8.3.7.8.10 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