Adeunis RF LoRaWAN 915 FTD, User Manual, Page: 30 / 35

LoRaWAN 915 FTD – User guide version 1.0
Page 30 / 35
4 Payload description
The payload is divided in two frames in order to comply with TOA restrictions
4.1 Frame 1
Byte N° Description
1
Bit 7 = 1 : 0
Bit 6 = 1 : accelerometer was triggered
Bit 5 = 1 : BTN1 was triggered
Bit 4 = 1 : GPS info is present
Bit 3 : 0
Bit 2 : 0
Bit 1 : 0
Bit 0 : 0
2
b[7..4]
BCD coding of the integer part of Latitude’s degrees (tens
of degrees)
b[3..0]
BCD coding of the integer part of Latitude’s degrees (units
of degrees)
3
b[7..4]
BCD coding of the integer part of Latitude’s minutes (tens
of minutes)
b[3..0]
BCD coding of the integer part of Latitude’s minutes (units
of minutes)
4
b[7..4]
BCD coding of the decimal part of Latitude’s minutes
(tenths of minutes)
b[3..0]
BCD coding of the decimal part of Latitude’s minutes
(hundredths of minutes)
5
b[7..4]
BCD coding of the decimal part of Latitude’s minutes
(thousandths of minutes)
b[3..0]
B[3..1] = unused
B0 = coding of hemisphere : 0 = North, 1 = south
6
b[7..4]
BCD coding of the integer part of Longitude’s degrees
(hundreds of degrees)
b[3..0]
BCD coding of the integer part of Longitude’s degrees
(tens of degrees)
7
b[7..4]
BCD coding of the integer part of Longitude’s degrees
(units of degrees)
b[3..0]
BCD coding of the integer part of Longitude’s minutes
(tens of minutes)
8
b[7..4]
BCD coding of the integer part of Longitude’s minutes
(units of minutes)
b[3..0]
BCD coding of the decimal part of Longitude’s minutes
(tenths of minutes)
9
b[7..4]
BCD coding of the decimal part of Longitude’s minutes
(hundredths of minutes)
b[3..0]
B[3..1] = unused
B0 = coding of hemisphere : 0 = East, 1 = West
10
b[7..4] DOP range (1-3) ** 1 = good accuracy / 3 = poor accuracy
b[3..0] Number of satellites tracked (0-15)
- Note 1 : if the accelerometer was triggered, the LinkCheckRequest that results is included in the frame (MAC payload)
- Note 2 : if no GPS coordinate is available, only the first byte is sent
- Note 3 : if no GPS coordinate is available and transmission was generated from periodic transmission mode (no BTN1,
no accelerometer), only the first byte is sent and its value will be 0x00.