Adding sensible error messages when susi crashes

[sansyrox]

Is your feature request related to a problem? Please describe.

Currently, SUSI only sends out one error message when it crashes.

Describe the solution you'd like

Different error messages depending on the issue.

Additional context

Only changes in the state machine required.

[norbusan]

When SUSI crashes, you mean the susi_linux process? But when it crashes, how could it give sensible messages? Ok, we could create a state file, clean it up on proper shutdown, and when systemd restarts the susi_linux process and it finds the state file, it could tell the user that susi linux has crashed, but how do you intend to get details?

[sansyrox]

@norbusan , I meant for example when there is an issue with the internet connection or it is a problem with deploying Java server on the Pi . These errors are handled in the error_state file. But only one kind of sound played when it enters the error state.
Instead of that, we should play different sounds for easier debugging.

[norbusan]

Ok, so you mean for TTS or STT, when the connection timed out.
What about problems communicating with the onboard susi_server, can we detect that, too?

[sansyrox]

@norbusan , yes we handle those too. I think we log the errors somewhere as of now.