usb lib

git-svn-id: https://svn.spreadspace.org/mur.sat@415 7de4ea59-55d0-425e-a1af-a3118ea81d4c

12 files changed, 2319 insertions, 20 deletions

diff --git a/software/hhd70dongle/Makefile b/software/hhd70dongle/Makefile
index 7a90422..2b9b239 100644
--- a/software/hhd70dongle/Makefile
+++ b/software/hhd70dongle/Makefile
@@ -21,7 +21,8 @@
 ##

 

 NAME := hhd70dongle

-OBJ := hhd70dongle.o led.o spi.o

+OBJ := hhd70dongle.o led.o spi.o usb_rawhid.o

 BOARD_TYPE := teensy2

 

 include ../teensy.include.mk

+CFLAGS += -std=gnu99

diff --git a/software/hhd70dongle/hhd70dongle.c b/software/hhd70dongle/hhd70dongle.c
index 04be5b5..03b4e06 100644
--- a/software/hhd70dongle/hhd70dongle.c
+++ b/software/hhd70dongle/hhd70dongle.c
@@ -34,20 +34,30 @@
 

 #include "led.h"

 #include "spi.h"

+#include "usb_rawhid.h"

 

 #define CPU_PRESCALE(n)	(CLKPR = 0x80, CLKPR = (n))

+uint8_t read_buffer[64]; // buffer for reading usb signals

+uint8_t write_buffer[64]; // buffer for writing usb signals

 

 int main(void)

 { 

-  CPU_PRESCALE(0);

-  led_init();

-  spi_init();

+    CPU_PRESCALE(0);

+    led_init();

+    spi_init();

+    usb_init();

+    while (!usb_configured()) /* wait */ ;

 

-  for(;;) {

-    _delay_ms(250);

-    led_toggle();

-    char buf[10];

-    unsigned int len;

-    spi_read(sizeof(buf),buf,&len);

-  }

+    //int8_t r = usb_rawhid_recv(read_buffer, 0); 

+    //usb_rawhid_send(write_buffer, 23);

+    

+    

+    for(;;) 

+    {

+        _delay_ms(250);

+        led_toggle();

+        char buf[10];

+        unsigned int len;

+        spi_read(sizeof(buf),buf,&len);

+    }

 }

diff --git a/software/hhd70dongle/pcusbhid/Makefile b/software/hhd70dongle/pcusbhid/Makefile
new file mode 100644
index 0000000..c6689ed
--- /dev/null
+++ b/software/hhd70dongle/pcusbhid/Makefile
@@ -0,0 +1,62 @@
+
+OS = LINUX
+#OS = MACOSX
+#OS = WINDOWS
+
+PROG = rawhid_testinterface
+
+# To set up Ubuntu Linux to cross compile for Windows:
+#
+#    apt-get install mingw32 mingw32-binutils mingw32-runtime
+#
+# Just edit the variable above for WINDOWS, then use "make" to build rawhid.exe
+
+ifeq ($(OS), LINUX)
+TARGET = $(PROG)
+CC = gcc
+STRIP = strip
+CFLAGS = -Wall -O2 -DOS_$(OS)
+LIBS = -lusb
+else ifeq ($(OS), MACOSX)
+TARGET = $(PROG).dmg
+SDK = /Developer/SDKs/MacOSX10.5.sdk
+ARCH = -mmacosx-version-min=10.5 -arch ppc -arch i386
+CC = gcc
+STRIP = strip
+CFLAGS = -Wall -O2 -DOS_$(OS) -isysroot $(SDK) $(ARCH)
+LIBS = $(ARCH) -Wl,-syslibroot,$(SDK) -framework IOKit -framework CoreFoundation
+else ifeq ($(OS), WINDOWS)
+TARGET = $(PROG).exe
+CC = i586-mingw32msvc-gcc
+STRIP = i586-mingw32msvc-strip
+CFLAGS = -Wall -O2 -DOS_$(OS)
+LIBS = -lhid -lsetupapi
+endif
+
+OBJS = $(PROG).o hid.o
+
+
+all: $(TARGET)
+
+$(PROG): $(OBJS)
+	$(CC) -o $(PROG) $(OBJS) $(LIBS)
+	$(STRIP) $(PROG)
+
+$(PROG).exe: $(PROG)
+	cp $(PROG) $(PROG).exe
+
+$(PROG).dmg: $(PROG)
+	mkdir tmp
+	cp $(PROG) tmp
+	hdiutil create -ov -volname "Raw HID Test" -srcfolder tmp $(PROG).dmg
+
+hid.o: hid_$(OS).c hid.h
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+reset.o: reset.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+clean:
+	rm -f *.o $(PROG) $(PROG).exe $(PROG).dmg
+	rm -rf tmp
+
diff --git a/software/hhd70dongle/pcusbhid/hid.h b/software/hhd70dongle/pcusbhid/hid.h
new file mode 100644
index 0000000..4d83703
--- /dev/null
+++ b/software/hhd70dongle/pcusbhid/hid.h
@@ -0,0 +1,6 @@
+
+int rawhid_open(int max, int vid, int pid, int usage_page, int usage);
+int rawhid_recv(int num, void *buf, int len, int timeout);
+int rawhid_send(int num, void *buf, int len, int timeout);
+void rawhid_close(int num);
+
diff --git a/software/hhd70dongle/pcusbhid/hid_LINUX.c b/software/hhd70dongle/pcusbhid/hid_LINUX.c
new file mode 100644
index 0000000..8e98113
--- /dev/null
+++ b/software/hhd70dongle/pcusbhid/hid_LINUX.c
@@ -0,0 +1,381 @@
+/* Simple Raw HID functions for Linux - 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 <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <usb.h>
+
+#include "hid.h"
+
+
+// On Linux there are several options to access HID devices.
+//
+// libusb 0.1 - the only way that works well on all distributions
+// libusb 1.0 - someday will become standard on most distributions
+// hidraw driver - relatively new, not supported on many distributions (yet)
+// hiddev driver - old, ubuntu, fedora, others dropping support
+// usbfs - low level usb API: http://www.kernel.org/doc/htmldocs/usb.html#usbfs
+//
+// This code uses libusb 0.1, which is well supported on all linux distributions
+// and very stable and widely used by many programs.  libusb 0.1 only provides a
+// simple synchronous interface, basically the same as this code needs.  However,
+// if you want non-blocking I/O, libusb 0.1 simply does not provide that.  There
+// is also no kernel-level buffering, so performance is poor.
+//
+// UPDATE: As of November 2011, hidraw support seems to be working well in all
+// major linux distributions.  Embedded and "small" distros, used on ARM boards,
+// routers and embedded hardware stil seem to omit the hidraw driver.
+//
+// The hidraw driver is a great solution.  However, it has only been supported
+// by relatively recent (in 2009) kernels.  Here is a quick survey of the status
+// of hidraw support in various distributions as of Sept 2009:
+//
+// Fedora 11: works, kernel 2.6.29.4
+// Mandiva 2009.1: works, kernel 2.6.29.1
+// Ubuntu 9.10-alpha6: works, kernel 2.6.31
+// Ubuntu 9.04: sysfs attrs chain broken (hidraw root only), 2.6.28 kernel
+// openSUSE 11.1: sysfs attrs chain broken (hidraw root only), 2.6.27.7 kernel
+// Debian Live, Lenny 5.0.2: sysfs attrs chain broken (hidraw root only), 2.6.26
+// SimplyMEPIS 8.0.10: sysfs attrs chain broken (hidraw root only), 2.6.27
+// Mint 7: sysfs attrs chain broken (hidraw root only), 2.6.28 kernel
+// Gentoo 2008.0-r1: sysfs attrs chain broken (hidraw root only), 2.6.24 kernel
+// Centos 5: no hidraw or hiddev devices, 2.6.18 kernel
+// Slitaz 2.0: no hidraw devices (has hiddev), 2.6.25.5 kernel
+// Puppy 4.3: no hidraw devices (has hiddev), 2.6.30.5 kernel
+// Damn Small 4.4.10: (would not boot)
+// Gentoo 10.0-test20090926: (would not boot)
+// PCLinuxOS 2009.2: (would not boot) 
+// Slackware: (no live cd available?  www.slackware-live.org dead)
+
+
+
+#define printf(...)  // comment this out for lots of info
+
+
+// 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 {
+	usb_dev_handle *usb;
+	int open;
+	int iface;
+	int ep_in;
+	int ep_out;
+	struct hid_struct *prev;
+	struct hid_struct *next;
+};
+
+
+// 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);
+static int hid_parse_item(uint32_t *val, uint8_t **data, const uint8_t *end);
+
+
+//  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;
+	int r;
+
+	hid = get_hid(num);
+	if (!hid || !hid->open) return -1;
+	r = usb_interrupt_read(hid->usb, hid->ep_in, buf, len, timeout);
+	if (r >= 0) return r;
+	if (r == -110) return 0;  // timeout
+	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;
+
+	hid = get_hid(num);
+	if (!hid || !hid->open) return -1;
+	if (hid->ep_out) {
+		return usb_interrupt_write(hid->usb, hid->ep_out, buf, len, timeout);
+	} else {
+		return usb_control_msg(hid->usb, 0x21, 9, 0, hid->iface, buf, len, timeout);
+	}
+}
+
+//  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)
+{
+	struct usb_bus *bus;
+	struct usb_device *dev;
+	struct usb_interface *iface;
+	struct usb_interface_descriptor *desc;
+	struct usb_endpoint_descriptor *ep;
+	usb_dev_handle *u;
+	uint8_t buf[1024], *p;
+	int i, n, len, tag, ep_in, ep_out, count=0, claimed;
+	uint32_t val=0, parsed_usage, parsed_usage_page;
+	hid_t *hid;
+
+	if (first_hid) free_all_hid();
+	printf("rawhid_open, max=%d\n", max);
+	if (max < 1) return 0;
+	usb_init();
+	usb_find_busses();
+	usb_find_devices();
+	for (bus = usb_get_busses(); bus; bus = bus->next) {
+		for (dev = bus->devices; dev; dev = dev->next) {
+			if (vid > 0 && dev->descriptor.idVendor != vid) continue;
+			if (pid > 0 && dev->descriptor.idProduct != pid) continue;
+			if (!dev->config) continue;
+			if (dev->config->bNumInterfaces < 1) continue;
+			printf("device: vid=%04X, pic=%04X, with %d iface\n",
+				dev->descriptor.idVendor,
+				dev->descriptor.idProduct,
+				dev->config->bNumInterfaces);
+			iface = dev->config->interface;
+			u = NULL;
+			claimed = 0;
+			for (i=0; i<dev->config->bNumInterfaces && iface; i++, iface++) {
+				desc = iface->altsetting;
+				if (!desc) continue;
+				printf("  type %d, %d, %d\n", desc->bInterfaceClass,
+					desc->bInterfaceSubClass, desc->bInterfaceProtocol);
+				if (desc->bInterfaceClass != 3) continue;
+				if (desc->bInterfaceSubClass != 0) continue;
+				if (desc->bInterfaceProtocol != 0) continue;
+				ep = desc->endpoint;
+				ep_in = ep_out = 0;
+				for (n = 0; n < desc->bNumEndpoints; n++, ep++) {
+					if (ep->bEndpointAddress & 0x80) {
+						if (!ep_in) ep_in = ep->bEndpointAddress & 0x7F;
+						printf("    IN endpoint %d\n", ep_in);
+					} else {
+						if (!ep_out) ep_out = ep->bEndpointAddress;
+						printf("    OUT endpoint %d\n", ep_out);
+					}
+				}
+				if (!ep_in) continue;
+				if (!u) {
+					u = usb_open(dev);
+					if (!u) {
+						printf("  unable to open device\n");
+						break;
+					}
+				}
+				printf("  hid interface (generic)\n");
+				if (usb_get_driver_np(u, i, (char *)buf, sizeof(buf)) >= 0) {
+					printf("  in use by driver \"%s\"\n", buf);
+					if (usb_detach_kernel_driver_np(u, i) < 0) {
+						printf("  unable to detach from kernel\n");
+						continue;
+					}
+				}
+				if (usb_claim_interface(u, i) < 0) {
+					printf("  unable claim interface %d\n", i);
+					continue;
+				}
+				len = usb_control_msg(u, 0x81, 6, 0x2200, i, (char *)buf, sizeof(buf), 250);
+					printf("  descriptor, len=%d\n", len);
+				if (len < 2) {
+					usb_release_interface(u, i);
+					continue;
+				}
+				p = buf;
+				parsed_usage_page = parsed_usage = 0;
+				while ((tag = hid_parse_item(&val, &p, buf + len)) >= 0) {
+					printf("  tag: %X, val %X\n", tag, val);
+					if (tag == 4) parsed_usage_page = val;
+					if (tag == 8) parsed_usage = val;
+					if (parsed_usage_page && parsed_usage) break;
+				}
+				if ((!parsed_usage_page) || (!parsed_usage) ||
+				  (usage_page > 0 && parsed_usage_page != usage_page) || 
+				  (usage > 0 && parsed_usage != usage)) {
+					usb_release_interface(u, i);
+					continue;
+				}
+				hid = (struct hid_struct *)malloc(sizeof(struct hid_struct));
+				if (!hid) {
+					usb_release_interface(u, i);
+					continue;
+				}
+				hid->usb = u;
+				hid->iface = i;
+				hid->ep_in = ep_in;
+				hid->ep_out = ep_out;
+				hid->open = 1;
+				add_hid(hid);
+				claimed++;
+				count++;
+				if (count >= max) return count;
+			}
+			if (u && !claimed) usb_close(u);
+		}
+	}
+	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);
+}
+
+// Chuck Robey wrote a real HID report parser
+// (chuckr@telenix.org) chuckr@chuckr.org
+// http://people.freebsd.org/~chuckr/code/python/uhidParser-0.2.tbz
+// this tiny thing only needs to extract the top-level usage page
+// and usage, and even then is may not be truly correct, but it does
+// work with the Teensy Raw HID example.
+static int hid_parse_item(uint32_t *val, uint8_t **data, const uint8_t *end)
+{
+	const uint8_t *p = *data;
+	uint8_t tag;
+	int table[4] = {0, 1, 2, 4};
+	int len;
+
+	if (p >= end) return -1;
+	if (p[0] == 0xFE) {
+		// long item, HID 1.11, 6.2.2.3, page 27
+		if (p + 5 >= end || p + p[1] >= end) return -1;
+		tag = p[2];
+		*val = 0;
+		len = p[1] + 5;
+	} else {
+		// short item, HID 1.11, 6.2.2.2, page 26
+		tag = p[0] & 0xFC;
+		len = table[p[0] & 0x03];
+		if (p + len + 1 >= end) return -1;
+		switch (p[0] & 0x03) {
+		  case 3: *val = p[1] | (p[2] << 8) | (p[3] << 16) | (p[4] << 24); break;
+		  case 2: *val = p[1] | (p[2] << 8); break;
+		  case 1: *val = p[1]; break;
+		  case 0: *val = 0; break;
+		}
+	}
+	*data += len + 1;
+	return tag;
+}
+
+
+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)
+{
+	hid_t *p;
+	int others=0;
+
+	usb_release_interface(hid->usb, hid->iface);
+	for (p = first_hid; p; p = p->next) {
+		if (p->open && p->usb == hid->usb) others++;
+	}
+	if (!others) usb_close(hid->usb);
+	hid->usb = NULL;
+}
+
+
+
diff --git a/software/hhd70dongle/pcusbhid/hid_MACOSX.c b/software/hhd70dongle/pcusbhid/hid_MACOSX.c
new file mode 100644
index 0000000..c5d5d1b
--- /dev/null
+++ b/software/hhd70dongle/pcusbhid/hid_MACOSX.c
@@ -0,0 +1,412 @@
+/* Simple Raw HID functions for Linux - 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 <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <IOKit/IOKitLib.h>
+#include <IOKit/hid/IOHIDLib.h>
+
+#include "hid.h"
+
+#define BUFFER_SIZE 64
+
+#define printf(...) // comment this out to get lots of info printed
+
+
+// a list of all opened HID devices, so the caller can
+// simply refer to them by number
+typedef struct hid_struct hid_t;
+typedef struct buffer_struct buffer_t;
+static hid_t *first_hid = NULL;
+static hid_t *last_hid = NULL;
+struct hid_struct {
+	IOHIDDeviceRef ref;
+	int open;
+	uint8_t buffer[BUFFER_SIZE];
+	buffer_t *first_buffer;
+	buffer_t *last_buffer;
+	struct hid_struct *prev;
+	struct hid_struct *next;
+};
+struct buffer_struct {
+	struct buffer_struct *next;
+	uint32_t len;
+	uint8_t buf[BUFFER_SIZE];
+};
+
+// private functions, not intended to be used from outside this file
+static void add_hid(hid_t *);
+static hid_t * get_hid(int);
+static void free_all_hid(void);
+static void hid_close(hid_t *);
+static void attach_callback(void *, IOReturn, void *, IOHIDDeviceRef);
+static void detach_callback(void *, IOReturn, void *hid_mgr, IOHIDDeviceRef dev);
+static void timeout_callback(CFRunLoopTimerRef, void *);
+static void input_callback(void *, IOReturn, void *, IOHIDReportType,
+	 uint32_t, uint8_t *, CFIndex);
+
+
+
+//  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;
+	buffer_t *b;
+	CFRunLoopTimerRef timer=NULL;
+	CFRunLoopTimerContext context;
+	int ret=0, timeout_occurred=0;
+
+	if (len < 1) return 0;
+	hid = get_hid(num);
+	if (!hid || !hid->open) return -1;
+	if ((b = hid->first_buffer) != NULL) {
+		if (len > b->len) len = b->len;
+		memcpy(buf, b->buf, len);
+		hid->first_buffer = b->next;
+		free(b);
+		return len;
+	}
+	memset(&context, 0, sizeof(context));
+	context.info = &timeout_occurred;
+	timer = CFRunLoopTimerCreate(NULL, CFAbsoluteTimeGetCurrent() +
+		(double)timeout / 1000.0, 0, 0, 0, timeout_callback, &context);
+	CFRunLoopAddTimer(CFRunLoopGetCurrent(), timer, kCFRunLoopDefaultMode);
+	while (1) {
+		CFRunLoopRun();
+		if ((b = hid->first_buffer) != NULL) {
+			if (len > b->len) len = b->len;
+			memcpy(buf, b->buf, len);
+			hid->first_buffer = b->next;
+			free(b);
+			ret = len;
+			break;
+		}
+		if (!hid->open) {
+			printf("rawhid_recv, device not open\n");
+			ret = -1;
+			break;
+		}
+		if (timeout_occurred) break;
+	}
+	CFRunLoopTimerInvalidate(timer);
+	CFRelease(timer);
+	return ret;
+}
+
+static void input_callback(void *context, IOReturn ret, void *sender,
+	IOHIDReportType type, uint32_t id, uint8_t *data, CFIndex len)
+{
+	buffer_t *n;
+	hid_t *hid;
+
+	printf("input_callback\n");
+	if (ret != kIOReturnSuccess || len < 1) return;
+	hid = context;
+	if (!hid || hid->ref != sender) return;
+	n = (buffer_t *)malloc(sizeof(buffer_t));
+	if (!n) return;
+	if (len > BUFFER_SIZE) len = BUFFER_SIZE;
+	memcpy(n->buf, data, len);
+	n->len = len;
+	n->next = NULL;
+	if (!hid->first_buffer || !hid->last_buffer) {
+		hid->first_buffer = hid->last_buffer = n;
+	} else {
+		hid->last_buffer->next = n;
+		hid->last_buffer = n;
+	}
+	CFRunLoopStop(CFRunLoopGetCurrent());
+}
+
+static void timeout_callback(CFRunLoopTimerRef timer, void *info)
+{
+	printf("timeout_callback\n");
+	*(int *)info = 1;
+	CFRunLoopStop(CFRunLoopGetCurrent());
+}
+
+
+void output_callback(void *context, IOReturn ret, void *sender,
+	IOHIDReportType type, uint32_t id, uint8_t *data, CFIndex len)
+{
+	printf("output_callback, r=%d\n", ret);
+	if (ret == kIOReturnSuccess) {
+		*(int *)context = len;
+	} else {
+		// timeout if not success?
+		*(int *)context = 0;
+	}
+	CFRunLoopStop(CFRunLoopGetCurrent());
+}
+
+
+//  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;
+	int result=-100;
+
+	hid = get_hid(num);
+	if (!hid || !hid->open) return -1;
+#if 1
+	#warning "Send timeout not implemented on MACOSX"
+	IOReturn ret = IOHIDDeviceSetReport(hid->ref, kIOHIDReportTypeOutput, 0, buf, len);
+	result = (ret == kIOReturnSuccess) ? len : -1;
+#endif
+#if 0
+	// No matter what I tried this never actually sends an output
+	// report and output_callback never gets called.  Why??
+	// Did I miss something?  This is exactly the same params as
+	// the sync call that works.  Is it an Apple bug?
+	// (submitted to Apple on 22-sep-2009, problem ID 7245050)
+	//
+	IOHIDDeviceScheduleWithRunLoop(hid->ref, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
+	// should already be scheduled with run loop by attach_callback,
+	// sadly this doesn't make any difference either way
+
+	// could this be related?
+	// http://lists.apple.com/archives/usb/2008/Aug/msg00021.html
+	//
+	IOHIDDeviceSetReportWithCallback(hid->ref, kIOHIDReportTypeOutput,
+		0, buf, len, (double)timeout / 1000.0, output_callback, &result);
+	while (1) {
+		printf("enter run loop (send)\n");
+		CFRunLoopRun();
+		printf("leave run loop (send)\n");
+		if (result > -100) break;
+		if (!hid->open) {
+			result = -1;
+			break;
+		}
+	}
+#endif
+	return result;
+}
+
+
+//  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)
+{
+        static IOHIDManagerRef hid_manager=NULL;
+        CFMutableDictionaryRef dict;
+        CFNumberRef num;
+        IOReturn ret;
+	hid_t *p;
+	int count=0;
+
+	if (first_hid) free_all_hid();
+	printf("rawhid_open, max=%d\n", max);
+	if (max < 1) return 0;
+        // Start the HID Manager
+        // http://developer.apple.com/technotes/tn2007/tn2187.html
+	if (!hid_manager) {
+        	hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
+        	if (hid_manager == NULL || CFGetTypeID(hid_manager) != IOHIDManagerGetTypeID()) {
+                	if (hid_manager) CFRelease(hid_manager);
+                	return 0;
+        	}
+	}
+	if (vid > 0 || pid > 0 || usage_page > 0 || usage > 0) {
+		// Tell the HID Manager what type of devices we want
+        	dict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
+                	&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+        	if (!dict) return 0;
+		if (vid > 0) {
+			num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &vid);
+			CFDictionarySetValue(dict, CFSTR(kIOHIDVendorIDKey), num);
+			CFRelease(num);
+		}
+		if (pid > 0) {
+			num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &pid);
+			CFDictionarySetValue(dict, CFSTR(kIOHIDProductIDKey), num);
+			CFRelease(num);
+		}
+		if (usage_page > 0) {
+			num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage_page);
+			CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsagePageKey), num);
+			CFRelease(num);
+		}
+		if (usage > 0) {
+			num = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage);
+			CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsageKey), num);
+			CFRelease(num);
+		}
+        	IOHIDManagerSetDeviceMatching(hid_manager, dict);
+        	CFRelease(dict);
+	} else {
+        	IOHIDManagerSetDeviceMatching(hid_manager, NULL);
+	}
+	// set up a callbacks for device attach & detach
+        IOHIDManagerScheduleWithRunLoop(hid_manager, CFRunLoopGetCurrent(),
+		kCFRunLoopDefaultMode);
+        IOHIDManagerRegisterDeviceMatchingCallback(hid_manager, attach_callback, NULL);
+	IOHIDManagerRegisterDeviceRemovalCallback(hid_manager, detach_callback, NULL);
+        ret = IOHIDManagerOpen(hid_manager, kIOHIDOptionsTypeNone);
+        if (ret != kIOReturnSuccess) {
+                IOHIDManagerUnscheduleFromRunLoop(hid_manager,
+                        CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
+                CFRelease(hid_manager);
+                return 0;
+        }
+	printf("run loop\n");
+	// let it do the callback for all devices
+	while (CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true) == kCFRunLoopRunHandledSource) ;
+	// count up how many were added by the callback
+	for (p = first_hid; p; p = p->next) 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);
+	hid->open = 0;
+}
+
+
+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)
+{
+	if (!hid || !hid->open || !hid->ref) return;
+	IOHIDDeviceUnscheduleFromRunLoop(hid->ref, CFRunLoopGetCurrent( ), kCFRunLoopDefaultMode);
+	IOHIDDeviceClose(hid->ref, kIOHIDOptionsTypeNone);
+	hid->ref = NULL;
+}
+
+static void detach_callback(void *context, IOReturn r, void *hid_mgr, IOHIDDeviceRef dev)
+{
+	hid_t *p;
+
+	printf("detach callback\n");
+	for (p = first_hid; p; p = p->next) {
+		if (p->ref == dev) {
+			p->open = 0;
+			CFRunLoopStop(CFRunLoopGetCurrent());
+			return;
+		}
+	}
+}
+
+
+static void attach_callback(void *context, IOReturn r, void *hid_mgr, IOHIDDeviceRef dev)
+{
+	struct hid_struct *h;
+
+	printf("attach callback\n");
+	if (IOHIDDeviceOpen(dev, kIOHIDOptionsTypeNone) != kIOReturnSuccess) return;
+	h = (hid_t *)malloc(sizeof(hid_t));
+	if (!h) return;
+	memset(h, 0, sizeof(hid_t));
+	IOHIDDeviceScheduleWithRunLoop(dev, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
+	IOHIDDeviceRegisterInputReportCallback(dev, h->buffer, sizeof(h->buffer),
+		input_callback, h);
+	h->ref = dev;
+	h->open = 1;
+	add_hid(h);
+}
+
+
diff --git a/software/hhd70dongle/pcusbhid/hid_WINDOWS.c b/software/hhd70dongle/pcusbhid/hid_WINDOWS.c
new file mode 100644
index 0000000..0718773
--- /dev/null
+++ b/software/hhd70dongle/pcusbhid/hid_WINDOWS.c
@@ -0,0 +1,328 @@
+/* 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 <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <windows.h>
+#include <setupapi.h>
+#include <ddk/hidsdi.h>
+#include <ddk/hidclass.h>
+
+#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);
+}
+
+
+
+
+
diff --git a/software/hhd70dongle/pcusbhid/rawhid_testinterface.c b/software/hhd70dongle/pcusbhid/rawhid_testinterface.c
new file mode 100644
index 0000000..8f19c4f
--- /dev/null
+++ b/software/hhd70dongle/pcusbhid/rawhid_testinterface.c
@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/time.h>
+#include <unistd.h>
+#if defined(OS_LINUX) || defined(OS_MACOSX)
+#include <sys/ioctl.h>
+#include <termios.h>
+#elif defined(OS_WINDOWS)
+#include <conio.h>
+#endif
+
+#include "hid.h"
+
+
+void sendstr(char * tosend)
+{
+  rawhid_send(0, tosend, strlen(tosend),1000);
+}
+
+int mtime_diff(struct timeval high,struct timeval low)
+{
+  int result=1000*(high.tv_sec-low.tv_sec);
+  result+=high.tv_usec/1000-low.tv_usec/1000;
+  return result;
+}
+
+#define BUF_LEN 64
+
+int main (int argc, char *argv[])
+{
+    int i, r, num;
+    char buf[BUF_LEN];
+    // C-based example is 16C0:0480:FFAB:0200
+    unsigned int attemtps = 100;
+    while(attemtps--)
+    {
+        r = rawhid_open(1, 0x16C0, 0x0481, 0xFFAB, 0x0200);
+        if (r > 0)
+            break;
+        else
+            sleep(1.0);
+    }
+    if (r <= 0)
+    {
+        printf("no rawhid device found\n");
+        return -1;
+    }    
+    printf("found rawhid device\n\n");
+    //~ printf("Clearing Buffer\n");  
+    //~ sendstr("c"); // clear the buffer  
+    size_t len;
+    //~ struct timeval start_time,stop_time;
+    //~ gettimeofday(&start_time,NULL);
+    //~ gettimeofday(&stop_time,NULL);
+    //~ while (mtime_diff(stop_time,start_time)<1000) {
+    // check if any Raw HID packet has arrived
+    
+    while (1)
+    {
+        num = rawhid_recv(0, buf, BUF_LEN, 220);
+        if (num < 0)
+        {
+            printf("\nerror reading, device went offline\n");
+            rawhid_close(0);
+            return 0;
+        }
+        else if (num == 0)
+        {
+            sleep(1.0);
+        }
+        buf[num]='\0';
+        printf("%s\n",buf);
+    }
+}
diff --git a/software/hhd70dongle/spi.c b/software/hhd70dongle/spi.c
index 618c581..ab5d5b2 100644
--- a/software/hhd70dongle/spi.c
+++ b/software/hhd70dongle/spi.c
@@ -69,25 +69,23 @@ void spi_write(char* data, unsigned int len)
     //enable SS of CC1101
     PORTB |= (1<<CS);
 
-    for (unsigned int c=0; c++; c<len)
-        spi_write_byte(data[c])
+    for (unsigned int c=0; c<len; c++)
+        spi_write_byte(data[c]);
     
     //disable SS of CC1101
     PORTB &= ~(1<<CS);
 }
 
-void spi_read(unsigned int maxlen, char* data)
+void spi_read(unsigned int maxlen, char *data, unsigned int *len)
 {
     PORTB |= (1<<CS);
 
     while(SPI_PINB_REG & (1<<MISO)); /* wait for CC1101 to get ready... */
 
     SPDR = 0x80;
-    unsigned int len = 0;
-    while(len < maxlen && !(SPSR & (1<<SPIF)))
-    {
-        data[len++]=SPSR
-    }
+    len = 0;
+    while(*len < maxlen && !(SPSR & (1<<SPIF)))
+        data[*len++]=SPSR;
     PORTB &= ~(1<<CS);
 }
 
diff --git a/software/hhd70dongle/spi.h b/software/hhd70dongle/spi.h
index 1243122..6346c05 100644
--- a/software/hhd70dongle/spi.h
+++ b/software/hhd70dongle/spi.h
@@ -36,6 +36,6 @@
 void spi_init(void);
 void spi_write_byte(char byte);
 void spi_write(char* data,unsigned int len);
-void spi_read(unsigned int maxlen, char* data, unsigned int* len);
+void spi_read(unsigned int maxlen, char *data, unsigned int *len);
 
 #endif
diff --git a/software/hhd70dongle/usb_rawhid.c b/software/hhd70dongle/usb_rawhid.c
new file mode 100644
index 0000000..1c94ca6
--- /dev/null
+++ b/software/hhd70dongle/usb_rawhid.c
@@ -0,0 +1,940 @@
+/* Teensy RawHID example
+ * http://www.pjrc.com/teensy/rawhid.html
+ * Copyright (c) 2009 PJRC.COM, LLC
+ * 
+ * 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
+// Version 1.1: fixed bug in analog
+
+#define USB_PRIVATE_INCLUDE
+#include "usb_rawhid.h"
+
+/**************************************************************************
+ *
+ *  Configurable Options
+ *
+ **************************************************************************/
+
+// You can change these to give your code its own name.
+#define STR_MANUFACTURER	L"realraum"
+#define STR_PRODUCT		L"rf433rxtx"
+
+// These 4 numbers identify your device.  Set these to
+// something that is (hopefully) not used by any others!
+#define VENDOR_ID		0x16C0
+#define PRODUCT_ID		0x0481
+#define RAWHID_USAGE_PAGE	0xFFAB	// recommended: 0xFF00 to 0xFFFF
+#define RAWHID_USAGE		0x0200	// recommended: 0x0100 to 0xFFFF
+
+// These determine the bandwidth that will be allocated
+// for your communication.  You do not need to use it
+// all, but allocating more than necessary means reserved
+// bandwidth is no longer available to other USB devices.
+#define RAWHID_TX_SIZE		64	// transmit packet size
+#define RAWHID_TX_INTERVAL	2	// max # of ms between transmit packets
+#define RAWHID_RX_SIZE		64	// receive packet size
+#define RAWHID_RX_INTERVAL	8	// max # of ms between receive packets
+
+
+/**************************************************************************
+ *
+ *  Endpoint Buffer Configuration
+ *
+ **************************************************************************/
+
+#define ENDPOINT0_SIZE		32
+#define RAWHID_INTERFACE	0
+#define RAWHID_TX_ENDPOINT	1
+#define RAWHID_RX_ENDPOINT	2
+
+#if defined(__AVR_AT90USB162__)
+#define RAWHID_TX_BUFFER	EP_SINGLE_BUFFER
+#define RAWHID_RX_BUFFER	EP_SINGLE_BUFFER
+#else
+#define RAWHID_TX_BUFFER	EP_DOUBLE_BUFFER
+#define RAWHID_RX_BUFFER	EP_DOUBLE_BUFFER
+#endif
+
+static const uint8_t PROGMEM endpoint_config_table[] = {
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(RAWHID_TX_SIZE) | RAWHID_TX_BUFFER,
+	1, EP_TYPE_INTERRUPT_OUT,  EP_SIZE(RAWHID_RX_SIZE) | RAWHID_RX_BUFFER,
+	0,
+	0
+};
+
+
+/**************************************************************************
+ *
+ *  Descriptor Data
+ *
+ **************************************************************************/
+
+// Descriptors are the data that your computer reads when it auto-detects
+// this USB device (called "enumeration" in USB lingo).  The most commonly
+// changed items are editable at the top of this file.  Changing things
+// in here should only be done by those who've read chapter 9 of the USB
+// spec and relevant portions of any USB class specifications!
+
+
+static uint8_t PROGMEM device_descriptor[] = {
+	18,					// bLength
+	1,					// bDescriptorType
+	0x00, 0x02,				// bcdUSB
+	0,					// bDeviceClass
+	0,					// bDeviceSubClass
+	0,					// bDeviceProtocol
+	ENDPOINT0_SIZE,				// bMaxPacketSize0
+	LSB(VENDOR_ID), MSB(VENDOR_ID),		// idVendor
+	LSB(PRODUCT_ID), MSB(PRODUCT_ID),	// idProduct
+	0x00, 0x01,				// bcdDevice
+	1,					// iManufacturer
+	2,					// iProduct
+	0,					// iSerialNumber
+	1					// bNumConfigurations
+};
+
+static uint8_t PROGMEM rawhid_hid_report_desc[] = {
+	0x06, LSB(RAWHID_USAGE_PAGE), MSB(RAWHID_USAGE_PAGE),
+	0x0A, LSB(RAWHID_USAGE), MSB(RAWHID_USAGE),
+	0xA1, 0x01,				// Collection 0x01
+	0x75, 0x08,				// report size = 8 bits
+	0x15, 0x00,				// logical minimum = 0
+	0x26, 0xFF, 0x00,			// logical maximum = 255
+	0x95, RAWHID_TX_SIZE,			// report count
+	0x09, 0x01,				// usage
+	0x81, 0x02,				// Input (array)
+	0x95, RAWHID_RX_SIZE,			// report count
+	0x09, 0x02,				// usage
+	0x91, 0x02,				// Output (array)
+	0xC0					// end collection
+};
+
+
+#define CONFIG1_DESC_SIZE        (9+9+9+7+7)
+#define RAWHID_HID_DESC_OFFSET   (9+9)
+static uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
+	// configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
+	9, 					// bLength;
+	2,					// bDescriptorType;
+	LSB(CONFIG1_DESC_SIZE),			// wTotalLength
+	MSB(CONFIG1_DESC_SIZE),
+	1,					// bNumInterfaces
+	1,					// bConfigurationValue
+	0,					// iConfiguration
+	0xC0,					// bmAttributes
+	50,					// bMaxPower
+
+	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+	9,					// bLength
+	4,					// bDescriptorType
+	RAWHID_INTERFACE,			// bInterfaceNumber
+	0,					// bAlternateSetting
+	2,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x00,					// bInterfaceSubClass (0x01 = Boot)
+	0x00,					// bInterfaceProtocol (0x01 = Keyboard)
+	0,					// iInterface
+	// HID interface descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(rawhid_hid_report_desc),		// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	RAWHID_TX_ENDPOINT | 0x80,		// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	RAWHID_TX_SIZE, 0,			// wMaxPacketSize
+	RAWHID_TX_INTERVAL,			// bInterval
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	RAWHID_RX_ENDPOINT,			// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	RAWHID_RX_SIZE, 0,			// wMaxPacketSize
+	RAWHID_RX_INTERVAL			// bInterval
+};
+
+// If you're desperate for a little extra code memory, these strings
+// can be completely removed if iManufacturer, iProduct, iSerialNumber
+// in the device desciptor are changed to zeros.
+struct usb_string_descriptor_struct {
+	uint8_t bLength;
+	uint8_t bDescriptorType;
+	int16_t wString[];
+};
+static struct usb_string_descriptor_struct PROGMEM string0 = {
+	4,
+	3,
+	{0x0409}
+};
+static struct usb_string_descriptor_struct PROGMEM string1 = {
+	sizeof(STR_MANUFACTURER),
+	3,
+	STR_MANUFACTURER
+};
+static struct usb_string_descriptor_struct PROGMEM string2 = {
+	sizeof(STR_PRODUCT),
+	3,
+	STR_PRODUCT
+};
+
+// This table defines which descriptor data is sent for each specific
+// request from the host (in wValue and wIndex).
+static struct descriptor_list_struct {
+	uint16_t	wValue;
+	uint16_t	wIndex;
+	const uint8_t	*addr;
+	uint8_t		length;
+} PROGMEM descriptor_list[] = {
+	{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
+	{0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
+	{0x2200, RAWHID_INTERFACE, rawhid_hid_report_desc, sizeof(rawhid_hid_report_desc)},
+	{0x2100, RAWHID_INTERFACE, config1_descriptor+RAWHID_HID_DESC_OFFSET, 9},
+	{0x0300, 0x0000, (const uint8_t *)&string0, 4},
+	{0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)},
+	{0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)}
+};
+#define NUM_DESC_LIST (sizeof(descriptor_list)/sizeof(struct descriptor_list_struct))
+
+
+/**************************************************************************
+ *
+ *  Variables - these are the only non-stack RAM usage
+ *
+ **************************************************************************/
+
+// zero when we are not configured, non-zero when enumerated
+static volatile uint8_t usb_configuration=0;
+
+// these are a more reliable timeout than polling the
+// frame counter (UDFNUML)
+static volatile uint8_t rx_timeout_count=0;
+static volatile uint8_t tx_timeout_count=0;
+
+
+
+/**************************************************************************
+ *
+ *  Public Functions - these are the API intended for the user
+ *
+ **************************************************************************/
+
+
+// initialize USB
+void usb_init(void)
+{
+	HW_CONFIG();
+	USB_FREEZE();				// enable USB
+	PLL_CONFIG();				// config PLL
+        while (!(PLLCSR & (1<<PLOCK))) ;	// wait for PLL lock
+        USB_CONFIG();				// start USB clock
+        UDCON = 0;				// enable attach resistor
+	usb_configuration = 0;
+        UDIEN = (1<<EORSTE)|(1<<SOFE);
+	sei();
+}
+
+// return 0 if the USB is not configured, or the configuration
+// number selected by the HOST
+uint8_t usb_configured(void)
+{
+	return usb_configuration;
+}
+
+
+// receive a packet, with timeout
+int8_t usb_rawhid_recv(uint8_t *buffer, uint8_t timeout)
+{
+	uint8_t intr_state;
+
+	// if we're not online (enumerated and configured), error
+	if (!usb_configuration) return -1;
+	intr_state = SREG;
+	cli();
+	rx_timeout_count = timeout;
+	UENUM = RAWHID_RX_ENDPOINT;
+	// wait for data to be available in the FIFO
+	while (1) {
+		if (UEINTX & (1<<RWAL)) break;
+		SREG = intr_state;
+		if (rx_timeout_count == 0) return 0;
+		if (!usb_configuration) return -1;
+		intr_state = SREG;
+		cli();
+		UENUM = RAWHID_RX_ENDPOINT;
+	}
+	// read bytes from the FIFO
+	#if (RAWHID_RX_SIZE >= 64)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 63)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 62)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 61)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 60)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 59)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 58)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 57)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 56)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 55)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 54)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 53)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 52)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 51)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 50)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 49)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 48)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 47)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 46)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 45)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 44)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 43)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 42)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 41)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 40)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 39)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 38)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 37)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 36)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 35)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 34)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 33)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 32)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 31)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 30)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 29)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 28)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 27)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 26)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 25)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 24)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 23)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 22)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 21)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 20)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 19)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 18)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 17)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 16)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 15)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 14)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 13)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 12)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 11)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 10)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 9)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 8)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 7)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 6)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 5)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 4)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 3)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 2)
+	*buffer++ = UEDATX;
+	#endif
+	#if (RAWHID_RX_SIZE >= 1)
+	*buffer++ = UEDATX;
+	#endif
+	// release the buffer
+	UEINTX = 0x6B;
+	SREG = intr_state;
+	return RAWHID_RX_SIZE;
+}
+
+// send a packet, with timeout
+int8_t usb_rawhid_send(const uint8_t *buffer, uint8_t timeout)
+{
+	uint8_t intr_state;
+
+	// if we're not online (enumerated and configured), error
+	if (!usb_configuration) return -1;
+	intr_state = SREG;
+	cli();
+	tx_timeout_count = timeout;
+	UENUM = RAWHID_TX_ENDPOINT;
+	// wait for the FIFO to be ready to accept data
+	while (1) {
+		if (UEINTX & (1<<RWAL)) break;
+		SREG = intr_state;
+		if (tx_timeout_count == 0) return 0;
+		if (!usb_configuration) return -1;
+		intr_state = SREG;
+		cli();
+		UENUM = RAWHID_TX_ENDPOINT;
+	}
+	// write bytes from the FIFO
+	#if (RAWHID_TX_SIZE >= 64)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 63)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 62)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 61)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 60)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 59)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 58)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 57)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 56)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 55)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 54)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 53)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 52)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 51)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 50)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 49)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 48)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 47)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 46)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 45)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 44)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 43)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 42)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 41)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 40)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 39)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 38)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 37)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 36)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 35)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 34)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 33)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 32)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 31)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 30)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 29)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 28)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 27)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 26)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 25)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 24)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 23)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 22)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 21)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 20)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 19)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 18)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 17)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 16)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 15)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 14)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 13)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 12)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 11)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 10)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 9)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 8)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 7)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 6)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 5)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 4)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 3)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 2)
+	UEDATX = *buffer++;
+	#endif
+	#if (RAWHID_TX_SIZE >= 1)
+	UEDATX = *buffer++;
+	#endif
+	// transmit it now
+	UEINTX = 0x3A;
+	SREG = intr_state;
+	return RAWHID_TX_SIZE;
+}
+
+
+
+
+/**************************************************************************
+ *
+ *  Private Functions - not intended for general user consumption....
+ *
+ **************************************************************************/
+
+
+#if (GCC_VERSION >= 40300) && (GCC_VERSION < 40302)
+#error "Buggy GCC 4.3.0 compiler, please upgrade!"
+#endif
+
+
+// USB Device Interrupt - handle all device-level events
+// the transmit buffer flushing is triggered by the start of frame
+//
+ISR(USB_GEN_vect)
+{
+	uint8_t intbits, t;
+
+        intbits = UDINT;
+        UDINT = 0;
+        if (intbits & (1<<EORSTI)) {
+		UENUM = 0;
+		UECONX = 1;
+		UECFG0X = EP_TYPE_CONTROL;
+		UECFG1X = EP_SIZE(ENDPOINT0_SIZE) | EP_SINGLE_BUFFER;
+		UEIENX = (1<<RXSTPE);
+		usb_configuration = 0;
+        }
+	if ((intbits & (1<<SOFI)) && usb_configuration) {
+		t = rx_timeout_count;
+		if (t) rx_timeout_count = --t;
+		t = tx_timeout_count;
+		if (t) tx_timeout_count = --t;
+	}
+}
+
+
+
+// Misc functions to wait for ready and send/receive packets
+static inline void usb_wait_in_ready(void)
+{
+	while (!(UEINTX & (1<<TXINI))) ;
+}
+static inline void usb_send_in(void)
+{
+	UEINTX = ~(1<<TXINI);
+}
+static inline void usb_wait_receive_out(void)
+{
+	while (!(UEINTX & (1<<RXOUTI))) ;
+}
+static inline void usb_ack_out(void)
+{
+	UEINTX = ~(1<<RXOUTI);
+}
+
+
+
+// USB Endpoint Interrupt - endpoint 0 is handled here.  The
+// other endpoints are manipulated by the user-callable
+// functions, and the start-of-frame interrupt.
+//
+ISR(USB_COM_vect)
+{
+        uint8_t intbits;
+	const uint8_t *list;
+        const uint8_t *cfg;
+	uint8_t i, n, len, en;
+	uint8_t bmRequestType;
+	uint8_t bRequest;
+	uint16_t wValue;
+	uint16_t wIndex;
+	uint16_t wLength;
+	uint16_t desc_val;
+	const uint8_t *desc_addr;
+	uint8_t	desc_length;
+
+        UENUM = 0;
+	intbits = UEINTX;
+        if (intbits & (1<<RXSTPI)) {
+                bmRequestType = UEDATX;
+                bRequest = UEDATX;
+                wValue = UEDATX;
+                wValue |= (UEDATX << 8);
+                wIndex = UEDATX;
+                wIndex |= (UEDATX << 8);
+                wLength = UEDATX;
+                wLength |= (UEDATX << 8);
+                UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
+                if (bRequest == GET_DESCRIPTOR) {
+			list = (const uint8_t *)descriptor_list;
+			for (i=0; ; i++) {
+				if (i >= NUM_DESC_LIST) {
+					UECONX = (1<<STALLRQ)|(1<<EPEN);  //stall
+					return;
+				}
+				desc_val = pgm_read_word(list);
+				if (desc_val != wValue) {
+					list += sizeof(struct descriptor_list_struct);
+					continue;
+				}
+				list += 2;
+				desc_val = pgm_read_word(list);
+				if (desc_val != wIndex) {
+					list += sizeof(struct descriptor_list_struct)-2;
+					continue;
+				}
+				list += 2;
+				desc_addr = (const uint8_t *)pgm_read_word(list);
+				list += 2;
+				desc_length = pgm_read_byte(list);
+				break;
+			}
+			len = (wLength < 256) ? wLength : 255;
+			if (len > desc_length) len = desc_length;
+			do {
+				// wait for host ready for IN packet
+				do {
+					i = UEINTX;
+				} while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+				if (i & (1<<RXOUTI)) return;	// abort
+				// send IN packet
+				n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+				for (i = n; i; i--) {
+					UEDATX = pgm_read_byte(desc_addr++);
+				}
+				len -= n;
+				usb_send_in();
+			} while (len || n == ENDPOINT0_SIZE);
+			return;
+                }
+		if (bRequest == SET_ADDRESS) {
+			usb_send_in();
+			usb_wait_in_ready();
+			UDADDR = wValue | (1<<ADDEN);
+			return;
+		}
+		if (bRequest == SET_CONFIGURATION && bmRequestType == 0) {
+			usb_configuration = wValue;
+			usb_send_in();
+			cfg = endpoint_config_table;
+			for (i=1; i<5; i++) {
+				UENUM = i;
+				en = pgm_read_byte(cfg++);
+				UECONX = en;
+				if (en) {
+					UECFG0X = pgm_read_byte(cfg++);
+					UECFG1X = pgm_read_byte(cfg++);
+				}
+			}
+        		UERST = 0x1E;
+        		UERST = 0;
+			return;
+		}
+		if (bRequest == GET_CONFIGURATION && bmRequestType == 0x80) {
+			usb_wait_in_ready();
+			UEDATX = usb_configuration;
+			usb_send_in();
+			return;
+		}
+
+		if (bRequest == GET_STATUS) {
+			usb_wait_in_ready();
+			i = 0;
+			if (bmRequestType == 0x82) {
+				UENUM = wIndex;
+				if (UECONX & (1<<STALLRQ)) i = 1;
+				UENUM = 0;
+			}
+			UEDATX = i;
+			UEDATX = 0;
+			usb_send_in();
+			return;
+		}
+		if ((bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE)
+		  && bmRequestType == 0x02 && wValue == 0) {
+			i = wIndex & 0x7F;
+			if (i >= 1 && i <= MAX_ENDPOINT) {
+				usb_send_in();
+				UENUM = i;
+				if (bRequest == SET_FEATURE) {
+					UECONX = (1<<STALLRQ)|(1<<EPEN);
+				} else {
+					UECONX = (1<<STALLRQC)|(1<<RSTDT)|(1<<EPEN);
+					UERST = (1 << i);
+					UERST = 0;
+				}
+				return;
+			}
+		}
+		if (wIndex == RAWHID_INTERFACE) {
+			if (bmRequestType == 0xA1 && bRequest == HID_GET_REPORT) {
+				len = RAWHID_TX_SIZE;
+				do {
+					// wait for host ready for IN packet
+					do {
+						i = UEINTX;
+					} while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+					if (i & (1<<RXOUTI)) return;	// abort
+					// send IN packet
+					n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+					for (i = n; i; i--) {
+						// just send zeros
+						UEDATX = 0;
+					}
+					len -= n;
+					usb_send_in();
+				} while (len || n == ENDPOINT0_SIZE);
+				return;
+			}
+			if (bmRequestType == 0x21 && bRequest == HID_SET_REPORT) {
+				len = RAWHID_RX_SIZE;
+				do {
+					n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+					usb_wait_receive_out();
+					// ignore incoming bytes
+					usb_ack_out();
+					len -= n;
+				} while (len);
+				usb_wait_in_ready();
+				usb_send_in();
+				return;
+			}
+		}
+	}
+	UECONX = (1<<STALLRQ) | (1<<EPEN);	// stall
+}
+
+
diff --git a/software/hhd70dongle/usb_rawhid.h b/software/hhd70dongle/usb_rawhid.h
new file mode 100644
index 0000000..65bc4de
--- /dev/null
+++ b/software/hhd70dongle/usb_rawhid.h
@@ -0,0 +1,85 @@
+#ifndef usb_serial_h__
+#define usb_serial_h__
+
+#include <stdint.h>
+
+void usb_init(void);			// initialize everything
+uint8_t usb_configured(void);		// is the USB port configured
+int8_t usb_rawhid_recv(uint8_t *buffer, uint8_t timeout);  // receive a packet, with timeout
+int8_t usb_rawhid_send(const uint8_t *buffer, uint8_t timeout); // send a packet, with timeout
+
+// This file does not include the HID debug functions, so these empty
+// macros replace them with nothing, so users can compile code that
+// has calls to these functions.
+#define usb_debug_putchar(c)
+#define usb_debug_flush_output()
+
+
+// Everything below this point is only intended for usb_serial.c
+#ifdef USB_PRIVATE_INCLUDE
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+
+#define EP_TYPE_CONTROL			0x00
+#define EP_TYPE_BULK_IN			0x81
+#define EP_TYPE_BULK_OUT		0x80
+#define EP_TYPE_INTERRUPT_IN		0xC1
+#define EP_TYPE_INTERRUPT_OUT		0xC0
+#define EP_TYPE_ISOCHRONOUS_IN		0x41
+#define EP_TYPE_ISOCHRONOUS_OUT		0x40
+
+#define EP_SINGLE_BUFFER		0x02
+#define EP_DOUBLE_BUFFER		0x06
+
+#define EP_SIZE(s)	((s) > 32 ? 0x30 :	\
+			((s) > 16 ? 0x20 :	\
+			((s) > 8  ? 0x10 :	\
+			            0x00)))
+
+#define MAX_ENDPOINT		4
+
+#define LSB(n) (n & 255)
+#define MSB(n) ((n >> 8) & 255)
+
+#if defined(__AVR_AT90USB162__)
+#define HW_CONFIG() 
+#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0)))
+#define USB_CONFIG() (USBCON = (1<<USBE))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_ATmega32U4__)
+#define HW_CONFIG() (UHWCON = 0x01)
+#define PLL_CONFIG() (PLLCSR = 0x12)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_AT90USB646__)
+#define HW_CONFIG() (UHWCON = 0x81)
+#define PLL_CONFIG() (PLLCSR = 0x1A)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_AT90USB1286__)
+#define HW_CONFIG() (UHWCON = 0x81)
+#define PLL_CONFIG() (PLLCSR = 0x16)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#endif
+
+// standard control endpoint request types
+#define GET_STATUS			0
+#define CLEAR_FEATURE			1
+#define SET_FEATURE			3
+#define SET_ADDRESS			5
+#define GET_DESCRIPTOR			6
+#define GET_CONFIGURATION		8
+#define SET_CONFIGURATION		9
+#define GET_INTERFACE			10
+#define SET_INTERFACE			11
+// HID (human interface device)
+#define HID_GET_REPORT			1
+#define HID_GET_IDLE			2
+#define HID_GET_PROTOCOL		3
+#define HID_SET_REPORT			9
+#define HID_SET_IDLE			10
+#define HID_SET_PROTOCOL		11
+#endif
+#endif