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Using Bluetooth on mobile

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This commit is contained in:
aronmal 2022-09-25 00:28:29 +02:00
parent 7d0db309eb
commit d44c23f815
Signed by: aronmal
GPG key ID: 816B7707426FC612
7 changed files with 2200 additions and 6382 deletions
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111
frontend/src/Bluetooth.tsx Normal file
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function Bluetooth() {
const connectToDevice = async () => {
if (!navigator.bluetooth)
console.log('Web Bluetooth is not available!');
navigator.bluetooth
.requestDevice({
filters: [
{ namePrefix: "Chromecast Remote" }
],
optionalServices: ["battery_service"],
})
.then(device => {
console.log(device);
// console.log(device.id, device.name, device.gatt);
// Set up event listener for when device gets disconnected.
device.addEventListener('gattserverdisconnected', onDisconnected);
console.log(1)
// Attempts to connect to remote GATT Server.
const gatt = device.gatt
if (!gatt)
throw new Error('no gatt');
return gatt.connect();
})
.then(server => {
console.log(2)
console.log(server)
// Getting Battery Service…
return server.getPrimaryService('battery_service');
})
.then(service => {
console.log(3)
// Getting Battery Level Characteristic…
return service.getCharacteristic('battery_level');
// return service.getCharacteristic(0x2a19);
})
.then(characteristic => {
console.log(4)
// Reading Battery Level…
return characteristic.readValue();
})
.then(value => {
console.log(5)
console.log(`Battery percentage is ${value.getUint8(0)}`);
})
.catch(error => { console.log(error); });
}
const connectToDevice2 = async () => {
if (!navigator.bluetooth)
console.log('Web Bluetooth is not available!');
let device = await navigator.bluetooth
navigator.bluetooth
.requestDevice({
filters: [
{ namePrefix: "Chromecast Remote" }
],
optionalServices: ["device_information"],
})
.then(device => {
// Set up event listener for when device gets disconnected.
device.addEventListener('gattserverdisconnected', onDisconnected);
console.log(1)
// Attempts to connect to remote GATT Server.
const gatt = device.gatt
if (!gatt)
throw new Error('no gatt');
return gatt.connect();
})
.then(server => {
console.log(2)
console.log(server)
// Getting Battery Service…
return server.getPrimaryService('device_information');
})
.then(service => {
console.log(3)
// Getting Battery Level Characteristic…
return service.getCharacteristic('manufacturer_name_string');
})
.then(characteristic => {
console.log(4)
// Reading Battery Level…
return characteristic.readValue();
})
.then(value => {
console.log(5)
let decoder = new TextDecoder('utf-8');
console.log(decoder.decode(value));
})
.catch(error => { console.log(error); });
}
const onDisconnected = (event: any) => {
// alert("Device Disconnected");
// console.log(event);
const device = event.target;
console.log(`Device "${device.name}" is disconnected.`);
}
return (
<>
<button className="bluetooth" onClick={connectToDevice2}>CONNECT</button>
</>
)
}
export default Bluetooth