Soil Power Sensor Python Protobuf Bindings {#protobuf-python}

The soil power sensor protobuf protocol is implemented as a Python package that allows for Measurement messages to be decoded into a dictionary and Response messages to be encoded. The generated files from protobuf are also accessible for more complex use cases.

Installation

Use the following to install the soil-power-sensor-protobuf package with pip:

pip install soil-power-sensor-protobuf

Usage

The following example code demonstrates decoding the measurement message and encoding a response.

from soil_power_sensor_protobuf import encode, decode

# get data encoded by the soil power sensor
data = ...

meas_dict = decode(data)

# process data
...

# send response
resp_str = encode(success=True)

The formatting of the dictionary depends on the type of measurement sent. The key type is included on all measurement types and can be used to determine the type of message. See the source *.proto files to get the full list of types to get the full list of types and keys. A list is provided in Message Types. The Python protobuf API uses camel case when naming keys. The key ts is in ISO 8601 format as a string.

Message Types

Type power

meas_dict = {
  "type": "power",
  "loggerId": ...,
  "cellId": ...,
  "ts": ...,
  "data": {
    "voltage": ...,
    "current": ...
  },
  "data_type": {
    "voltage": float,
    "voltage": float
  }
}

Type teros12

meas_dict = {
  "type": "teros12",
  "loggerId": ...,
  "cellId": ...,
  "ts": ...,
  "data": {
    "vwcRaw": ...,
    "vwcAdj": ...,
    "temp": ...,
    "ec": ...
  },
  "data_type": {
    "vwcRaw": float,
    "vwcAdj": float,
    "temp": float,
    "ec": int
  }
}

Testing

To run the package tests, create a virtual environment, install as an editable package, and run unittest.

python -m venv .venv
source .venv/bin/activate
pip install -e .
python -m unittest discover tests