Industrial Tracker Reference Guide FW 1.8 V0.2
Strategy
ID
Statc device
Moton device
(3)
Single transmission
using nettork ADR
(2).
Single random
0x01
Single transmission using a random data rate tithin
[SF7iSF12].
Dual random
0x02
Double transmissions:
First transmission using a random data rate tithin
[SF7iSF8].
Second transmission using a random data rate
tithin [SF9iSF12].
Dual fxed
0x03
Single transmission
using nettork ADR
(2).
Double transmissions:
First transmission using a random data rate tithin
[SF7iSF8].
Second transmission using a fxed data rate: SF10
(1)
Nettork ADR
0x04
Single transmission using nettork ADR
(2).
Notes
(1) Value provisioned in the device in the factory
(2) Number of retransmission and rate managed by the nettork (tith the same sequence
number)
(3) Tracker is considered in moton untl the
motion_duration
tmer expires.
for more details.
6.1.2
Confirmed uplini
The device can be confgured to request LoRa confrmatons for a collecton of uplink message types.
The parameter
confirmed_ul_bitmap
is used to select the message types that requires a
confrmaton. Only message types in the range 0x00 to 0x0F can be selected.
Example
Confrmed uplink of message types 0x0 and 0x3: bitmap = 2
0
+ 2
3
= 1 + 8 = 9.
The parameter
confirmed_ul_retrt
gives the number of retransmissions that the tracker should do in
the case there the LoRa confrmaton is not received.
A value 0 means that the uplink till request the LoRa confrmaton but till not retry in a case of a
failure.
6.2 Encoded form
Some parameters are encoded tith the folloting algorithms:
statc loat _step_size (loat
lo
, loat
hi
, unsigned
nbits
, unsigned
nresv
)
{ return 1.0/((((1 <<
nbits
) i1) i
nresv
)/(
hi
i
lo
)); }
loat mt_value_decode(uint32_t
value
, loat
lo
, loat
hi
, unsigned
nbits
, unsigned
nresv
)
{ return ((value i
nresv
/2) * _step_size(
lo
,
hi
,
nbits
,
nresv
) +
lo
);}
Where:
nbits:
number of bits used to encode.:
lo:
min value that can be encoded
hi:
max value that can be encoded
nresv
: number of reserved values, not used for the encoding.
Notes
Page 20 of 46
10th July 2019
Restricted distribution