57.7.8.10 Node Action

Depending on the identifier, the node is affected—or not—by the LIN response. Consequently, after sending or receiving the identifier, the USART must be configured. There are three possible configurations:

PUBLISH: the node sends the response.
SUBSCRIBE: the node receives the response.
IGNORE: the node is not concerned by the response, it does not send and does not receive the response.

This configuration is made by the LIN Node Action (NACT) field in USART LIN Mode Register (FLEX_US_LINMR).

Example: a LIN cluster that contains a host and two clients:

Data transfer from the host to client 1 and to client 2:

NACT(host) = PUBLISH

NACT(client 1) = SUBSCRIBE

NACT(client 2) = SUBSCRIBE

Data transfer from the host to client 1 only:

NACT(host) = PUBLISH

NACT(client 1) = SUBSCRIBE

NACT(client 2) = IGNORE

Data transfer from client 1 to the host:

NACT(host) = SUBSCRIBE

NACT(client 1) = PUBLISH

NACT(client 2) = IGNORE

Data transfer from client 1 to client 2:

NACT(host) = IGNORE

NACT(client 1) = PUBLISH

NACT(client 2) = SUBSCRIBE

Data transfer from client 2 to the host and to client 1:

NACT(host) = SUBSCRIBE

NACT(client 1) = SUBSCRIBE

NACT(client 2) = PUBLISH

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