Multi-frame and frame streaming in a controller area network (CAN) with flexible data-rate (FD)

摘要

Systems and methods for multi-frame and frame streaming in a Controller Area Network (CAN) with Flexible Data-Rate (FD). In some embodiments, a method may include creating, by a device coupled to a CAN network configured to support a CAN Flexible Data-Rate (FD) protocol, a data frame comprising a field that indicates a multi-frame or streaming transmission, and transmitting the data frame in the multi-frame or streaming transmission. A CAN node may include message processing circuitry configured to receive a data frame comprising a Data Length Code (DLC) field configured to indicate multi-frame operation or streaming operation. The message processing circuitry may be further configured to receive another data frame in the absence of an arbitration process between the data frames.

主权项

1. A method, comprising:
in an automobile having a plurality of devices configured to communicate with each other over a Controller Area Network (CAN) supporting a CAN Flexible Data-Rate (FD) protocol;
creating, by a device coupled to the CAN, a data frame comprising a field that indicates a multi-frame or streaming transmission;transmitting the data frame in the multi-frame or streaming transmission as part of a flashing operation;indicating a length of a data payload portion of the data frame using the field;indicating the streaming transmission using the field, wherein an identification of the data frame is usable by a receiver as identification of additional data frames as part of the streaming transmission without intervening arbitration; andinitiating the streaming transmission, by the device, of the additional data frames, each of the additional data frames comprising a frame index portion indicating an index of a given data frame in the streaming transmission.