#ifndef iic_H
#define iic_H

/* C header file for IIC
 * written by DefMod (Dec 31 2005) on Sat Dec 31 14:05:28 2005
 * Jonathan Coxhead, jonathan@doves.demon.co.uk, 12 May 1995
 */

/*OSLib---efficient, type-safe, transparent, extensible,
   register-safe A P I coverage of RISC O S*/
/*Copyright © 1994 Jonathan Coxhead*/

/*
      OSLib is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 1, or (at your option)
   any later version.

      OSLib is distributed in the hope that it will be useful,
   but WITHOUT 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
   along with this programme; if not, write to the Free Software
   Foundation, Inc, 675 Mass Ave, Cambridge, MA 02139, U S A.
*/

#ifndef types_H
#include "oslib/types.h"
#endif

#ifndef os_H
#include "oslib/os.h"
#endif

#if defined NAMESPACE_OSLIB
  namespace OSLib {
#endif

/**********************************
 * SWI names and SWI reason codes *
 **********************************/
#undef  IIC_Control
#define IIC_Control                             0x240
#undef  XIIC_Control
#define XIIC_Control                            0x20240
#undef  IICControl_Read
#define IICControl_Read                         0x1
#undef  IICControl_Write
#define IICControl_Write                        0x0

/************************
 * Constant definitions *
 ************************/
#define error_IIC_NO_ACKNOWLEDGE                0x20300u

/*************************
 * Function declarations *
 *************************/

#ifdef __cplusplus
   extern "C" {
#endif

/* ------------------------------------------------------------------------
 * Function:      iiccontrol_read()
 *
 * Description:   Reads from an IIC device
 *
 * Input:         device - value of R0 on entry
 *                buffer - value of R1 on entry
 *                size - value of R2 on entry
 *
 * Other notes:   Calls SWI 0x240 with R0 |= 0x1.
 */

extern os_error *xiiccontrol_read (int *device,
      byte *buffer,
      int size);
extern void iiccontrol_read (int *device,
      byte *buffer,
      int size);

/* ------------------------------------------------------------------------
 * Function:      iiccontrol_write()
 *
 * Description:   Writes to an IIC device
 *
 * Input:         device - value of R0 on entry
 *                data - value of R1 on entry
 *                size - value of R2 on entry
 *
 * Other notes:   Calls SWI 0x240 with R0 |= 0x0.
 */

extern os_error *xiiccontrol_write (int *device,
      byte const *data,
      int size);
extern void iiccontrol_write (int *device,
      byte const *data,
      int size);

#ifdef __cplusplus
   }
#endif

#if defined NAMESPACE_OSLIB
  } 
#endif

#endif
