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-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- G N A T . S E R I A L _ C O M M U N I C A T I O N S --
--- --
--- S p e c --
--- --
--- Copyright (C) 2007-2008, AdaCore --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- Serial communications package, implemented on Windows and GNU/Linux
-
-with Ada.Streams;
-with Interfaces.C;
-
-package GNAT.Serial_Communications is
-
- Serial_Error : exception;
- -- Raised when a communication problem occurs
-
- type Port_Name is new String;
- -- A serial com port name
-
- function Name (Number : Positive) return Port_Name;
- -- Returns a possible port name for the given legacy PC architecture serial
- -- port number (COM<number>: on Windows, ttyS<number-1> on Linux).
- -- Note that this function does not support other kinds of serial ports
- -- nor operating systems other than Windows and Linux. For all other
- -- cases, an explicit port name can be passed directly to Open.
-
- type Data_Rate is
- (B1200, B2400, B4800, B9600, B19200, B38400, B57600, B115200);
- -- Speed of the communication
-
- type Data_Bits is (CS8, CS7);
- -- Communication bits
-
- type Stop_Bits_Number is (One, Two);
- -- One or two stop bits
-
- type Parity_Check is (None, Even, Odd);
- -- Either no parity check or an even or odd parity
-
- type Serial_Port is new Ada.Streams.Root_Stream_Type with private;
-
- procedure Open
- (Port : out Serial_Port;
- Name : Port_Name);
- -- Open the given port name. Raises Serial_Error if the port cannot be
- -- opened.
-
- procedure Set
- (Port : Serial_Port;
- Rate : Data_Rate := B9600;
- Bits : Data_Bits := CS8;
- Stop_Bits : Stop_Bits_Number := One;
- Parity : Parity_Check := None;
- Block : Boolean := True;
- Timeout : Duration := 10.0);
- -- The communication port settings. If Block is set then a read call
- -- will wait for the whole buffer to be filed. If Block is not set then
- -- the given Timeout (in seconds) is used. Note that the timeout precision
- -- may be limited on some implementation (e.g. on GNU/Linux the maximum
- -- precision is a tenth of seconds).
-
- overriding procedure Read
- (Port : in out Serial_Port;
- Buffer : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset);
- -- Read a set of bytes, put result into Buffer and set Last accordingly.
- -- Last is set to 0 if no byte has been read.
-
- overriding procedure Write
- (Port : in out Serial_Port;
- Buffer : Ada.Streams.Stream_Element_Array);
- -- Write buffer into the port
-
- procedure Close (Port : in out Serial_Port);
- -- Close port
-
-private
-
- type Port_Data;
- type Port_Data_Access is access Port_Data;
-
- type Serial_Port is new Ada.Streams.Root_Stream_Type with record
- H : Port_Data_Access;
- end record;
-
- Data_Rate_Value : constant array (Data_Rate) of Interfaces.C.unsigned :=
- (B1200 => 1_200,
- B2400 => 2_400,
- B4800 => 4_800,
- B9600 => 9_600,
- B19200 => 19_200,
- B38400 => 38_400,
- B57600 => 57_600,
- B115200 => 115_200);
-
-end GNAT.Serial_Communications;