User's Guide

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LM074 SPP with GAP Central Application v1.1

7.4 LED2

SPP Connected state:

1. LED2 (Blue LED) shall be constantly ON when the module/adapter is

connected to the remote device over a SPP connection.

2. LED2 will be constantly ON when it is connected to a remote device

while its role is slave or master.

Slave-mode:

1. When the module/adapter is in slave mode, LED2 will keep blinking

fast until the module/adapter enters into Connected state or Pairing

mode.

Master-mode:

1. When the module/adapter is not connected to a remote device and is

in master mode, LED2 will blink slowly until the module/adapter

enters into Pairing state or Connected state.

7.5 Pairing State

1. When the module/adapter is in pairing mode, LED-1 and LED2 will

keep blinking fast until pairing is completed.