@abandonware/eddystone-beacon-scanner
v3.0.1-2
Published
Scan for Eddystone beacon's using Node.js
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node-eddystone-beacon-scanner
Scan for Eddystone beacons using Node.js
Uses noble for BLE peripheral scanning, then attempts to parse discovered peripherals using the Eddystone Protocol Specification.
Setup
npm install eddystone-beacon-scanner
Examples
See examples folder.
Usage
var EddystoneBeaconScanner = require('eddystone-beacon-scanner');
Register event handlers
Found
Triggered when a beacon is first found.
EddystoneBeaconScanner.on('found', function(beacon) {
// ...
});
Updated
Triggered when a beacon advertisement detected.
EddystoneBeaconScanner.on('updated', function(beacon) {
// ...
});
Lost
Triggered when a beacon has not been detected for 5 seconds.
EddystoneBeaconScanner.on('lost', function(beacon) {
// ...
});
The beacon
object will have the following properties depending on the frame type:
URL
type
- Eddystone typetxPower
- Measured received power at 0 m in dBmurl
- (expanded) URL the beacon is broadcastingtlm
- TLM data, only present when interleaved broadcasts are used by the beaconrssi
- RSSI of discovered beacondistance
- Approximate distance from beacon
UID
type
- Eddystone typetxPower
- Measured received power at 0 m in dBmnamespace
- 10-byte ID Namespaceinstance
- 6-byte ID Instancetlm
- TLM data, only present when interleaved broadcasts are used by the beaconrssi
- RSSI of discovered beacondistance
- Approximate distance from beacon
TLM
tlm
version
- TLM versionvbatt
- Battery voltagetemp
- TemperatureadvCnt
- Advertising PDU countsecCnt
- Time since power-on or reboot
rssi
- RSSI of discovered beacondistance
- Approximate distance from beacon
Start scanning
Start scanning for Eddystone beacons, you can specify whether to allow duplicates (default is false).
You can also specify the grace period (time to wait before declaring the beacon as lost). Default is 5000 ms.
EddystoneBeaconScanner.startScanning(allowDuplicates, gracePeriod);
Note: the lost
event will only be triggered when allowDuplicates
is set to true.
Stop scanning
Stop scanning for Eddystone beacons.
EddystoneBeaconScanner.stopScanning();