离子BLE写入到其他设备
离子BLE写入到其他设备
提问于 2020-03-18 00:59:01
我的应用程序当前已连接到我正在尝试使用的设备。
日志:我们尝试发送的消息是"Hello“
⚡️ [log] - WE ARE CURRENTLY CONNECTED
To Native Cordova -> BLE writeWithoutResponse BLE46928892 ["options":
[027B18C5-15E6-86C1-ADDC-B2475099CDA0, 6E400001-B5A3-F393-E0A9-
E50E24DCCA9E, 6E400002-B5A3-F393-E0A9-E50E24DCCA9E, {
0 = 72;
1 = 69;
2 = 76;
3 = 76;
4 = 79;
}]]
2020-03-17 16:16:19.223013-0400 App[5985:1842762] writeWithoutResponse
2020-03-17 16:16:19.223160-0400 App[5985:1842762] getData
2020-03-17 16:16:19.223308-0400 App[5985:1842762] Looking for
6E400002-B5A3-F393-E0A9-E50E24DCCA9E with properties 4我遇到的问题是BLE中的写入功能。
(method) BLE.write(deviceId: string, serviceUUID: string, characteristicUUID: string, value:
ArrayBuffer): Promise<any>.TS
import { BLE } from '@ionic-native/ble/ngx';
devices:any[] = [];
id;
constructor(
public plt: Platform,
private route: ActivatedRoute,
private ble: BLE,
private ngZone: NgZone,
private cd: ChangeDetectorRef,
) { }
connect(count:number){
this.ble.connect(this.devices[count].id).subscribe
(peripheralData => {
console.log(peripheralData);
},
peripheralData => {
console.log('disconnected');
});;
this.id = this.devices[count].id;
}
write(){
if (this.ble.isConnected){
console.log("WE ARE CURRENTLY CONNECTED");
var string = "HELLO"
var array = new Uint8Array(string.length);
for (var x = 0, l = string.length; x < l; x++)
{array[x] = string.charCodeAt(x);}
this.ble.writeWithoutResponse(this.id, "6E400001-B5A3-F393-E0A9-
E50E24DCCA9E",
"6E400002-B5A3-F393-E0A9-E50E24DCCA9E", array);
}
else{
console.log("WE ARE NOT CONNECTED");
}
}编辑:我将其转换为两个函数，这样我就不必再担心promise错误了。日志显示我们正在调用该函数，并且我们已连接到BLE设备。尽管如此，消息实际上并没有发送出去。
回答 1
Stack Overflow用户
发布于 2020-03-18 05:07:48
它不是很漂亮，但它起作用了
.TS
import { BLE } from '@ionic-native/ble/ngx';
export class AddDeviceComponent implements OnInit {
routeParams;
SCAN_RESULT_COUNT = 20;
scanResult;
id;
constructor(
public plt: Platform,
private route: ActivatedRoute,
private ble: BLE,
private ngZone: NgZone,
private cd: ChangeDetectorRef,
) { }
connect(count:number){
this.ble.connect(this.devices[count].id).subscribe
(peripheralData => {
console.log(peripheralData);
},
peripheralData => {
console.log('disconnected');
});;
this.id = this.devices[count].id;
}
write(){
if (this.ble.isConnected)
{
console.log("WE ARE CURRENTLY CONNECTED");
var string = "HELLO"
var array = new Uint8Array(string.length);
for (var x = 0, l = string.length; x < l; x++) {
array[x] = string.charCodeAt(x);
}
// this is what needed to be done
this.ble.writeWithoutResponse(this.id, "6E400001-B5A3-F393-E0A9-
E50E24DCCA9E".toLowerCase(),
"6E400002-B5A3-F393-E0A9-E50E24DCCA9E".toLowerCase(), array.buffer);
}
else{
console.log("WE ARE NOT CONNECTED HELP");
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/60726926
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