Emit state machine's state in an event/as telemetry (typing the state variable)

[Saransh-cpp]

I am trying to emit my state machine's state in an event / as a telemetry, but I can't figure out what type should I use for the variable that will be assigned the state.

My component looks like this -

module App {
    active component EventAction {
        state machine StateMachine {
            ...
        }
    state machine instance stateMachine: StateMachine 
    ...
}

I can see that the state is defined in -

namespace App {
  class EventAction_StateMachineStateMachineBase {
  ...
  enum class State : FwEnumStoreType {
        //! The uninitialized state
        __FPRIME_AC_UNINITIALIZED,
        //! The CHARGE state
        CHARGE,
        //! The COM state
        COM,
        //! The DOWNLINK state
        DOWNLINK,
        //! The MEASURE state
        MEASURE,
        //! The SAFE-CHARGE sub-state
        SAFE_SAFE_CHARGE,
        //! The SAFE-COM sub-state
        SAFE_SAFE_COM,
        //! The SAFE-DETUMBLE sub-state
        SAFE_SAFE_DETUMBLE,
      };
  ...
  }
}

What type do I use in these cases -

event MODE_CHANGE(new_mode: <?what_type_to_use_here?>) severity activity high id 0 format "Mode set to {}"
telemetry Mode: <?what_type_to_use_here?> 

[bocchino]

For now you need to construct your own FPP enumeration and write code to convert from the C++ enumeration to the FPP enumeration. We have an issue open to automatically generate the FPP enumeration: nasa/fpp#615.

[Saransh-cpp]

Thank you! That answers my question for now! :)

[SterlingPeet]

@ebenezerarunkumar since I saw #4598 go by, I wanted to comment that we have constructed mirror enumerations for our deployments. I haven't gone so far as to resurrect the fprime-extras lint project to handle ensuring this, but the thought has crossed my mind.