ref: fdc89f1a20889c0295534f58dc2e82ce8c55a18b
doc/bootloader/upgrade.puml
@startuml MCU -> Bootloader: reset activate Bootloader Bootloader -> Bootloader: Recover? (no) Bootloader -> Bootloader: New version? (yes) Bootloader -> Bootloader: Swap firmwares note left: Copy current firmware from primary to secondary\nand copy the new firmware from secondary to primary Bootloader -> Application: Jump to primary slot deactivate Bootloader activate Application note right: This is the new version of the firmware Application -> Application: Write the valid bit in flash memory note right: The application should provide a way to\ncheck that it is running correctly\n(selftest, user confirmation,...)\nbefore setting the valid bit. Application -> Application: Normal operations... Application -> MCU: Reset deactivate Application @enduml