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LGT-92 LoRa GPS Tracker User Manual 3 / 36
1. Introduction..............................................................................................................................5
1.1 What is LGT-92 LoRa GPS Tracker ..............................................................................................5
1.2 Specifications..............................................................................................................................6
1.3 Features......................................................................................................................................7
1.4 Applications................................................................................................................................7
1.5 Hardware Changelog .................................................................................................................7
1.6 Variants ......................................................................................................................................8
2. Use LGT-92 with stock LoRaWAN firmware ...............................................................................9
2.1 How it works?.............................................................................................................................9
2.2 Quick guide to connect to LoRaWAN server (OTAA) .................................................................10
2.3 Uplink Payload..........................................................................................................................13
2.3.1 Payload Analyze ..............................................................................................................13
2.3.2 Add Payload format in TTN .............................................................................................14
2.4 Downlink Payload.....................................................................................................................16
2.5 LED Status.................................................................................................................................16
2.6 Button Function........................................................................................................................17
2.7 Firmware Change Log...............................................................................................................17
3. Use AT Command....................................................................................................................18
3.1 Access AT Command.................................................................................................................18
3.2 Common AT Command Sequence.............................................................................................20
3.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ......................................................20
3.2.2 Single-channel ABP mode (Use with LG01/LG02)...........................................................20
4. Upload Firmware ....................................................................................................................21
5. Developer Guide .....................................................................................................................23
5.1 Source Code..............................................................................................................................23
5.2 Compile Source Code ................................................................................................................23
5.2.1 Set up Keil compile environment....................................................................................23
5.2.2 Install STM32L0 Series Device.........................................................................................26
5.2.3 Compile Source Code......................................................................................................27
6. FAQ .........................................................................................................................................29
