AN1278 datasheet(21/44 Pages) STMICROELECTRONICS

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LIN (LOCAL INTERCONNECT NETWORK) SOLUTIONS

event to the application, one of the 3 notification functions is called. These functions are deliv-

ered empty and by expanding them the user is able to fully define his application LIN commu-

nication. The 3 functions correspond to the 3 kinds of events:

Function

uByte * DataRequest_Notification(@tiny t_header *header)

Parameters

pointer to a variable of type t_header

Return value

pointer to an array

Description

This function is called on reception of a LIN header which requests data

i.e. which is defined in the ID_Table with the qualifier

“ID_DATAREQUEST”. The function passes the received header as a

pointer. The user has to complete this function and return a pointer to the

array containing the data to be sent.

Note: The data bytes are buffered by the LIN software just after this func-

tion call so that the user does not have to handle data sharing between

the application and the LIN software.

Function

void DataReceived_Notification(@tiny t_header *header, @tiny

t_response *response)

Parameters

pointer to a variable of type t_header, pointer to a variable of type

t_response

Return value

none

Description

This function is called upon the reception of a LIN header and response

which was sent by the master to the application i.e. which is defined in the

ID_Table with the qualifier“ID_DATASENT”. The function passes the re-

ceived header and response as a pointer. The user has to complete this

function to handle the received data.

Function

void Error_Notification(t_error error_code)

Parameters

variable of type t_error

Return value

none

Description

This function is called upon the detection of an error. The function passes

the type of error (See t_error type definition in 3.2.1 Type definition). The

user has to complete this function if special action has to be taken in case

of errors.

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