Renesas Single-Chip Microcomputer M38C89T-ADF Bedienungsanleitung PDF herunterladen (Seite 34)

Rev.1.00 May 22 2012

REJ09B0566

4-14

Library Reference

4.2.2 33BInterrupt Control Unit

R_INTC_Read

5) R_INTC_Read

Synopsis

Read an interrupt register.

Prototype bool R_INTC_Read(

uint8_t data1, // Register selection

uint8_t data2, // Register number

uint8_t * data3 // Data storage location

);

Description

Read an interrupt register and store the value.

[data1]

• The register to be read

PDL_INTC_REG_ICR or

PDL_INTC_REG_IPR or

PDL_INTC_REG_IRQRR or

PDL_INTC_REG_PIRR or

PDL_INTC_REG_PINTER or

PDL_INTC_REG_IBNR or

PDL_INTC_REG_IBCR

Select the current CPU interrupt priority level or

IRQ Control Register

IRQ Priority Register

IRQ Interrupt Request Register

PINT Interrupt Enable Register

PINT Interrupt Request Register

Bank Control Register

Bank Number Register

[data2]

The register number.

ICR: Between 0 and 3

IPR: Between 0 and 22 (16h).

IRQRR: Ignored.

PIRR: Ignored.

PINTER: Ignored.

IBCR: Ignored.

[data3]

The location where the register’s value shall be stored.

Return value

True.

Category

Interrupt control

Reference

R_INTC_Write, R_INTC_Modify

Remarks

• None.

Program example

/* PDL definitions */

#include “r_pdl_intc.h”

/* PDL device-specific definitions */

#include “r_pdl_definitions.h”

void func( void )

{

uint8_t ipl;

/* Read the IPL bits */

R_INTC_Read(

PDL_INTC_REG_IPL,

&ipl

);

}

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