Adding dynamic USB power support - Each scan module now has a current change callback which passes the available current as a parameter - No longer attempts to use the max 500 mA immediately, starts with 100 mA then goes to 500 mA after enumeration - If enumeration fails due to bMaxPower of 500 mA, then attempt again at 100 mA (might also be possible to go even lower to 20 mA in certain cases) - Now working with the Apple Ipad (no over-power messages) - Fixed Wake-up behaviour on Apple Ipad (and likely other iOS devices) - More effecient set_feature/clear_feature handling (device handler) - Initial power handling via Interconnect (still needs work to get it more dynamic)

--- a/Output/pjrcUSB/arm/usb_desc.h	Sun Feb 21 14:19:52 2016 -0800
+++ b/Output/pjrcUSB/arm/usb_desc.h	Sun Feb 21 19:56:52 2016 -0800
@@ -1,7 +1,7 @@
 /* Teensyduino Core Library
  * http://www.pjrc.com/teensy/
  * Copyright (c) 2013 PJRC.COM, LLC.
- * Modified by Jacob Alexander (2013-2015)
+ * Modified by Jacob Alexander (2013-2016)
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -137,3 +137,5 @@
 
 extern const usb_descriptor_list_t usb_descriptor_list[];
 
+extern uint8_t *usb_bMaxPower;
+