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https://github.com/rangerdigital/senko

🦊 Simplest OTA update solution for your Micropython projects.
https://github.com/rangerdigital/senko

esp32 esp8266 microcontroller micropython ota-update ota-updater over-the-air senko

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🦊 Simplest OTA update solution for your Micropython projects.

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Senko – OTA Updater




---



[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)



Senko is the simplest **Over The Air** updater solution for your **Micropython** projects based on **ESP8266** and **ESP32**.



Senko synchronizes selected files on your microcontroller with the remote ones from **GitHub** repository.  

I used Senko to automatically deploy the latest `master` branch to my ESP8266 sensors fleet.



> 🚧 By all means, Senko is not the best implementation, but for my simple IoT projects, It was adequate!







## 🛠 Operating Principle



Every time `.fetch()` or `.update()` methods are called Senko compares **SHA1** hashes of local files with remote ones to determine if they are the same.



If they are not, Senko saves remote files from **GitHub** repository to your microcontroller. This means you need to reboot to run the latest code.



> 🚧 You are responsible for implementing a network connection and reboot strategy!







## 🔥 Installation



Senko consists of a single `senko.py` module that you import.



You can use **Ampy** or **WebREPL** to load `/senko/senko.py` module to your microcontroller:



```bash

sudo ampy -p /dev/ttyUSB0 put senko.py

```



Or use **uPip** to install Senko from **PyPi**:



```python

import upip

upip.install("micropython-senko")

```







## 🎉 Usage



You should start by importing the module and creating a `Senko` object.



You have to specify **user** with your GitHub username, **repo**, and **files** that you want to keep synchronized.



```python

# boot.py

import senko



OTA = senko.Senko(

  user="ocktokit", # Required

  repo="octokit-iot", # Required

  branch="master", # Optional: Defaults to "master"

  working_dir="app", # Optional: Defaults to "app"

  files = ["boot.py", "main.py"]

)

```



Or You can also specify **URL** to the **GitHub** directory containing your code and **files** that you want to keep synchronized.



```python

# boot.py

import senko



GITHUB_URL = "https://github.com/RangerDigital/senko/blob/master/examples/"

OTA = senko.Senko(url=GITHUB_URL, files=["boot.py", "main.py"])

```



To get the **URL** simply click the `RAW` button on the one of the files that you want to track and then strip the name of that file from it.



> 💡 You can even specify what branch Senko will update from!







### Updating



Then after connecting to Wi-Fi network call `OTA.update()`:



```python

# boot.py

import senko

import machine

import network



OTA = senko.Senko(

  user="ocktokit", repo="octokit-iot", files = ["boot.py", "main.py"]

)



# Connect to Wi-Fi network.

connect_wlan()



if OTA.update():

    print("Updated to the latest version! Rebooting...")

    machine.reset()

```



This setup will try to keep `boot.py` and `main.py` updated every time microcontroller boots.







### Fetching



If you only want to check if the newer version of files exists call `OTA.fetch()`:



```python

if OTA.fetch():

    print("A newer version is available!")

else:

    print("Up to date!")

```



> 💡 Check out a simple example of usage from `examples` directory!







## 🚧 Contributing



**You are more than welcome to help me improve Senko!**



Just fork this project from the `master` branch and submit a Pull Request (PR).







## 📃 License



This project is licensed under [GPL-3.0](https://choosealicense.com/licenses/gpl-3.0/) .