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Official Python lib for Crownstone: "Crownstone Unified System Bridge", or Crownstone USB implementation.
This works on all platforms and requires a Crownstone USB to work.
This module is written in Python 3 and needs Python 3.7 or higher. The reason for this is that most of the asynchronous processes use the embedded asyncio core library.
If you want to use python virtual environments, take a look at the README_VENV
You can install the package by pip:
pip3 install crownstone-uart
If you prefer the cutting edge (which may not always work!) or want to work on the library itself, use the setuptools:
python3 setup.py install
Requirements for the Crownstone USB
OS X requires installation of the SiliconLabs driver: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
In order to use serial without root access, you should be in the
You can check if you're in the group:
To add yourself:
$ sudo adduser $USER dialout
You may need to logout and login again.
Similar to Ubuntu.
To use serial in Arch Linux, add yourself to the
To add yourself to the group:
$ sudo gpasswd -a $USER uucp
Make sure to logout and login again to register the group change.
An example is provided in the root of this repository.
- First use the phone app to setup your Crownstones and the Crownstone USB.
- Make sure you update the Crownstones' firmware to at least 5.4.0.
- Find out what port to use (e.g.
/dev/tty.SLAB_USBtoUART), use this to initialize the library.
- Have this library installed.
Find the IDs of your Crownstones
Firstly run the example script that simply lists the IDs of the Crownstones.:
$ python3 ./examples/discovery_example.py
Once some IDs are printed, use one of them for the next example. This can take a while because Crownstones, if not switched, only broadcast their state every 60 seconds.
Switch a Crownstone, and show power usage.
Edit the file
targetCrownstoneIdto a Crownstone ID that was found in the previous example.
Run the file:
$ python3 ./examples/switch_example.py
The API documentation can be found here.
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