mirror of https://github.com/espruino/BangleApps
53 lines
1022 B
JavaScript
53 lines
1022 B
JavaScript
// ble-scanner
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// Scan the airwaves every three seconds (which seems safe for a large number of devices)
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// Using the menu feature, display a scrollable list of BLE devices on the watch
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// Dummy menu item to display until we find something
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const NODEVICE = 'No devices found';
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const SCAN_INTERVAL = 3000;
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const menu = {
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};
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menu[NODEVICE] = {
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value : "",
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onchange : () => {}
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};
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function draw() {
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E.showMenu(menu);
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}
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function scan() {
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NRF.findDevices(devices => {
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for (let device of devices) {
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// Only display devices that advertise a name
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if (device.name) {
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// Remove no devices found message if it is present
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if (menu[NODEVICE]) {
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delete menu[NODEVICE];
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}
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menu[device.name] = {
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value : device.rssi,
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onchange : () => {}
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};
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}
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}
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draw();
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}, { active: true });
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}
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function waitMessage() {
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E.showMessage('scanning');
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}
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scan();
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waitMessage();
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setInterval(scan, SCAN_INTERVAL);
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