Alglaadur ESTCube-1 käsu- ja andmehaldussüsteemile ja kaameramoodulile
Date
2013
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Tartu Ülikool
Abstract
Käesoleva töö raames loodi satelliidi ESTCube-1 kahele alamsüsteemile alglaadur,mis võimaldaks nende tarkvara töö käigus uuendada.
Alglaadurit on pidevalt tarkvara uuendamiseks kasutatud, sest pärast satelliidi komplekteerimist polnud võimalik teisel viisil nende moodulite tarkvara uuendada. Viimane uuendus tehti enne satelliidi orbiidile viimist Kourous. Orbiidil olles on alglaadur alglaadinud käsu- ja andmehaldussüsteemi tarkvara. Lähitulevikus lülitatakse sisse ka kaameramoodul. Siiamaani pole orbiidil nende alamsüsteemide tarkvara uuendatud, kuid Maa peal on seda korduvalt tehtud.
Kokkuvõtvalt said töö eesmärgid täidetud ning töö lõpp-produkt on Eesti esimesel satelliidil ESTCube-1 reaalselt kasutusel.
Estonian first satellite ESTCube-1 consists of several modules. The main on-board computer Command and Data Handling System (CDHS) and Camera module (CAM) have similar micro controller units: CDHS uses STM32F1 and CAM STM32F2 series micro controllers manufactured by STMicroelectronics. The goal of this thesis is to design and implement a bootloader, which enables software upgrading for CDHS and CAM, while ESTCube-1 is orbiting Earth. So far bootloader has been used many times to upgrade firmware or to boot into the main firmware. Bootloader has also successfully booted CDHS while ESTCube-1 is on low Earth orbit. While the satellite has been orbiting Earth, there has been no firmware upgrades yet. In conclusion the goals of this thesis were achieved and the end-product is actually used on the first Estonian satellite ESTCube-1.
Estonian first satellite ESTCube-1 consists of several modules. The main on-board computer Command and Data Handling System (CDHS) and Camera module (CAM) have similar micro controller units: CDHS uses STM32F1 and CAM STM32F2 series micro controllers manufactured by STMicroelectronics. The goal of this thesis is to design and implement a bootloader, which enables software upgrading for CDHS and CAM, while ESTCube-1 is orbiting Earth. So far bootloader has been used many times to upgrade firmware or to boot into the main firmware. Bootloader has also successfully booted CDHS while ESTCube-1 is on low Earth orbit. While the satellite has been orbiting Earth, there has been no firmware upgrades yet. In conclusion the goals of this thesis were achieved and the end-product is actually used on the first Estonian satellite ESTCube-1.