Synchronization method of multi-DSP (Digital Signal Processor) embedded computer system

Abstract

The invention discloses a synchronization method of a multi-DSP (Digital Signal Processor) embedded computer system. According to the invention, role positioning for each DSP of the multi-DSP embeddedcomputer system is completed through dividing a master-slave logic relation for the multi-DSP embedded computer system, the reasonable framework and reasonable workflow design of the system are ensured, the coordination of a control function and an operation function in a system algorithm flow can be realized in an optimal manner, and the operation efficiency of the system is improved. With the support of the logic framework and hardware design, a specific method supporting software synchronization of the multi-DSP embedded computer system is realized. All slave DSPs sends a handshake signalto the master DSP through a Flag I / O after completing the preposition work, the master DSP receives the handshake signals of all slave DSPs and then sends a unified execution command to all slave DSPs, thereby realizing synchronization and simultaneous operation of the multiple DSPs.

Description

technical field [0001] The invention belongs to the field of embedded computer system design, in particular to a method for synchronizing a multi-DSP embedded computer system. Background technique [0002] Digital signal processor (DSP) is very suitable for computing-intensive occasions and fields such as digital signal processing, image processing and communication information processing with its rich dedicated hardware circuit resources and long pipeline design architecture. Although DSP has high signal processing performance, with various complex application scenarios (such as multimedia video signal processing, satellite signal processing, radar signal processing, etc.) The processing power of a single DSP chip has been difficult to meet the system application requirements, which requires the use of multiple DSP chips to build a multi-DSP embedded computer system, through the work of multiple DSP processors, to complete the real-time processing of the target digital sign...

AI Technical Summary

Problems solved by technology

[0003] In some actual calculations, it is strictly required that multiple DSP processors must perform their respective algorithmic tasks in a simultaneous and synchronous manner, otherwise, it may result in a reduction in the efficiency of collaborative calculations, and may also cause serious problems in calculations. inaccurate

Because different DSPs need to perform pre-work such as power-on bootstrap, initialization, and self-test before executing the target algorithm task, these pre-works will be different for different DSPs, and different DSPs are running the same program There will also be a slight time deviation in the software, so without synchronous control, it is impossible for multiple DSPs to complete the pre-work at the same time, and then it is impossible to achieve the goal of executing algorithm tasks at the same time