ABLE Application README - TLEUtil
=================================

Copyright 2006 Simtec Electronics


Summary
-------

  The tleutil is a control utility for the GPIO lines on the
  TLE6230 device on the VR2000.

Usage
-----

  > tleutil <value>

  The utility writes the value of the first argument to the output
  control register. The lowest bit of the value corresponds to the
  lowest output control, so 1 will set output 1 on, 2 will set output 2
  on, and 4 will set output 3.

  Note, outputs 1 through 4 are a special case, as they also take into
  account the IN1 through IN4 inputs, anding the value with the output
  from the SPI register. So to turn OUT1 on, IN1 must be high as well as
  the OUT1 bit written by tleutil.

Examples
--------

  Set all outputs off
  
  > tleutil 0x00

  set output 1

  > tleutil 0x01

  set outputs 1 to 4 on [see note]

  > tleutil 0x0f

  set all outputs on

  > tleutil 0xff