UM0097 datasheet(13/229 Pages) STMICROELECTRONICS

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UM0097

Firmware library

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Figure 2 shows the firmware library architecture and file inclusion relationships.

Figure 2.

Firmware library file structure

For each peripheral a source code file 71x_ppp.c and a header file 71x_ppp.h are provided.

●

the 71x_ppp.c file contains all the firmware functions required to use the peripheral

●

the 71x_ppp.h file contains all the functions prototypes, data structures, data types and

enumeration needed. It contains also the inline functions code, if any.

71x_it.c

Peripheral interrupt functions file. It is modified by you by including the interrupt

functions code used in your application. In case of multiple interrupt requests mapped

on the same interrupt vector, the function performs a polling on interrupt flags

contained inside the peripheral in order to establish the exact source of the interrupt.

The names of these functions are already provided in the firmware library.

71x_it.h

Header file including the definition of interrupt functions.

71x_lib.c

Debug mode initialization file. It includes the definition of variable pointers pointing

each one to the first address of the dedicated peripheral and the definition of one

function called when you choose to enter in debug mode. This function initializes the

defined pointers.

71x_lib.h

Header file including all the peripherals’ header files. It is the unique file to be included

in the user application to interface with the library.

71x_map.h

This file implements memory mapping and physical registers address definition for

both development and debug modes. This file is supplied with all peripherals.

71x_type.h

Common declarations file. It includes common types and constants which are used by

all peripheral drivers.

71x_ppp.c

Driver source code file of the PPP peripheral written in C language.

71x_ppp.h

Header file of the PPP peripheral. It includes the functions prototypes, data structures

and enumerations used by the driver and also available for the user.

Table 2.

Source/header file list (continued)

Filename

Description

Software Layer

Hardware Layer

Application Layer

application.c

71x_it.c

71x_lib.h

71x_map.h

ppp.h

Peripheral X

71x_lib.c

71x_type.h

71x_it.h

ppp.c

71x_conf.h

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