README
======

  This README file discusses the port of NuttX to the MT-DB-X3 development
  board from MattairTech.  This board may host a variety of 64-pin AVR XMega
  part.  This port was specifically performed using the ATXmega384c3.

  See the MattairTech website for further information about the MT-DB-X3:
  http://www.mattairtech.com/.

  NOTE: There is no port for the XMEGA in place as of this writing.  At this
  point in time, this README file is only a repository for pre-porting
  information.  It is not clear as of this writing whether there ever will
  be a port to the MT-DB-X3 development board or not.

Contents
========

  - PIO Usage
  - LEDs and Buttons
  - Serial Console
  - Configurations

PIO Usage
=========

  PA0  CONN_P_10 pin 1, Aref via J34
  PA1  CONN_P_10 pin 2
  PA2  CONN_P_10 pin 3
  PA3  CONN_P_10 pin 4
  PA4  CONN_P_10 pin 5
  PA5  CONN_P_10 pin 6
  PA6  CONN_P_10 pin 7
  PA7  CONN_P_10 pin 8

  PB0  CONN_P_10 pin 9, Aref via J25
  PB1  CONN_P_10 pin 10
  PB2  C4_LS CONN_P14 pin 5
  PB3  C4_LS CONN_P14 pin 5
  PB4  C4_LS CONN_P14 pin 5, Alt JTAG TMS
  PB5  C4_LS CONN_P14 pin 5, Alt JTAG TDI
  PB6  C4_LS CONN_P14 pin 5, Alt JTAG TCK
  PB7  C4_LS CONN_P14 pin 5, Alt JTAG TDO, Voltage measurement via J15

  PC0  C0_LS CONN_P14 pin 7
  PC1  C1_LS CONN_P14 pin 8
  PC2  C2_LS CONN_P14 pin 9
  PC3  C3_LS CONN_P14 pin 10
  PC4  C4_LS CONN_P14 pin 5, PDI/SPI Header pin 5 via J8
  PC5  C5_LS CONN_P14 pin 6, PDI/SPI Header pin 4 via J8
  PC6  C6_LS CONN_P14 pin 7, PDI/SPI Header pin 1 via J13
  PC7  C7_LS CONN_P14 pin 8, PDI/SPI Header pin 3 via J12

  PD0  CONN_P14 pin 9
  PD1  CONN_P14 pin 10
  PD2  CONN_P14 pin 11
  PD3  CONN_P14 pin 12
  PD4  CONN_P14 pin 13
  PD5  CONN_P14 pin 14, TXB0103 Output Enable
  PD6  CONN_P14 pin 12, USB D-
  PD7  CONN_P14 pin 13, USB D+

  PE0  CONN_P10 pin 1
  PE1  CONN_P10 pin 2
  PE2  CONN_P10 pin 3
  PE3  CONN_P10 pin 4
  PE4  CONN_P10 pin 5
  PE5  CONN_P10 pin 6
  PE6  CONN_P10 pin 7, TOSC1 via J28
  PE7  CONN_P10 pin 8, TOSC1 via J29

  PF0  PORT F pin 1
  PF1  PORT F pin 2
  PF2  PORT F pin 3
  PF3  PORT F pin 4
  PF4  PORT F pin 5, Bootloader jumper
  PF5  PORT F pin 6
  PF6  PORT F pin 7, Green LED via J31
  PF7  PORT F pin 8, User button via J33 (otherwise reset)

LEDs and Buttons
================

Serial Console
==============

Configurations
==============