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install_guide_pi.md

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Raspbian

RuuviTag is a Bluetooth Low Energy device. Bluetooth 4.0 support is required from the Bluetooth adapter. Raspberry Pi 3 as well as Pi Zero W have integrated Bluetooth which support BLE devices. For older models a Bluetooth adapter is required.

Tested with Raspbian Jessie 2017-01-11 and '4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017', and '4.14.79-v7+ #1159 SMP Sun Nov 4 17:50:20 GMT 2018 armv7l GNU/Linux'

Official startup guide: https://www.raspberrypi.org/documentation/configuration/raspi-config.md

Summarised here:

Start the Pi

Plug display and keyboard

Open Terminal

Enable SSH (optional)

Open raspi-config to enable SSH

$ sudo raspi-config

Select Hostname and give your pi a name.

You may want to Select Localisation Options Set up language and regional settings(timezone) to match your location

Select Interface Options

SSH and enable ssh server (Secure Shell command line

Now you can either connect to raspberry pi over the network with SSH (For example use Putty from windows) or continue using current terminal.

Use these login credentials

username: pi 
password: raspberry

Update the System

Update package indexes and upgrade installed packages. apt-get is rather verbose and how long it takes depends on what needs to be updated.

$ sudo apt-get update &&  sudo apt-get dist-upgrade && echo +++ upgrade successful +++

Bluetooth

List Bluetooth devices and verify that hci0 is on the list

$ hcitool dev

Expect output similar to

Devices:
	hci0	B8:27:EB:96:64:43

If no devices are listed, reboot and check again

$ reboot

If still nothing, install Bluetooth again

$ sudo apt-get install bluetooth bluez blueman
$ reboot

Update Python 3 version (optional)

You might want to update default version of Python 3 to a newer version. Newer version must be installed from the sources. This will take around 20min to complete.

Install dependencies so SSL will work with newly compiled pip (not sure if all of these are needed)

$ sudo apt-get install libbz2-dev liblzma-dev libsqlite3-dev libncurses5-dev libgdbm-dev zlib1g-dev libreadline-dev libssl-dev tk-dev

This example installs version 3.6.0

$ wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz
$ tar xzvf Python-3.6.0.tgz
$ cd Python-3.6.0/
$ ./configure
$ make -j2
$ sudo make install
# to preserve the existing custom python installations (e.g. having python3.6 installed and want python3.7 on the side)
# $ sudo make altinstall
$ reboot

Install ruuvitag-sensor package

Ruuvitag-sensor package requires bluez and bluez-hcidump. Bluez is the Linux Bluetooth system and allows a Raspberry Pi to communicate with Bluetooth classic and Bluetooth low energy (LE) devices and is included with Raspbian. Hcidump is a tool which prints data broadcasted by Bluetooth devices to console and needs to be installed.

$ sudo apt-get install bluez-hcidump && echo +++ install successful +++

Expect the usual verbose output from apt-get.

Upgrade setuptools

$ sudo pip3 install --upgrade setuptools

Install ruuvitag-sensor package from the Python Package Index (PyPI) with pip (Python package management system). Because we are using Python 3, install ruuvitag-sensor package with pip3. Add --user to install for current user

$ python3 -m pip install --user ruuvitag_sensor

This library includes a command line utility.

Try displaying the help.

$ python3 -m ruuvitag_sensor --help

Expect

usage: __main__.py [-h] [-g MAC_ADDRESS] [-d BT_DEVICE] [-f] [-l] [-s] [--version] [--debug]

optional arguments:
  -h, --help            show this help message and exit
  -g MAC_ADDRESS, --get MAC_ADDRESS
                        Get data
  -d BT_DEVICE, --device BT_DEVICE
                        Set Bluetooth device id (default hci0)
  -f, --find            Find broadcasting RuuviTags
  -l, --latest          Get latest data for found RuuviTags
  -s, --stream          Stream broadcasts from all RuuviTags
  --version             show program's version number and exit
  --debug               Enable debug logging

If this fails with a traceback, change the path to match Python's minor version, i.e. if you updated Python to version 3.6 then path is ~/.local/lib/python3.6/....

Make an alias if you choose

$ alias ruuvitag='python3 ~/.local/lib/python3.4/site-packages/ruuvitag_sensor'

Try to find all tags

$ ruuvitag -f

After several seconds, expect something like

F2:C0:C6:43:AD:03
{'pressure': 1003.0, 'identifier': 'N', 'temperature': 20.0, 'humidity': 52.0}
E9:38:3F:DD:20:BC
{'pressure': 1004.0, 'identifier': 'r', 'temperature': 22.0, 'humidity': 100.0}
D3:51:78:72:EC:0F
{'pressure': 1003.0, 'identifier': 's', 'temperature': 11.0, 'humidity': 60.0}

This continues waiting for additional tags to be detected until interrupted with ^C.

Open nano editor and create test script tag_test.py

$ nano tag_test.py

Add this content. Exit with Ctrl-X and select Y to save

import ruuvitag_sensor
from ruuvitag_sensor.log import log
from ruuvitag_sensor.ruuvi import RuuviTagSensor

ruuvitag_sensor.log.enable_console()

RuuviTagSensor.find_ruuvitags()

Execute script just created. Expect the same result as from find all tags executed from the command line.

$ python3 tag_test.py

Now you are all set!

Remember to check examples from the examples directory.