我已通过网络蓝牙API连接到设备。现在,我有一个十六进制字符串发送到设备:01113704B00000313233343132160506155001DB
。此十六进制字符串无法正确发送到设备。如何将此十六进制发送到设备?
我尝试使用十六进制数组缓冲区(NPM插件),并亲自编写了该方法。他们不起作用。
这是我的代码:
import React from 'react';
import './App.css';
const hexToArrayBuffer = require('hex-to-array-buffer')
function App() {
const openBLE = () => {
navigator.bluetooth.requestDevice({
filters: [{
services: ['6e400001-b5a3-f393-e0a9-e50e24dcca9e']
}]
})
.then(device => {
console.log('Begin to connect')
return device.gatt.connect()
})
.then(server => {
// Getting Battery Service...
console.log('Connect to GATT server')
return server.getPrimaryService('6e400001-b5a3-f393-e0a9-e50e24dcca9e');
})
.then(service => {
console.log('Get characteristic')
return service.getCharacteristic('6e400003-b5a3-f393-e0a9-e50e24dcca9e');
})
.then(characteristic => {
console.log('Write characteristic')
const buffer = hexToArrayBuffer('01113704B00000313233343132160506155001DB')
return characteristic.writeValue(buffer);
})
.catch(error => { console.log(error); });
}
return (
<div className="App">
<button onClick={ openBLE } >hello</button>
</div>
);
}
export default App;