{ Remote I/O 74HC595 Shift Register GPIO Pin 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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{ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" }
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{ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  }
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{ POSSIBILITY OF SUCH DAMAGE.                                                 }

PROGRAM test_74x595_gpio;

USES
  GPIO,
  RemoteIO_Client,
  RemoteIO_Client_hidapi,
  SPI,
  SPI_Shift_Register,
  SPI_Shift_Register_74HC595,
  SPI_Shift_Register_GPIO;

VAR
  remdev : RemoteIO_Client.Device;
  spidev : SPI.Device;
  regdev : SPI_Shift_Register.Device;
  pin    : GPIO.Pin;

BEGIN
  Writeln;
  Writeln('Remote I/O 74HC595 Shift Register GPIO Pin Test');
  Writeln;

  { Create objects }

  remdev := RemoteIO_Client_hidapi.Create;
  spidev := remdev.SPI(0, SPI_Shift_Register_74HC595.SPI_Clock_Mode, 8,
    SPI_Shift_Register_74HC595.SPI_Clock_Max);
  regdev := SPI_Shift_Register.Device.Create(spidev);
  pin    := SPI_Shift_Register_GPIO.PinSubclass.Create(regdev, 0);

  { Toggle pin }

  REPEAT
    pin.State := NOT pin.State;
  UNTIL False;
END.