diff --git a/README.md b/README.md
index 047f58c..789b74c 100644
--- a/README.md
+++ b/README.md
@@ -1,299 +1,59 @@
-# Ysdtools - A collection of useful tools
+[![pipeline status](https://gitlab.com/helloysd/modpoll/badges/master/pipeline.svg)](https://gitlab.com/helloysd/modpoll/-/commits/master)
+[![License](https://img.shields.io/pypi/l/modpoll)](https://gitlab.com/helloysd/modpoll/-/blob/master/LICENSE)
 
-[![Release](https://img.shields.io/pypi/v/ysdtools)](https://pypi.org/project/ysdtools/)  
-[![build](https://github.com/gavinying/ysdtools-python/actions/workflows/ci.yml/badge.svg)](https://github.com/gavinying/ysdtools-python/actions)
-[![codecov](https://codecov.io/gh/gavinying/ysdtools-python/branch/master/graph/badge.svg?token=TDBFIHJDZG)](https://codecov.io/gh/gavinying/ysdtools-python)
-[![Read the Docs](https://readthedocs.org/projects/ysdtools-python/badge/?version=latest)](https://ysdtools-python.readthedocs.io/en/latest)
+---
 
-**This project is not designed for production, only for personal use!**
+# Modpoll
 
-## Table of Contents
+A command line tool to communicate with modbus devices.
 
-- [Project Setup](#project-setup)
-    - [Initialize Project](#initialize-project)
-    - [Build and Test](#build-and-test)
-    - [Document Project](#document-project)
-    - [Setup CI Pipeline](#setup-ci-pipeline)
-    - [CodeCov](#codecov)
-    - [Read The Docs](#read-the-docs)
-    - [Deploy to PyPI](#deploy-to-pypi)
-- [Install](#install)
-- [Usage](#usage)
-- [Maintainers](#maintainers)
-- [License](#license)
+> Learn more about `modpoll` usage at [documentation](https://helloysd.gitlab.io/modpoll) site. 
 
-## Project Setup
-This project uses [poetry](https://python-poetry.org/) to setup project. Project setup process is based on https://testdriven.io/blog/python-project-workflow
 
-### Initialize Project
+## Motivation
 
-First, let's create a python project with poetry, 
+The initial idea of creating this tool is to help myself debugging and troubleshooting new modbus devices during site survey. A typical site survey usually has limited time and space, working on-site also pile up some pressures. During that time, a portable swiss-knife toolkit is our best friend.
 
-```bash
-$ poetry new --name ysdtools ysdtools-python
+This program can be easily deployed to Raspberry Pi or similar embedded devices, continuously polling data from the connected modbus devices, you can choose to save data locally or forward uplink to a MQTT broker for easy debugging, the MQTT broker can be setup on the same Raspberry Pi or on the cloud. On the other hand, a smart phone (Android/Iphone) can be used to visualize collected data and control the devices remotely via the same MQTT broker. 
 
-Package name [ysdtools]:
-Version [0.1.0]:
-Description []:
-Author [Your name <your@email.com>, n to skip]:
-License []:
-Compatible Python versions [>3.7,<4.0]:
+However, beside the above recommended setup, you can actually run this program on any PC or server with Python 3 support. One popular use case is to deploy the program onto a server and keep it running as a gateway to bridge between traditional industrial network and modern IoT edge/cloud infrustructure. 
 
-Would you like to define your main dependencies interactively? (yes/no) [yes] no
-Would you like to define your development dependencies interactively? (yes/no) [yes] no
-Do you confirm generation? (yes/no) [yes]
-```
+> This program is designed as a standalone tool, if you are looing for a python library to communicate with modbus devices, please consider the following two great open source projects, [pymodbus](https://github.com/riptideio/pymodbus) or [minimalmodbus](https://github.com/pyhys/minimalmodbus)
 
-Now you will have a folder `ysdtools-python`, and modify the config file `pyproject.toml` inside according to your project need. 
-Your project name must be unique since you'll be uploading it to PyPI. So, to avoid name collisions add a unique string to the package name in pyproject.toml.
+## Installation
 
-> For more details on Poetry, check out `https://python-poetry.org/docs/basic-usage`
+This program is tested on python 3.6+.
 
-Create a new repository on Github named `ysdtools-python`, and initialize with the newly created project.
+- Install with pip
 
-Inside the project folder, add a few python dependencies for testing and code quality check, 
-```bash
-$ poetry add --dev pytest pytest-cov black isort flake8 bandit safety
-```
-Add the new poetry.lock file as well as the updated pyproject.toml file to git,
-```bash
-$ git add poetry.lock pyproject.toml
-```
+  The package is available in the Python Package Index, 
 
-### Build and Test
+  ```bash
+  pip install modpoll
+  ```
 
-Now the project layout looks like this,
-```bash
-ysdtools-python
-├── poetry.lock
-├── pyproject.toml
-├── tests
-│   ├── __init__.py
-│   └── test_ysdtools.py
-└── ysdtools
-    ├── __init__.py
-    └── ysdlog.py
-```
-Run the script,
-```bash
-$ poetry run python ysdtools/ysdlog.py
-```
-Run the test,
-```bash
-$ poetry run python -m pytest tests
-```
+  Upgrade the tool via pip by the following command,
 
-### Document Project
+  ```bash
+  pip install -U modpoll
+  ```
 
-We use Google python style for docstrings, 
-> If you are not familiar with docstrings or documentation, please refer to [Google Python Style Guide](https://google.github.io/styleguide/pyguide.html)
+- Install with docker
 
-Assuming you have [Sphinx](https://www.sphinx-doc.org/en/master/usage/quickstart.html) installed, run the following to scaffold out the files and folders for Sphinx in the project root:
-```bash
-$ sphinx-quickstart docs
+  (To be added...)
 
-> Separate source and build directories (y/n) [n]: n
-> Project name: Ysdtools
-> Author name(s): Your Name
-> Project release []: 0.1.0
-> Project language [en]: en
-```
-Next, let's update the `docs/conf.py`, set the correct source path,
-```bash
-import os
-import sys
-sys.path.insert(0, os.path.abspath('../'))
-```
-Add autodoc extention, 
-```bash
-extensions = [
-    'sphinx.ext.autodoc',
-]
-```
 
-Create a new page `docs/ysdlog.rst` with the following content,
-```bash
-ysdtools.ysdlog
-====================================
-.. automodule:: ysdtools.ysdlog
-    :members:
-```
+## Examples
 
-Update `docs/index.rst` like so, 
-```bash
-Welcome to ysdtools's documentation!
-====================================
+Please refer to [documentation](https://helloysd.gitlab.io/modpoll) site for more configures and examples.
 
-.. toctree::
-   :maxdepth: 2
-   :caption: Contents:
+## Credits
 
-   ysdlog
-```
-
-### Setup CI Pipeline
-Let's setup CI pipeline with Github Actions,
-add the following files and folders to the project root:
-```bash
-.github
-└── workflows
-    └── ci.yml
-```
-Inside ci.yml, 
-```bash
-name: Push
-on: [push, pull_request]
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: [3.8]
-        poetry-version: [1.1.5]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Run image
-        uses: abatilo/actions-poetry@v2.0.0
-        with:
-          poetry-version: ${{ matrix.poetry-version }}
-      - name: Install dependencies
-        run: poetry install
-      - name: Run tests
-        run: poetry run pytest --cov=./ --cov-report=xml
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-  code-quality:
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: [3.8]
-        poetry-version: [1.1.5]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Run image
-        uses: abatilo/actions-poetry@v2.0.0
-        with:
-          poetry-version: ${{ matrix.poetry-version }}
-      - name: Install dependencies
-        run: poetry install
-      - name: Run black
-        run: poetry run black . --check
-      - name: Run isort
-        run: poetry run isort . --check-only
-      - name: Run flake8
-        run: poetry run flake8 .
-      - name: Run bandit
-        run: poetry run bandit -r . -x ./tests,./docs
-      - name: Run saftey
-        run: poetry run safety check
-```
-There are two jobs defined: test and code-quality. As the names' suggest, the tests run in the test job while our code quality checks run in the code-quality job.
-
-> Now on every push to the GitHub repository, tests and code quality jobs will run.
-
-Before we commit the changes, it is better to pass all local test first,
-```bash
-$ poetry run black . --check
-$ poetry run isort . --check-only
-$ poetry run flake8 .
-$ poetry run bandit -r . -x ./tests,./docs
-$ poetry run safety check
-```
-
-Finally, we can commit and push the code,
-```bash
-$ git commit -m 'CI pipeline ready'
-$ git push -u origin master
-```
-You should see your workflow running on the "Actions" tab on your GitHub repository. Make sure it passes before moving on.
-
-### CodeCov
-Next, we'll configure CodeCov to track code coverage. Navigate to http://codecov.io/, and log in with your GitHub account and find your repository.
-
-Run the GitHub Actions workflow again. Once done, you should be able to see the coverage report on CodeCov.
-
-If the github repository is private, you can generate an API token from CodeCov, and put it as an environment variable `CODECOV_TOKEN` in Github `project->settings->secrets`.
-
-### Read The Docs
-We'll use Read the Docs to host our documentation. Navigate to https://readthedocs.org, and log in using your GitHub account.
-
-> Read The Docs cloud only support public repository for free.
-
-### Deploy to PyPI
-Finally, in order to make the project "pip-installable", we'll publish it to PyPI.
-
-Add the following code in `pyproject.toml`,
-```bash
-packages = [
-    { include = "ysdtools" },
-]
-```
-
-Add a new file called `cd.yml` to ".github/workflows":
-```bash
-name: Release
-on:
-  release:
-    types:
-      - created
-
-jobs:
-  publish:
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: [3.8]
-        poetry-version: [1.1.5]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Run image
-        uses: abatilo/actions-poetry@v2.0.0
-        with:
-          poetry-version: ${{ matrix.poetry-version }}
-      - name: Publish
-        env:
-          PYPI_TOKEN: ${{ secrets.PYPI_TOKEN }}
-        run: |
-          poetry config pypi-token.pypi $PYPI_TOKEN
-          poetry publish --build
-```
-
-Next, we'll need to create a PyPI token. Create an account on PyPI if you don't already have one. Then, once signed in, click "Account settings" and add a new API token. Copy the token. You'll now need to add it to your GitHub repository's secrets. Within the repo, click the "Settings" tab, and then click "Secrets". Use PYPI_TOKEN for the secret name and the token value as the secret value.
-
-
-## Install
-Install via pip,
-```bash
-$ pip install ysdtools
-```
-
-## Usage
-A basic usage is as,
-```bash
-from ysdtools import ysdlog
-ysdlog.info("Start logging...")
-```
-
-## Maintainers
-Ying Shaodong <helloysd@gmail.com>
+The implementation of this project is heavily inspired by the following two projects:
+- https://github.com/owagner/modbus2mqtt (MIT license)
+- https://github.com/mbs38/spicierModbus2mqtt (MIT license)
+Thanks to Max Brueggemann and Oliver Wagner for their great work. 
 
 ## License
-[MIT](LICENSE) © Ying Shaodong
+
+MIT © [Ying Shaodong](helloysd@foxmail.com)
diff --git a/poetry.lock b/poetry.lock
index dfe2196..fcb5716 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,11 +1,3 @@
-[[package]]
-name = "appdirs"
-version = "1.4.4"
-description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-category = "dev"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "atomicwrites"
 version = "1.4.0"
@@ -16,78 +8,17 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "attrs"
-version = "20.3.0"
+version = "21.2.0"
 description = "Classes Without Boilerplate"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-
-[package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"]
-docs = ["furo", "sphinx", "zope.interface"]
-tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
-tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
-
-[[package]]
-name = "bandit"
-version = "1.7.0"
-description = "Security oriented static analyser for python code."
-category = "dev"
-optional = false
-python-versions = ">=3.5"
-
-[package.dependencies]
-colorama = {version = ">=0.3.9", markers = "platform_system == \"Windows\""}
-GitPython = ">=1.0.1"
-PyYAML = ">=5.3.1"
-six = ">=1.10.0"
-stevedore = ">=1.20.0"
-
-[[package]]
-name = "black"
-version = "20.8b1"
-description = "The uncompromising code formatter."
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-appdirs = "*"
-click = ">=7.1.2"
-mypy-extensions = ">=0.4.3"
-pathspec = ">=0.6,<1"
-regex = ">=2020.1.8"
-toml = ">=0.10.1"
-typed-ast = ">=1.4.0"
-typing-extensions = ">=3.7.4"
-
-[package.extras]
-colorama = ["colorama (>=0.4.3)"]
-d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
-
-[[package]]
-name = "certifi"
-version = "2020.12.5"
-description = "Python package for providing Mozilla's CA Bundle."
-category = "dev"
-optional = false
-python-versions = "*"
-
-[[package]]
-name = "chardet"
-version = "4.0.0"
-description = "Universal encoding detector for Python 2 and 3"
-category = "dev"
-optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
-[[package]]
-name = "click"
-version = "7.1.2"
-description = "Composable command line interface toolkit"
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit"]
+docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins"]
 
 [[package]]
 name = "colorama"
@@ -97,156 +28,50 @@ category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
-[[package]]
-name = "coverage"
-version = "5.5"
-description = "Code coverage measurement for Python"
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
-
-[package.extras]
-toml = ["toml"]
-
-[[package]]
-name = "dparse"
-version = "0.5.1"
-description = "A parser for Python dependency files"
-category = "dev"
-optional = false
-python-versions = ">=3.5"
-
-[package.dependencies]
-packaging = "*"
-pyyaml = "*"
-toml = "*"
-
-[package.extras]
-pipenv = ["pipenv"]
-
-[[package]]
-name = "flake8"
-version = "3.9.0"
-description = "the modular source code checker: pep8 pyflakes and co"
-category = "dev"
-optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-
-[package.dependencies]
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
-mccabe = ">=0.6.0,<0.7.0"
-pycodestyle = ">=2.7.0,<2.8.0"
-pyflakes = ">=2.3.0,<2.4.0"
-
-[[package]]
-name = "gitdb"
-version = "4.0.7"
-description = "Git Object Database"
-category = "dev"
-optional = false
-python-versions = ">=3.4"
-
-[package.dependencies]
-smmap = ">=3.0.1,<5"
-
-[[package]]
-name = "gitpython"
-version = "3.1.14"
-description = "Python Git Library"
-category = "dev"
-optional = false
-python-versions = ">=3.4"
-
-[package.dependencies]
-gitdb = ">=4.0.1,<5"
-
-[[package]]
-name = "idna"
-version = "2.10"
-description = "Internationalized Domain Names in Applications (IDNA)"
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-
 [[package]]
 name = "importlib-metadata"
-version = "3.9.0"
+version = "1.7.0"
 description = "Read metadata from Python packages"
-category = "dev"
+category = "main"
 optional = false
-python-versions = ">=3.6"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 
 [package.dependencies]
-typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
 
 [[package]]
-name = "iniconfig"
-version = "1.1.1"
-description = "iniconfig: brain-dead simple config-ini parsing"
+name = "more-itertools"
+version = "8.9.0"
+description = "More routines for operating on iterables, beyond itertools"
 category = "dev"
 optional = false
-python-versions = "*"
-
-[[package]]
-name = "isort"
-version = "5.8.0"
-description = "A Python utility / library to sort Python imports."
-category = "dev"
-optional = false
-python-versions = ">=3.6,<4.0"
-
-[package.extras]
-pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
-requirements_deprecated_finder = ["pipreqs", "pip-api"]
-colors = ["colorama (>=0.4.3,<0.5.0)"]
-
-[[package]]
-name = "mccabe"
-version = "0.6.1"
-description = "McCabe checker, plugin for flake8"
-category = "dev"
-optional = false
-python-versions = "*"
-
-[[package]]
-name = "mypy-extensions"
-version = "0.4.3"
-description = "Experimental type system extensions for programs checked with the mypy typechecker."
-category = "dev"
-optional = false
-python-versions = "*"
+python-versions = ">=3.5"
 
 [[package]]
 name = "packaging"
-version = "20.9"
+version = "21.0"
 description = "Core utilities for Python packages"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.6"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
 
 [[package]]
-name = "pathspec"
-version = "0.8.1"
-description = "Utility library for gitignore style pattern matching of file paths."
-category = "dev"
+name = "paho-mqtt"
+version = "1.5.1"
+description = "MQTT version 5.0/3.1.1 client class"
+category = "main"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = "*"
 
-[[package]]
-name = "pbr"
-version = "5.5.1"
-description = "Python Build Reasonableness"
-category = "dev"
-optional = false
-python-versions = ">=2.6"
+[package.extras]
+proxy = ["pysocks"]
 
 [[package]]
 name = "pluggy"
@@ -271,20 +96,23 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
-name = "pycodestyle"
-version = "2.7.0"
-description = "Python style guide checker"
-category = "dev"
+name = "pymodbus"
+version = "2.5.2"
+description = "A fully featured modbus protocol stack in python"
+category = "main"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*"
 
-[[package]]
-name = "pyflakes"
-version = "2.3.1"
-description = "passive checker of Python programs"
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+[package.dependencies]
+pyserial = ">=3.4"
+six = ">=1.15.0"
+
+[package.extras]
+documents = ["sphinx (>=1.1.3)", "sphinx-rtd-theme", "humanfriendly"]
+quality = ["coverage (>=3.5.3)", "nose (>=1.2.1)", "mock (>=1.0.0)", "pep8 (>=1.3.3)"]
+repl = ["click (>=7.0)", "prompt-toolkit (==2.0.4)", "pygments (>=2.2.0)", "click (>=7.0)", "prompt-toolkit (>=3.0.8)", "pygments (>=2.2.0)", "aiohttp (>=3.7.3)", "pyserial-asyncio (>=0.5)"]
+tornado = ["tornado (==4.5.3)"]
+twisted = ["Twisted[serial,conch] (>=20.3.0)", "Twisted[conch] (>=20.3.0)"]
 
 [[package]]
 name = "pyparsing"
@@ -294,314 +122,100 @@ category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[package]]
+name = "pyserial"
+version = "3.5"
+description = "Python Serial Port Extension"
+category = "main"
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diff --git a/pyproject.toml b/pyproject.toml
index 748cb65..d2f006e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,28 +1,31 @@
 [tool.poetry]
-name = "ysdtools"
-version = "0.1.1"
-description = "A collection of useful python tools"
-authors = ["ysd <helloysd@foxmail.com>"]
-packages = [
-    { include = "ysdtools" },
+name = "modpoll"
+version = "0.2.24"
+description = "A command line tool to communicate with modbus devices"
+authors = ["Ying Shaodong <helloysd@foxmail.com>"]
+readme = "README.md"
+homepage = "https://helloysd.gitlab.io/modpoll"
+repository = "https://gitlab.com/helloysd/modpoll"
+license = "MIT"
+include = [
+  "LICENSE",
 ]
 
 [tool.poetry.dependencies]
-python = ">3.7,<4.0"
+python = "^3.6"
+importlib-metadata = {version = "^1.0", python = "<3.8"}
+pymodbus = "^2.5.2"
+paho-mqtt = "^1.5.1"
 
 [tool.poetry.dev-dependencies]
-pytest = "^6.2.2"
-pytest-cov = "^2.11.1"
-black = "^20.8b1"
-isort = "^5.8.0"
-flake8 = "^3.9.0"
-bandit = "^1.7.0"
-safety = "^1.10.3"
+pytest = "^5.2"
+sphinx = "^4.2.0"
+sphinx-argparse = "^0.3.1"
+sphinx-rtd-theme = "^1.0.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
-[tool.pytest.ini_options]
-log_cli = true
-log_level = "DEBUG"
+[tool.poetry.scripts]
+modpoll = "modpoll:app"
diff --git a/tests/test_modpoll.py b/tests/test_modpoll.py
new file mode 100644
index 0000000..993c50b
--- /dev/null
+++ b/tests/test_modpoll.py
@@ -0,0 +1,2 @@
+def test():
+    assert True