@startuml Information_Popup

    participant TD                  as TD
    participant SW                  as SW
    participant UI                  as UI
    actor       USER                as US

    'Possible actions and interaction types
    ' External on CANBus
    ' TD -> SW: MSG: Message
    ' SW -> TD: MSG: Message

    ' Internal to the application
    ' XX -> YY: CMD: Command
    ' XX -> XX: ACT: Action

    ' External on OS/FS
    ' SW -> Script: ACT: Command
    ' Script -> OS: CMD: Command
    ' Script -> SW: MSG: Message
    ' OS -> Script: MSG: Message

    ' US -> UI: User actions are:
    '   ASK: Display a <message>
    '   ENT: User enters a value or string
    '   TCH: User touches a button (RadioButton, CheckBox, ...)
    '   SCL: User scrolls a flip-able area

    == Navigate to popup ==
    US -> UI: TCH: Press information headerbar icon button
    UI -> UI: ACT: Information Popup is displayed

    == QR Code ==
    UI -> UI: ACT: Generate QR Code for electronic instructions for use (eIFU)
    US -> UI: ACT: Scan QR Code on mobile device to view eIFU

    == Versions ==
    UI -> SW: ACT: Request version information for bound properties  \
                \n\tOS Version                  \
                \n\tUI Version                  \
                \n\tTD Version                  \
                \n\tTD FPGA Version             \
                \n\tTD Serial Number            \
                \n\tDD Version                  \
                \n\tDD FPGA Version             \
                \n\tDD Serial Number            \

    SW -> SW: ACT: Retrieve SW versions:            \
                \n\tGet OS Version from POST log    \
                \n\tRead UI Version                 \

    SW -> TD: MSG: [x15: #1] TD Versions Request
    TD -> SW: MSG: [x0E: #9] \nTD versions data:\n \
                    \n\t(U8) mTDMajor           \
                    \n\t(U8) mTDMinor           \
                    \n\t(U8) mTDMicro           \
                    \n\t(U16)mTDBuild           \
                    \n\t(U8) mTDFPGAId          \
                    \n\t(U8) mTDFPGAMajor       \
                    \n\t(U8) mTDFPGAMinor       \
                    \n\t(U8) mTDFPGALab         \
                    \n\t(U12)mCompatibilityRev  \

    SW -> UI: MSG: Version Data:                \
                \n\tOS Version                  \
                \n\tUI Version                  \
                \n\tTD Version                  \
                \n\tTD FPGA Version             \
                \n\tTD Serial Number            \
                \n\tDD Version                  \
                \n\tDD FPGA Version             \
                \n\tDD Serial Number            \

    UI -> US: DSP: Display version information to user

@enduml