什么是＆QUOT;可靠的写入＆QUOT;在BLE？ [英] What is "reliable write" in BLE?

问题描述

在Android的BLE API（ BluetoothGatt ）有一些处理方法是可靠写

In Android's BLE API (BluetoothGatt) there are methods that deal with reliable writes:

public boolean beginReliableWrite ()

public void abortReliableWrite (BluetoothDevice mDevice)

public boolean executeReliableWrite ()

还有一个回调（在<一个href=\"https://developer.android.com/reference/android/bluetooth/BluetoothGattCallback.html#onReliableWriteCompleted%28android.bluetooth.BluetoothGatt,%20int%29\"相对=nofollow> BluetoothGattCallback ）：

public void onReliableWriteCompleted (BluetoothGatt gatt, int status)

我找不到任何文档。它是什么？它是如何从正常（不可靠？）写道不同？

I can't find any documentation on that. What is it? How is it different from "normal" (unreliable?) writes?

推荐答案

当你执行一个可靠写外设证实写入是否成功与否 - 您将通过回调接收状态。与正常的写有没有确认。

When you execute a reliable write the peripheral confirms whether the write was successful or not - you will receive the status via the callback. With a normal write there is no confirmation.

例如，考虑一个恒温器。它将具有用于设定温度的特性。针对该特性的可接受范围，可以说10到35（我说摄氏度）。如果尝试将其与可靠写设置为45，那么你会得到通过回调错误状态。随着'不可靠的'写你就没有通知。

Consider a thermostat for example. It would have a characteristic for temperature set point. The acceptable range for that characteristic may be say 10 to 35 (I am talking celsius). If you attempt to set it to 45 with a reliable write then you would get an error status via the callback. With an 'unreliable' write you would have no notification.

另一种情况可能是那里的蓝牙外设有多个控制点。当数据被写入特性的车库门控制器可能会关闭。如果试图向关闭门时保护光束被打破的状态回调可能表明。回调也表明，当门被成功关闭。

Another case may be where the Bluetooth peripheral had multiple control points. A garage door controller may close when a value is written to a characteristic. If an attempt is made to close the door when a protection beam is broken the status callback could indicate that. The callback could also indicate when the door was successfully closed.

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