Satellite-borne DSP program external boot loading method and loading system

Abstract

The invention discloses a satellite-borne DSP program external boot loading method and loading system and relates to a DSP program loading technology. According to an existing DSP program loading method, a program memory must be smaller than an internal RAM memory of a DSP; and if a hardware circuit or FPGA sequential logic related to external guidance fails, the guidance process fails, the DSP cannot work, and the like, the system is formed by sequentially connecting the DSP, the FPGA andan EEPROM. Wherein three parts of secondary bootloader programs are stored in the EEPROM; the FPGA servesas the key of DSP guiding loading two-out-of-three, an SPI communication protocol is achieved, the FPGA communicates with the DSP and the EEPROM, and two-out-of-three verification is conducted on three pieces of two-stage bootloader program data in the EEPROM according to bits. According to the guiding method, the internal guiding function and the external guiding function are achieved at the sametime, faults of external guiding circuit hardware or FPGA programs are prevented, the guiding modes of the remote control instructions can be flexibly switched through the FPGA, and normal operationof the user programs is guaranteed.

Description

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AI Technical Summary

Benefits of technology

This technology helps solve problems with programming certain types of software that require larger amounts of storage space on their own computer system (SRAM). It allows for easier access by users without having to install an extra device like disk drive) while still being able to use these resources effectively. Additionally, it provides two modes - one inside-outside but outside-independent from each other – allowing for flexible switching between different guiding methods based upon factors such as how long they are running outdoors, whether there's rain at night, etc., making them more reliable even when faced with challenging weather conditions.

Problems solved by technology

The technical issue addressed by this patented innovation relates to the challenge faced during flight operations where electronic components like computer systems generate heat caused by radiations from sunlight hitting certain areas inside their housings. These issues include thermal stress induced damage and potential system crashes under extreme conditions. To address this problem, current methods involve storing duplicated data locally within each component's chip itself instead of directly accessing any other parts outside its own storage unit.

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