Sensor data parser

A parser of data from a sensor.

Dependencies

If you have Python 3.11 and poetry installed, you can create a virtual environment with all the dependencies

make init

And then activate it

make shell

Or build a docker image from the Dockerfile file.

Usage

Pass data through stdin.

python3 -m sensor_data_parser [-h] [--create-db] [--db-path DB_PATH]

Option	Description
-h, --help	Show the help message and exit
--create-tables	Create tables for saving pressure packets
--db-path DB_PATH	Specify the path of the sqlite db where packets are gonna be saved, sqlite.db by default

Data format

Data is a hex string that is divided into chunks of size 8, and a chunk has the following format:

Indexes	Description
0-1	Packet identifier in hex representation which should always be equal to '80'
2-3	Current value counter in hex representation [00-7f]
4-7	Pressure value in hex representation

If a chunk has a wrong format, it's not saved to the db.

Example

Create sqlite.db file with necessary tables.

python3 -m sensor_data_parser --create-tables

Parse the data and save valid packets in sqlite.db.

python3 -m sensor_data_parser <<<"34ffffff80490000804a0000804b0000804c0000804d000079f3ffff"

The pressure_packet table in sqlite.db after that

id	current_value_counter	status	pressure_value
1	73	80	0
2	74	80	0
3	75	80	0
4	76	80	0
5	77	80	0

Make commands

Command	Description
make init	Install poetry and create a virtual environment
make shell	Activate the virtual environment
make test	Run tests
make coverage	Run tests with coverage
make lint	Format .py files in the project
make check_lint	Check if .py files are formatted
make lock	Create poetry.lock file from pyproject.toml