(* libsimpleio bindings for GNU Modula-2 *)

(* Copyright (C)2018-2023, 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.                                                 *)

DEFINITION MODULE FOR "C" libi2c;

  IMPORT
    SYSTEM;

  EXPORT UNQUALIFIED
    I2C_open,
    I2C_close,
    I2C_transaction;

  PROCEDURE I2C_open
   (name      : ARRAY OF CHAR;
    VAR fd    : INTEGER;
    VAR error : CARDINAL);

  PROCEDURE I2C_close
   (fd        : INTEGER;
    VAR error : CARDINAL);

  PROCEDURE I2C_transaction
   (fd        : INTEGER;
    slaveaddr : CARDINAL;
    cmd       : SYSTEM.ADDRESS;
    cmdlen    : CARDINAL;
    resp      : SYSTEM.ADDRESS;
    resplen   : CARDINAL;
    VAR error : CARDINAL);

END libi2c.