How to use the @abandonware/noble.addListener function in @abandonware/noble
To help you get started, we’ve selected a few @abandonware/noble examples, based on popular ways it is used in public projects.
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LedgerHQ / ledgerjs / packages / hw-transport-node-ble / src / platform.js View on Github 
export const availability: Observable = Observable.create(observer => {
const onAvailabilityChanged = e => {
observer.next(e === POWERED_ON);
};
noble.addListener("stateChanged", onAvailabilityChanged); // events lib?
observer.next(noble.state === POWERED_ON);
return () => {
noble.removeListener("stateChanged", onAvailabilityChanged);
};
});const onDiscover = peripheral => {
const { uuid: id } = peripheral;
const { localName } = peripheral.advertisement;
const name =
localName ||
(discoveredDevices[id] ? discoveredDevices[id].name : null);
discoveredDevices[id] = { peripheral, name };
log("ble-advertisement", id + " (" + String(name) + ")");
observer.next({
type: "add",
descriptor: peripheral,
device: { id, name }
});
};
noble.addListener("discover", onDiscover);
noble.startScanning(getBluetoothServiceUuids(), true);
return () => {
noble.removeListener("discover", onDiscover);
noble.stopScanning();
};
});function startBLEScanning(RED) {
RED.log.info(`[GenericBLE] Start BLE scanning`);
if (!onDiscover) {
onDiscover = onDiscoverFunc(RED);
}
noble.removeListener('stateChange', onStateChange);
noble.removeListener('discover', onDiscover);
noble.addListener('stateChange', onStateChange);
noble.addListener('discover', onDiscover);
if (noble.state === 'poweredOn') {
noble.startScanning([], true);
}
}function startBLEScanning(RED) {
RED.log.info(`[GenericBLE] Start BLE scanning`);
if (!onDiscover) {
onDiscover = onDiscoverFunc(RED);
}
noble.removeListener('stateChange', onStateChange);
noble.removeListener('discover', onDiscover);
noble.addListener('stateChange', onStateChange);
noble.addListener('discover', onDiscover);
if (noble.state === 'poweredOn') {
noble.startScanning([], true);
}
}@abandonware/noble
A Node.js BLE (Bluetooth Low Energy) central library.
