DocID007016 Rev 2

9/11

AN1216

11

alarm_hour

= 1;

// to hold the repetition period

alarm_minute

= 49;

// for an alarm (& an interrupt on pin 26)

alarm_second

= 35;

// every 1hr 49min 35sec (for example).

// Start the Timekeeper oscillator.

*TIMEKEEPER_SEC

&= 0x7F;

// RPT4 set

*TKPER_AL_DAY

|= 0x80;

// enable IRQ request on pin40 (M48T37V/Y)

*TKPER_AL_IT

|= 0x80;

while (1)

{

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

/* read_the_port is a read of MCU I/O to detect an alarm interrupt */

/* lcd_min_display is a lcd software driver used for routine debug */

/* Those library were developed for FLASH+PSD development board.

*/

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

read_the_ports();

lcd_min_display(0,3,*TIMEKEEPER_HOUR); // display current time

lcd_min_display(0,7,*TIMEKEEPER_MIN);

lcd_min_display(0,13,*TIMEKEEPER_SEC);

if (dip_sw==0x0E)

// dip_sw is updated by read_the_port

// if detect alarm interrupt from TIMEKEEPER

{

Update_Next_Alarm(alarm_hour,alarm_minute,alarm_second);

lcd_min_display(1,3,*TKPER_AL_HOUR); // display next alarm time

lcd_min_display(1,7,*TKPER_AL_MIN);

lcd_min_display(1,13,*TKPER_AL_SEC);

}

}

}