FPGA (Field Programmable Gate Array)-based on-orbit reconfiguration system and method for satellite on-board computer

Abstract

The invention discloses an FPGA (Field Programmable Gate Array)-based on-orbit reconfiguration system for a satellite on-board computer. The FPGA-based on-orbit reconfiguration system comprises an on-board FPGA chip, a control FPGA chip and an SPI (Serial Peripheral Interface) flash memory unit, wherein the on-board FPGA chip is internally integrated with CPU cores; the control FPGA chip is used for receiving configuration files, which are uploaded by a communication module of a satellite, for on-orbit reconfiguration, unloading the configuration files in the SPI flash memory unit, and controlling the on-orbit reconfiguration of the on-board FPGA chip; the SPI flash memory unit is used for storing the configuration files required for on-orbit reconfiguration; in the process of realizing on-orbit reconfiguration by means of running a JTAG (Joint Test Action Group) configuration mode, the control FPGA chip reads the configuration files required for the JTAG configuration mode from the SPI flash memory unit, and sends the configuration data to the on-board FPGA chip; in the process of realizing on-orbit reconfiguration by means of running an SPI configuration mode, the control FPGA chip informs the on-board FPGA chip of starting the SPI configuration mode, and the on-board FPGA chip reads the configuration files required for the SPI configuration mode from the SPI flash memory unit.

Description

technical field [0001] The invention relates to the fields of aerospace and electronic science and technology, in particular, an on-orbit reconstruction system and method for a micro-nano-satellite mission computer based on a Flash-type FPGA. Background technique [0002] With the rapid development of aerospace and electronic science and technology, low-cost, low-weight, high-functional-density micro-nano satellite technology has become a hot topic in the aerospace field. Micro-nano satellites have been widely used in many fields such as earth observation, electronic reconnaissance, communication, navigation, space science detection, space detection and new technology experiments, and have become an important part of space technology. [0003] The on-board computer (OBC) of the micro-nano satellite usually uses a single-chip microcomputer based on a central processing unit chip (CPU) combined with certain peripheral circuits to realize real-time on-board data processing (OBD...

AI Technical Summary

Problems solved by technology

Usually, the JTAG configuration port of the flash FPGA can be connected to a computer and reconfigured through the development platform software. However, once the satellite is launched, the FPGA cannot be configured using the JTAG port again.

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