Décodage de payload d'un sensor set Soil

 There are two references for the soil sensors:

Reference	Sensor set
Catnip Soil	19
WaterScout Soil	50

See how to set up the good configuration with the downlink message here.

Uplink structure for sensorset "catnip Soil #19"

	Soil Catnip sensor set 19: Report message example
	Byte 0	Byte 1	Byte 2	Byte 3	Byte 4
Label	message code	Temp	Moisture LSB	Moisture MSB	battery
Hexa	0x10 or 0x12	0x19	0x14	0x02	0x64
Decimal	16	25	532		100
Unit	NA	celcius	Raw capacity		percent

Uplink structure for sensorset "Water Scout Soil #50"

	Soil Waterscout sensor set 50: Report message example
	Byte 0	Byte 2	Byte 3	Byte 4
Label	message code	Moisture LSB	Moisture MSB	battery
Hexa	0x10 or 0x12	0x14	0x02	0x64
Decimal	16	532		100
Unit	NA	Raw capacity		percent

That means that before converting from HEXA to decimal, MSB should on left position and LSB on the right one.For moisture decoding we are using Little Endian convention.

In the example: 0x1402 -> 0x0214 ->532

In case of communication error between the sensor and the Device, the device may report an error code that needs to be filtered.

Sensor	Error Code (decimal)
Catnip Soil	32766
WaterScout Soil	No code error

In case of successive error code the device can be reboot remotely: How to reset a device trought a downlink message

How to compute water volumetric content from raw data?

The method to compute the water volumetric content from raw data sensor can be find in the section "Soil Specific Calibration" of the attached document "spec_capteur_waterscout_SM100.pdf". This method can be used for either waterscout ou catnip sensors.

Calculation process of water volumetric content

Setting threshold regarding soil type