AN1216

6/11

DocID007016 Rev 2

/* AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE

*/

/* PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,

*/

/* REPAIR OR CORRECTION.

*/

/*********************************************************************************/

/****************************************************************/

/*

*/

/*

This program controls the TIMEKEEPER alarm hardware so

*/

/*

as to provide the functionality of a periodic alarm.

*/

/*

*/

/****************************************************************/

#include <mcu_hc11.h>

// this was developed on HC11 platform

#include <m88xxfx.h>

// M88 Flash+PSD register map

extern volatile unsigned char dip_sw;

/*********************************************************************/

/* TIMEKEEPER memory map

*/

/* Depend on your system and your TIMEKEEPER.

*/

/* The device is M48T37V/Y series, 32kx8 non volatile SRAM, 16 clock

*/

/* alarm registers in address 7FF8h to 7FFFh

*/

/* In this example, the TIMEKEEPER was mapped from 2000h to 9FFFh

*/

/*********************************************************************/

/*

#ifndef _MEM_MAP_H

#define _MEM_MAP_H

#define

EXT_RAM_BASE (unsigned int)

0x2000

#define

TIMEKEEPER_HOUR (unsigned char *)

0x9FFB

#define

TIMEKEEPER_MIN (unsigned char *)

0x9FFA

#define

TIMEKEEPER_SEC (unsigned char *)

0x9FF9

#define

TIMEKEEPER_CAL (unsigned char *)

0x9FF8

#define

TKPER_AL_IT (unsigned char *)

0x9FF6

#define

TKPER_AL_DATE (unsigned char *)

0x9FF5

#define

TKPER_AL_HOUR (unsigned char *)

0x9FF4

#define

TKPER_AL_MIN (unsigned char *)

0x9FF3

#define

TKPER_AL_SEC (unsigned char *)

0x9FF2

#define

TKPER_FLAG (unsigned char *)

0x9FF0

#endif

*/

/**************************************************************************/

/* function Char_To_Int

*/

/* description :

This function convert the timekeeper data*/

/*

(in BCD format) to an integer.

*/

/* input :

char byte

*/

/* output :

integer

*/

/* example :

octet = 0x33

(51 in integer)

*/

/*

Char_To_Int = 33

(0x21 in hexa)

*/

/**************************************************************************/

int Char_To_Int(unsigned char octet)

{

int buffer;

buffer = (int)(octet);

if (octet <= 0x09) return(buffer);

if ((octet >= 0x10) & (octet <= 0x19)) return (buffer-6);

if ((octet >= 0x20) & (octet <= 0x29)) return (buffer-12);

if ((octet >= 0x30) & (octet <= 0x39)) return (buffer-18);