uint64 timestamp     # time since system start (microseconds)
uint8 firmware       # ESC firmware type (see ESC_FIRMWARE enum in MAVLink)
uint8 index          # Index of the ESC (0 = ESC1, 1 = ESC2, etc.)
uint16 length        # Length of valid data
uint8[192] data      # Raw ESC EEPROM data

uint8 ORB_QUEUE_LENGTH = 8 # To support 8 queued up responses