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                                      MPS-1
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legend:

  + - new feature
  * - change/update
  ! - bug fix
  ? - known issue

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v3.2.0.2, 14.7.2015, Davor

  + Gain is added as a new parameter (MPS mode only).
  * Acceptable amplitude for car detection changed from 0.5 to 0.4.
  + When entering bootloader, LED is turned off.

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v3.2.0.1, 11.6.2015, Damir

  * To avoid false detection, at least two begining samples are rejected.

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v3.2.0.0, 1.4.2015, Davor

  + Non destructive test of AA line added (broadcast_command=4).
  * Autoaddress now have 3 LED intensity levels: 1-off, 2-20% and 3-100%.
  * Autoaddress range changed to start from address 1 (before 100).
  * Autoaddress polarity changed, AA line is now active low (before +24V).
  * Autoaddress error assigns serial number, or random (1001..2000) when serial
    is not valid (before the address was unchanged).
  * Diagnostic variables are sent only in MPS mode (address >=1000), and when
    diagnostic_enable is set.

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v3.0.0.8, 14.7.2015, Davor

  * Acceptable amplitude for car detection changed from 0.5 to 0.25.

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v3.0.0.7, 11.6.2015, Damir

  * To avoid false detection, at least two begining samples are rejected.

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v3.0.0.6, 9.6.2015, Damir

  * Inputs IX0 and IX1 are ignored, in order to prevent false detection.

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v3.0.0.5, 20.2.2015, Davor

  * Modification of car detection algorythm, number of rejected samples is now
    calculated, instead of using a fixed value (6).

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v3.0.0.4, 25.11.2014, Davor

  * LEDs turned off during autoaddressing, calibration and in fallback mode.
  + Status message period depends on baudrate: 0.5s for 100/250/500kbps, 1s for
    50kbps, 2s for 20kbps.

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v3.0.0.3, 16.7.2012, Davor

  ! Too frequent sending CAN error counters prevented.
  ? Works only with NAD-s up to 65535.

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v3.0.0.2, 15.6.2012, Davor & Damir

  * LED fade/blink algorythm completely rewritten.
  * Distance/calibration/car detection algorythms marginally improved.
  + CAN error counters (CANTEC, CANREC) exposed as bus_error_counters.
  + LED fade-out time shortened to 256ms.
  ! Error signalization added to fallback functionality.
  ! Unsuccessful calibration do not erase previous valid one.
  ! Autoaddressing and calibration signalization finish at precise time.
  ? Works only with NAD-s up to 65535.

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v3.0.0.1, 25.05.2012, Davor

  + Calibration signalization added.
  * Distance validity criteria changed.
  ! MPM functionality start calibration bug fixed.
  ! MPM functionality led setting bug fixed.
  ! Blinking frequnecy bug fixed.
  ? Works only with NAD-s up to 65535.

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v3.0.0.0, 22.05.2012, Davor

  + First release, algorythm used from old ATMEGA sensor.
  ? Works only with NAD-s up to 65535.

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