Major USB update, fixes most (if not all) known issues USB - General - Refactored descriptors - Enabled/Disable USB endpoints - Added debug flags for special features - Code cleanup - Interface count calculation based off of enabled endpoints - Delayed wTotalLength calculation to simplify descriptor offsets - Re-ordered endpoints and interfaces - Added more debug output - Added usbInitTime to show how long keyboard initialization took (Useful when debugging bad init sequences) - Added function for usb_resume() which takes care of the resume sequence * Resume is now only called if packets are starting to timeout USB - Special Options - Added enableDeviceRestartOnUSBTimeout * A last resort hammer for bad USB Chipsets/OSs, don't use if you can help it * Disabled - Added enableUSBResume * Enables host resume wake-up signalling, required to wake a computer from sleep * Enabled - Added enableUSBLowPowerNegotiation * Enables power negotiation hack * Required to use firmware with an IPad and other hard-limit low-power USB hosts * Hasn't been tested with the recent changes * Disabled - Added enableUSBSuspend * Enables power down events on host USB bus suspend * Enabled USB - Keyboard - Attempted to cleanup HID SET_REPORT * Works much better * Still has an issue under Linux which generates *a lot* of NAKs (initializes quickly regardless) + Not present on other keyboards + SETUP -> OUT -> IN : This sequence is the problem + Specifically during the OUT phase - Enabled USB - CDC Virtual Serial Port - Code cleanup - Added convenience struct USBCDCLineCoding for easier debugging - Attempted to cleanup CDC_SET_LING_CODING * Works much better * Still has an issue under Linux which generates *a lot* of NAKs (initializes quickly regardless) + SETUP -> OUT -> IN : This sequence is the problem + Specifically during the OUT phase + Likely the same issues as HID SET_REPORT - Enabled USB - Mouse - Enabled USB - Joystick - Disabled USB - RawIO - Initial code, API not used yet - Disabled DFU - Updated load script, now faster

--- a/Output/pjrcUSB/arm/usb_serial.h	Sun May 29 10:27:21 2016 -0700
+++ b/Output/pjrcUSB/arm/usb_serial.h	Tue May 31 00:19:45 2016 -0700
@@ -1,7 +1,7 @@
 /* Teensyduino Core Library
  * http://www.pjrc.com/teensy/
  * Copyright (c) 2013 PJRC.COM, LLC.
- * Modifications by Jacob Alexander (2013-2015)
+ * Modifications 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
@@ -50,9 +50,36 @@
 
 
 
+// ----- Structs -----
+
+// See: Universal Serial Bus Class Definitions for Communication Devices 1.11 Table 50
+// dwDTERate   - Baud Rate : 4 bytes
+// bCharFormat - Stop Bits : 1 byte
+//   0: 1   stop bit
+//   1: 1.5 stop bits
+//   2: 2   stop bits
+// bParityType - Parity    : 1 byte
+//   0: None
+//   1: Odd
+//   2: Even
+//   3: Mark
+//   4: Space
+// bDataBits   - Data Bits : 1 byte
+//  (5,6,7,8 or 16)
+//
+// Struct is 7 bytes wide
+typedef struct USBCDCLineCoding {
+	uint32_t dwDTERate;   // Baud Rate
+	uint8_t  bCharFormat; // Stop Bits
+	uint8_t  bParityType; // Parity
+	uint8_t  bDataBits;   // Data Bits
+} USBCDCLineCoding;
+
+
+
 // ----- Variables -----
 
-extern volatile uint8_t usb_cdc_line_coding[7];
+extern volatile USBCDCLineCoding usb_cdc_line_coding;
 
 extern volatile uint8_t usb_cdc_line_rtsdtr;
 extern volatile uint8_t usb_cdc_transmit_flush_timer;