Display error message when COM port unavailable.

Signed-off-by: jdramer <jdramer@users.noreply.github.com>
Update UI to be more consitent.

Signed-off-by: jdramer <jdramer@users.noreply.github.com>
Implement the display updates.

Signed-off-by: jdramer <jdramer@users.noreply.github.com>