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User Manual for “LM068_BLE_Peri_0204” FW
2. Introduction
This document describes the functionality of the “LM068_BLE_Peri_0201” application
for LM068 adapter.
LM068 is an adapter provides standard DB9 connector for serial interface, USB mini
plugin for Powering or pin9 of DB9 connector can be used for Powering. LM068
adapter provides DTE/DCE selection Switch to switch the DTE and DCE role. LM068
adapter provides LEDs for different state indications.
This document refers the firmware LM068_BLE_Peri_0201 as “BLE adapter”.
This document provides details for
1. Firmware version history for LM068_BLE_Peri_0201 adapter firmware
2. Overview of LM068_BLE_Peri_0201 firmware
3. LED indication information
4. AT command Parser module of LM devices
5. AT commands and information
6. Firmware Upgrade procedure
The BLE adapter is configured to have GAP peripheral role. User cannot change the
GAP role of the BLE Adapter.
BLE adapter can accept connections from android, iOS or any Gap-Central device.
User can configure the adapter using AT commands before the adapter is connected
to the remote GAP-Central device, Once connected over BLE, the UART lines are
used for data transmission only. Data can be transferred in full duplex mode.
Generally, the MTU (maximum transfer unit) supported by BLE adapter is 20, i.e.
each BLE packet can send/receive maximum 20 data bytes to/from.
BLE Gap-Central
device (BLE App)
BLE-Peripheral
device
received
Tx = Data to be sent
to Gap-Central
send data to LM068
as “Write Command
wo response”
Data from LM068
adapter is shown as
“Notification packet”
Figure 1: Application scenario for LM068_BLE_Peri_0201 firmware
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