iPhone 连接间隔限制问题
时间:10-02
整理:3721RD
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用CC2541去连接iPhone,发现连接不管我的连接参数设置为什么都无法更新,连接上之后通过示波器查看连接间隔一直是30ms.
iPhone有这个限制吗?
苹果对connection interval的要求, 其实还有其他的连接参数要求, 比如slave latency, supervision timeout, 如果不满足这些, IOS设备会拒绝.
The connection parameter request may be rejected if it does not comply with all of these rules:
Interval Max * (Slave Latency + 1) ≤ 2 seconds
Interval Min ≥ 20 ms
Interval Min + 20 ms ≤ Interval Max
Slave Latency ≤ 4
connSupervisionTimeout ≤ 6 seconds
Interval Max * (Slave Latency + 1) * 3 < connSupervisionTimeout
可以参考 http://www.deyisupport.com/question_answer/wireless_connectivity/bluetooth/f/103/t/18625.aspx