3.3.2 Blue Bluetooth Status LED (D2)

The Blue Bluetooth Status LED (D2) indicates Bluetooth Low Energy connection status by specific LED Flash pattern.

Standby mode:
  • No Bluetooth Low Energy connection
  • RNBD451 is in Advertisement or Scan state
  • Flash one time for every three seconds
  • ON: 50 ms, OFF: 2950 ms
Linked mode:
  • Bluetooth Low Energy ACL link is connected whether central or peripheral role
  • Flash two times for every 1.5 seconds
  • ON: 50 ms, OFF: 150 ms, ON: 50 ms, OFF: 1050 ms
Note: By default, the Bluetooth status LED is turned OFF. The user can enable this feature by using the SR command. For more details, refer to the RNBD451 Bluetooth® Low Energy Module User’s Guide (DS50003467).