Automotive controller and state synchronization method applied to automotive controller

Abstract

The invention discloses an automobile controller and a state synchronization method applied to an automobile controller. The automobile controller comprises a main control chip comprising an input port and an output port; a slave control chip comprising an input port and an output port; a first circuit connected with the main control chip; and a second circuit connected with the slave control chip. The first circuit and the second circuit are connected together by a sync cable. Each of the output ports is used for controlling the output voltage to cause the change of the voltage of the sync cable, when the state of the own control chip is changed. Each of the input ports is used for triggering the interrupt routine to acquire the state of the own control chip in a real-time manner, when the change of the voltage of the sync cable is detected. The main control chip and the slave control chip are respectively additionally provided with the output port and the input port, and can be used for the output control and the input monitoring of the sync cable between the above mentioned two chips, and then the interrupt routine can be triggered by the voltage falling edges of the input ports, and then the bidirectional real-time state synchronization of the main control chip and the slave control chip can be realized.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile controller and a state synchronization method applied to the automobile controller. Background technique [0002] The car controller is the core control device that realizes the functions of car starting, running, advancing and retreating, speed, and stopping. In the hardware architecture design, the main control chip and the slave control chip are mainly used for parallel control. By redundantly controlling the car's control hardware and control software Additional backup, to improve the safety of car control. Therefore, data synchronization and state synchronization between the master control chip and the slave control chip are very important. [0003] At present, the automobile controller adopts the parallel control of the main control chip and the slave control chip. The SPI (Serial Peripheral Interface, Serial Peripheral Interface) bus is generally used fo...

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a kind of automobile controller, can realize master-slave control chip two-way real-time state synchronization, can solve the problem that can not carry out two-way active state synchronization between the master-slave control chip that adopts SPI master-slave architecture

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