{ Abstract interface for servo output devices }

{ Copyright (C)2018-2023, Philip Munts dba Munts Technologies.                }
{                                                                             }
{ Redistribution and use in source and binary forms, with or without          }
{ modification, are permitted provided that the following conditions are met: }
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{   this list of conditions and the following disclaimer.                     }
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{ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" }
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{ POSSIBILITY OF SUCH DAMAGE.                                                 }

UNIT Servo;

INTERFACE

  USES
    SysUtils;

  CONST
    POSITION_MIN     = -1.0;  { Full reverse }
    POSITION_MAX     = 1.0;   { Full forward }
    POSITION_NEUTRAL = 0.0;

  TYPE

    { Define an exception for servo errors }

    Error = CLASS(Exception);

    { Define an interface for servo outputs }

    Output = INTERFACE

      { Write method }

      PROCEDURE Write(position : Real);

      { Position property }

      PROPERTY position : Real WRITE Write;
    END;

IMPLEMENTATION

END.