我们正在使用一种每秒都能提供原始数据的脑电图设备。使用时
nativescript-bluetooth
我试着通过阅读
bluetooth.read
```
bluetooth.connect({
UUID: uuid,
onConnected: (peripheral) => {
peripheral.services.forEach((service) => {
console.log("service found: " + JSON.stringify(service));
this.deviceServiceData = service;
});
setTimeout(() => {
this.readDataFromDevice(this.deviceServiceData, uuid);
this.notify(this.deviceServiceData, uuid);
}, 1000);
},
onDisconnected: function (peripheral) {
console.log("Periperhal disconnected with UUID: " + peripheral.UUID);
}
});
}
notify(service, uuid) {
bluetooth.startNotifying({
peripheralUUID: uuid,
serviceUUID: service.UUID,
characteristicUUID: service.characteristics[0].UUID,
onNotify: function (result) {
console.log("read: " + JSON.stringify(result));
}
}).then(function () {
console.log("subscribed for notifications");
}, function (err) {
console.log("notify error error: " + err);
});
}
readDataFromDevice(service, uuid) {
bluetooth.read({
peripheralUUID: uuid,
serviceUUID: service.UUID,
characteristicUUID: service.characteristics[0].UUID,
}).then((result) => {
var data = new Uint8Array(result.value);
console.log(data);
}, function (err) {
console.log("read error: " + err);
});
}
How should I get the values generated by the device every second? Do I call `readDataFromDevice` at every time interval?
