diff options
Diffstat (limited to 'gcc/ada/g-sercom-linux.adb')
| -rw-r--r-- | gcc/ada/g-sercom-linux.adb | 314 |
1 files changed, 0 insertions, 314 deletions
diff --git a/gcc/ada/g-sercom-linux.adb b/gcc/ada/g-sercom-linux.adb deleted file mode 100644 index 4140106..0000000 --- a/gcc/ada/g-sercom-linux.adb +++ /dev/null @@ -1,314 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- 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 -- --- -- --- B o d y -- --- -- --- Copyright (C) 2007-2016, 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 3, 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. -- --- -- --- As a special exception under Section 7 of GPL version 3, you are granted -- --- additional permissions described in the GCC Runtime Library Exception, -- --- version 3.1, as published by the Free Software Foundation. -- --- -- --- You should have received a copy of the GNU General Public License and -- --- a copy of the GCC Runtime Library Exception along with this program; -- --- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- --- <http://www.gnu.org/licenses/>. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This is the GNU/Linux implementation of this package - -with Ada.Streams; use Ada.Streams; -with Ada; use Ada; -with Ada.Unchecked_Deallocation; - -with System; use System; -with System.Communication; use System.Communication; -with System.CRTL; use System.CRTL; -with System.OS_Constants; - -with GNAT.OS_Lib; use GNAT.OS_Lib; - -package body GNAT.Serial_Communications is - - package OSC renames System.OS_Constants; - - use type Interfaces.C.unsigned; - - type Port_Data is new int; - - subtype unsigned is Interfaces.C.unsigned; - subtype char is Interfaces.C.char; - subtype unsigned_char is Interfaces.C.unsigned_char; - - function fcntl (fd : int; cmd : int; value : int) return int; - pragma Import (C, fcntl, "fcntl"); - - C_Data_Rate : constant array (Data_Rate) of unsigned := - (B75 => OSC.B75, - B110 => OSC.B110, - B150 => OSC.B150, - B300 => OSC.B300, - B600 => OSC.B600, - B1200 => OSC.B1200, - B2400 => OSC.B2400, - B4800 => OSC.B4800, - B9600 => OSC.B9600, - B19200 => OSC.B19200, - B38400 => OSC.B38400, - B57600 => OSC.B57600, - B115200 => OSC.B115200); - - C_Bits : constant array (Data_Bits) of unsigned := - (CS7 => OSC.CS7, CS8 => OSC.CS8); - - C_Stop_Bits : constant array (Stop_Bits_Number) of unsigned := - (One => 0, Two => OSC.CSTOPB); - - C_Parity : constant array (Parity_Check) of unsigned := - (None => 0, - Odd => OSC.PARENB or OSC.PARODD, - Even => OSC.PARENB); - - procedure Raise_Error (Message : String; Error : Integer := Errno); - pragma No_Return (Raise_Error); - - ---------- - -- Name -- - ---------- - - function Name (Number : Positive) return Port_Name is - N : constant Natural := Number - 1; - N_Img : constant String := Natural'Image (N); - begin - return Port_Name ("/dev/ttyS" & N_Img (N_Img'First + 1 .. N_Img'Last)); - end Name; - - ---------- - -- Open -- - ---------- - - procedure Open - (Port : out Serial_Port; - Name : Port_Name) - is - use OSC; - - C_Name : constant String := String (Name) & ASCII.NUL; - Res : int; - - begin - if Port.H = null then - Port.H := new Port_Data; - end if; - - Port.H.all := Port_Data (open - (C_Name (C_Name'First)'Address, int (O_RDWR + O_NOCTTY + O_NDELAY))); - - if Port.H.all = -1 then - Raise_Error ("open: open failed"); - end if; - - -- By default we are in blocking mode - - Res := fcntl (int (Port.H.all), F_SETFL, 0); - - if Res = -1 then - Raise_Error ("open: fcntl failed"); - end if; - end Open; - - ----------------- - -- Raise_Error -- - ----------------- - - procedure Raise_Error (Message : String; Error : Integer := Errno) is - begin - raise Serial_Error with Message - & (if Error /= 0 - then " (" & Errno_Message (Err => Error) & ')' - else ""); - end Raise_Error; - - ---------- - -- Read -- - ---------- - - overriding procedure Read - (Port : in out Serial_Port; - Buffer : out Stream_Element_Array; - Last : out Stream_Element_Offset) - is - Len : constant size_t := Buffer'Length; - Res : ssize_t; - - begin - if Port.H = null then - Raise_Error ("read: port not opened", 0); - end if; - - Res := read (Integer (Port.H.all), Buffer'Address, Len); - - if Res = -1 then - Raise_Error ("read failed"); - end if; - - Last := Last_Index (Buffer'First, size_t (Res)); - end Read; - - --------- - -- Set -- - --------- - - 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; - Local : Boolean := True; - Flow : Flow_Control := None; - Timeout : Duration := 10.0) - is - use OSC; - - type termios is record - c_iflag : unsigned; - c_oflag : unsigned; - c_cflag : unsigned; - c_lflag : unsigned; - c_line : unsigned_char; - c_cc : Interfaces.C.char_array (0 .. 31); - c_ispeed : unsigned; - c_ospeed : unsigned; - end record; - pragma Convention (C, termios); - - function tcgetattr (fd : int; termios_p : Address) return int; - pragma Import (C, tcgetattr, "tcgetattr"); - - function tcsetattr - (fd : int; action : int; termios_p : Address) return int; - pragma Import (C, tcsetattr, "tcsetattr"); - - function tcflush (fd : int; queue_selector : int) return int; - pragma Import (C, tcflush, "tcflush"); - - Current : termios; - - Res : int; - pragma Warnings (Off, Res); - -- Warnings off, since we don't always test the result - - begin - if Port.H = null then - Raise_Error ("set: port not opened", 0); - end if; - - -- Get current port settings - - Res := tcgetattr (int (Port.H.all), Current'Address); - - -- Change settings now - - Current.c_cflag := C_Data_Rate (Rate) - or C_Bits (Bits) - or C_Stop_Bits (Stop_Bits) - or C_Parity (Parity) - or CREAD; - Current.c_iflag := 0; - Current.c_lflag := 0; - Current.c_oflag := 0; - - if Local then - Current.c_cflag := Current.c_cflag or CLOCAL; - end if; - - case Flow is - when None => - null; - - when RTS_CTS => - Current.c_cflag := Current.c_cflag or CRTSCTS; - - when Xon_Xoff => - Current.c_iflag := Current.c_iflag or IXON; - end case; - - Current.c_ispeed := Data_Rate_Value (Rate); - Current.c_ospeed := Data_Rate_Value (Rate); - Current.c_cc (VMIN) := char'Val (0); - Current.c_cc (VTIME) := char'Val (Natural (Timeout * 10)); - - -- Set port settings - - Res := tcflush (int (Port.H.all), TCIFLUSH); - Res := tcsetattr (int (Port.H.all), TCSANOW, Current'Address); - - -- Block - - Res := fcntl (int (Port.H.all), F_SETFL, (if Block then 0 else FNDELAY)); - - if Res = -1 then - Raise_Error ("set: fcntl failed"); - end if; - end Set; - - ----------- - -- Write -- - ----------- - - overriding procedure Write - (Port : in out Serial_Port; - Buffer : Stream_Element_Array) - is - Len : constant size_t := Buffer'Length; - Res : ssize_t; - - begin - if Port.H = null then - Raise_Error ("write: port not opened", 0); - end if; - - Res := write (int (Port.H.all), Buffer'Address, Len); - - if Res = -1 then - Raise_Error ("write failed"); - end if; - - pragma Assert (size_t (Res) = Len); - end Write; - - ----------- - -- Close -- - ----------- - - procedure Close (Port : in out Serial_Port) is - procedure Unchecked_Free is - new Unchecked_Deallocation (Port_Data, Port_Data_Access); - - Res : int; - pragma Unreferenced (Res); - - begin - if Port.H /= null then - Res := close (int (Port.H.all)); - Unchecked_Free (Port.H); - end if; - end Close; - -end GNAT.Serial_Communications; |