iPhone corebluetooth中央管理器将数据发送到外设 [英] iPhone corebluetooth central Manager send data to peripheral
问题描述
我想将数据从iPhone发送到蓝牙设备，然后发现并连接。
我指的是这个教程连接。
I want to send data from iPhone to a bluetooth device which get discovered and connects. I am referring this tutorial to connect.
我无法将数据发送到与外部附件框架连接的外部蓝牙设备。
I am not able to send data to external bluetooth device which is connected as we do with External Accessory framework.
我正在使用iPhone5，因为它有蓝牙4.0
I am using iPhone5 as it has Bluetooth 4.0
推荐答案
在核心蓝牙中，您需要使用这些特性进行通信。在外部附件框架中没有基于标准流的API，我不知道任何实现类似内容的开源库。
In Core Bluetooth you need to use the characteristics for communication. There is no standard stream based API like in the External Accessory Framework and I don't know of any open source libraries that implement something like that.
基本操作
外设 - >中央：
- Central订阅特征（带有通知或指示）
- 外围设备接收订阅的回调，因此知道中央正在侦听
- 外围更新特征
- Central收到特征更新通知
- Central subscribes to characteristic (either with notifications or indications)
- Peripheral receives the subscribed callback so knows that the central is listening
- Peripheral updates characteristic
- Central receives characteristic updated notification
Central - > Peripheral：
Central -> Peripheral:
- 中央写入特征
- 外设接收写请求更新
您可以实现的实际速度取决于各种因素。有迹象表明数据永远不会丢失（如TCP），但通知没有这样的保证（如UDP）。
The actual speed you can achieve depends on various factors. With indications the data is never lost (like TCP) but notifications don't have such guarantees (like UDP).
更多信息
我建议您查看官方核心蓝牙编程指南，并专注于
I suggest you check out the official Core Bluetooth Programming Guide and concentrate on the
- Performing common Central Role tasks
- Performing common Peripheral Role tasks
部分。但更好的是按原样研究整个指南。有关工作示例，请查看Apple的 BTLE Transfer 示例。
sections. But better would be studying the whole guide as is. For a working example, check out the BTLE Transfer example from Apple, as well.
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