Integration Guide

Confidential and Proprietary
Monarch Go-GPS-BLE Datasheet and Hardware Integration Guide, Rev 1
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2.2. Bluetooth Low Energy interface
Monarch Go-GPS BLE allows the user to send AT commands from the MCU to the product via BLE (on
top of physical UART already supported).
The product acts only as a BLE slave. It connects automatically and securely to a single master.
Just after boot, Monarch GO-GPS BLE automatically enters into an advertising mode to allow the master
to discover it.
The scanning is requested by the master and Monarch Go-GPS BLE will answer to the requested
messages. Master and slave wil then start the auto connection establishment procedure.
Monarch-Go-GPS BLE device naming convention is defined as per the following:
GM01Q-GO-GPS-BLE-<last 7 digits of serial number of the device>
o Example : GM01Q-GOGPS-BLE0002005
When the end user will have to pair his device, he will have to entre 6 digit pairing key. Digit key is
composed by the 6 last IMEI digits from the device.
Once connected, device emulates service for UART interface. Monarch Go-GPS-BLE is implementing a
BLE GATT server.
Monarch-Go-GPS BLE supports a single master: once a master is connected, the product will stop
advertising to other masters and will not accept new connections from other masters until the connected
master release the connection.
If master disconnects from slave either voluntary with an AT command or involuntary because of radio
link quality, the slave goes back to advertising mode automatically and wait for a master to discover it.