Dragino LDDS04, Руководство пользователя

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LDDS04 LoRaWAN 4-Channels Distance Sensor User Manual 19
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2.4 Uplink Payload
LDDS04 will uplink payload via LoRaWAN with below payload format:
Uplink payload includes in total 11 bytes.
2.4.1 Battery Info
Check the battery voltage for LDDS04.
Ex1: 0x0D4A & 0x3FFF = 3402mV
Ex2: 0x8D41 & 0x3FFF = 3393mV
2.4.2 Interrupt Pin
This bit shows if uplink packet is generated by Interrupt Pin or not. Click here for the hardware
and software set up. Note: The Internet Pin is a separate pin in the screw terminal. See pin
mapping .
Example:
(0x0D4A & 0x8000) >>15 = 0: Normal uplink packet.
(0x8D41 & 0x8000) >>15 = 1 : Interrupt Uplink Packet.
2.4.3 Distance
The measuring distance of the four distance measuring modules, the default unit is cm.
Example :
Uplink Payload: 0D 4A 03 16 03 18 03 1A 03 15 01
Data analysis:
Distance of UT sensor1 : 0316(H) = 790 (D)/10 = 79cm.
Distance of UT sensor2 : 0318(H) = 792 (D)/10 = 79.2cm.
Distance of UT sensor3 : 031A(H) = 794 (D)/10 = 79.4cm.
Distance of UT sensor4 : 0315(H) = 789 (D)/10 = 78.9cm.
Size
(bytes) 2 2 2 2 2 1
Value BAT
&
Interrupt flag
Distance of
UT sensor1 Distance of
UT sensor2 Distance of
UT sensor3 Distance of
UT sensor4 Message
Type