-- Pressure measurement definitions -- Copyright (C)2016-2023, 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.Text_IO; WITH IO_Interfaces; PACKAGE Pressure IS TYPE Pascals IS NEW Float; -- Conversion factors Pascals_per_atmosphere : CONSTANT := 1.01325E+05; Pascals_per_millibar : CONSTANT := 1.0E+02; Pascals_per_bar : CONSTANT := 1.0E+05; Pascals_per_PSI : CONSTANT := 6.894757E+03; Pascals_per_inches_mercury : CONSTANT := 3.386389E+03; -- Instantiate text I/O package PACKAGE Pascals_IO IS NEW Ada.Text_IO.Float_IO(Pascals); -- Instantiate abstract interfaces package PACKAGE Interfaces IS NEW IO_Interfaces(Pascals); -- Define an abstract interface for pressure sensor inputs, derived from -- Interfaces.InputInterface TYPE InputInterface IS INTERFACE AND Interfaces.InputInterface; -- Define an access type compatible with any subclass implementing -- InputInterface TYPE Input IS ACCESS ALL InputInterface'Class; END Pressure;