{ Abstract interface for variable speed motor control 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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UNIT Motor;

INTERFACE

  USES
    SysUtils;

  CONST
    VELOCITY_MIN  = -1.0;  { Full speed reverse }
    VELOCITY_MAX  = 1.0;   { Full speed forward }
    VELOCITY_STOP = 0.0;

  TYPE

    { Define an exception for motor errors }

    Error = CLASS(Exception);

    { Define an interface for motor control outputs }

    Output = INTERFACE

      { Write method }

      PROCEDURE Write(velocity : Real);

      { Velocity property }

      PROPERTY velocity : Real WRITE Write;
    END;

IMPLEMENTATION

END.