}
} else {
if (inChar == '(') {
digitalWrite(outBell, RELAY_ON);
delay(20);
digitalWrite(outBell, RELAY_OFF);
}
}
}
}

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README.md Normal file
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# Keyboard Noise Maker
Ever wanted a clicky keyboard but only had a boring quiet one? The solution is here! This is a dedicated hardware "clicker" that you can associate with any USB keyboard. A daemon running on the host computer listens to events from the keyboard and forwards them to an MCU that does the needed clicking.
## Hardware
- Arduino
- Relay module
- Bell(?)
## Software
- USB HID listener attached to a single USB keyboard (tested on Linux)
- output of the listener redirected to Arduino's serial port
## Running
Flash the Arduino code, build the host daemon, run it and redirect it to the Arduino's serial:
```
cd hid_listen
make
sudo ./hid_listen > /dev/ttyUSB0
```
## TODO
- USB device IDs are hard-coded, should be taken as CLI parameters
## Sources
- [USB Raw HID](https://www.pjrc.com/teensy/rawhid.html)

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hid_listen/.gitignore vendored Normal file
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*.a
*.o
binaries/
hid_listen

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hid_listen/Makefile Normal file
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PROG = hid_listen
OS = LINUX
#OS = DARWIN
#OS = WINDOWS
ifeq ($(OS), LINUX)
TARGET = $(PROG)
CC = gcc
STRIP = strip
CFLAGS = -O2 -Wall -D$(OS)
LIBS =
else ifeq ($(OS), DARWIN)
TARGET = $(PROG)
CC = gcc
STRIP = strip
SDK = /Developer/SDKs/MacOSX10.5.sdk
CFLAGS = -O2 -Wall -isysroot $(SDK) -D$(OS) -arch ppc -arch i386
LIBS = -Xlinker -syslibroot -Xlinker $(SDK) -framework IOKit -framework CoreFoundation
else ifeq ($(OS), WINDOWS)
TARGET = $(PROG).exe
CC = i586-mingw32msvc-gcc
STRIP = i586-mingw32msvc-strip
WINDRES = i586-mingw32msvc-windres
CFLAGS = -O2 -Wall -D$(OS)
LIBS = -lhid -lsetupapi
KEY_SPC = ~/bin/cert/mykey.spc
KEY_PVK = ~/bin/cert/mykey.pvk
KEY_TS = http://timestamp.comodoca.com/authenticode
endif
MAKEFLAGS = --jobs=2
OBJS = hid_listen.o rawhid.o
all: $(TARGET)
$(PROG): $(OBJS)
gcc -o $(PROG) $(OBJS) $(LIBS)
$(STRIP) $(PROG)
$(PROG).app: $(PROG) Info.plist
mkdir -p $(PROG).app/Contents/MacOS
mkdir -p $(PROG).app/Contents/Resources/English.lproj
cp Info.plist $(PROG).app/Contents/
echo -n 'APPL????' > $(PROG).app/Contents/PkgInfo
cp $(PROG) $(PROG).app/Contents/MacOS/$(PROG)
cp icons/$(PROG).icns $(PROG).app/Contents/Resources/$(PROG).icns
touch $(PROG).app
$(PROG).dmg: $(PROG).app
hdiutil create -ov -srcfolder $(PROG).app $(PROG).dmg
$(PROG).exe: $(OBJS)
$(CC) $(OBJS) -o $(PROG).exe $(LIBS)
$(STRIP) $(PROG).exe
-signcode -spc $(KEY_SPC) -v $(KEY_PVK) -t $(KEY_TS) $(PROG).exe
resource.o: resource.rs icons/$(PROG).ico
$(WINDRES) -o resource.o resource.rs
clean:
rm -f *.o $(PROG) $(PROG).exe $(PROG).exe.bak $(PROG).dmg
rm -rf $(PROG).app

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GNU GENERAL PUBLIC LICENSE
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not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

97
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/* HID Listen, http://www.pjrc.com/teensy/hid_listen.html
* Listens (and prints) all communication received from a USB HID device,
* which is useful for view debug messages from the Teensy USB Board.
* Copyright 2008, PJRC.COM, LLC
*
* You may redistribute this program and/or modify it under the terms
* of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "rawhid.h"
static void delay_ms(unsigned int msec);
int main(void)
{
char buf[64], *in, *out;
rawhid_t *hid;
int num, count;
int vid = 0x2a7a;//0x13ba;
int pid = 0x0d03;//0x0018;
//printf("Waiting for device:");
fflush(stdout);
while (1) {
hid = rawhid_open_only1(vid, pid, 0, 0);
if (hid == NULL) {
printf(".");
fflush(stdout);
delay_ms(1000);
continue;
}
//printf("\nListening:\n");
while (1) {
num = rawhid_read(hid, buf, sizeof(buf), 200);
if (num < 0) break;
if (num == 0) continue;
in = out = buf;
for (count=0; count<num; count++) {
if (*in) {
*out++ = *in;
}
in++;
}
count = out - buf;
//printf("read %d bytes, %d actual\n", num, count);
printf("%d", count);
if (count) {
for (int i = 0; i < count; i++) {
printf("%c", buf[i]);
}
//num = fwrite(buf, 1, count, stdout);
//fflush(stdout);
}
fflush(stdout);
}
rawhid_close(hid);
//printf("\nDevice disconnected.\nWaiting for new device:");
}
return 0;
}
#if (defined(WIN32) || defined(WINDOWS) || defined(__WINDOWS__))
#include <windows.h>
static void delay_ms(unsigned int msec)
{
Sleep(msec);
}
#else
#include <unistd.h>
static void delay_ms(unsigned int msec)
{
usleep(msec * 1000);
}
#endif

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hid_listen/rawhid.c Normal file
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/* Raw HID I/O Routines
* Copyright 2008, PJRC.COM, LLC
* paul@pjrc.com
*
* You may redistribute this program and/or modify it under the terms
* of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/
*/
// This code will someday be turned into "librawhid", an easy-to-use
// and truly cross platform library for accessing HID reports. But
// there are many complexities not properly handled by this simple
// code that would be expected from a high quality library. In
// particular, how report IDs are handled is not uniform on the 3
// platforms. The mac code uses a single buffer which assumes no
// other functions can cause the "run loop" to process HID callbacks.
// The linux version doesn't extract usage and usage page from the
// report descriptor and just hardcodes a signature for the Teensy
// USB debug example. Lacking from all platforms are functions to
// manage multiple devices and robust detection of device removal
// and attachment. There are probably lots of other issues... this
// code has really only been used in 2 projects. If you use it,
// please report bugs to paul@pjrc.com
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include "rawhid.h"
#ifdef OPERATING_SYSTEM
#undef OPERATING_SYSTEM
#endif
/*************************************************************************/
/** **/
/** Linux **/
/** **/
/*************************************************************************/
#if defined(LINUX) || defined(__LINUX__) || #system(linux)
#define OPERATING_SYSTEM linux
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/hidraw.h>
struct rawhid_struct {
int fd;
int name;
int isok;
};
rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage)
{
struct rawhid_struct *hid;
struct stat devstat;
struct hidraw_devinfo info;
struct hidraw_report_descriptor *desc;
char buf[512];
// TODO; inputs are ignored and hardcoded into this signature....
const unsigned char signature[]={0x06,0x31,0xFF,0x09,0x74};
int r, i, fd=-1, len, found=0;
//printf("Searching for device using hidraw....\n");
for (i=0; i<HIDRAW_MAX_DEVICES; i++) {
if (fd > 0) close(fd);
snprintf(buf, sizeof(buf), "/dev/hidraw%d", i);
r = stat(buf, &devstat);
if (r < 0) continue;
//printf("device: %s\n", buf);
fd = open(buf, O_RDWR);
if (fd < 0) continue;
//printf(" opened\n");
r = ioctl(fd, HIDIOCGRAWINFO, &info);
if (r < 0) continue;
//printf(" vid=%04X, pid=%04X\n", info.vendor & 0xFFFF, info.product & 0xFFFF);
if ((info.vendor & 0xFFFF) != vid
|| (info.product & 0xFFFF) != pid) continue;
r = ioctl(fd, HIDIOCGRDESCSIZE, &len);
if (r < 0 || len < 1) continue;
//printf(" len=%u\n", len);
desc = (struct hidraw_report_descriptor *)buf;
if (len > sizeof(buf)-sizeof(int)) len = sizeof(buf)-sizeof(int);
desc->size = len;
r = ioctl(fd, HIDIOCGRDESC, desc);
if (r < 0) continue;
//printf(" desc ok\n");
if (len >= sizeof(signature)/* &&
memcmp(desc->value, signature, sizeof(signature)) == 0*/) {
//printf(" Match\n");
found = 1;
break;
} else {
//printf(" no match\n");
}
}
if (!found) {
if (fd > 0) close(fd);
return NULL;
}
hid = (struct rawhid_struct *)malloc(sizeof(struct rawhid_struct));
if (!hid) {
close(fd);
return NULL;
}
hid->fd = fd;
return hid;
}
int rawhid_status(rawhid_t *hid)
{
// TODO: how to check if device is still online?
return -1;
}
int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms)
{
struct rawhid_struct *hid;
int num;
hid = (struct rawhid_struct *)h;
if (!hid || hid->fd < 0) return -1;
while (1) {
num = read(hid->fd, buf, bufsize);
if (num < 0) {
if (errno == EINTR || errno == EAGAIN) continue;
if (errno == EIO) {
return -1;
printf("I/O Error\n");
}
printf("read error, r=%d, errno=%d\n", num, errno);
return -1;
}
//printf("read %d bytes\n", num);
return num;
}
}
void rawhid_close(rawhid_t *h)
{
struct rawhid_struct *hid;
hid = (struct rawhid_struct *)h;
if (!hid || hid->fd < 0) return;
close(hid->fd);
hid->fd = -1;
}
#if 0
struct rawhid_list_struct {
int count;
struct rawhid_list_entry {
int name;
int desc_length;
const char *desc;
} dev[HIDRAW_MAX_DEVICES];
};
rawhid_list_t * rawhid_list_open(int vid, int pid, int usage_page, int usage)
{
struct rawhid_list_struct *list;
struct stat devstat;
struct hidraw_devinfo info;
struct hidraw_report_descriptor *desc;
char buf[512], *p;
const unsigned char signature[]={0x06,0x31,0xFF,0x09,0x74};
int r, i, fd=-1, len;
list = (struct rawhid_list_struct *)malloc(sizeof(struct rawhid_list_struct));
if (!list) return NULL;
list->count = 0;
printf("Searching for device using hidraw....\n");
for (i=0; i<HIDRAW_MAX_DEVICES; i++) {
if (fd > 0) close(fd);
snprintf(buf, sizeof(buf), "/dev/hidraw%d", i);
r = stat(buf, &devstat);
if (r < 0) continue;
printf("device: %s\n", buf);
fd = open(buf, O_RDWR);
if (fd < 0) continue;
printf(" opened\n");
r = ioctl(fd, HIDIOCGRAWINFO, &info);
if (r < 0) continue;
printf(" vid=%04X, pid=%04X\n", info.vendor & 0xFFFF, info.product & 0xFFFF);
r = ioctl(fd, HIDIOCGRDESCSIZE, &len);
if (r < 0 || len < 1) continue;
printf(" len=%u\n", len);
desc = (struct hidraw_report_descriptor *)buf;
if (len > sizeof(buf)-sizeof(int)) len = sizeof(buf)-sizeof(int);
desc->size = len;
r = ioctl(fd, HIDIOCGRDESC, desc);
if (r < 0) continue;
if (len < sizeof(signature)) continue;
// TODO: actual report parsing would be nice!
if (memcmp(desc->value, signature, sizeof(signature)) != 0) continue;
p = (char *)malloc(len);
if (!p) continue;
printf(" Match\n");
memcpy(p, desc->value, len);
list->dev[list->count].desc = p;
list->dev[list->count].desc_length = len;
list->dev[list->count].name = i;
list->count++;
}
if (fd > 0) close(fd);
return list;
}
int rawhid_list_count(rawhid_list_t *list)
{
if (!list) return 0;
return ((struct rawhid_list_struct *)list)->count;
}
void rawhid_list_close(rawhid_list_t *list)
{
if (list) free(list);
}
#endif
#endif // linux
/*************************************************************************/
/** **/
/** Mac OS X 10.5 **/
/** **/
/*************************************************************************/
#if (defined(DARWIN) || defined(__DARWIN__)) && !defined(OPERATING_SYSTEM)
#define OPERATING_SYSTEM darwin
#include <IOKit/IOKitLib.h>
#include <IOKit/hid/IOHIDLib.h>
#include <IOKit/hid/IOHIDDevice.h>
#include <unistd.h>
// http://developer.apple.com/technotes/tn2007/tn2187.html
struct rawhid_struct {
IOHIDDeviceRef ref;
int disconnected;
uint8_t *buffer;
int buffer_used;
int buffer_report_id;
};
static void unplug_callback(void *hid, IOReturn ret, void *ref)
{
// This callback can only be called when the "run loop" (managed by macos)
// is run. If the GUI is running it when idle, this will get called
// automatically. If not, the run loop needs to be run explicitly
// before checking the result of this function.
//printf("HID/macos: unplugged callback!\n");
((struct rawhid_struct *)hid)->disconnected = 1;
}
static void input_callback(void *context, IOReturn result, void *sender,
IOHIDReportType type, uint32_t reportID, uint8_t *report,
CFIndex reportLength)
{
struct rawhid_struct *hid;
//printf("input callback\n");
if (!context) return;
hid = (struct rawhid_struct *)context;
hid->buffer_used = reportLength;
hid->buffer_report_id = reportID;
//printf("id = %d, reportLength = %d\n", reportID, (int)reportLength);
//if (hid->ref == sender) printf("ref matches :-)\n");
//if (report == hid->buffer) printf("buffer matches :)\n");
}
rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage)
{
IOHIDManagerRef hid_manager;
CFMutableDictionaryRef dict;
IOReturn ret;
CFSetRef device_set;
IOHIDDeviceRef device_list[256];
uint8_t *buf;
struct rawhid_struct *hid;
int num_devices;
// get access to the HID Manager
hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
if (hid_manager == NULL || CFGetTypeID(hid_manager) != IOHIDManagerGetTypeID()) {
printf("HID/macos: unable to access HID manager");
return NULL;
}
// configure it to look for our type of device
dict = IOServiceMatching(kIOHIDDeviceKey);
if (dict == NULL) {
printf("HID/macos: unable to create iokit dictionary");
return NULL;
}
if (vid > 0) {
CFDictionarySetValue(dict, CFSTR(kIOHIDVendorIDKey),
CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &vid));
}
if (pid > 0) {
CFDictionarySetValue(dict, CFSTR(kIOHIDProductIDKey),
CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &pid));
}
if (usage_page > 0) {
CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsagePageKey),
CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage_page));
}
if (usage > 0) {
CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsageKey),
CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage));
}
IOHIDManagerSetDeviceMatching(hid_manager, dict);
// now open the HID manager
ret = IOHIDManagerOpen(hid_manager, kIOHIDOptionsTypeNone);
if (ret != kIOReturnSuccess) {
printf("HID/macos: Unable to open HID manager (IOHIDManagerOpen failed)");
return NULL;
}
// get a list of devices that match our requirements
device_set = IOHIDManagerCopyDevices(hid_manager);
if (device_set == NULL) {
//printf("HID/macos: no devices found\n");
return NULL;
}
num_devices = (int)CFSetGetCount(device_set);
//printf("number of devices found = %d\n", num_devices);
if (num_devices < 1) {
CFRelease(device_set);
printf("HID/macos: no devices found, even though HID manager returned a set\n");
return NULL;
}
if (num_devices > 256) {
CFRelease(device_set);
printf("HID/macos: too many devices, we get confused if more than 256!\n");
return NULL;
}
CFSetGetValues(device_set, (const void **)&device_list);
CFRelease(device_set);
// open the first device in the list
ret = IOHIDDeviceOpen(device_list[0], kIOHIDOptionsTypeNone);
if (ret != kIOReturnSuccess) {
printf("HID/macos: error opening device\n");
return NULL;
}
// return this device
hid = (struct rawhid_struct *)malloc(sizeof(struct rawhid_struct));
buf = (uint8_t *)malloc(0x1000);
if (hid == NULL || buf == NULL) {
IOHIDDeviceRegisterRemovalCallback(device_list[0], NULL, NULL);
IOHIDDeviceClose(device_list[0], kIOHIDOptionsTypeNone);
printf("HID/macos: Unable to allocate memory\n");
return NULL;
}
hid->ref = device_list[0];
hid->disconnected = 0;
hid->buffer = buf;
hid->buffer_used = 0;
// register a callback to receive input
IOHIDDeviceRegisterInputReportCallback(hid->ref, hid->buffer, 0x1000,
input_callback, hid);
// register a callback to find out when it's unplugged
IOHIDDeviceScheduleWithRunLoop(hid->ref, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
IOHIDDeviceRegisterRemovalCallback(hid->ref, unplug_callback, hid);
return hid;
}
int rawhid_status(rawhid_t *hid)
{
if (!hid) return -1;
// if a GUI is causing the run loop run, this will likely mess it up. Just
// comment it out and if the callback still gets called without this, then
// there's no need to run the run loop here!
while (CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true) == kCFRunLoopRunHandledSource) ;
if (((struct rawhid_struct *)hid)->disconnected) {
//printf("HID/macos: status: disconnected\n");
return -1;
}
//printf("HID/macos: status: ok\n");
return 0;
}
void rawhid_close(rawhid_t *hid)
{
IOHIDDeviceRef ref;
if (!hid) return;
ref = ((struct rawhid_struct *)hid)->ref;
IOHIDDeviceRegisterRemovalCallback(ref, NULL, NULL);
IOHIDDeviceClose(ref, kIOHIDOptionsTypeNone);
free(hid);
}
int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms)
{
struct rawhid_struct *hid;
int r, len;
//printf("begin read\n");
hid = (struct rawhid_struct *)h;
if (!hid || hid->disconnected) return -1;
while (CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true) == kCFRunLoopRunHandledSource) {
if (hid->buffer_used) {
len = hid->buffer_used;
if (len > bufsize) len = bufsize;
memcpy(buf, hid->buffer, len);
hid->buffer_used = 0;
return len;
}
if (hid->disconnected) {
return -1;
}
}
r = CFRunLoopRunInMode(kCFRunLoopDefaultMode, (double)timeout_ms / 1000.0, true);
if (r == kCFRunLoopRunTimedOut) {
//printf("read timeout\n");
return 0;
}
if (hid->buffer_used) {
len = hid->buffer_used;
if (len > bufsize) len = bufsize;
memcpy(buf, hid->buffer, len);
hid->buffer_used = 0;
return len;
}
if (hid->disconnected) return -1;
return 0;
//num = bufsize;
//ret = IOHIDDeviceGetReport(ref, kIOHIDReportTypeInput, 0, buf, &num);
//if (!ret) return -1;
//return num;
}
int rawhid_write(rawhid_t *hid, const void *buf, int len, int timeout_ms)
{
IOReturn ret;
if (((struct rawhid_struct *)hid)->disconnected) return -1;
ret = IOHIDDeviceSetReport(((struct rawhid_struct *)hid)->ref,
kIOHIDReportTypeOutput, 0, buf, len);
if (ret != kIOReturnSuccess) return -1;
return 0;
}
#endif // Darwin - Mac OS X
/*************************************************************************/
/** **/
/** Windows 2000/XP/Vista **/
/** **/
/*************************************************************************/
#if (defined(WIN32) || defined(WINDOWS) || defined(__WINDOWS__)) && !defined(OPERATING_SYSTEM)
#define OPERATING_SYSTEM windows
#include <windows.h>
#include <setupapi.h>
#include <ddk/hidsdi.h>
#include <ddk/hidclass.h>
// http://msdn.microsoft.com/en-us/library/ms790932.aspx
struct rawhid_struct {
HANDLE handle;
};
rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage)
{
GUID guid;
HDEVINFO info;
DWORD index=0, required_size;
SP_DEVICE_INTERFACE_DATA iface;
SP_DEVICE_INTERFACE_DETAIL_DATA *details;
HIDD_ATTRIBUTES attrib;
PHIDP_PREPARSED_DATA hid_data;
HIDP_CAPS capabilities;
struct rawhid_struct *hid;
HANDLE h;
BOOL ret;
HidD_GetHidGuid(&guid);
info = SetupDiGetClassDevs(&guid, NULL, NULL,
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (info == INVALID_HANDLE_VALUE) {
printf("HID/win32: SetupDiGetClassDevs failed");
return NULL;
}
for (index=0; ;index++) {
iface.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
ret = SetupDiEnumDeviceInterfaces(info, NULL, &guid, index, &iface);
if (!ret) {
// end of list
SetupDiDestroyDeviceInfoList(info);
return NULL;
}
SetupDiGetInterfaceDeviceDetail(info, &iface, NULL, 0, &required_size, NULL);
details = (SP_DEVICE_INTERFACE_DETAIL_DATA *)malloc(required_size);
if (details == NULL) continue;
memset(details, 0, required_size);
details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
ret = SetupDiGetDeviceInterfaceDetail(info, &iface, details,
required_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);
if (!ret) {
CloseHandle(h);
continue;
}
//printf("HID/win32: USB Device:\n");
//printf("HID/win32: vid = 0x%04X\n", (int)(attrib.VendorID));
//printf("HID/win32: pid = 0x%04X\n", (int)(attrib.ProductID));
if (vid > 0 && vid != (int)(attrib.VendorID)) {
CloseHandle(h);
continue;
}
if (pid > 0 && pid != (int)(attrib.ProductID)) {
CloseHandle(h);
continue;
}
if (!HidD_GetPreparsedData(h, &hid_data)) {
printf("HID/win32: HidD_GetPreparsedData failed\n");
CloseHandle(h);
continue;
}
if (!HidP_GetCaps(hid_data, &capabilities)) {
printf("HID/win32: HidP_GetCaps failed\n");
HidD_FreePreparsedData(hid_data);
CloseHandle(h);
continue;
}
printf("HID/win32: usage_page = 0x%04X\n", (int)(capabilities.UsagePage));
printf("HID/win32: usage = 0x%04X\n", (int)(capabilities.Usage));
if (usage_page > 0 && usage_page != (int)(capabilities.UsagePage)) {
HidD_FreePreparsedData(hid_data);
CloseHandle(h);
continue;
}
if (usage > 0 && usage != (int)(capabilities.Usage)) {
HidD_FreePreparsedData(hid_data);
CloseHandle(h);
continue;
}
HidD_FreePreparsedData(hid_data);
hid = (struct rawhid_struct *)malloc(sizeof(struct rawhid_struct));
if (!hid) {
CloseHandle(h);
printf("HID/win32: Unable to get %d bytes", sizeof(struct rawhid_struct));
continue;
}
hid->handle = h;
return hid;
}
}
int rawhid_status(rawhid_t *hid)
{
PHIDP_PREPARSED_DATA hid_data;
if (!hid) return -1;
if (!HidD_GetPreparsedData(((struct rawhid_struct *)hid)->handle, &hid_data)) {
printf("HID/win32: HidD_GetPreparsedData failed, device assumed disconnected\n");
return -1;
}
printf("HID/win32: HidD_GetPreparsedData ok, device still online :-)\n");
HidD_FreePreparsedData(hid_data);
return 0;
}
void rawhid_close(rawhid_t *hid)
{
if (!hid) return;
CloseHandle(((struct rawhid_struct *)hid)->handle);
free(hid);
}
int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms)
{
DWORD num=0, result;
BOOL ret;
OVERLAPPED ov;
struct rawhid_struct *hid;
int r;
hid = (struct rawhid_struct *)h;
if (!hid) return -1;
memset(&ov, 0, sizeof(OVERLAPPED));
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (ov.hEvent == NULL) return -1;
ret = ReadFile(hid->handle, buf, bufsize, &num, &ov);
if (ret) {
//printf("HID/win32: read success (immediate)\n");
r = num;
} else {
if (GetLastError() == ERROR_IO_PENDING) {
result = WaitForSingleObject(ov.hEvent, timeout_ms);
if (result == WAIT_OBJECT_0) {
if (GetOverlappedResult(hid->handle, &ov, &num, FALSE)) {
//printf("HID/win32: read success (delayed)\n");
r = num;
} else {
//printf("HID/win32: read failure (delayed)\n");
r = -1;
}
} else {
//printf("HID/win32: read timeout, %lx\n", result);
CancelIo(hid->handle);
r = 0;
}
} else {
//printf("HID/win32: read error (immediate)\n");
r = -1;
}
}
CloseHandle(ov.hEvent);
return r;
}
int rawhid_write(rawhid_t *h, const void *buf, int len, int timeout_ms)
{
DWORD num=0;
BOOL ret;
OVERLAPPED ov;
struct rawhid_struct *hid;
int r;
hid = (struct rawhid_struct *)h;
if (!hid) return -1;
memset(&ov, 0, sizeof(OVERLAPPED));
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (ov.hEvent == NULL) return -1;
// first byte is report ID, must be zero if report IDs not used
ret = WriteFile(hid->handle, buf, len, &num, &ov);
if (ret) {
if (num == len) {
//printf("HID/win32: write success (immediate)\n");
r = 0;
} else {
//printf("HID/win32: partial write (immediate)\n");
r = -1;
}
} else {
if (GetLastError() == ERROR_IO_PENDING) {
if (GetOverlappedResult(hid->handle, &ov, &num, TRUE)) {
if (num == len) {
//printf("HID/win32: write success (delayed)\n");
r = 0;
} else {
//printf("HID/win32: partial write (delayed)\n");
r = -1;
}
} else {
//printf("HID/win32: write error (delayed)\n");
r = -1;
}
} else {
//printf("HID/win32: write error (immediate)\n");
r = -1;
}
}
CloseHandle(ov.hEvent);
return r;
}
#endif // windows
#ifndef OPERATING_SYSTEM
#error Unknown operating system
#endif

23
hid_listen/rawhid.h Normal file
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#ifndef rawhid_included_h__
#define rawhid_included_h__
// Raw HID, Basic API
typedef void rawhid_t;
rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage);
int rawhid_status(rawhid_t *hid);
int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms);
int rawhid_write(rawhid_t *hid, const void *buf, int len, int timeout_ms);
void rawhid_close(rawhid_t *h);
// Raw HID, Multiple Device API
typedef void rawhid_list_t;
rawhid_list_t * rawhid_list_open(int vid, int pid, int usage_page, int usage);
int rawhid_list_count(rawhid_list_t *list);
void rawhid_list_close(rawhid_list_t *list);
int rawhid_list_indexof(rawhid_list_t *list, rawhid_t *hid);
void rawhid_list_remove(rawhid_list_t *list, rawhid_t *hid);
rawhid_t * rawhid_open(rawhid_list_t *list, int index);
#endif