UM0097 datasheet(17/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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Peripheral firmware overview

This chapter describes in detail each peripheral firmware library. The related functions are

fully documented. An example of use of the function is given and some important

considerations to take into account to avoid failure are also provided.

This chapter describes each peripheral firmware library in detail. The related functions are

fully documented. An example of use of the function is given and some important

considerations to take into account to avoid failure are also provided.

Table 3 describes peripheral firmware functions.

3.1

Power control unit (PCU)

The PCU driver may be used for a variety of purposes, including power management

configuration and low power mode selection.

The first section describes the data structures used in the PCU firmware library. The second

section presents the PCU firmware library functions.

3.1.1

Data structures

PCU register structure

The PCU register structure PCU_TypeDef is defined in the 71x_map.h file as follows:

typedef volatile struct

{

vu16 MDIVR;

u16 EMPTY1;

vu16 PDIVR;

u16 EMPTY2;

vu16 RSTR;

u16 EMPTY3;

vu16 PLL2CR;

u16 EMPTY4;

vu16 BOOTCR;

u16 EMPTY5;

Table 3.

Peripheral firmware functions

Function name

Description

Function prototype

Prototype declaration

Behavior Description

Brief explanation of how the functions are executed

Input Parameter {x}

Description of the input parameters

Output parameter {x}

Description of the output parameters

Return Value

Value returned by the function

Required Preconditions

Conditions required before calling the function

Called Functions

Other library functions called by the function

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