Bobaos Datapoint Sdk Unix Domain Socket
npm install bdsd.sockThis module intended to solve architecturing problem when developing js applcation for KNX.
Nodejs connects to BAOS 838 module via serial port, usually /dev/ttyAMA0 and it handles only one connection at a time.
But what if you want to connect to KNX bus multiple clients?
If you want to write some custom scripts and use this device as a MQTT gateway at a same time?
So, schematically it may look like this:
!meow
Assuming you have Raspberry Pi with installed Raspbian with configured access to BAOS module via /dev/ttyAMA0.
If not, follow instructions on bobaos repository page
``
$ curl -L https://raw.githubusercontent.com/bobaos/bdsd.sock/master/bdsd_install.sh | bash
1. Install npm package
`
$ sudo npm install -g bdsd.sock --unsafe-perm
Check if it executes correctly:
`
$ bdsd.sock
IPC: Checking for leftover socket.
IPC: No leftover socket found.
IPC: Listening at /run/user/1000/bdsd.sock
BAOS: connected to baos
BAOS: success on setting indications to: 0
BAOS: success on get datapoint description: { id: 1 , dpt: dpt9 }
BAOS: success on get datapoint description: { id: 2 , dpt: dpt5 }
......
......
BAOS: success on get datapoint description: { id: 999 , dpt: dpt16 }
BAOS: success on get datapoint description: { id: 1000 , dpt: dpt16 }
BAOS: success on setting indications to: 1
BAOS: got bus state: connected
Since version 2.0.0 bdsd.sock accepts command line arguments to ease running on different platforms.
`
$ bdsd.sock --help
Options:
--help Show help [boolean]
--version Show version number [boolean]
--sockfile, -s path to socket file. Default:
/run/user/1000/bdsd.sock'
--serialport-device, -d path to serialport device. Default: /dev/ttyAMA0
--serialport-params, -p serialport parameters: "baud rate,parity,data
bits,stop bits". Default: "19200,even,8,1"
2. Create systemd service folders, create service file
`
$ cd ~/
$ mkdir ~/.config/systemd
$ mkdir ~/.config/systemd/user
$ touch ~/.config/systemd/user/bdsd.service
Then add following to this file using your favourite text editor:
`
[Unit]
Description=Bobaos Datapoint Sdk Daemon
[Service]
ExecStart=/usr/bin/env bdsd.sock
[Install]
WantedBy=default.target
`
3. Enable service, enable automatic start-up
`
$ systemctl --user daemon-reload
$ systemctl --user enable bdsd.service
$ sudo loginctl enable-linger pi
4. Start the service
`
$ systemctl --user start bdsd.service
5. Check with bdsd-cli
`
$ sudo npm -g install bdsd-cli
$ bdsd-cli
connected
bobaos> setProgrammingMode -v 1
Set programming mode: success
bobaos> getValue -s 1
{ id: 1, value: true }
bobaos>
For js applications there will be available client-side library which you may install from npm.
Further information you can find in repo: bdsd.client
For other programming languages you may implement client-side library which should communicate with IPC following Bobaos Datapoint Sdk Message Protocol.
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