[UWP]蓝牙LE - 特征WriteWithoutResponse - 如何检查传输何时完成？ [英] [UWP] Bluetooth LE - Characteristic WriteWithoutResponse - how to check when transfer is finished?

问题描述

您好！

为了在BLE上获得更多吞吐量，我想使用"WriteWithoutResponse"并发送以特征写入块分割的更大数据包。但如果我这样写：

To get more throughput on BLE I want to use a "WriteWithoutResponse" and send bigger data packets splitted up in chunks of characteristic writes. But if I make a write like this:

await Characteristics.Characteristic.WriteValueAsync（writeBuffer，GattWriteOption.WriteWithoutResponse）;

await Characteristic.Characteristic.WriteValueAsync(writeBuffer, GattWriteOption.WriteWithoutResponse);

该方法立即返回并且做一些"魔术"在引擎盖下缓冲。我的api电话立即完成，但无线电转接仍在继续。


如果我执行"WriteWithResponse"只有在传输数据包并且传回响应时，该方法才会返回。但是使用"WriteWithoutResponse"我无法控制我的数据吞吐量。


等待任务完成似乎不是解决方案。

the method immediately returns and does some "magic" buffering under the hood. My api calls are finished immediately but the transfer over the air is still going on.
If I do a "WriteWithResponse" the method returns only when the packet is transfered and the response is transfered back. But with a "WriteWithoutResponse" I can not control my data throughput.
Waiting for the task to finish seems not to be a solution for this.

有没有人在这里有什么想法和如何ckeck转移是通过空气完成的吗？

这是一个错误还是这个？

Has anybody any Ideas whats going on here and how to ckeck when the transfer is finished over the air??
Is this a bug or is this wanted?

谢谢提前，

Joachim

推荐答案

嗨Joachim ，

这是例外行为。您可以参考

document 。作为其名称，WriteWithoutResponse是一种使用write而没有响应过程的写操作。所以你不知道这个过程什么时候结束。

This is excepted behavior. You could refer the document. As its name, WriteWithoutResponse is a kind of write operation that used write without response procedure. So you will not know when the process is finished.

< span style ="font-size：10.5pt; font-family：'Segoe UI'，sans-serif;颜色：＃454545; background：white">如果需要检查传输是否已完成，则可能需要使用WriteWithResponse 。

最好的问候，

Roy

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