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21 lines
763 B
Plaintext
21 lines
763 B
Plaintext
@startuml
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MCU -> Bootloader: reset
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activate Bootloader
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Bootloader -> Bootloader: Recover? (no)
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Bootloader -> Bootloader: New version? (yes)
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Bootloader -> Bootloader: Swap firmwares
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note left: Copy current firmware from primary to secondary\nand copy the new firmware from secondary to primary
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Bootloader -> Application: Jump to primary slot
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deactivate Bootloader
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activate Application
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note right: This is the new version of the firmware
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Application -> Application: Write the valid bit in flash memory
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note right: The application should provide a way to\ncheck that it is running correctly\n(selftest, user confirmation,...)\nbefore setting the valid bit.
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Application -> Application: Normal operations...
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Application -> MCU: Reset
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deactivate Application
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@enduml |