A dual-core data communication method for embedded numerical control system

Abstract

The invention relates to the embedded technology filed, particularly to dual-core namely the ARM and the DSP data communication method for an embedded type numerical control system. The RAM (Random Access Memory) of the embedded type numerical control system is divided into four parts namely a LINUX operating system for the ARM terminal, a BIOS pseudo operating system for the DSP terminal, communication sharing and communication softwares; the communication sharing is used for storing communication data; initialization is performed on the ARM terminal and the DSP terminal to set up a shared memory pool, set up critical section management objects which enable the ARM terminal and the DSP terminal mutually exclude read-write communication data and set up a handshake protocol; when the ARM terminal or the DSP terminal secretly accesses a shared memory area by utilizing a mutual exclusive lock and obtains the mutual exclusive lock, read-write is directly performed on the communication data, and the mutual exclusive lock is released when the read-write is achieved. According to the dual-core data communication method for the embedded type numerical control system, the hardware costs are reduced due to the fact that extra hardware chips are not used; software transportation costs are reduced due to the fact that a third-party software can be transported without modification; block data zero copy is achieved and data communication efficiency between multicores are improved due to the fact that the data transmission is achieved through communication sharing and messages between cores.

Description

technical field [0001] The invention relates to the field of embedded technology, in particular to an ARM and DSP dual-core data communication method for an embedded numerical control system. Background technique [0002] With the continuous development of electronic technology, various embedded system microprocessors such as ARM and DSP are widely used in the field of embedded system development because of their low cost, low power consumption, simple structure and stable performance. The embedded CNC system is developed by using ARM and DSP heterogeneous dual-core processors. It has the characteristics of simple hardware structure, low power consumption, high performance and low cost, and meets the market demand for high-end CNC system products. [0003] However, because ARM and DSP processors have different hardware characteristics, how to make them play their respective advantages, share different tasks, coordinate and cooperate between the dual cores, and make the overa...

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Problems solved by technology

[0004] Aiming at the above-mentioned inadequacies existing in the prior art, the present invention provides a kind of communication method applicable to the numerical control system platform of embedded ARM+DSP dual-core structure, and this method adopts the mode of directly accessing the shared memory to realize, can make full use of ARM and DSP The respective advantages of dual-core solve the problem of excessive data transmission delay in the existing dual-core communication, improve the efficiency of ARM and DSP data communication and the overall performance of the dual-core CNC system

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