mirror of
https://github.com/servo/servo.git
synced 2025-08-03 04:30:10 +01:00
68 lines
2.4 KiB
HTML
68 lines
2.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<title>Descriptor info</title>
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<body>
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<input id="service" type="text" autofocus placeholder="Bluetooth Service">
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<input id="characteristic" type="text" autofocus placeholder="Bluetooth Characteristic">
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<input id="descriptor" type="text" autofocus placeholder="Bluetooth Descriptor">
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<button type="button" onclick="onButtonClick()">Get Descriptor Info</button>
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<pre id="log"></pre>
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<script>
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function onButtonClick() {
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clear();
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var serviceUuid = document.getElementById('service').value;
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if (serviceUuid.startsWith('0x'))
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serviceUuid = parseInt(serviceUuid, 16);
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var characteristicUuid = document.getElementById('characteristic').value;
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if (characteristicUuid.startsWith('0x'))
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characteristicUuid = parseInt(characteristicUuid, 16);
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var descriptorUuid = document.getElementById('descriptor').value;
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if (descriptorUuid.startsWith('0x'))
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descriptorUuid = parseInt(descriptorUuid, 16);
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try {
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log('Requesting Bluetooth Device...');
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var device = window.navigator.bluetooth.requestDevice({filters: [{services: [serviceUuid]}]});
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log('Connecting to GATTserver on device...');
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var server = device.gatt.connect();
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log('Getting Primary Service...');
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var primaryService = server.getPrimaryService(serviceUuid);
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log('Getting Characteristic...');
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var characteristic = primaryService.getCharacteristic(characteristicUuid);
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log('Getting Descriptor...');
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var descriptor = characteristic.getDescriptor(descriptorUuid);
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log('Descriptor found!');
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log('> Descriptor characteristic: ' + descriptor.characteristic.uuid);
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log('> Descriptor UUID: ' + descriptor.uuid);
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descriptor.readValue();
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log('> Descriptor value: ' + AsciiToDecimal(descriptor.value));
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} catch(err) {
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log(err);
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}
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}
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function clear() {
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document.getElementById("log").textContent = "";
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}
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function log(line) {
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document.getElementById("log").textContent += line + '\n';
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}
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function AsciiToDecimal(bytestr) {
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var result = [];
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for(i = 0; i < bytestr.length; i++) {
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result[i] = bytestr[i].charCodeAt(0) ;
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}
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return result;
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}
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</script>
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</body>
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</html>
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