Panasonic MN103S manual Example program, Enable the interrupt

Chapter 3

Microcomputer Basics 1

■Example program

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

/*	CHECK Program for The count of the rising edge				*/
/*	which used event count operation(8-bit)				*/
/************************************************************************/
/*	Setting of Main Peripheral				*/
/*	Port 0 : Unused				*/
/*	Port 1 : Unused				*/
/*	Port 2 : Unused				*/
/*	Port 3 : Used as Timer 1 input				*/
/*	Port 4 : Used as output port				*/
/*	Port 5 : Unused				*/
/*	Port 6 : Unused				*/
/*	Port 7 : Unused				*/
/*	Port 8 : Unused				*/
/*	Timer 0 : Unused				*/
/*	Timer 1 : Used as Event count operation				*/
/*	Timer 2 : Unused				*/
/*	Timer 3 : Unused				*/
/*	Timer 8 : Unused				*/
/*	Timer 11 : Unused				*/
/*	3-phase PWM output : Unused				*/
/*	Serial interface communication 2 : Unused				*/
/*	10-bit A/D converters : Unused				*/
/*					*/
/*	Interrupt : External interrupt			Unused	*/
/*					*/
/*	2004/09		Rev 0.1		*/
/************************************************************************/
#include "sr103s92.h"
#include "int.h"
/****************************/
/*	Declaration of function */
/****************************/
void main(void);
void initialize(void);
/*	-----------------------------------------------After the assembler boot processing is completed
	control is shifted to this main routine.
void-----------------------------------------------main(void)				*/
{	initialize();			/* Initial Job */
	TM1MD	= 0x00;		/* Stop the counter */
/*-----------------------------------------------	-----------------------------------------------P4 setting
				*/
	P4OUT = 0x00;			/* Set P44 Low(VSS level) */
	P4DIR = 0x10;			/* Set P44 output */
/*-----------------------------------------------	-----------------------------------------------P3 setting
				*/
	P3MD	= 0x02;		/* Set TM1IO port */
	P3DIR = 0x00;			/* Set P31 input */
/*-----------------------------------------------	-----------------------------------------------Event count timer setting
	TM1BR	= 0x04;		/* Set the base register */
	TM1MD	= TM1MD 0x07;		/* Select the clock source to TMIN1 pin input */
	TM1MD	= TM1MD 0x40;		/* Initial timer */
	TM1MD	= TM1MD & 0xBF;		/* Set normal operation */
	G4ICR = 0x0200;			/* Set an interrupt level */
				/* Enable the interrupt */
	asm ("	or	0x0F00,PSW\n"); /* Enable the interrupt, Interrupt level 7 */

III−42 8-bit timer operation