-- Services for the Mikroelektronika Expand Click

-- Copyright (C)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:
--
-- * Redistributions of source code must retain the above copyright notice,
--   this list of conditions and the following disclaimer.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.

WITH GPIO;
WITH SPI;
WITH MCP23x17;

PACKAGE ClickBoard.Expand IS

  -- SPI transfer characteristics

  SPI_Mode      : Natural RENAMES MCP23x17.SPI_Mode;
  SPI_WordSize  : Natural RENAMES MCP23x17.SPI_WordSize;
  SPI_Frequency : Natural RENAMES MCP23x17.SPI_Frequency;

  -- Create MCP23S17 I/O expander object from SPI device object

  FUNCTION Create
   (rstpin : NOT NULL GPIO.Pin;
    spidev : NOT NULL SPI.Device;
    addr   : MCP23x17.Address := MCP23x17.DefaultAddress) RETURN MCP23x17.Device;

END ClickBoard.Expand;