UM0097 datasheet(121/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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3.10.1

Data structures

BSPI register structure

The BSPI peripheral register structure BSPI_TypeDef is defined in the file 71x_map.h as

follows:

typedef struct

{

vu16 RXR;

u16 EMPTY1;

vu16 TXR;

u16 EMPTY2;

vu16 CSR1;

u16 EMPTY3;

vu16 CSR2;

u16 EMPTY4;

vu16 CLK;

u16 EMPTY5;

} BSPI_TypeDef;

Table 57 describes the BSPI registers.

The two BSPI interfaces are declared in the same file 71x_map.h:

/* APB1 Base Address definition*/

#define APB1_BASE

0xC0000000

/* BSPI Base Address definition*/

#define BSPI0_BASE

(APB1_BASE + 0xA000)

#define BSPI1_BASE

(APB1_BASE + 0xB000)

/* BSPI peripheral pointer declaration*/

#ifndef DEBUG

...

#ifdef _BSPI0

#define BSPI0

((BSPI_TypeDef *)BSPI0_BASE)

#endif /*BSPI0*/

#ifdef _BSPI1

#define BSPI1

((BSPI_TypeDef *)BSPI1_BASE)

#endif /*BSPI1*/

...

#else /*DEBUG */

...

Table 57.

BSPI registers

Description

RXR

Receive Register

TXR

Transmit Register

CSR1

Control/Status Register 1

CSR2

Control/Status Register 2

CLK

Master Clock Divider Register

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