UM0097 datasheet(30/229 Pages) STMICROELECTRONICS

номер детали	UM0097

подробное описание детали	STR71x firmware library

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Peripheral firmware overview

UM0097

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Table 10 presents the RCCU registers.

The RCCU peripheral is declared in the same file:

...

#define RCCU_BASE

0xA0000000

...

#ifndef DEBUG

...

#ifdef _RCCU

#define RCCU

((RCCU_TypeDef *)RCCU_BASE)

#endif /*RCCU*/

...

#else

/* DEBUG */

...

#ifdef _RCCU

EXT RCCU_TypeDef

*RCCU;

#endif /*RCCU*/

...

#endif

When debug mode is used, RCCU pointer is initialized in 71x_lib.c file:

#ifdef _RCCU

RCCU = (RCCU_TypeDef *)RCCU_BASE;

#endif

In debug mode the following macro is defined in 71x_conf.h file:

●

_RCCU is defined to access the corresponding peripheral registers.

#define _RCCU

Clock divider parameters

The following enumeration defines the clock divider parameters. Clock_Div enumeration is

defined in the file 71x_rccu.h:

typedef enum

{RCCU_DEFAULT = 0x00,

RCCU_RCLK_2 = 0x01,

RCCU_RCLK_4 = 0x02,

RCCU_RCLK_8 = 0x03

} RCCU_Clock_Div;

Table 10.

RCCU registers

Description

CCR

Clock Control Register

CFR

Clock Flag Register

PLL1CR

PLL1 configuration Register

PER

Peripheral Clock Enable Register

SMR

System Mode Register

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