===== BOOT =====

Use this command to know if Carberry is in bootloader context.\\
In fact, only bootloader knows the command and returns OK.\\
Application will reply ERROR.

==== Synopsis ====

  BOOT

==== Return ====

  OK

==== Example ====

Calling BOOT from bootloader context:

  BOOT
  OK

Calling BOOT from application context:

  BOOT
  ERROR - Unknown command 'BOOT'