#ifndef CYGONCE_SERIALIO_H
#define CYGONCE_SERIALIO_H
// ====================================================================
//
//      serialio.h
//
//      Device I/O 
//
// ====================================================================
//####COPYRIGHTBEGIN####
//
// -------------------------------------------
// The contents of this file are subject to the Cygnus eCos Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License.  You may obtain a copy of the License at
// http://sourceware.cygnus.com/ecos
// 
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
// License for the specific language governing rights and limitations under
// the License.
// 
// The Original Code is eCos - Embedded Cygnus Operating System, released
// September 30, 1998.
// 
// The Initial Developer of the Original Code is Cygnus.  Portions created
// by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions.  All Rights Reserved.
// -------------------------------------------
//
//####COPYRIGHTEND####
// ====================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   gthomas
// Contributors:        gthomas
// Date:        1999-02-04
// Purpose:     Special support for serial I/O devices
// Description:
//
//####DESCRIPTIONEND####
//
// ====================================================================

// This file contains the user-level visible I/O interfaces

#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
#include <cyg/io/config_keys.h>

#ifdef __cplusplus
extern "C" {
#endif

// Supported baud rates
typedef enum {
    CYGNUM_SERIAL_BAUD_50 = 1,
    CYGNUM_SERIAL_BAUD_75,
    CYGNUM_SERIAL_BAUD_110,
    CYGNUM_SERIAL_BAUD_134_5,
    CYGNUM_SERIAL_BAUD_150,
    CYGNUM_SERIAL_BAUD_200,
    CYGNUM_SERIAL_BAUD_300,
    CYGNUM_SERIAL_BAUD_600,
    CYGNUM_SERIAL_BAUD_1200,
    CYGNUM_SERIAL_BAUD_1800,
    CYGNUM_SERIAL_BAUD_2400,
    CYGNUM_SERIAL_BAUD_3600,
    CYGNUM_SERIAL_BAUD_4800,
    CYGNUM_SERIAL_BAUD_7200,
    CYGNUM_SERIAL_BAUD_9600,
    CYGNUM_SERIAL_BAUD_14400,
    CYGNUM_SERIAL_BAUD_19200,
    CYGNUM_SERIAL_BAUD_38400,
    CYGNUM_SERIAL_BAUD_57600,
    CYGNUM_SERIAL_BAUD_115200,
    CYGNUM_SERIAL_BAUD_234000
} cyg_serial_baud_rate_t;
#define CYGNUM_SERIAL_BAUD_MIN CYGNUM_SERIAL_BAUD_50 
#define CYGNUM_SERIAL_BAUD_MAX CYGNUM_SERIAL_BAUD_234000

// Note: two levels of macro are required to get proper expansion.
#define _CYG_SERIAL_BAUD_RATE(n) CYGNUM_SERIAL_BAUD_##n
#define CYG_SERIAL_BAUD_RATE(n) _CYG_SERIAL_BAUD_RATE(n)

// Stop bit selections
typedef enum {
    CYGNUM_SERIAL_STOP_1 = 1,
    CYGNUM_SERIAL_STOP_1_5,
    CYGNUM_SERIAL_STOP_2
} cyg_serial_stop_bits_t;

// Parity modes
typedef enum {
    CYGNUM_SERIAL_PARITY_NONE = 0,
    CYGNUM_SERIAL_PARITY_EVEN,
    CYGNUM_SERIAL_PARITY_ODD,
    CYGNUM_SERIAL_PARITY_MARK,
    CYGNUM_SERIAL_PARITY_SPACE
} cyg_serial_parity_t;

// Word length
typedef enum {
    CYGNUM_SERIAL_WORD_LENGTH_5 = 5,
    CYGNUM_SERIAL_WORD_LENGTH_6,
    CYGNUM_SERIAL_WORD_LENGTH_7,
    CYGNUM_SERIAL_WORD_LENGTH_8
} cyg_serial_word_length_t;

typedef struct {
    cyg_serial_baud_rate_t   baud;
    cyg_serial_stop_bits_t   stop;
    cyg_serial_parity_t      parity;
    cyg_serial_word_length_t word_length;
    cyg_uint32               flags;
} cyg_serial_info_t;

#define CYG_SERIAL_INFO_INIT(_baud,_stop,_parity,_word_length,_flags) \
  { _baud, _stop, _parity, _word_length, _flags}

// Control flags
#define CYG_SERIAL_FLAGS_RTSCTS    0x0001

// Default configuration
#define CYG_SERIAL_BAUD_DEFAULT        CYGNUM_SERIAL_BAUD_38400
#define CYG_SERIAL_STOP_DEFAULT        CYGNUM_SERIAL_STOP_1
#define CYG_SERIAL_PARITY_DEFAULT      CYGNUM_SERIAL_PARITY_NONE
#define CYG_SERIAL_WORD_LENGTH_DEFAULT CYGNUM_SERIAL_WORD_LENGTH_8
#define CYG_SERIAL_FLAGS_DEFAULT       0

#ifdef __cplusplus
}
#endif

#endif  /* CYGONCE_SERIALIO_H */
/* EOF serialio.h */