X-Git-Url: https://git.realraum.at/?p=svn42.git;a=blobdiff_plain;f=rf433rcv%2Fteensy%2Fusb_rawhid.c;fp=rf433rcv%2Fteensy%2Fusb_rawhid.c;h=dae1214c238ec59fe6ea152172c3f9da0a4c6689;hp=0000000000000000000000000000000000000000;hb=deb2b278d460a716e0e2d8be370b1ee8f8963e34;hpb=1c4aea8ca6197b857498de2881b8bc594af1df49

diff --git a/rf433rcv/teensy/usb_rawhid.c b/rf433rcv/teensy/usb_rawhid.c
new file mode 100644
index 0000000..dae1214
--- /dev/null
+++ b/rf433rcv/teensy/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"MfgName"
+#define STR_PRODUCT		L"Teensy Raw HID Example"
+
+// 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		0x0480
+#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
+}
+
+