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oeeprom_spi.h

/* 
Object Oriented Mobile Robot Model (OOMRM) C++  Library Copyright (C) 2002-2005  Derek Jones

This library is free software; you can redistribute it  and/or
modify it under the terms of the GNU Lesser General Public
License  as published by the Free Software Foundation; either
version 2.1 of the  License, or (at your option) any later version.

This library 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
Lesser General Public License for more  details.

You should have received a copy of the GNU Lesser General  Public
License along with this library; if not, write to the Free  Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307  USA

$Id: oeeprom_spi.h,v 1.1.1.1 2006/05/11 05:22:41 derek Exp $ 
*/

#ifndef _SPI_EEPROM_256
#define _SPI_EEPROM_256
#include <hardware/ospi.h>

/* 
1 = CS
2 = SO
3 = WP   (high)
4 = GND
5 = SI
6 = SCK 
7 = HOLD (high; low to suspend)
8 = VCC

MRM board
to 
1 = GND
2 = VCC
3 = MISO
4 = MOSI
5 = SCK
6 = PCS
7 = I/O PORT_F 3 for CS0-1; PORT_F 1 for CS2-3
8 = IRQ PORT F 4 for CS0-1; PORT F 2 for CS2-3 

CONVERTER EEPROM->MRM HEADER = { 4, 8, 2, 5, 6, 1, WP(3), HOLD(7) }


NOTES: will bypass (leave open) pin 7/8 of MRM as I'm using these for other things.
       will connect to EEPROM header and simply tie pins 7/8 high (no write protect/no suspend operations).
*/
// Valid OP-CODES for AT25HP256/512 EEPROM
//enum EEPROM_COMMAND { NOOP=0, WRSR, WRITE, READ, WRDI, RDSR, WREN }; 

typedef union {
    struct {
        uint8 WPEN:1;
        uint8 UNUSED:3;
        uint8 BP1:1;
        uint8 BP0:1;
        uint8 WEN:1;
        uint8 RDY:1;
    } BITS;
    uint8 FULLWORD;
} RDSR_T;


class oEEPROM_SPI : oSPI
{
public:
  oEEPROM_SPI(IOLINE cs);       
  void read(word address,word rxdata[]); 
  void write(word address, uint8 content); 
private:
};
#endif

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