Panasonic Simple pulse width measurement

Chapter 3 Register Setup of Each Function
69
/* 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\