User's Guide

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LM074 SPP with GAP Central Application v1.1

iv. connection termination command: e.g.

“AT*DROP=00126f357215”\r\n

v. “OK” response will be provided if the string entered has valid BT

address and module is connected to the device with entered BT

address and module is in online-command mode.

vi. “Err” response will be provided if invalid BT address, invalid length

of address is provided, module is not connected to any device.

vii. AT*drop command causes the indication message to indicate the

devices are successfully disconnected.

viii. “IND*:DISCONNECTED=00126f357215” indication message is

shown to indicate the module is disconnected from the device with

BT address 0012-6f-357215.

4.6 Firmware Upgrade commands:

4.6.1 “AT*UPGRADE”\r\n

i. Execution only command.

ii. Supported in all SPP roles (dual, master-only or slave-only).

iii. The module should not be connected to BLE or any Bluetooth

device before starting the procedure.

iv. User issues this command in SPP-connected-online-command

mode to perform the OTA-firmware-upgrade.

v. User shall enter this command with password provided for

firmware upgrade. If the password is correct, then module issues

OK response and is ready for performing firmware upgrade.