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63 lines
2.7 KiB
HTML
63 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<title>Characteristic 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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<button type="button" onclick="onButtonClick()">Get Characteristic Info</button>
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<pre id="log"></pre>
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<script src="bluetooth_functions.js"></script>
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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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var characteristicUuid = document.getElementById('characteristic').value;
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if (!serviceUuid || !characteristicUuid) {
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return log('All input field must be filled!');
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}
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if (serviceUuid.startsWith('0x'))
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serviceUuid = parseInt(serviceUuid, 16);
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if (characteristicUuid.startsWith('0x'))
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characteristicUuid = parseInt(characteristicUuid, 16);
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log('Requesting Bluetooth Device...');
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window.navigator.bluetooth.requestDevice({filters: [{services: [serviceUuid]}]})
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.then(device => {
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log('Connecting to GATT Server on device...');
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return device.gatt.connect();
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})
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.then(server => {
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log('Getting Primary Service...');
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return server.getPrimaryService(serviceUuid);
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})
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.then(service => {
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log('Getting Characteristic...');
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return service.getCharacteristic(characteristicUuid);
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})
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.then(characteristic => {
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log('Characteristic found!');
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log('> Characteristic service: ' + characteristic.service.uuid);
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log('> Characteristic UUID: ' + characteristic.uuid);
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log('> Broadcast: ' + characteristic.properties.broadcast);
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log('> Read: ' + characteristic.properties.read);
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log('> Write w/o response: ' + characteristic.properties.writeWithoutResponse);
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log('> Write: ' + characteristic.properties.write);
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log('> Notify: ' + characteristic.properties.notify);
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log('> Indicate: ' + characteristic.properties.indicate);
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log('> Signed Write: ' + characteristic.properties.authenticatedSignedWrites);
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log('> Queued Write: ' + characteristic.properties.reliableWrite);
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log('> Writable Auxiliaries: ' + characteristic.properties.writableAuxiliaries);
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return characteristic.readValue();
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})
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.then(value => {
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log('> Characteristic value: ' + asciiToDecimal(value));
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})
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.catch(err => {
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log(err);
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});
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}
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</script>
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</body>
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</html>
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