Message filtering method and device and electronic equipment

Abstract

The invention provides a message filtering method and device and electronic equipment, and the method comprises the steps: receiving a message; Splitting a sequence corresponding to the message identifier of the message into a first sequence and a second sequence; Inquiring a truth table corresponding to the first sequence to obtain a value corresponding to the first sequence, and inquiring a truth table corresponding to the second sequence to obtain a value corresponding to the second sequence; And carrying out bitwise calculation on the value corresponding to the first sequence and the valuecorresponding to the second sequence, and if the bitwise calculation result is equal to the second sequence, processing the message. According to the message processing method and device, whether thereceived message is processed or not can be rapidly determined according to the message ID, so that the effect of software filtering can be achieved, hardware filtering is not needed, and the filtering efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of bus communication, in particular to a message filtering method, device and electronic equipment. Background technique [0002] With the rapid development of the automobile industry, the functional design requirements of automobiles are increasing, and more and more electronic units are applied to automobiles. All kinds of electronic control units on the car are all linked to the bus, and the signals and data that need to be exchanged are sent and received through the bus. Among them, the more commonly used vehicle bus type is a controller area network (Controller Area Network; hereinafter referred to as: CAN) bus. [0003] Various electronic control units on the car are connected to the CAN bus through an external CAN transceiver, and the electronic control unit cooperates with the CAN transceiver through the internal CAN controller to send and receive CAN bus messages on the CAN bus. The CAN ...

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Problems solved by technology

[0005] But above-mentioned method, after receiving CAN bus message, at first through the mode of hardware filter, then put into the message buffer device with the number corresponding to message ID, hardware filter mode has increased the limitation of use of this method property, if the message IDs of the CAN bus messages that need to be processed are many and irregular, then there is a situation that the hardware filter load is heavy and cannot be processed; in addition, when the above method traverses and compares the determined ID information subset, if If the determined ID information subset contains more content, the number of traversal comparisons will be more, and the filtering efficiency will be lower.

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