Renesas Single-Chip Microcomputer M38C89T-ADF Instrukcja Użytkownika Pobierz pdf (Strona 99)

Rev.1.00 May 22 2012

REJ09B0566

4-79

Library Reference

4.2.7 Multi Function Timer Pulse Unit R_CMT_Read

4) R_CMT_Read

Synopsis

Read CMT channel status and registers.

Prototype bool R_CMT_Read(

uint8_t data1, // Channel selection

uint8_t * data2, // A pointer to the data storage location

uint16_t * data3

// A pointer to the data storage location

);

Description

Read and store the counter value and status flag.

[data1]

The channel number n (where n = 0, 1, 2 or 3).

[data2]

The compare match status flag shall be stored in the following format.

b7 – b1 b0

0: Idle

1: Compare match condition detected

[data3]

A pointer to where the counter value shall be stored. Specify PDL_NA if it is not required.

Return value

True if all parameters are valid; otherwise false.

Category

Compare Match Timer

Reference

R_CMT_Create

Remarks

• If the flag is set to 1, it shall be automatically cleared to 0 by this function.

Program example

/* PDL definitions */

#include “r_pdl_cmt.h”

/* PDL device-specific definitions */

#include “r_pdl_definitions.h”

uint8_t Flags;

uint16_t Counter;

void func(void)

{

/* Change the channel 2 values */

R_CMT_Read(

&Flags,

&Counter

);

}

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