Backboard auto-negotiation method, system and device and readable storage medium

Abstract

The invention discloses a backboard auto-negotiation method, system and device and a readable storage medium. The method comprises the steps that an MCU responds to a backboard auto-negotiation instruction distributed by a central processing unit and executes a state change event corresponding to the backboard auto-negotiation instruction; based on the current state information of the AN module and the LT module, indexing and executing a preset processing flow of the AN module and the LT module until both the AN module and the LT module jump to a complete state or both the AN module and the LT module jump to an idle state; and when both the AN module and the LT module jump to the completion state, reporting the negotiated transmission parameter to the central processing unit, so that the central processing unit switches the transmission rate of the port to be negotiated based on the transmission parameter. Compared with the prior art, the method has the advantages that CPU (central processing unit) resources are saved, the processing and response speed is increased, and the real-time performance of auto-negotiation is improved; codes with different functions are decoupled from codes with other functions, so that cohesion of the codes is facilitated, various complex situations can be covered, and the controllability of a processing flow is improved.

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