I have been fighting for awhile to get only a keyboard device using a teensy LC but selecting the usb type keyboard still creates a composite device that includes serial, keyboard and multimedia keyboard.

I've been able to get keyboard only by editing usb_desc.h and yield.cpp, but I was wondering if this could be added as a feature you could select from the menu.

I.e. the build actually doing what it says it is doing by ONLY making a keyboard, not a multi device like it currently does.

Example usb_desc.h

Code:
#elif defined(USB_KEYBOARDONLY)
  #define VENDOR_ID		0x16C0
  #define PRODUCT_ID		0x04D0
  #define MANUFACTURER_NAME	{'T','e','e','n','s','y','d','u','i','n','o'}
  #define MANUFACTURER_NAME_LEN	11
  #define PRODUCT_NAME		{'K','e','y','b','o','a','r','d'}
  #define PRODUCT_NAME_LEN	8
  #define EP0_SIZE		64
  #define NUM_ENDPOINTS         1
  #define NUM_USB_BUFFERS	14
  #define NUM_INTERFACE		1
  //#define SEREMU_INTERFACE      1	// Serial emulation
  //#define SEREMU_TX_ENDPOINT    1
  //#define SEREMU_TX_SIZE        64
  //#define SEREMU_TX_INTERVAL    1
  //#define SEREMU_RX_ENDPOINT    2
  //#define SEREMU_RX_SIZE        32
  //#define SEREMU_RX_INTERVAL    2
  #define KEYBOARD_INTERFACE    0	// Keyboard
  #define KEYBOARD_ENDPOINT     1
  #define KEYBOARD_SIZE         8
  #define KEYBOARD_INTERVAL     1
  //#define KEYMEDIA_INTERFACE    2	// Keyboard Media Keys
  //#define KEYMEDIA_ENDPOINT     4
  //#define KEYMEDIA_SIZE         8
  //#define KEYMEDIA_INTERVAL     4
  #define ENDPOINT1_CONFIG	ENDPOINT_TRANSMIT_ONLY
  //#define ENDPOINT2_CONFIG	ENDPOINT_RECEIVE_ONLY
  //#define ENDPOINT3_CONFIG	ENDPOINT_TRANSMIT_ONLY
  //#define ENDPOINT4_CONFIG	ENDPOINT_TRANSMIT_ONLY
  //#define ENDPOINT5_CONFIG	ENDPOINT_TRANSMIT_ONLY
  //#define ENDPOINT6_CONFIG	ENDPOINT_TRANSMIT_ONLY

And sample yield.cpp

Code:
#include <Arduino.h>
#include "EventResponder.h"

void yield(void) __attribute__ ((weak));
void yield(void)
{
	static uint8_t running=0;

	if (running) return; // TODO: does this need to be atomic?
	running = 1;
	//if (Serial.available()) serialEvent();
	if (Serial1.available()) serialEvent1();
	if (Serial2.available()) serialEvent2();
	if (Serial3.available()) serialEvent3();
#ifdef HAS_KINETISK_UART3
	if (Serial4.available()) serialEvent4();
#endif
#ifdef HAS_KINETISK_UART4
	if (Serial5.available()) serialEvent5();
#endif
#if defined(HAS_KINETISK_UART5) || defined (HAS_KINETISK_LPUART0)
	if (Serial6.available()) serialEvent6();
#endif
	running = 0;
	EventResponder::runFromYield();
};