bdsd.client

bdsd - bobaos datapoint sdk daemon client

Coming soon.

Usage

In terminal:

npm install --save bdsd.client

In js file:

const BdsdClient = require('bdsd.client');

// BdsdClient function accepts socket filename as an argument.
// If no argument provided then it will try to connect to following file:
// process.env['XDG_RUNTIME_DIR'] + '/bdsd.sock'. Usually it is /run/user/1000/bdsd.sock.
let myClient = BdsdClient();


// Register listener for broadcasted values
myClient.on('value', data => {
  console.log('broadcasted value', data);
});


// Listener for connected event. 
// Triggers when client connects and receive 'bus connected' notification
myClient.on('connect', _ => {
  console.log('client connected');
  
  // get list of all datapoints
  myClient
    .getDatapoints()
    .then(console.log)
    .catch(console.log);
  
  // get description for one dp
  myClient
    .getDescription(1)
    .then(console.log)
    .catch(console.log);
  
  // get datapoint value
  myClient
    .getValue(1)
    .then(console.log)
    .catch(console.log);
  
  // send read request to bus
  myClient
    .readValue(1)
    .then(console.log)
    .catch(console.log);
  
  // set datapoint value and send to bus
  myClient
    .setValue(1, true)
    .then(console.log)
    .catch(console.log);
 
  // set programming mode to 1
  myClient
    .setProgrammingMode(1)
    .then(console.log)
    .catch(console.log);

  // get stored value from bdsd.sock(avoid communication via serialport)
  myClient
    .getStoredValue(1)
    .then(console.log)
    .catch(console.log)

  // read multiple values
  myClient
    .readValues([1, 2, 3])
    .then(console.log)
    .catch(console.log);

  // set multiple values
  myClient
    .setValues([
      { id: 1, value: true},
      { id: 2, value: 1}
    ])
    .then(console.log)
    .catch(console.log);
});

// error handling
myClient.on('error', err =>  {
  console.log(err.message);
});

All API is Promise-based. If request was successful then you will get payload as a parameter of callback function.

For getDatapoints method you should receive array of all datapoints:

[ { id: 1,
    length: 2,
    flags:
     { priority: 'low',
       communication: true,
       read: true,
       write: true,
       readOnInit: false,
       transmit: true,
       update: false },
    dpt: 'dpt9' },
  { id: 2,
    length: 1,
    flags:
     { priority: 'low',
       communication: true,
       read: false,
       write: true,
       readOnInit: false,
       transmit: true,
       update: false },
    dpt: 'dpt5' } ]

For getDescription you will receive description of specified datapoint

{ id: 1,
  value:
   { id: 1,
     dpt: 'dpt9',
     flags:
      { priority: 'low',
        communication: true,
        read: true,
        write: true,
        readOnInit: false,
        transmit: true,
        update: false },
     length: 2 } }

For getValue/getStoredValue you will receive object with fields id and value

{ id: 999,
  value: 'Hello, friend',
  raw:
   { type: 'Buffer',
     data: [ 72, 101, 108, 108, 111, 44, 32, 102, 114, 105, 101, 110, 100, 0 ] } }

For setValue/readValue you will receive object with field id

{ id: 1}

setProgramming mode callback your function without data

readValues accepts array of datapoints. It will send only one request to BAOS module and BAOS will send multiple read requests to KNX bus.

setValues accepts array of objects: [{id: 1, value: true}, {id: 2, value: 23.5}]