Application of LIN bus in obtaining status of four doors

The application of LIN bus in obtaining the status of four doors is mainly realized through communication between the master node and the slave node. The master node, namely the body control unit (BCM), is responsible for initiating communication with the four door LIN slave nodes and periodically querying the status of each door. The slave node is responsible for detecting the status of the door, such as whether it is closed or locked, and returning its status information to the master node through the LIN bus.