{ PCA8574 I2C GPIO Expander Device Toggle Test }

{ 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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{ POSSIBILITY OF SUCH DAMAGE.                                                 }

PROGRAM test_pca8574_device;

USES
  I2C,
  PCA8574,
  RemoteIO_Client,
  RemoteIO_Client_hidapi,
  SysUtils;

VAR
  remdev : RemoteIO_Client.Device;
  bus    : I2C.Bus;
  dev    : PCA8574.Device;

BEGIN
  Writeln;
  Writeln('PCA8574 I2C GPIO Expander Device Toggle Test');
  Writeln;

  { Create objects }

  remdev := RemoteIO_Client_hidapi.Create;
  bus    := remdev.I2C(0);
  dev    := PCA8574.Device.Create(bus, $38);

  { Toggle pins }

  REPEAT
    dev.Write(NOT dev.Read);
  UNTIL False;
END.