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Dragino LGT-92 Series, Руководство пользователя

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Dragino LGT-92 Series Скачать руководство пользователя страница 34

 

 

www.dragino.com

 

LGT-92 LoRa GPS Tracker User Manual

 

   

34 / 36 

 

 

 

7.

 

Trouble Shooting  

7.1

 

Why I can’t join TTN in US915 /AU915 bands?   

It is about the channels mapping. Please see 

this link

 for detail.     

 

7.2

 

I see AT_ERROR when I type commands?   

When you type command, it is possible that the GPS communication conflict with TTL input so 

you see AT_ERROR. Especially the TDC time is short while GPS fix in a short period.   

 

To overcome this issue, you can: 

1)

 

Try to type the command in a txt file and paste it to the console to shorter the input time for 

command.   

2)

 

Try to run AT+FDR first to reset the device to factory default and type.   

 

 

 

Содержание LGT-92 Series

Страница 1: ...ion 2019 Feb 21 1 0 3 Add LED description Buttons correct accelerometer payload info 2019 Mar 29 1 4 0 Add LGT 92 AA board description and photo Add Software hardware change log Change Payload to add...

Страница 2: ...www dragino com LGT 92 LoRa GPS Tracker User Manual 2 36...

Страница 3: ...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...

Страница 4: ...0 6 5 Can I use Private LoRa protocol 30 6 6 How to set up LGT 92 to work in 8 channel mode in US915 AU915 CN470 bands 31 6 7 What is the pin mapping for the USB program cable 32 6 8 How to set up LGT...

Страница 5: ...Cortex M0 32 bit RISC core operating at a 32 MHz frequency a memory protection unit MPU high speed embedded memories 192 Kbytes of Flash program memory 6 Kbytes of data EEPROM and 20 Kbytes of RAM LG...

Страница 6: ...High sensitivity down to 148 dBm Bullet proof front end IIP3 12 5 dBm Excellent blocking immunity Low RX current of 10 3 mA 200 nA register retention Fully integrated synthesizer with a resolution of...

Страница 7: ...915 Open source hardware software Regular Real time GPS tracking Built in 9 axis accelerometer MPU9250 Motion sensing capability Power Monitoring Charging circuit via USB port for model LGT 92 LI 1000...

Страница 8: ...th 1000mA li on battery Enable charge circuit FPC internal LoRa Antenna Can power by USB port Real time tracking Short tracking period Rechargeable LGT 92 AA Without Enclosure With 1 5v AA type batter...

Страница 9: ...works The LGT 92 is pre loaded with a firmware and is configured as LoRaWAN OTAA Class A mode by default It has OTAA keys to join LoRaWAN network To connect a local LoRaWAN network user just need to...

Страница 10: ...ick guide to connect to LoRaWAN server OTAA Here is an example for how to join the TTN LoRaWAN Network Below is the network structure we use LG308 as LoRaWAN gateway in this example The LG308 is alrea...

Страница 11: ...www dragino com LGT 92 LoRa GPS Tracker User Manual 11 36 User can enter this key in their LoRaWAN Server portal Below is TTN screen shot Add APP EUI in the application Add APP KEY and DEV EUI...

Страница 12: ...TTN network After join success LGT92 will start to upload message to IoT server 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 LE...

Страница 13: ...4B45 04D2 FB2E Location info Latitude 06765f if 0x06765f 0x800000 0 value 0x06765f 10000 42 3519 Longitude F2960a if 0xF2960a 0x800000 1 value 0xf2960a 0x 1000000 10000 87 9094 Important note a When...

Страница 14: ...and the related field will be both filled with 0x0FFFFF Roll 04D2 if 0x04D2 0x8000 0 value 0x04D2 100 1234 12 34 degree Pitch FB2E if 0xFB2E 0x8000 1 value 0xFB2E 0x10000 100 dec 12 34 degree 2 3 2 Ad...

Страница 15: ...alarm alarm var value bytes 0 16 bytes 1 8 bytes 2 if bytes 0 0x80 value 0xFFFFFF000000 var value2 bytes 3 16 bytes 4 8 bytes 5 if bytes 3 0x80 value2 0xFFFFFF000000 if value 0x0FFFFF value2 0x0FFFFF...

Страница 16: ...t Time Interval Any 01 4 Set AT TDC Ex 0x0100012C set time to 300s 0x12C Exit alarm Any 02 2 Exit Alarm Interrupt Ex 0x0201 RESET Any 04 2 Reset Device Ex 0x04FF The FPort no fix if the payload 010000...

Страница 17: ...tton Function RESET button Press this button will reboot the device RED button See work flow When press the Alarm button Alarm flag in the payload will be set for the next 60 packets unless use downli...

Страница 18: ...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 co...

Страница 19: ...NWKID Network ID You can enter this command change only after successful network connection AT NWKSKEY Network Session Key Joining and sending date on LoRa network AT CFM Confirm Mode AT CFS Confirm...

Страница 20: ...SNR of the Last Received Packet AT VER Image Version and Frequency Band AT FDR Factory Data Reset AT PORT Application Port AT CHS Get or Set Frequency Unit Hz for Single Channel Mode AT CHE Get or Se...

Страница 21: ...pin ST LINK v2 SWCLK Dupont green pin ST LINK v2 SWDIO Dupont white pin LGT 92 power can be on or off Video Instruction is here https youtu be H 45v5 xI U Text step as below Step1 Install ST LINK driv...

Страница 22: ...will now blinking once see it blinks release the reset button on the LGT 92 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 Lin...

Страница 23: ...install MDK support and get license 1 Open the web http www2 keil com stmicroelectronics stm32 mdk 2 Download the keil 3 Login with an account that has administration rights 4 Right click the Vision...

Страница 24: ...a GPS Tracker User Manual 24 36 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...

Страница 25: ...w dragino com LGT 92 LoRa GPS Tracker User Manual 25 36 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 Finis...

Страница 26: ...36 5 2 2 Install STM32L0 Series Device 1 Open the web http www keil com dd2 pack eula container 2 Find the STMicroelectronics STM32L0 Series Device and download it 3 Find the Software Pack and install...

Страница 27: ...his error 5 2 3 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 DRA...

Страница 28: ...www dragino com LGT 92 LoRa GPS Tracker User Manual 28 36 4 If you want to change frequency modify the Preprocessor Symbols For example change EU868 to US915 5 Compile and build...

Страница 29: ...ically is 5 minutes The device can last about 19 days Please note this is an ideal case on the GPS signal strength Actually battery use time is affected by many factors as mention above 6 2 Why there...

Страница 30: ...idn t provide further software develop support on this topic 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 messa...

Страница 31: ...7 2 903 9 904 1 904 3 904 5 904 7 904 9 905 1 905 3 Channel 8 15 3 905 5 905 7 905 9 906 1 906 3 906 5 906 7 906 9 Channel 16 23 4 907 1 907 3 907 5 907 7 907 9 908 1 908 3 908 5 Channel 24 31 5 908...

Страница 32: ...8 8 919 919 2 919 4 919 6 919 8 Channel 16 23 4 920 920 2 920 4 920 6 920 8 921 921 2 921 4 Channel 24 31 5 921 6 921 8 922 922 2 922 4 922 6 922 8 923 Channel 32 39 6 923 2 923 4 923 6 923 8 924 924...

Страница 33: ...re above three keys match User can change either in TTN or Device to make then match In TTN NETSKEY and APPSKEY can be configured by user in setting page but Device Addr is generated by TTN User can a...

Страница 34: ...when I type commands When you type command it is possible that the GPS communication conflict with TTL input so you see AT_ERROR Especially the TDC time is short while GPS fix in a short period To ov...

Страница 35: ...nd 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 Support Sup...

Страница 36: ...www dragino com LGT 92 LoRa GPS Tracker User Manual 36 36 11 Reference Product Page DataSheet Image Download AT Command Manual TTN Frequency Bands...

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