Panasonic MN101CP49K User Manual

Chapter 3 Register Setup of Each Function

/* Register address declaration */

#define

TM2BC_adr

0x3F58

#define

TM2BC

(*(volatile unsigned char *)TM2BC_adr)

#define

TM2OC_adr

0x3F5A

#define

TM2OC

(*(volatile unsigned char *)TM2OC_adr)

#define

TM2MD_adr

0x3F5C

#define

TM2MD

(*(volatile unsigned char *)TM2MD_adr)

#define

CK2MD_adr

0x3F5E

#define

CK2MD

(*(volatile unsigned char *)CK2MD_adr)

/* Setting program */

CK2MD = TM2PSC;

/* Set prescaler */

TM2OC = TIME;

/* Set timer value */

TM2MD = TM2MOD | TM2PWM | TM2EN | TM2CK;

This sample is stored in the CD.

Stored directory: Sample\chapter3,4\Initial\ASM\TIMER\Sclock\

Stored directory: Sample\chapter3,4\Initial\C\TIMER\Sclock\

Simple pulse width measurement

The simple pulse width measurement uses timer count to measure the pulse width when the interrupt input

signal stays "Low". 3 timers, timers 0, 2, and 4, are available for the simple pulse width measurement.

The following section describes a sample program.

/* Control data declaration */

#define

TM0MOD

0x20

/* 0b00100000 Pulse width measurement */

#define

TM0PWM

0x00

/* 0b00000000 Timer operation */

#define

TM0EN

0x08

/* 0b00001000 Count operation */

/* Determine time for interval timer */
#define

TIME

0xFF

/* Timer count value, maximum value */

/* Register address declaration */

#define

TM0BC_adr

0x3F50

#define

TM0BC

(*(volatile unsigned char *)TM0BC_adr)

#define

TM0OC_adr

0x3F52

#define

TM0OC

(*(volatile unsigned char *)TM0OC_adr)

#define

TM0MD_adr

0x3F54

#define

TM0MD

(*(volatile unsigned char *)TM0MD_adr)

#define

CK0MD_adr

0x3F56

#define

CK0MD

(*(volatile unsigned char *)CK0MD_adr)

/* Setting program */

TM0OC = TIME;

/* Set timer value (counter clear) */

TM0MD = TM0MOD | TM0PWM | TM0EN | TM0CK;

This sample is stored in the CD.

Stored directory: Sample\chapter3,4\Initial\ASM\TIMER\PLUSE8\

Stored directory: Sample\chapter3,4\Initial\C\TIMER\PLUSE8\