UM0097 datasheet(53/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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3.4.1

Data structures

EIC register structure

The EIC peripheral register structure EIC_TypeDef is defined in the file 71x_map.h as

follows:

typedef volatile struct

{

vu32 ICR;

vu32 CICR;

vu32 CIPR;

u32 EMPTY1[3];

vu32 IVR;

vu32 FIR;

vu32 IER;

u32 EMPTY2[7];

vu32 IPR;

u32 EMPTY3[7];

u32 SIR[32];

} EIC_TypeDef;

Table 26 presents the EIC peripheral registers.

EIC peripheral is declared in the 71x_map.h file as follows:

...

/* EIC Base Address Definition */

#define EIC_BASE

0xFFFFF800

...

#ifndef DEBUG

...

#ifdef _EIC

#define EIC

((EIC_TypeDef *)EIC_BASE)

#endif /*EIC*/

...

#else

/* DEBUG */

...

#ifdef _EIC

EXT EIC_TypeDef

*EIC;

#endif /*EIC*/)

...

#endif

Table 26.

EIC peripheral registers

Description

ICR

Interrupt Control Register

CICR

Current Interrupt Channel Register

CIPR

Current Interrupt Priority Register

IVR

Interrupt Vector Register

FIR

Fast Interrupt Register

IER

Interrupt Enable Register

IPR

Interrupt Pending Register

SIR

Source Interrupt Registers

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