Sending the commands for color detection return an error code 6 if they are issued before a system_wake_notify is received when the RVR is sleeping. These are the only commands I’ve found that need this notification.
This happens even though the system has responded to a power wake command. Specifically, the RVR is awake and responding to the awake request. The system_wake_notify occurs about 100 msecs are the wake response.