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EOS Radar LPWAN Binary Payload

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Payload Overview

Feature Value
Payload Type LPWAN binary payload for telemetry data
Total size 24 bytes
Byte Order Big-endian for multi-byte values
Compile Condition The encoder is used when CONFIG_SENTOS_HAS_NRF_CLOUD_SERVICE is disabled
Structure 3-byte Sentigram telemetry header followed by EOS telemetry fields

LPWAN Binary Payload - 24 Bytes

Byte offset Size Field Type Encoding / Scaling Description
0 1 variant_msb uint8 High byte of EOS_VARIANT_CODE() Module base and major version bits
1 1 variant_lsb uint8 Low byte of EOS_VARIANT_CODE() Minor version and subtype bits
2 1 uplink_counter uint8 Incremented for each encoded LPWAN telemetry message Uplink counter
3 1 alarm uint8 Raw Is Alarm Bitfield Alarm Flags
4 1 internal_temperature uint8 Raw value = degC + 128; decoded value = raw - 128 Internal temperature
5 1 battery uint8 Percent Battery capacity
6..7 2 battery_voltage uint16 Millivolts; decoded value = raw / 1000 Battery voltage
8 1 radar_status uint8 0 or 1 Radar detection status
9 1 radar_peaks uint8 Number Detected radar peaks
10..11 2 radar_rd_1 uint16 millimeters; decoded value = raw / 1000 Distance to Radar Peak 1
12..13 2 radar_ra_1 int16 Two's complement Radar Peak 1 RCS / Amplitude
14..15 2 radar_rd_2 uint16 millimeters; decoded value = raw / 1000 Distance to Radar Peak 2
16..17 2 radar_ra_2 int16 Two's complement Radar Peak 2 RCS / Amplitude
18..19 2 radar_rd_3 uint16 millimeters; decoded value = raw / 1000 Distance to Radar Peak 3
20..21 2 radar_ra_3 int16 Two's complement Radar Peak 3 RCS / Amplitude
22 1 orientation uint8 Enum Orientation
23 1 tilt_angle uint8 degrees Tilt angle

Decoding Example

Bytes 10–11 → radar_rd_1

Raw Value: 1840
Decoding: 1840 / 1000

Result: 1.840 m
Bytes 6–7 → battery_voltage

Raw Value: 3575
Decoding: 3575 / 1000

Result: 3.575 V