User Guide

IoT into the Wild
37
9.3.1 Example – S2102 Light Intensity Sensor
Light Intensity Sensor measurement packet:
01 0310 A8550200 E3E9
Part
Value
Raw Data
Description
1
Light
Intensity
01 0310 A8550200
01 is the channel number.
0310 is 0x1003（little-endian byte order）,
which is the measurement ID for Light
Intensity.
A8550200 is actually 0x000255A8, whose
equivalent decimal value is 153000. Divide it
by 1000, and you’ll get the actual
measurement value for Light Intensity as 153
Lux.
3
CRC
E3E9
The CRC verification part.