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#ifndef CYGONCE_MOD_REGS_SCI_H

#define CYGONCE_MOD_REGS_SCI_H

//==========================================================================

//

//      mod_regs_sci.h

//

//      Serial Communication Interface Register

//

//==========================================================================

//####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

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// for more details.

//

// You should have received a copy of the GNU General Public License along

// with eCos; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// As a special exception, if other files instantiate templates or use macros

// 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

// by itself cause the resulting work to be covered by the GNU General Public

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//

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// this file might be covered by the GNU General Public License.

//

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

//####ECOSGPLCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    yoshinori sato

// Contributors: yoshinori sato

// Date:         2002-02-19

//              

//####DESCRIPTIONEND####

//

//==========================================================================

#define CYGARC_SMR0  0xFFFFB0

#define CYGARC_BRR0  0xFFFFB1

#define CYGARC_SCR0  0xFFFFB2

#define CYGARC_TDR0  0xFFFFB3

#define CYGARC_SSR0  0xFFFFB4

#define CYGARC_RDR0  0xFFFFB5

#define CYGARC_SCMR0 0xFFFFB6

#define CYGARC_SMR1  0xFFFFB8

#define CYGARC_BRR1  0xFFFFB9

#define CYGARC_SCR1  0xFFFFBA

#define CYGARC_TDR1  0xFFFFBB

#define CYGARC_SSR1  0xFFFFBC

#define CYGARC_RDR1  0xFFFFBD

#define CYGARC_SCMR1 0xFFFFBE

#define CYGARC_SMR2  0xFFFFC0

#define CYGARC_BRR2  0xFFFFC1

#define CYGARC_SCR2  0xFFFFC2

#define CYGARC_TDR2  0xFFFFC3

#define CYGARC_SSR2  0xFFFFC4

#define CYGARC_RDR2  0xFFFFC5

#define CYGARC_SCMR2 0xFFFFC6

// Serial Mode Register

#define CYGARC_REG_SCSMR_CA             0x80 // communication mode

#define CYGARC_REG_SCSMR_CHR            0x40 // character length (7 if set)

#define CYGARC_REG_SCSMR_PE             0x20 // parity enable

#define CYGARC_REG_SCSMR_OE             0x10 // parity mode

#define CYGARC_REG_SCSMR_STOP           0x08 // stop bit length

#define CYGARC_REG_SCSMR_MP             0x04 // multiprocessor mode

#define CYGARC_REG_SCSMR_CKS1           0x02 // clock select 1

#define CYGARC_REG_SCSMR_CKS0           0x01 // clock select 0

#define CYGARC_REG_SCSMR_CKSx_MASK      0x03 // mask

// Serial Control Register

#define CYGARC_REG_SCSCR_TIE            0x80 // transmit interrupt enable

#define CYGARC_REG_SCSCR_RIE            0x40 // receive interrupt enable

#define CYGARC_REG_SCSCR_TE             0x20 // transmit enable

#define CYGARC_REG_SCSCR_RE             0x10 // receive enable

#define CYGARC_REG_SCSCR_MPIE           0x08 // multiprocessor interrupt enable

#define CYGARC_REG_SCSCR_TEIE           0x04 // transmit-end interrupt enable

#define CYGARC_REG_SCSCR_CKE1           0x02 // clock enable 1

#define CYGARC_REG_SCSCR_CKE0           0x01 // clock enable 0

// Serial Status Register

#define CYGARC_REG_SCSSR_TDRE           0x80 // transmit data register empty

#define CYGARC_REG_SCSSR_RDRF           0x40 // receive data register full

#define CYGARC_REG_SCSSR_ORER           0x20 // overrun error

#define CYGARC_REG_SCSSR_FER            0x10 // framing error

#define CYGARC_REG_SCSSR_PER            0x08 // parity error

#define CYGARC_REG_SCSSR_TEND           0x04 // transmit end

#define CYGARC_REG_SCSSR_MPB            0x02 // multiprocessor bit

#define CYGARC_REG_SCSSR_MPBT           0x01 // multiprocessor bit transfer

// When clearing the status register, always write the value:

// CYGARC_REG_SCSSR_CLEARMASK & ~bit

// to prevent other bits than the one of interest to be cleared.

#define CYGARC_REG_SCSSR_CLEARMASK      0xf8

// Baud rate values calculation, depending on peripheral clock (Pf)

// n is CKS setting (0-3)

// N = (Pf/(64*2^(2n-1)*B))-1

// With CYGARC_SCBRR_CKSx providing the values 1, 4, 16, 64 we get

//       N = (Pf/(32*_CKS*B))-1

//

// The CYGARC_SCBRR_OPTIMAL_CKS macro should compute the minimal CKS

// setting for the given baud rate and peripheral clock.

//

// The error of the CKS+count value can be computed by:

//  E(%) = ((Pf/((N+1)*B*(64^(n-1)))-1)*100 

//

#define CYGARC_SCBRR_PRESCALE(_b_) \

((((CYGHWR_HAL_H8300_PROCESSOR_SPEED/32/1/(_b_))-1)<256) ? 1 : \

 (((CYGHWR_HAL_H8300_PROCESSOR_SPEED/32/4/(_b_))-1)<256) ? 4 : \

 (((CYGHWR_HAL_H8300_PROCESSOR_SPEED/32/16/(_b_))-1)<256) ? 16 : 64)

// Add half the divisor to reduce rounding errors to .5

#define CYGARC_SCBRR_ROUNDING(_b_) \

  16*CYGARC_SCBRR_PRESCALE(_b_)*(_b_)

// These two macros provide the static values we need to stuff into the

// registers.

#define CYGARC_SCBRR_CKSx(_b_) \

    ((1 == CYGARC_SCBRR_PRESCALE(_b_)) ? 0 : \

     (4 == CYGARC_SCBRR_PRESCALE(_b_)) ? 1 : \

     (16 == CYGARC_SCBRR_PRESCALE(_b_)) ? 2 : 3)

#define CYGARC_SCBRR_N(_b_)     \

    (((_b_) < 4800) ? 0 :       \

      ((_b_) > 115200) ? 0 :    \

       (((CYGHWR_HAL_H8300_PROCESSOR_SPEED+CYGARC_SCBRR_ROUNDING(_b_))/32/CYGARC_SCBRR_PRESCALE(_b_)/(_b_))-1))

#endif