ble-shelly-scanner.js

/**
 * This script uses the BLE scan functionality in scripting
 * Will look for Shelly BLU devices fingerprints in BLE advertisements
 * Prints device name and address
 */

// Shelly BLU devices:
// SBBT - Shelly BLU Button
// SBDW - Shelly BLU DoorWindow

let ALLTERCO_DEVICE_NAME_PREFIX = ["SBBT", "SBDW", "SBMO"];

let ALLTERCO_MFD_ID_STR = "0ba9";
let BTHOME_SVC_ID_STR = "fcd2";

const SCAN_PARAM_WANT = {
  duration_ms: BLE.Scanner.INFINITE_SCAN,
  active: true,
}

let SHELLY_BLU_CACHE = {};

function scanCB(ev, res) {
  if (ev !== BLE.Scanner.SCAN_RESULT) return;
  // skip if there is no service_data member
  if (typeof res.service_data === 'undefined' || typeof res.service_data[BTHOME_SVC_ID_STR] === 'undefined') return;
  // skip if we have already found this device
  if (typeof SHELLY_BLU_CACHE[res.addr] !== 'undefined') return;
  if (typeof res.local_name !== 'string') return;
  let shellyBluNameIdx = 0;
  for (shellyBluNameIdx in ALLTERCO_DEVICE_NAME_PREFIX) {
    if (res.local_name.indexOf(ALLTERCO_DEVICE_NAME_PREFIX[shellyBluNameIdx]) === 0) {
      console.log('New device found:');
      console.log('Address: ', res.addr, ' Name: ', res.local_name);
      SHELLY_BLU_CACHE[res.addr] = res.local_name;
    }
  }
}

function init() {
  // get the config of ble component
  const BLEConfig = Shelly.getComponentConfig("ble");

  // exit if the BLE isn't enabled
  if (!BLEConfig.enable) {
    console.log(
      "Error: The Bluetooth is not enabled, please enable it from settings"
    );
    return;
  }

  // check if the scanner is already running
  if (BLE.Scanner.isRunning()) {
    console.log("Info: The BLE gateway is running, the BLE scan configuration is managed by the device");
  }
  else {
    // start the scanner
    const bleScanner = BLE.Scanner.Start(SCAN_PARAM_WANT);

    if (!bleScanner) {
      console.log("Error: Can not start new scanner");
    }
  }

  // subscribe a callback to BLE scanner
  BLE.Scanner.Subscribe(scanCB);
}

init();