Dragino LGT-92 User Manual
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Dragino LGT-92 User Manual

Lorawan
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LGT-92 LoRaWAN GPS Tracker User Manual
Document Version: 1.5.5
Image Version: v1.5.3
Version
Description
1.0
Release
1.0.1
Correct GPS payload format in TTN
1.0.2
Add more info for 8-Channel Mode Description
1.0.3
Add LED description, Buttons, correct accelerometer payload info
1.4.0
Add LGT-92-AA board description and photo
Add Software/hardware change log
Change Payload to add Alarm flag
1.4.1
Correct payload format
More description on the Payload
1.4.2
FAQ:AT_ERROR, Battery Percentage info, FAQ for battery lift time, Video
instruction for single channel mode.
1.4.3
Improve description of Alarm button and Downlink ,
1.4.4
Add v1.4 hardware changelog, add USB port functions.
LGT-92 LoRa GPS Tracker User Manual
www.dragino.com
Date
2018-Dec-12
2019-Jan-23
2019-Feb-21
2019-Mar-29
2019-May-11
2019-May-14
2019-Jun-17
2019-Jul-22
1 / 40

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Summary of Contents for Dragino LGT-92

  • Page 1 LGT-92 LoRaWAN GPS Tracker User Manual Document Version: 1.5.5 Image Version: v1.5.3 Version Description Date Release 2018-Dec-12 1.0.1 Correct GPS payload format in TTN 2019-Jan-23 1.0.2 Add more info for 8-Channel Mode Description 2019-Feb-21 1.0.3 Add LED description, Buttons, correct accelerometer payload info 2019-Mar-29 1.4.0...
  • Page 2 Fix work flow error. Add new downlink payload in 1.5 2019-Nov-29 1.5.3 Modify description of Alarm Button 2019-Dec-12 1.5.4 Add hardware change v1.5. Firmware update to v1.5.3 2020-Jan-18 1.5.5 Add trouble shooting for upload firmware fail 2020-Feb-01 LGT-92 LoRa GPS Tracker User Manual 2 / 40...

  • Page 3: Table Of Contents

    Introduction ..........................5 What is LGT-92 LoRa GPS Tracker ....................5 Specifications ..........................6 Features ............................7 Applications ..........................7 Hardware Changelog ......................... 7 Variants ............................9 Use LGT-92 with stock LoRaWAN firmware ................10 How it works? ........................... 10 Quick guide to connect to LoRaWAN server (OTAA) ..............
  • Page 4 How to change the LoRa Frequency Bands/Region? ..............33 Can I use Private LoRa protocol? ....................33 How to set up LGT-92 to work in 8 channel mode in US915, AU915, CN470 bands? ....34 What is the pin mapping for the USB program cable? ............. 35 How to set up LGT-92 to work with Single Channel Gateway such as LG01/LG02? ....

  • Page 5: Introduction

    1. Introduction What is LGT-92 LoRa GPS Tracker LGT-92 is a Long Range / low power consumption LoRaWAN GPS tracker. LGT-92 gets user’s location info via GPS and sends it to IoT server via LoRaWAN wireless network. Compare to traditional GPS trackers (base on GPRS or Cellular network), LGT-92 use...

  • Page 6: Specifications

    Battery:  1000mA Li-on Battery power (for model LGT-92-LI)  2 x AA battery holder for 1.5v AA battery power (for model LGT-92-AA) Power Consumption  Sleeping Mode: 77uA (for model LGT-92-LI), 17uA (for model LGT-92-AA) LGT-92 LoRa GPS Tracker User Manual...

  • Page 7: Features

     Charging circuit via USB port (for model LGT-92-LI)  1000mA Li-on Battery power (for model LGT-92-LI)  2 x AA battery holder for 1.5v AA battery (for model LGT-92-AA)  Tri-color LED, Alarm button Applications  Logistics and Supply Chain Management ...
  • Page 8 LGT-92 LoRa GPS Tracker User Manual 8 / 40...

  • Page 9: Variants

    --Without Enclosure --Asset tracking --With (1.5v) AA type battery --Long tracking period holder, no battery. --None-rechargeable --Disable charge circuit --Sticker LoRa Antenna --Can’t powered by USB port for hardware version < 1.3 LGT-92 LoRa GPS Tracker User Manual 9 / 40...

  • Page 10: Use Lgt-92 With Stock Lorawan Firmware

    It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the LoRaWAN IoT server and power on the LGT-92. It will auto join the network via OTAA.
  • Page 11 . What the rest need to is register this device in TTN: Step 1: Create a device in TTN with the OTAA keys from LGT-92. Each LGT-92 is shipped with a sticker with the default device EUI as below: LGT-92 LoRa GPS Tracker User Manual 11 / 40...
  • Page 12 Input these keys to their LoRaWAN Server portal. Below is TTN screen shot: Add APP EUI in the application Add APP KEY and DEV EUI LGT-92 LoRa GPS Tracker User Manual 12 / 40...
  • Page 13 For firmware v1.4: By default, the upload period is 5 minutes. In the start of each period, LGT-92 will try to get GPS signal and the green LED will blink. Once LGT-92 get the GPS info, it will upload a LoRa message include battery / GPS info/ X,Y axis info.

  • Page 14: Uplink Payload

    Alarm & BAT: Size(bit) 1 bit 1bit 14 bits Value reserve Alarm Indicate FLAG: Size(bit) 2 bits 1bit 5 bits Value Firmware version Example: Payload: 0x02863D68 FAC29BAF 4B45 60 04D2 FB2E LGT-92 LoRa GPS Tracker User Manual 14 / 40...
  • Page 15  3.70v ~ 3.84v: 40% ~ 60%  3.40v ~ 3.69v: 20% ~ 40%  < 3.39v: 0~20%  Movement Detection mode: -- 0x00: Disable Movement detect feature, uplink interval is same as TDC time LGT-92 LoRa GPS Tracker User Manual 15 / 40...

  • Page 16: Add Payload Format In Ttn

    In TTN, use can add a custom payload so it shows friendly. In the page Applications --> Payload Formats --> Custom --> decoder Add the decoder from this link: LGT92-v1.5.0_decoder_20191128.txt http://www.dragino.com/downloads/index.php?dir=LGT_92/Decoder/ Save the change the uplink message will be parsed. As below: LGT-92 LoRa GPS Tracker User Manual 16 / 40...
  • Page 17 LGT-92 LoRa GPS Tracker User Manual 17 / 40...

  • Page 18: Downlink Payload

    Power On GREEN led on 2 seconds Join request BLUE led fast blink once (200ms) Join Success Purple led on 1 second Fixing Location GREEN blinks 200ms per second LGT-92 LoRa GPS Tracker User Manual 18 / 40...

  • Page 19: Button Function

    GPS fix info. After that, the device will send 60 packets with 1 minute interval. The Alarm flag in the payload will be set for the next 60 packets unless use downlink to exit the Alarm mode. USB Port Function The USB interface of LGT-92 has below functions:  Power on the device ...

  • Page 20: Use At Command

    3. Use AT Command Access AT Command LGT-92 supports AT Command set in stock firmware. User can use a USB to TTL adapter to connect to LGT-92 for using AT command, as below. In PC, User needs to set serial tool baud rate to 9600 to access serial console for LGT-92.
  • Page 21 LGT-92 LoRa GPS Tracker User Manual 21 / 40...
  • Page 22 AT+CLASS: LoRa Class(Currently only support class A AT+DCS: Duty Cycle Setting AT+DR: Data Rate (Can Only be Modified after ADR=0) AT+FCD: Frame Counter Downlink AT+FCU: Frame Counter Uplink AT+JN1DL: Join Accept Delay1 LGT-92 LoRa GPS Tracker User Manual 22 / 40...

  • Page 23: Common At Command Sequence

    3.2.1 Multi-channel ABP mode (Use with SX1301/LG308) If device has not joined network via OTAA: AT+FDR AT+NJM=0 If device already joined network: AT+NJM=0 3.2.2 Single-channel ABP mode (Use with LG01/LG02) See this link LGT-92 LoRa GPS Tracker User Manual 23 / 40...

  • Page 24: Upload Firmware

    4. Upload Firmware User can use the LGT-92’s USB port to upgrade firmware into it. The hardware connection for upgrade firmware is as below: Connection:  ST-LINK v2 5.0v <--> Dupont red pin  ST-LINK v2 GND <--> Dupont black pin ...
  • Page 25 Step6: The led on the ST-LINK adapter will now blinking, once see it blinks; release the reset button on the LGT-92. The ST-Link utility will pop up a download window. Click the start button to download the image to LGT-92.

  • Page 26: Developer Guide

    5: Open the dialog File — License Management... and select the Single-User License tab. 6: Click the button Get LIC via Internet..., then click the button OK to register the product. This action opens the License Management page on the Keil web site. LGT-92 LoRa GPS Tracker User Manual 26 / 40...
  • Page 27 7: Enter the Product Serial Number 4PPFW-QBEHZ-M0D5M along with your contact information and click the button Submit. An e-mail is sent back with the License ID Code (LIC) within a few minutes. LGT-92 LoRa GPS Tracker User Manual 27 / 40...
  • Page 28 8:To activate the Software Product, enter the LIC in the field New License ID Code (LIC) of the dialog License Management... and click Add LIC. 9:Finish LGT-92 LoRa GPS Tracker User Manual 28 / 40...

  • Page 29: Install Stm32L0 Series Device

    5.2.2 Install STM32L0 Series Device https://www.keil.com/dd2/pack/#/eula-container 1:Open the web: 2:Find the STMicroelectronics STM32L0 Series Device and download it; 3:Find the Software Pack and installs it; 4:Add the Device ,then you can rebuild the project. LGT-92 LoRa GPS Tracker User Manual 29 / 40...

  • Page 30: Compile Source Code

    1. Download the source code from Software Source Code Download Link. 2. Use Keil to open the project file: STM32CubeExpansion_LRWAN/Projects/Multi/Applications/LoRa/DRAGINO-LRWAN(AT)/MD K-ARM/STM32L072CZ-Nucleo/Lora.uvprojx 3. In Keil, you can see what frequency band the code support. LGT-92 LoRa GPS Tracker User Manual 30 / 40...
  • Page 31 4. If you want to change frequency, modify the Preprocessor Symbols. For example, change EU868 to US915 5. Compile and build LGT-92 LoRa GPS Tracker User Manual 31 / 40...

  • Page 32: Faq

    150 seconds to try to get GPS fix and final it will fix fail. If the lgt-92 is placed outdoor, it will normally take less than 10 seconds after the first fix.

  • Page 33: How To Change The Lora Frequency Bands/Region

    In this demo, we will show the communication between LoRa Shield and LGT-92, both of them use the basic LoRa library. LGT-92 will send a message to LoRa Shield and LoRa Shield will print it to the console.

  • Page 34: How To Set Up Lgt-92 To Work In 8 Channel Mode In Us915, Au915, Cn470 Bands

    How to set up LGT-92 to work in 8 channel mode in US915, AU915, CN470 band By default, the frequency bands US915, AU915, CN470 works in 72 frequencies. Many gateways are 8 channel gateways, in such case, the OTAA joined time and uplink schedule is...

  • Page 35: What Is The Pin Mapping For The Usb Program Cable

    915.9 917.5 919.1 920.7 922.3 923.9 925.5 927.1 Channel 64-71 What is the pin mapping for the USB program cable? Color USB Pin UART pin ST-Link Pin White D- (N/A) LGT-RXD SWDIO Green D+(N/A) LGT-TXD SWCLK ID (N/A) Black LGT-92 LoRa GPS Tracker User Manual 35 / 40...

  • Page 36: How To Set Up Lgt-92 To Work With Single Channel Gateway Such As Lg01/Lg02

    How to set up LGT-92 to work with Single Channel Gateway such as LG01/LG02? In this case, users need to set LGT-92 to work in ABP mode & transmit in only one frequency. Assume we have a LG02 working in the frequency 868400000 now, below is the steps. (Video Instruction: https://youtu.be/32eLnlYoLoI...

  • Page 37: Trouble Shooting

    2) Try to run AT+FDR first to reset the device to factory default and type. Why I am getting Empty payload? The LGT-92 payload if include motion sensor will have 15 bytes, according to the LoRaWAN protocol. The LoRaWAN server will discard this payload on DR0 in AU915/US915 bands. So each packet sent in DR0 will be seen as empty payload User can set the payload to 8 bytes by use the AT Command AT+SGM=1 to disable motion sensor.

  • Page 38: I Can't Upload Firmware Via My St-Link V2

    3.3v on pin 1/2 and the clone one has 3.3v on pin 1/2. User has to short pin19 (VDD 3.3v) and pin 1/2 (TVCC) for the original one so pin 1/2 has 3.3v power. Otherwise, the original one will have problem to upload firmware to LHT65. LGT-92 LoRa GPS Tracker User Manual 38 / 40...

  • Page 39: Order Info

     CN470: LoRaWAN CN470 band 9. Packing Info Package Includes:  LGT-92 LoRa GPS Tracker x 1  USB recharge & program cable x 1 Dimension and weight:  Device Size: 85 x 48 x 15 cm  Device Weight: 50g 10.

  • Page 40: Reference

    11. Reference  Product Page DataSheet  Image Download  AT Command Manual  TTN Frequency Bands LGT-92 LoRa GPS Tracker User Manual 40 / 40...

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