sh3_scif.h

开放源码实时操作系统源码.

//=============================================================================
//
//      sh3_scif.h
//
//      Simple driver for the SH3 Serial Communication Interface with FIFO
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 2 or (at your option) any later version.
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// 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
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
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// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
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//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jskov
// Contributors:jskov
// Date:        2000-03-30
// Description: Simple driver for the SH Serial Communication Interface
//              The driver can be used for either the SCIF or the IRDA
//              modules (the latter can act as the former).
//              Clients of this file can configure the behavior with:
//              CYGNUM_SCIF_PORTS: number of SCI ports
//
// Note:        It should be possible to configure a channel to IRDA mode.
//              Worry about that when some board needs it.
//
//####DESCRIPTIONEND####
//
//=============================================================================

#include <pkgconf/hal.h>

#ifdef CYGNUM_HAL_SH_SH3_SCIF_PORTS

//--------------------------------------------------------------------------
// Exported functions

externC cyg_uint8 cyg_hal_plf_scif_getc(void* __ch_data);
externC void cyg_hal_plf_scif_putc(void* __ch_data, cyg_uint8 c);
void cyg_hal_plf_scif_init(int scif_index, int comm_index, 
                           int rcv_vect, cyg_uint8* base);

#ifdef CYGPRI_HAL_SH_SH3_SCIF_PRIVATE

//--------------------------------------------------------------------------
// SCIF register offsets
#define _REG_SCSMR  0x00
#define _REG_SCBRR  0x02
#define _REG_SCSCR  0x04
#define _REG_SCFTDR 0x06
#define _REG_SCSSR  0x08
#define _REG_SCFRDR 0x0a
#define _REG_SCFCR  0x0c
#define _REG_SCFDR  0x0e

//--------------------------------------------------------------------------

typedef struct {
    cyg_uint8* base;
    cyg_int32 msec_timeout;
    int isr_vector;
} channel_data_t;

//--------------------------------------------------------------------------

#if !defined(CYGSEM_HAL_VIRTUAL_VECTOR_DIAG)
// This one should only be used by old-stub compatibility code!
externC void cyg_hal_plf_scif_init_channel(channel_data_t* chan);
#warning "You should not be using anything but vv diag"
#endif

#endif // CYGPRI_HAL_SH_SH3_SCIF_PRIVATE

#endif // CYGNUM_HAL_SH_SH3_SCIF_PORTS
//-----------------------------------------------------------------------------
// end of sh3_scif.h