-- Abstract device services using the Remote I/O Protocol
-- Copyright (C)2019-2023, 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 Ada.Strings.Fixed;
WITH Messaging;
USE TYPE Messaging.Byte;
PACKAGE BODY RemoteIO.Abstract_Device IS
-- Abstract device object constructor
FUNCTION Create
(remdev : NOT NULL RemoteIO.Client.Device;
channel : RemoteIO.ChannelNumber) RETURN Device IS
BEGIN
RETURN NEW DeviceClass'(remdev, channel);
END Create;
-- Get abstract device information string
FUNCTION GetInfo
(Self : IN OUT DeviceClass) RETURN String IS
mcmd : Message64.Message;
mresp : Message64.Message;
info : String(1 .. 61);
BEGIN
mcmd := (OTHERS => 0);
mcmd(0) := Messaging.Byte(RemoteIO.MessageTypes'Pos(
RemoteIO.DEVICE_INFO_REQUEST));
mcmd(2) := Messaging.Byte(Self.channel);
Self.remdev.Transaction(mcmd, mresp);
info := (OTHERS => ' ');
FOR i IN info'Range LOOP
EXIT WHEN mresp(2 + i) = 0;
info(i) := Character'Val(mresp(2 + i));
END LOOP;
RETURN Ada.Strings.Fixed.Trim(info, Ada.Strings.Right);
END GetInfo;
-- Perform abstract device operation
PROCEDURE Operation
(Self : DeviceClass;
cmd : Command;
resp : OUT Response) IS
mcmd : Message64.Message;
mresp : Message64.Message;
BEGIN
mcmd := FromCommand(cmd);
mcmd(0) := Messaging.Byte(RemoteIO.MessageTypes'Pos(RemoteIO.DEVICE_OPERATION_REQUEST));
mcmd(1) := 0;
mcmd(2) := Messaging.Byte(Self.channel);
-- Execute the command
Self.remdev.Transaction(mcmd, mresp);
-- Extract the response from the response message
resp := ToResponse(mresp);
END Operation;
END RemoteIO.Abstract_Device;