Vega LM-1, User Manual, Page: 24 / 29

Vega LM-1 / User Manual
24
Revision 05 – 15 April 2019
VEGA LM-1 TRACKING DEVICE RECEIVES PACKETS OF THE FOLLOWING TYPES
1. Real-time clock adjustment – send by application on LoRaWAN port 4
Size in bytes Field description
1 byte Packet type, this packet == 255
8 bytes
The value in seconds for which you need to adjust the time.
Can be positive or negative
When packet received then the device set the internal clock and the date according to
the data in that packet.
2. Packet with request of settings – sent by application on LoRaWAN port 3
Size in bytes Field description
1 byte Packet type, this packet == 1
Answering that packet, the device sends the packet with settings.
3. Packet with settings is identical to such packet from device
Size in bytes Field description Data type
1 byte Packet type, this packet == 0
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
… … …
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
The package with settings sent to the device may not contain all the settings supported
by the device, but only the part that needs to be changed.