@abandonware/eddystone-beacon-scanner 中文文档教程

Question

node-eddystone-beacon-scanner

使用 Node.js 扫描 Eddystone 信标 使用

noble 用于 BLE 外围设备扫描，然后尝试使用 Eddystone 协议规范。

Setup

npm install eddystone-beacon-scanner

Examples

请参阅 examples 文件夹。

Usage

var EddystoneBeaconScanner = require('eddystone-beacon-scanner');

Register event handlers

Found

首次发现信标时触发。

EddystoneBeaconScanner.on('found', function(beacon) {
  // ...
});

Updated

当检测到信标广告时触发。

EddystoneBeaconScanner.on('updated', function(beacon) {
  // ...
});

Lost

当 5 秒内未检测到信标时触发。

EddystoneBeaconScanner.on('lost', function(beacon) {
  // ...
});

beacon 对象将根据帧类型具有以下属性：

URL

• type - Eddystone type
• txPower - Measured received power at 0 m in dBm
• url - (expanded) URL the beacon is broadcasting
• tlm - TLM data, only present when interleaved broadcasts are used by the beacon
• rssi - RSSI of discovered beacon
• distance - Approximate distance from beacon

UID

• type - Eddystone type
• txPower - Measured received power at 0 m in dBm
• namespace - 10-byte ID Namespace
• instance - 6-byte ID Instance
• tlm - TLM data, only present when interleaved broadcasts are used by the beacon
• rssi - RSSI of discovered beacon
• distance - Approximate distance from beacon

TLM

• tlm
• version - TLM version
• vbatt - Battery voltage
• temp - Temperature
• advCnt - Advertising PDU count
• secCnt - Time since power-on or reboot
• rssi - RSSI of discovered beacon
• distance - Approximate distance from beacon

Start scanning

开始扫描 Eddystone 信标，您可以指定是否允许重复（默认为 false）。

您还可以指定宽限期（在声明信标丢失之前等待的时间）。 默认值为 5000 毫秒。

EddystoneBeaconScanner.startScanning(allowDuplicates, gracePeriod);

注意 lost 事件只会在allowDuplicates 设置为true 时触发。

Stop scanning

停止扫描 Eddystone 信标。

EddystoneBeaconScanner.stopScanning();