The Pi Gateway software is now at v9.0.0, this release is a major new feature and bug fix release. This blog entry serves as a change log and feature review. Below are the main highlights.
New Node button & sample metric generators (ex: Internet Speed polling event)
Clicking New Node you may add a numeric ID node. This could be a future RF or LAN node, or a dummy node to hold data such as your internet speed over time (add the Internet Speed event and enable it).
For RF nodes, any node that starts sending data through the serial port attached RF gateway, will automatically generate a new node. For RF nodes, node IDs up to 1023 are now possible thanks to 10bit addressing. Below you can also see a node with ID 999 that reports temperature.
A new Multigraph button on the node page allows generating a graph containing multiple metrics right on the node page. This enables you to easily compare the various metrics of a node chronologically. Clicking the far right remove button under the graph allows you to generate another graph with a different combination of metrics. There is a practical limit to how many metrics you can show since each metric can contain a lot of data and generates a separate vertical legend, so be reasonable and avoid pushing limits. Here’s such a graph showing the various metrics of an RF node:
Desktop graph scroll-zoom & double-click zoom
You may now scroll-zoom with your mouse wheel over a graph (works in all graphs) and it will zoom in and out. You can also double-click and it will zoom in. On mobile devices double tapping will zoom-in.
Edit and Delete metric data
Graphs now show lines between data points instead of bars by default. Still, sometimes it can be confusing looking at lines or bars, where the actual data points are. So you can now turn on data points. Additionally, you can edit and remove any single data point (click on specific data point to edit/remove) or range of data points (select range of data points to remove or change to a new value) if you wish by enabling the edit/delete mode using two buttons below the metric graph. Data points are automatically enabled when editing data.
Easy node image change
You can now change a node’s icon very easily to any existing icon (under the /www/images folder), or upload a new image of your choice (uploaded to /www/images/uploads). Icons should be 120x120px, if larger they are resized. Clicking the node icon:
This brings up the node icon change dialog (pick existing or upload new):
Other icon changes:
- some default icons have changed (ex. CT-50 thermostat)
- for consistency, all default icon nodes are now prefixed with icon_
- rssi icons renamed to rssi_n with n=[1, 7]
New HTTPEndpoint for posting data from LAN
You may now submit data to the Gateway from any LAN device, thus enabling the use of WiFi (ESP anyone?) and network connected nodes, and also essentially removing the need of using only RF nodes. For instance:
will generate a new node (if non existent) with ID=1234, and generate two new metrics (MOTION, and temperature). If an ID is not provided, then the IP of that node becomes the ID. The generated node will always have a new _ip property which contains the IP of the sender. Other examples:
/httpendpoint/?MOTION&F=12-> ID=(valid IP)
/httpendpoint/-> no update, just lastupdated timestamp
The response will be JSON of this form:
Run in internet isolated LAN
All script files are now loaded locally and there is no longer a dependence on an internet connected RaspberryPi to fetch these scripts. So there is no concern running this completely disconnected or behind firewalls etc.
Title setting & Menu changes
You can set your own custom title from the settings page, don’t forget to click Save to apply changes. The menu now shows the Gateway app version, when the database was last compacted (done once daily automatically), and an option to compact the database on demand.
You can now quickly restart the app via Ctrl+Atl+Shift+R, or from the Menu as before.
Run it as a Mobile app
You can now run the application as a mobile app. A manifest.json definition that loads automatically with the web page allows you to create a shortcut via the Add To Home Screen option in your mobile device’s browser. Then clicking that icon on your home screen opens the web page like a mobile application without the extra browser bars.
New default metrics
- It’s sometimes desirable to compare the RSSI of an RF node with the transmit level of an RF node. The new X:n metric with n=[0, 31] allows this to work nicely with the RFM69_ATC library extension and you can see the transmit level drop or rise based on the RSSI change.
- A new TYPE:nodeType which matches the
exports.motesdefinition of a mote in metrics.js allows to automatically pick that mote’s icon and other features like buttons. Example: when a SwitchMote is powered up, it can send a 1 time TYPE:SwitchMote token to indicate it’s a SwitchMote. You can always later override and pick the node type from the node type dropdown
Other misc changes
- gateway.service is now run as pi:pi, and systemd will keep retrying to restart it if it crashes
- fixed genNodeIfNoMatch setting
- the /www/images/uploads directory is now
chownedby www-data:pi during setup
- node name/title added on the metric page – this helps determine which node’s temperature metric you may be looking at (vs. just “Temperature”)
- ordered Node/Event type dropDowns (A-Z)
- reworded and simplified licensing terms
Installation and upgrade path
This being such a major change with many new/renamed/deleted files, it’s a good idea to reinstall the application from scratch on a new raspbian image rather than try to do an in-place manual upgrade. This also ensures you will be running the latest and best raspbian, nginx, PHP7, nodeJs & packages, etc.
To transition your data to V9, backup the content of the
/home/pi/gateway/data/dbfolder, then make a complete image backup of your currently functional previous version and store that until you are sure V9 runs smoothly on your Pi and all your old data is picked up.
Then follow the Gateway software setup steps in the official guide to install V9 to the latest raspbian image.
Once the V9 is running, to load your old data, you will need to
sudo systemctl stop gateway, copy/overwrite the saved data into the new /home/pi/gateway/data/db folder, and then
sudo systemctl restart gateway, and you should see all your old nodes and their data.
For any issues and bugs, please use this forum or you may submit a PR to the Github repository. Note that this change log may be edited as any loose ends are tied and before an official release is created.