From 0f1d82f1f23a09b27cd144a253919050b39d68c4 Mon Sep 17 00:00:00 2001
From: Stefan Dorn <mail@muflax.com>
Date: Sat, 11 Jun 2016 23:06:09 +0100
Subject: [PATCH] refactor

---
 src/keyboard/controller.c                     | 682 +++++++++++++++++
 src/keyboard/controller.h                     |  81 +-
 src/lib-other/pjrc/readme.md                  |  19 -
 .../pjrc/usb_keyboard/usb_keyboard.c          | 705 ------------------
 .../pjrc/usb_keyboard/usb_keyboard.h          | 127 ----
 src/lib/keyboard.h                            |  35 +
 src/lib/keyfunctions.h                        |   1 -
 src/main.h                                    |   1 -
 8 files changed, 794 insertions(+), 857 deletions(-)
 delete mode 100644 src/lib-other/pjrc/readme.md
 delete mode 100644 src/lib-other/pjrc/usb_keyboard/usb_keyboard.c
 delete mode 100644 src/lib-other/pjrc/usb_keyboard/usb_keyboard.h

diff --git a/src/keyboard/controller.c b/src/keyboard/controller.c
index b97b112..ca37930 100644
--- a/src/keyboard/controller.c
+++ b/src/keyboard/controller.c
@@ -496,3 +496,685 @@ uint8_t twi_read(uint8_t * data) {
 		return TW_STATUS;  // error
 	return 0;  // success
 }
+
+// ----------------------------------------------
+// usb
+// ----------------------------------------------
+
+/**************************************************************************
+ *
+ *  Configurable Options
+ *
+ **************************************************************************/
+
+// You can change these to give your code its own name.
+#define STR_MANUFACTURER	L"FalbabeTech"
+#define STR_PRODUCT     	L"ErgoDox ergonomic keyboard"
+
+
+// Mac OS-X and Linux automatically load the correct drivers.  On
+// Windows, even though the driver is supplied by Microsoft, an
+// INF file is needed to load the driver.  These numbers need to
+// match the INF file.
+#define VENDOR_ID 	0x1d50  // Openmoko, Inc.
+#define PRODUCT_ID	0x6028  // ErgoDox ergonomic keyboard
+
+
+// USB devices are supposed to implment a halt feature, which is
+// rarely (if ever) used.  If you comment this line out, the halt
+// code will be removed, saving 102 bytes of space (gcc 4.3.0).
+// This is not strictly USB compliant, but works with all major
+// operating systems.
+#define SUPPORT_ENDPOINT_HALT
+
+/* report id */
+#define REPORT_ID_SYSTEM    2
+#define REPORT_ID_CONSUMER  3
+
+/**************************************************************************
+ *
+ *  Endpoint Buffer Configuration
+ *
+ **************************************************************************/
+#define ENDPOINT0_SIZE		32
+
+#define KEYBOARD_INTERFACE	0
+#define KEYBOARD_ENDPOINT	1
+#define KEYBOARD_SIZE		8
+#define KEYBOARD_BUFFER		EP_DOUBLE_BUFFER
+
+#define EXTRA_INTERFACE		1
+#define EXTRA_ENDPOINT		2
+#define EXTRA_SIZE		8
+#define EXTRA_BUFFER		EP_DOUBLE_BUFFER
+
+
+static const uint8_t PROGMEM endpoint_config_table[] = {
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(KEYBOARD_SIZE) | KEYBOARD_BUFFER,
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(EXTRA_SIZE)    | EXTRA_BUFFER,    // 4
+	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 const 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
+};
+
+// Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
+static const uint8_t PROGMEM keyboard_hid_report_desc[] = {
+        0x05, 0x01,          // Usage Page (Generic Desktop),
+        0x09, 0x06,          // Usage (Keyboard),
+        0xA1, 0x01,          // Collection (Application),
+        0x75, 0x01,          //   Report Size (1),
+        0x95, 0x08,          //   Report Count (8),
+        0x05, 0x07,          //   Usage Page (Key Codes),
+        0x19, 0xE0,          //   Usage Minimum (224),
+        0x29, 0xE7,          //   Usage Maximum (231),
+        0x15, 0x00,          //   Logical Minimum (0),
+        0x25, 0x01,          //   Logical Maximum (1),
+        0x81, 0x02,          //   Input (Data, Variable, Absolute), ;Modifier byte
+        0x95, 0x01,          //   Report Count (1),
+        0x75, 0x08,          //   Report Size (8),
+        0x81, 0x03,          //   Input (Constant),                 ;Reserved byte
+        0x95, 0x05,          //   Report Count (5),
+        0x75, 0x01,          //   Report Size (1),
+        0x05, 0x08,          //   Usage Page (LEDs),
+        0x19, 0x01,          //   Usage Minimum (1),
+        0x29, 0x05,          //   Usage Maximum (5),
+        0x91, 0x02,          //   Output (Data, Variable, Absolute), ;LED report
+        0x95, 0x01,          //   Report Count (1),
+        0x75, 0x03,          //   Report Size (3),
+        0x91, 0x03,          //   Output (Constant),                 ;LED report padding
+        0x95, 0x06,          //   Report Count (6),
+        0x75, 0x08,          //   Report Size (8),
+        0x15, 0x00,          //   Logical Minimum (0),
+        0x25, 0xFF,          //   Logical Maximum(104),
+        0x05, 0x07,          //   Usage Page (Key Codes),
+        0x19, 0x00,          //   Usage Minimum (0),
+        0x29, 0xFF,          //   Usage Maximum (104),
+        0x81, 0x00,          //   Input (Data, Array),
+        0xc0                 // End Collection
+};
+
+// audio controls & system controls
+// http://www.microsoft.com/whdc/archive/w2kbd.mspx
+static const uint8_t PROGMEM extra_hid_report_desc[] = {
+    /* consumer */
+    0x05, 0x0c,                    // USAGE_PAGE (Consumer Devices)
+    0x09, 0x01,                    // USAGE (Consumer Control)
+    0xa1, 0x01,                    // COLLECTION (Application)
+    0x85, REPORT_ID_CONSUMER,      //   REPORT_ID (3)
+    0x15, 0x01,                    //   LOGICAL_MINIMUM (0x1)
+    0x26, 0x9c, 0x02,              //   LOGICAL_MAXIMUM (0x29c)
+    0x19, 0x01,                    //   USAGE_MINIMUM (0x1)
+    0x2a, 0x9c, 0x02,              //   USAGE_MAXIMUM (0x29c)
+    0x75, 0x10,                    //   REPORT_SIZE (16)
+    0x95, 0x01,                    //   REPORT_COUNT (1)
+    0x81, 0x00,                    //   INPUT (Data,Array,Abs)
+    0xc0,                          // END_COLLECTION
+};
+
+#define KEYBOARD_HID_DESC_NUM                0
+#define KEYBOARD_HID_DESC_OFFSET             (9+(9+9+7)*KEYBOARD_HID_DESC_NUM+9)
+
+#   define EXTRA_HID_DESC_NUM           (KEYBOARD_HID_DESC_NUM + 1)
+#   define EXTRA_HID_DESC_OFFSET        (9+(9+9+7)*EXTRA_HID_DESC_NUM+9)
+
+#define NUM_INTERFACES                  (EXTRA_HID_DESC_NUM + 1)
+#define CONFIG1_DESC_SIZE               (9+(9+9+7)*NUM_INTERFACES)
+//#define KEYBOARD_HID_DESC_OFFSET (9+9)
+static const 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),
+	NUM_INTERFACES,					// 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
+	KEYBOARD_INTERFACE,			// bInterfaceNumber
+	0,					// bAlternateSetting
+	1,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x01,					// bInterfaceSubClass (0x01 = Boot)
+	0x01,					// bInterfaceProtocol (0x01 = Keyboard)
+	0,					// iInterface
+
+		// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(keyboard_hid_report_desc),     	// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	KEYBOARD_ENDPOINT | 0x80,			// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	KEYBOARD_SIZE, 0,				// wMaxPacketSize
+	10,					// bInterval
+
+	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+	9,					// bLength
+	4,					// bDescriptorType
+	EXTRA_INTERFACE,			// bInterfaceNumber
+	0,					// bAlternateSetting
+	1,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x00,					// bInterfaceSubClass
+	0x00,					// bInterfaceProtocol
+	0,					// iInterface
+	// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(extra_hid_report_desc),		// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	EXTRA_ENDPOINT | 0x80,			// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	EXTRA_SIZE, 0,				// wMaxPacketSize
+	10,					// 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 const struct usb_string_descriptor_struct PROGMEM string0 = {
+	4,
+	3,
+	{0x0409}
+};
+static const struct usb_string_descriptor_struct PROGMEM string1 = {
+	sizeof(STR_MANUFACTURER),
+	3,
+	STR_MANUFACTURER
+};
+static const 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;
+} const PROGMEM descriptor_list[] = {
+        // DEVICE descriptor
+	{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
+        // CONFIGURATION descriptor
+	{0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
+        // HID/REPORT descriptors
+	{0x2100, KEYBOARD_INTERFACE, config1_descriptor+KEYBOARD_HID_DESC_OFFSET, 9},
+	{0x2200, KEYBOARD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)},
+	    // Extra HID Descriptor
+	{0x2100, EXTRA_INTERFACE, config1_descriptor+EXTRA_HID_DESC_OFFSET, 9},
+	{0x2200, EXTRA_INTERFACE, extra_hid_report_desc, sizeof(extra_hid_report_desc)},
+        // STRING descriptors
+	{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;
+
+// which modifier keys are currently pressed
+// 1=left ctrl,    2=left shift,   4=left alt,    8=left gui
+// 16=right ctrl, 32=right shift, 64=right alt, 128=right gui
+uint8_t keyboard_modifier_keys=0;
+
+// which keys are currently pressed, up to 6 keys may be down at once
+uint8_t keyboard_keys[6]={0,0,0,0,0,0};
+
+// protocol setting from the host.  We use exactly the same report
+// either way, so this variable only stores the setting since we
+// are required to be able to report which setting is in use.
+static uint8_t keyboard_protocol=1;
+
+// the idle configuration, how often we send the report to the
+// host (ms * 4) even when it hasn't changed
+static uint8_t keyboard_idle_config=125;
+
+// count until idle timeout
+static uint8_t keyboard_idle_count=0;
+
+// 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
+volatile uint8_t keyboard_leds=0;
+
+// which consumer key is currently pressed
+uint16_t consumer_key;
+uint16_t last_consumer_key;
+
+
+/**************************************************************************
+ *
+ *  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;
+}
+
+
+// perform a single keystroke
+int8_t usb_keyboard_press(uint8_t key, uint8_t modifier)
+{
+	int8_t r;
+
+	keyboard_modifier_keys = modifier;
+	keyboard_keys[0] = key;
+	r = usb_keyboard_send();
+	if (r) return r;
+	keyboard_modifier_keys = 0;
+	keyboard_keys[0] = 0;
+	return usb_keyboard_send();
+}
+
+// send the contents of keyboard_keys and keyboard_modifier_keys
+int8_t usb_keyboard_send(void)
+{
+	uint8_t i, intr_state, timeout;
+
+	if (!usb_configuration) return -1;
+	intr_state = SREG;
+	cli();
+	UENUM = KEYBOARD_ENDPOINT;
+	timeout = UDFNUML + 50;
+	while (1) {
+		// are we ready to transmit?
+		if (UEINTX & (1<<RWAL)) break;
+		SREG = intr_state;
+		// has the USB gone offline?
+		if (!usb_configuration) return -1;
+		// have we waited too long?
+		if (UDFNUML == timeout) return -1;
+		// get ready to try checking again
+		intr_state = SREG;
+		cli();
+		UENUM = KEYBOARD_ENDPOINT;
+	}
+	UEDATX = keyboard_modifier_keys;
+	UEDATX = 0;
+	for (i=0; i<6; i++) {
+		UEDATX = keyboard_keys[i];
+	}
+	UEINTX = 0x3A;
+	keyboard_idle_count = 0;
+	SREG = intr_state;
+	return 0;
+}
+
+/**************************************************************************
+ *
+ *  Private Functions - not intended for general user consumption....
+ *
+ **************************************************************************/
+
+
+
+// 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, i;  // used to declare a variable `t` as well, but it
+			     //   wasn't used ::Ben Blazak, 2012::
+	static uint8_t div4=0;
+
+        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) {
+		if (keyboard_idle_config && (++div4 & 3) == 0) {
+			UENUM = KEYBOARD_ENDPOINT;
+			if (UEINTX & (1<<RWAL)) {
+				keyboard_idle_count++;
+				if (keyboard_idle_count == keyboard_idle_config) {
+					keyboard_idle_count = 0;
+					UEDATX = keyboard_modifier_keys;
+					UEDATX = 0;
+					for (i=0; i<6; i++) {
+						UEDATX = keyboard_keys[i];
+					}
+					UEINTX = 0x3A;
+				}
+			}
+		}
+	}
+}
+
+
+
+// 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;
+			#ifdef SUPPORT_ENDPOINT_HALT
+			if (bmRequestType == 0x82) {
+				UENUM = wIndex;
+				if (UECONX & (1<<STALLRQ)) i = 1;
+				UENUM = 0;
+			}
+			#endif
+			UEDATX = i;
+			UEDATX = 0;
+			usb_send_in();
+			return;
+		}
+		#ifdef SUPPORT_ENDPOINT_HALT
+		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;
+			}
+		}
+		#endif
+		if (wIndex == KEYBOARD_INTERFACE) {
+			if (bmRequestType == 0xA1) {
+				if (bRequest == HID_GET_REPORT) {
+					usb_wait_in_ready();
+					UEDATX = keyboard_modifier_keys;
+					UEDATX = 0;
+					for (i=0; i<6; i++) {
+						UEDATX = keyboard_keys[i];
+					}
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_GET_IDLE) {
+					usb_wait_in_ready();
+					UEDATX = keyboard_idle_config;
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_GET_PROTOCOL) {
+					usb_wait_in_ready();
+					UEDATX = keyboard_protocol;
+					usb_send_in();
+					return;
+				}
+			}
+			if (bmRequestType == 0x21) {
+				if (bRequest == HID_SET_REPORT) {
+					usb_wait_receive_out();
+					keyboard_leds = UEDATX;
+					usb_ack_out();
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_SET_IDLE) {
+					keyboard_idle_config = (wValue >> 8);
+					keyboard_idle_count = 0;
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_SET_PROTOCOL) {
+					keyboard_protocol = wValue;
+					usb_send_in();
+					return;
+				}
+			}
+		}
+	}
+	UECONX = (1<<STALLRQ) | (1<<EPEN);	// stall
+}
+
+int8_t usb_extra_send(uint8_t report_id, uint16_t data)
+{
+	uint8_t intr_state, timeout;
+
+	if (!usb_configured()) return -1;
+	intr_state = SREG;
+	cli();
+	UENUM = EXTRA_ENDPOINT;
+	timeout = UDFNUML + 50;
+	while (1) {
+		// are we ready to transmit?
+		if (UEINTX & (1<<RWAL)) break;
+		SREG = intr_state;
+		// has the USB gone offline?
+		if (!usb_configured()) return -1;
+		// have we waited too long?
+		if (UDFNUML == timeout) return -1;
+		// get ready to try checking again
+		intr_state = SREG;
+		cli();
+		UENUM = EXTRA_ENDPOINT;
+	}
+
+	UEDATX = report_id;
+        UEDATX = data&0xFF;
+        UEDATX = (data>>8)&0xFF;
+
+	UEINTX = 0x3A;
+	SREG = intr_state;
+	return 0;
+}
+
+int8_t usb_extra_consumer_send()
+{
+	int result = 0;
+	// don't resend the same key repeatedly if held, only send it once.
+	if (consumer_key != last_consumer_key) {
+		result = usb_extra_send(REPORT_ID_CONSUMER, consumer_key);
+		if (result == 0) {
+			last_consumer_key = consumer_key;
+		}
+	}
+	return result;
+}
diff --git a/src/keyboard/controller.h b/src/keyboard/controller.h
index 13b7371..a74855b 100644
--- a/src/keyboard/controller.h
+++ b/src/keyboard/controller.h
@@ -8,13 +8,15 @@
 
 #pragma once
 
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <avr/pgmspace.h>
 #include <stdbool.h>
 #include <stdint.h>
-#include <util/twi.h>
-#include "./options.h"
-#include "./matrix.h"
-#include <avr/io.h>
 #include <util/delay.h>
+#include <util/twi.h>
+#include "./matrix.h"
+#include "./options.h"
 
 // --------------------------------------------------------------------
 
@@ -84,3 +86,74 @@ uint8_t twi_start (void);
 void    twi_stop  (void);
 uint8_t twi_send  (uint8_t data);
 uint8_t twi_read  (uint8_t * data);
+
+// --------------------------------------------------------------------
+
+void usb_init(void);			// initialize everything
+uint8_t usb_configured(void);		// is the USB port configured
+
+int8_t usb_keyboard_press(uint8_t key, uint8_t modifier);
+int8_t usb_keyboard_send(void);
+extern uint8_t keyboard_modifier_keys;
+extern uint8_t keyboard_keys[6];
+extern volatile uint8_t keyboard_leds;
+
+extern uint16_t consumer_key;
+
+// 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()
+
+int8_t usb_extra_consumer_send();
+
+// Everything below this point is only intended for usb_serial.c
+
+#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) == 64 ? 0x30 :	\
+			((s) == 32 ? 0x20 :	\
+			((s) == 16 ? 0x10 :	\
+			             0x00)))
+
+#define MAX_ENDPOINT		4
+
+#define LSB(n) (n & 255)
+#define MSB(n) ((n >> 8) & 255)
+
+#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)))
+
+// 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
+// CDC (communication class device)
+#define CDC_SET_LINE_CODING		0x20
+#define CDC_GET_LINE_CODING		0x21
+#define CDC_SET_CONTROL_LINE_STATE	0x22
diff --git a/src/lib-other/pjrc/readme.md b/src/lib-other/pjrc/readme.md
deleted file mode 100644
index ec7ad28..0000000
--- a/src/lib-other/pjrc/readme.md
+++ /dev/null
@@ -1,19 +0,0 @@
-# src/lib/pjrc
-
-## links to original files
-
-* [pjrc] (http://pjrc.com/teensy/)
-    * [usb_keyboard] (http://pjrc.com/teensy/usb_keyboard.zip)
-<!--
-    * [usb_mouse] (http://pjrc.com/teensy/usb_mouse.zip)
-    * [usb_serial] (http://pjrc.com/teensy/usb_serial.zip)
-        * Directions for host setup [here]
-          (http://pjrc.com/teensy/usb_serial.html)
--->
-
--------------------------------------------------------------------------------
-
-Copyright &copy; 2012 Ben Blazak <benblazak.dev@gmail.com>  
-Released under The MIT License (MIT) (see "license.md")  
-Project located at <https://github.com/benblazak/ergodox-firmware>
-
diff --git a/src/lib-other/pjrc/usb_keyboard/usb_keyboard.c b/src/lib-other/pjrc/usb_keyboard/usb_keyboard.c
deleted file mode 100644
index 7a08897..0000000
--- a/src/lib-other/pjrc/usb_keyboard/usb_keyboard.c
+++ /dev/null
@@ -1,705 +0,0 @@
-/* USB Keyboard Example for Teensy USB Development Board
- * http://www.pjrc.com/teensy/usb_keyboard.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 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: Add support for Teensy 2.0
-
-#include "./usb_keyboard.h"
-
-/**************************************************************************
- *
- *  Configurable Options
- *
- **************************************************************************/
-
-// You can change these to give your code its own name.
-#define STR_MANUFACTURER	L"FalbabeTech"
-#define STR_PRODUCT     	L"ErgoDox ergonomic keyboard"
-
-
-// Mac OS-X and Linux automatically load the correct drivers.  On
-// Windows, even though the driver is supplied by Microsoft, an
-// INF file is needed to load the driver.  These numbers need to
-// match the INF file.
-#define VENDOR_ID 	0x1d50  // Openmoko, Inc.
-#define PRODUCT_ID	0x6028  // ErgoDox ergonomic keyboard
-
-
-// USB devices are supposed to implment a halt feature, which is
-// rarely (if ever) used.  If you comment this line out, the halt
-// code will be removed, saving 102 bytes of space (gcc 4.3.0).
-// This is not strictly USB compliant, but works with all major
-// operating systems.
-#define SUPPORT_ENDPOINT_HALT
-
-/* report id */
-#define REPORT_ID_SYSTEM    2
-#define REPORT_ID_CONSUMER  3
-
-/**************************************************************************
- *
- *  Endpoint Buffer Configuration
- *
- **************************************************************************/
-#define ENDPOINT0_SIZE		32
-
-#define KEYBOARD_INTERFACE	0
-#define KEYBOARD_ENDPOINT	1
-#define KEYBOARD_SIZE		8
-#define KEYBOARD_BUFFER		EP_DOUBLE_BUFFER
-
-#define EXTRA_INTERFACE		1
-#define EXTRA_ENDPOINT		2
-#define EXTRA_SIZE		8
-#define EXTRA_BUFFER		EP_DOUBLE_BUFFER
-
-
-static const uint8_t PROGMEM endpoint_config_table[] = {
-	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(KEYBOARD_SIZE) | KEYBOARD_BUFFER,
-	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(EXTRA_SIZE)    | EXTRA_BUFFER,    // 4
-	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 const 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
-};
-
-// Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
-static const uint8_t PROGMEM keyboard_hid_report_desc[] = {
-        0x05, 0x01,          // Usage Page (Generic Desktop),
-        0x09, 0x06,          // Usage (Keyboard),
-        0xA1, 0x01,          // Collection (Application),
-        0x75, 0x01,          //   Report Size (1),
-        0x95, 0x08,          //   Report Count (8),
-        0x05, 0x07,          //   Usage Page (Key Codes),
-        0x19, 0xE0,          //   Usage Minimum (224),
-        0x29, 0xE7,          //   Usage Maximum (231),
-        0x15, 0x00,          //   Logical Minimum (0),
-        0x25, 0x01,          //   Logical Maximum (1),
-        0x81, 0x02,          //   Input (Data, Variable, Absolute), ;Modifier byte
-        0x95, 0x01,          //   Report Count (1),
-        0x75, 0x08,          //   Report Size (8),
-        0x81, 0x03,          //   Input (Constant),                 ;Reserved byte
-        0x95, 0x05,          //   Report Count (5),
-        0x75, 0x01,          //   Report Size (1),
-        0x05, 0x08,          //   Usage Page (LEDs),
-        0x19, 0x01,          //   Usage Minimum (1),
-        0x29, 0x05,          //   Usage Maximum (5),
-        0x91, 0x02,          //   Output (Data, Variable, Absolute), ;LED report
-        0x95, 0x01,          //   Report Count (1),
-        0x75, 0x03,          //   Report Size (3),
-        0x91, 0x03,          //   Output (Constant),                 ;LED report padding
-        0x95, 0x06,          //   Report Count (6),
-        0x75, 0x08,          //   Report Size (8),
-        0x15, 0x00,          //   Logical Minimum (0),
-        0x25, 0xFF,          //   Logical Maximum(104),
-        0x05, 0x07,          //   Usage Page (Key Codes),
-        0x19, 0x00,          //   Usage Minimum (0),
-        0x29, 0xFF,          //   Usage Maximum (104),
-        0x81, 0x00,          //   Input (Data, Array),
-        0xc0                 // End Collection
-};
-
-// audio controls & system controls
-// http://www.microsoft.com/whdc/archive/w2kbd.mspx
-static const uint8_t PROGMEM extra_hid_report_desc[] = {
-    /* consumer */
-    0x05, 0x0c,                    // USAGE_PAGE (Consumer Devices)
-    0x09, 0x01,                    // USAGE (Consumer Control)
-    0xa1, 0x01,                    // COLLECTION (Application)
-    0x85, REPORT_ID_CONSUMER,      //   REPORT_ID (3)
-    0x15, 0x01,                    //   LOGICAL_MINIMUM (0x1)
-    0x26, 0x9c, 0x02,              //   LOGICAL_MAXIMUM (0x29c)
-    0x19, 0x01,                    //   USAGE_MINIMUM (0x1)
-    0x2a, 0x9c, 0x02,              //   USAGE_MAXIMUM (0x29c)
-    0x75, 0x10,                    //   REPORT_SIZE (16)
-    0x95, 0x01,                    //   REPORT_COUNT (1)
-    0x81, 0x00,                    //   INPUT (Data,Array,Abs)
-    0xc0,                          // END_COLLECTION
-};
-
-#define KEYBOARD_HID_DESC_NUM                0
-#define KEYBOARD_HID_DESC_OFFSET             (9+(9+9+7)*KEYBOARD_HID_DESC_NUM+9)
-
-#   define EXTRA_HID_DESC_NUM           (KEYBOARD_HID_DESC_NUM + 1)
-#   define EXTRA_HID_DESC_OFFSET        (9+(9+9+7)*EXTRA_HID_DESC_NUM+9)
-
-#define NUM_INTERFACES                  (EXTRA_HID_DESC_NUM + 1)
-#define CONFIG1_DESC_SIZE               (9+(9+9+7)*NUM_INTERFACES)
-//#define KEYBOARD_HID_DESC_OFFSET (9+9)
-static const 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),
-	NUM_INTERFACES,					// 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
-	KEYBOARD_INTERFACE,			// bInterfaceNumber
-	0,					// bAlternateSetting
-	1,					// bNumEndpoints
-	0x03,					// bInterfaceClass (0x03 = HID)
-	0x01,					// bInterfaceSubClass (0x01 = Boot)
-	0x01,					// bInterfaceProtocol (0x01 = Keyboard)
-	0,					// iInterface
-
-		// HID descriptor, HID 1.11 spec, section 6.2.1
-	9,					// bLength
-	0x21,					// bDescriptorType
-	0x11, 0x01,				// bcdHID
-	0,					// bCountryCode
-	1,					// bNumDescriptors
-	0x22,					// bDescriptorType
-	sizeof(keyboard_hid_report_desc),     	// wDescriptorLength
-	0,
-	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
-	7,					// bLength
-	5,					// bDescriptorType
-	KEYBOARD_ENDPOINT | 0x80,			// bEndpointAddress
-	0x03,					// bmAttributes (0x03=intr)
-	KEYBOARD_SIZE, 0,				// wMaxPacketSize
-	10,					// bInterval
-
-	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
-	9,					// bLength
-	4,					// bDescriptorType
-	EXTRA_INTERFACE,			// bInterfaceNumber
-	0,					// bAlternateSetting
-	1,					// bNumEndpoints
-	0x03,					// bInterfaceClass (0x03 = HID)
-	0x00,					// bInterfaceSubClass
-	0x00,					// bInterfaceProtocol
-	0,					// iInterface
-	// HID descriptor, HID 1.11 spec, section 6.2.1
-	9,					// bLength
-	0x21,					// bDescriptorType
-	0x11, 0x01,				// bcdHID
-	0,					// bCountryCode
-	1,					// bNumDescriptors
-	0x22,					// bDescriptorType
-	sizeof(extra_hid_report_desc),		// wDescriptorLength
-	0,
-	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
-	7,					// bLength
-	5,					// bDescriptorType
-	EXTRA_ENDPOINT | 0x80,			// bEndpointAddress
-	0x03,					// bmAttributes (0x03=intr)
-	EXTRA_SIZE, 0,				// wMaxPacketSize
-	10,					// 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 const struct usb_string_descriptor_struct PROGMEM string0 = {
-	4,
-	3,
-	{0x0409}
-};
-static const struct usb_string_descriptor_struct PROGMEM string1 = {
-	sizeof(STR_MANUFACTURER),
-	3,
-	STR_MANUFACTURER
-};
-static const 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;
-} const PROGMEM descriptor_list[] = {
-        // DEVICE descriptor
-	{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
-        // CONFIGURATION descriptor
-	{0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
-        // HID/REPORT descriptors
-	{0x2100, KEYBOARD_INTERFACE, config1_descriptor+KEYBOARD_HID_DESC_OFFSET, 9},
-	{0x2200, KEYBOARD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)},
-	    // Extra HID Descriptor
-	{0x2100, EXTRA_INTERFACE, config1_descriptor+EXTRA_HID_DESC_OFFSET, 9},
-	{0x2200, EXTRA_INTERFACE, extra_hid_report_desc, sizeof(extra_hid_report_desc)},
-        // STRING descriptors
-	{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;
-
-// which modifier keys are currently pressed
-// 1=left ctrl,    2=left shift,   4=left alt,    8=left gui
-// 16=right ctrl, 32=right shift, 64=right alt, 128=right gui
-uint8_t keyboard_modifier_keys=0;
-
-// which keys are currently pressed, up to 6 keys may be down at once
-uint8_t keyboard_keys[6]={0,0,0,0,0,0};
-
-// protocol setting from the host.  We use exactly the same report
-// either way, so this variable only stores the setting since we
-// are required to be able to report which setting is in use.
-static uint8_t keyboard_protocol=1;
-
-// the idle configuration, how often we send the report to the
-// host (ms * 4) even when it hasn't changed
-static uint8_t keyboard_idle_config=125;
-
-// count until idle timeout
-static uint8_t keyboard_idle_count=0;
-
-// 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
-volatile uint8_t keyboard_leds=0;
-
-// which consumer key is currently pressed
-uint16_t consumer_key;
-uint16_t last_consumer_key;
-
-
-/**************************************************************************
- *
- *  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;
-}
-
-
-// perform a single keystroke
-int8_t usb_keyboard_press(uint8_t key, uint8_t modifier)
-{
-	int8_t r;
-
-	keyboard_modifier_keys = modifier;
-	keyboard_keys[0] = key;
-	r = usb_keyboard_send();
-	if (r) return r;
-	keyboard_modifier_keys = 0;
-	keyboard_keys[0] = 0;
-	return usb_keyboard_send();
-}
-
-// send the contents of keyboard_keys and keyboard_modifier_keys
-int8_t usb_keyboard_send(void)
-{
-	uint8_t i, intr_state, timeout;
-
-	if (!usb_configuration) return -1;
-	intr_state = SREG;
-	cli();
-	UENUM = KEYBOARD_ENDPOINT;
-	timeout = UDFNUML + 50;
-	while (1) {
-		// are we ready to transmit?
-		if (UEINTX & (1<<RWAL)) break;
-		SREG = intr_state;
-		// has the USB gone offline?
-		if (!usb_configuration) return -1;
-		// have we waited too long?
-		if (UDFNUML == timeout) return -1;
-		// get ready to try checking again
-		intr_state = SREG;
-		cli();
-		UENUM = KEYBOARD_ENDPOINT;
-	}
-	UEDATX = keyboard_modifier_keys;
-	UEDATX = 0;
-	for (i=0; i<6; i++) {
-		UEDATX = keyboard_keys[i];
-	}
-	UEINTX = 0x3A;
-	keyboard_idle_count = 0;
-	SREG = intr_state;
-	return 0;
-}
-
-/**************************************************************************
- *
- *  Private Functions - not intended for general user consumption....
- *
- **************************************************************************/
-
-
-
-// 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, i;  // used to declare a variable `t` as well, but it
-			     //   wasn't used ::Ben Blazak, 2012::
-	static uint8_t div4=0;
-
-        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) {
-		if (keyboard_idle_config && (++div4 & 3) == 0) {
-			UENUM = KEYBOARD_ENDPOINT;
-			if (UEINTX & (1<<RWAL)) {
-				keyboard_idle_count++;
-				if (keyboard_idle_count == keyboard_idle_config) {
-					keyboard_idle_count = 0;
-					UEDATX = keyboard_modifier_keys;
-					UEDATX = 0;
-					for (i=0; i<6; i++) {
-						UEDATX = keyboard_keys[i];
-					}
-					UEINTX = 0x3A;
-				}
-			}
-		}
-	}
-}
-
-
-
-// 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;
-			#ifdef SUPPORT_ENDPOINT_HALT
-			if (bmRequestType == 0x82) {
-				UENUM = wIndex;
-				if (UECONX & (1<<STALLRQ)) i = 1;
-				UENUM = 0;
-			}
-			#endif
-			UEDATX = i;
-			UEDATX = 0;
-			usb_send_in();
-			return;
-		}
-		#ifdef SUPPORT_ENDPOINT_HALT
-		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;
-			}
-		}
-		#endif
-		if (wIndex == KEYBOARD_INTERFACE) {
-			if (bmRequestType == 0xA1) {
-				if (bRequest == HID_GET_REPORT) {
-					usb_wait_in_ready();
-					UEDATX = keyboard_modifier_keys;
-					UEDATX = 0;
-					for (i=0; i<6; i++) {
-						UEDATX = keyboard_keys[i];
-					}
-					usb_send_in();
-					return;
-				}
-				if (bRequest == HID_GET_IDLE) {
-					usb_wait_in_ready();
-					UEDATX = keyboard_idle_config;
-					usb_send_in();
-					return;
-				}
-				if (bRequest == HID_GET_PROTOCOL) {
-					usb_wait_in_ready();
-					UEDATX = keyboard_protocol;
-					usb_send_in();
-					return;
-				}
-			}
-			if (bmRequestType == 0x21) {
-				if (bRequest == HID_SET_REPORT) {
-					usb_wait_receive_out();
-					keyboard_leds = UEDATX;
-					usb_ack_out();
-					usb_send_in();
-					return;
-				}
-				if (bRequest == HID_SET_IDLE) {
-					keyboard_idle_config = (wValue >> 8);
-					keyboard_idle_count = 0;
-					usb_send_in();
-					return;
-				}
-				if (bRequest == HID_SET_PROTOCOL) {
-					keyboard_protocol = wValue;
-					usb_send_in();
-					return;
-				}
-			}
-		}
-	}
-	UECONX = (1<<STALLRQ) | (1<<EPEN);	// stall
-}
-
-int8_t usb_extra_send(uint8_t report_id, uint16_t data)
-{
-	uint8_t intr_state, timeout;
-
-	if (!usb_configured()) return -1;
-	intr_state = SREG;
-	cli();
-	UENUM = EXTRA_ENDPOINT;
-	timeout = UDFNUML + 50;
-	while (1) {
-		// are we ready to transmit?
-		if (UEINTX & (1<<RWAL)) break;
-		SREG = intr_state;
-		// has the USB gone offline?
-		if (!usb_configured()) return -1;
-		// have we waited too long?
-		if (UDFNUML == timeout) return -1;
-		// get ready to try checking again
-		intr_state = SREG;
-		cli();
-		UENUM = EXTRA_ENDPOINT;
-	}
-
-	UEDATX = report_id;
-        UEDATX = data&0xFF;
-        UEDATX = (data>>8)&0xFF;
-
-	UEINTX = 0x3A;
-	SREG = intr_state;
-	return 0;
-}
-
-int8_t usb_extra_consumer_send()
-{
-	int result = 0;
-	// don't resend the same key repeatedly if held, only send it once.
-	if (consumer_key != last_consumer_key) {
-		result = usb_extra_send(REPORT_ID_CONSUMER, consumer_key);
-		if (result == 0) {
-			last_consumer_key = consumer_key;
-		}
-	}
-	return result;
-}
diff --git a/src/lib-other/pjrc/usb_keyboard/usb_keyboard.h b/src/lib-other/pjrc/usb_keyboard/usb_keyboard.h
deleted file mode 100644
index 923a5f0..0000000
--- a/src/lib-other/pjrc/usb_keyboard/usb_keyboard.h
+++ /dev/null
@@ -1,127 +0,0 @@
-#pragma once
-
-#include <avr/io.h>
-#include <avr/pgmspace.h>
-#include <avr/interrupt.h>
-#include <stdint.h>
-
-void usb_init(void);			// initialize everything
-uint8_t usb_configured(void);		// is the USB port configured
-
-int8_t usb_keyboard_press(uint8_t key, uint8_t modifier);
-int8_t usb_keyboard_send(void);
-extern uint8_t keyboard_modifier_keys;
-extern uint8_t keyboard_keys[6];
-extern volatile uint8_t keyboard_leds;
-
-extern uint16_t consumer_key;
-
-// 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()
-
-int8_t usb_extra_consumer_send();
-
-/* Consumer Page(0x0C)
- * following are supported by Windows: http://msdn.microsoft.com/en-us/windows/hardware/gg463372.aspx
- */
-#define AUDIO_MUTE              0x00E2
-#define AUDIO_VOL_UP            0x00E9
-#define AUDIO_VOL_DOWN          0x00EA
-#define TRANSPORT_NEXT_TRACK    0x00B5
-#define TRANSPORT_PREV_TRACK    0x00B6
-#define TRANSPORT_STOP          0x00B7
-#define TRANSPORT_PLAY_PAUSE    0x00CD
-/* application launch */
-#define AL_CC_CONFIG            0x0183
-#define AL_EMAIL                0x018A
-#define AL_CALCULATOR           0x0192
-#define AL_LOCAL_BROWSER        0x0194
-/* application control */
-#define AC_SEARCH               0x0221
-#define AC_HOME                 0x0223
-#define AC_BACK                 0x0224
-#define AC_FORWARD              0x0225
-#define AC_STOP                 0x0226
-#define AC_REFRESH              0x0227
-#define AC_BOOKMARKS            0x022A
-/* supplement for Bluegiga iWRAP HID(not supported by Windows?) */
-#define AL_LOCK                 0x019E
-#define TRANSPORT_RECORD        0x00B2
-#define TRANSPORT_REWIND        0x00B4
-#define TRANSPORT_EJECT         0x00B8
-#define AC_MINIMIZE             0x0206
-
-/* Generic Desktop Page(0x01) - system power control */
-#define SYSTEM_POWER_DOWN       0x0081
-#define SYSTEM_SLEEP            0x0082
-#define SYSTEM_WAKE_UP          0x0083
-
-// Everything below this point is only intended for usb_serial.c
-
-#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) == 64 ? 0x30 :	\
-			((s) == 32 ? 0x20 :	\
-			((s) == 16 ? 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
-// CDC (communication class device)
-#define CDC_SET_LINE_CODING		0x20
-#define CDC_GET_LINE_CODING		0x21
-#define CDC_SET_CONTROL_LINE_STATE	0x22
diff --git a/src/lib/keyboard.h b/src/lib/keyboard.h
index ee6895d..9e2a686 100644
--- a/src/lib/keyboard.h
+++ b/src/lib/keyboard.h
@@ -289,3 +289,38 @@
 #define MEDIAKEY_BROWSER_STOP     	18
 #define MEDIAKEY_BROWSER_REFRESH  	19
 #define MEDIAKEY_BROWSER_BOOKMARKS	20
+
+/* Consumer Page(0x0C)
+ * following are supported by Windows: http://msdn.microsoft.com/en-us/windows/hardware/gg463372.aspx
+ */
+#define AUDIO_MUTE              0x00E2
+#define AUDIO_VOL_UP            0x00E9
+#define AUDIO_VOL_DOWN          0x00EA
+#define TRANSPORT_NEXT_TRACK    0x00B5
+#define TRANSPORT_PREV_TRACK    0x00B6
+#define TRANSPORT_STOP          0x00B7
+#define TRANSPORT_PLAY_PAUSE    0x00CD
+/* application launch */
+#define AL_CC_CONFIG            0x0183
+#define AL_EMAIL                0x018A
+#define AL_CALCULATOR           0x0192
+#define AL_LOCAL_BROWSER        0x0194
+/* application control */
+#define AC_SEARCH               0x0221
+#define AC_HOME                 0x0223
+#define AC_BACK                 0x0224
+#define AC_FORWARD              0x0225
+#define AC_STOP                 0x0226
+#define AC_REFRESH              0x0227
+#define AC_BOOKMARKS            0x022A
+/* supplement for Bluegiga iWRAP HID(not supported by Windows?) */
+#define AL_LOCK                 0x019E
+#define TRANSPORT_RECORD        0x00B2
+#define TRANSPORT_REWIND        0x00B4
+#define TRANSPORT_EJECT         0x00B8
+#define AC_MINIMIZE             0x0206
+
+/* Generic Desktop Page(0x01) - system power control */
+#define SYSTEM_POWER_DOWN       0x0081
+#define SYSTEM_SLEEP            0x0082
+#define SYSTEM_WAKE_UP          0x0083
diff --git a/src/lib/keyfunctions.h b/src/lib/keyfunctions.h
index 61d1b1a..6836047 100644
--- a/src/lib/keyfunctions.h
+++ b/src/lib/keyfunctions.h
@@ -14,7 +14,6 @@
 #include <stdint.h>
 #include "../main.h"
 #include "../keyboard/layout.h"
-#include "../lib-other/pjrc/usb_keyboard/usb_keyboard.h"
 #include "../lib/keyboard.h"
 
 // --------------------------------------------------------------------
diff --git a/src/main.h b/src/main.h
index e337db8..d00f45a 100644
--- a/src/main.h
+++ b/src/main.h
@@ -11,7 +11,6 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <util/delay.h>
-#include "./lib-other/pjrc/usb_keyboard/usb_keyboard.h"
 #include "./lib/keyfunctions.h"
 #include "./keyboard/controller.h"
 #include "./keyboard/layout.h"