An on-orbit programming system and design method for on-board digital signal processor

Abstract

The invention discloses an on-board programming system and design method for an on-board digital signal processor. The on-board programming system is established by adopting an on-board computer, a device manager, a programmable read-only memory and a digital signal processor. The on-board programming design method disclosed by the invention realizes on-board programming of a single instruction or modifies a subprogram skip instruction to realize on-board programming of a subprogram. The on-board programming system and design method are easy to realize; the scale, complexity and robustness of original software are slightly influenced; a tedious process of repeatedly modifying an address table of the subprogram in program design, coding and debugging is avoided; and on-board modification of instructions and data in any address of a memory of the digital signal processor can be realized.

Description

technical field [0001] The invention relates to an application method of a digital signal processor in a satellite-borne signal processing system, in particular to an on-orbit programming system and a design method for a satellite-borne digital signal processor. Background technique [0002] The on-orbit programming of the on-board DSP (Digital Signal Processing) software is to inject the binary data of the executable code into the memory RAM area of ​​the on-orbit DSP through the remote control on the ground to replace the execution instructions or data of the original program. The on-orbit programming of on-board DSP software can be divided into two types according to the programming scale: one is single-instruction on-orbit programming, which directly changes a certain instruction corresponding to the DSP memory; the other is subprogram on-orbit programming, which converts a subprogram module The binary code is injected into the blank area of ​​the on-track DSP memory, an...

AI Technical Summary

Problems solved by technology

The existing technology is improved from the product hardware, and the FLASH chip is specially used for on-track programming. This can realize on-track programming simply and effectively, but it needs to increase the corresponding hardware cost and complexity, and is not suitable for single-instruction programming. in-orbit programming

In the prior art, it is also possible to establish a subroutine address table at the time of programming design, and the main program directly calls the address table to realize the program call execution, and realizes it by injecting the subroutine and modifying the entry address of the subroutine in the address table during on-track programming. On-track programming, this method does not require additional hardware, but in the process of programming, changing the subroutine code requires changing the subroutine address table, which is more complicated during debugging, and is not suitable for single-instruction on-track programming and large-scale , On-track programming of programs with many subroutines

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