LoRaWAN Demonstrator (Provider) - User guide version V1.2
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6
Payload description
The applicative payload of LoRa frames is built as follows:
Note: Bit 7 is the MSB and Bit 0 is the LSB.
Byte N°
Description
1
Bit 7 = 1 : T°C info is present
Bit 6 = 1 : accelerometer was triggered
Bit 5 = 1 : BTN1 was triggered
Bit 4 = 1 : GPS info is present
Bit 3 : Up Counter is present
Bit 2 : Down Counter is present
Bit 1 = 1 : Battery voltage information is present
Bit 0 : RSSI + SNR information is present
2
Temperature in °C, sign
ed in two’s complement
3
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)
4
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)
5
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)
6
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
7
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)
8
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)
9
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)
10
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
11
Uplink frame counter
12
Downlink frame counter
13
MSB Battery voltage (in mV)
14
LSB Battery voltage (in mV)
15
RSSI (dB, absolute value)
16
SNR (dB, signed in two’s complement)