<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_44698973的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_44698973</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_44698973]]></copyright><item><title><![CDATA[Bluedroid 安卓蓝牙固定BLE MAC地址]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/145571659</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/145571659</guid><author>qq_44698973</author><pubDate>Tue, 11 Feb 2025 14:41:34 +0800</pubDate><description><![CDATA[Bluedroid 安卓蓝牙固定BLE MAC地址。]]></description><category></category></item><item><title><![CDATA[XXX5430+XXX1023方案 部分蓝牙耳机无法正常连接问题]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/145548199</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/145548199</guid><author>qq_44698973</author><pubDate>Mon, 10 Feb 2025 16:17:49 +0800</pubDate><description><![CDATA[蓝牙耳机无法正常连接问题：由于蓝牙频偏异常导致。]]></description><category></category></item><item><title><![CDATA[BlueZ Obex set “UTF-16BE” to “UTF-8”]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/145323270</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/145323270</guid><author>qq_44698973</author><pubDate>Thu, 23 Jan 2025 14:41:51 +0800</pubDate><description><![CDATA[我们在bluez5使用obex时可能会遇到“UTF-16BE” to “UTF-8”不支持导致无法进行文件传输的报错。]]></description><category></category></item><item><title><![CDATA[如何使用NRF Connect设置为BLE Slave角色（广播+连接+发送数据）]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/140855125</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/140855125</guid><author>qq_44698973</author><pubDate>Thu, 01 Aug 2024 19:11:54 +0800</pubDate><description><![CDATA[如何使用NRF Connect设置为BLE Slave]]></description><category></category></item><item><title><![CDATA[RK3562+RTL8821CS 蓝牙无法重复打开（刷机之后只能打开一次）]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/140062935</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/140062935</guid><author>qq_44698973</author><pubDate>Sat, 29 Jun 2024 13:52:45 +0800</pubDate><description><![CDATA[RK3562+RTL8821CS 蓝牙无法重复打开问题记录]]></description><category></category></item><item><title><![CDATA[好用的蓝牙HID测试工具]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/139574907</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/139574907</guid><author>qq_44698973</author><pubDate>Mon, 10 Jun 2024 11:36:02 +0800</pubDate><description><![CDATA[记录一款APP，可用于做蓝牙 HID Device端，模拟蓝牙鼠标，键盘等。]]></description><category></category></item><item><title><![CDATA[高通平台优化蓝牙打开时间]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/139574360</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/139574360</guid><author>qq_44698973</author><pubDate>Mon, 10 Jun 2024 11:07:38 +0800</pubDate><description><![CDATA[高通WCN39XX及以上系列蓝牙打开时间优化]]></description><category></category></item><item><title><![CDATA[一个实例说明蓝牙Sniff mode对系统耗流影响有多大]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/138371091</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/138371091</guid><author>qq_44698973</author><pubDate>Wed, 01 May 2024 14:03:25 +0800</pubDate><description><![CDATA[我们知道，当没有数据需要传输的时候，两个已连接的蓝牙设备之间也需要每两个slots完成一次POLL packet - NULL packet exchange，以维持ACL连接。Sniff mode通过增加POLL packet - NULL packet exchange的间隔时间（即Sniff Interval）来减少两个设备之间的通信次数，让两个设备可以在间隔时间内进入低功耗状态，从而达到节能的目的。由于只是保持了连接并没有实际通信，这个耗流数据其实是比较高的，我们一度怀疑WCN芯片并没有正常休眠。]]></description><category></category></item><item><title><![CDATA[高通Android平台如何修改btsnoop文件大小buffer的限制]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/136241551</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/136241551</guid><author>qq_44698973</author><pubDate>Thu, 22 Feb 2024 19:12:28 +0800</pubDate><description><![CDATA[高通平台btsnoop默认保存在2个20M大小的文件，当获取log时间较长或传输文件较大时则会超过buffer的限制。可参考如下方案调整buffer]]></description><category></category></item><item><title><![CDATA[高通平台如何测试使用BLE Long Range]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/131259805</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/131259805</guid><author>qq_44698973</author><pubDate>Sat, 17 Jun 2023 14:18:43 +0800</pubDate><description><![CDATA[在NRF Connect中广播间隔最低为100ms，TX poewer Level的范围为,这就会存在限制，比如需要降低广播间隔已被更快搜到，或者想增大TX power level以支持更远距离，那么可能需要自己开发apk，但是这样比较耗时。这是一篇价值$500的博客：之前内部没有用过BLE Long Range，而客户需要快速得到支持情况的结论，内部平台上支持BLE Long Range的提高通case需要收费$500.其实现在看这$500花的着实不值。高通建议拉到20dBm.]]></description><category></category></item><item><title><![CDATA[[Yoctol][bluez]如何升级blueZ版本]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/130448024</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/130448024</guid><author>qq_44698973</author><pubDate>Sun, 30 Apr 2023 13:41:49 +0800</pubDate><description><![CDATA[参考Yoctol官网链接：poky - Poky Build Tool and Metadata]]></description><category></category></item><item><title><![CDATA[[bluedroid]高通平台如何禁用APTX]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/130440057</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/130440057</guid><author>qq_44698973</author><pubDate>Sat, 29 Apr 2023 13:49:39 +0800</pubDate><description><![CDATA[aptx是一种技术，全名就叫无损传输技术，也就是一种传输手段。它就像一个音频编解码器，它主要是用来解决一些蓝牙传输中的各种问题。但是说的无损，其实也是同样有损的，但是aptx能让音频延时的情况大大减少。Apt-X是一种基于子带ADPCM（SB-ADPCM）技术的数字音频压缩算法。原始算法由Stephen Smyth 博士于20世纪80年代提出。由Audio Processing Technology（现已被CSR合并）公司发展并命名为apt-X。最初用于专业音频与广播领域。]]></description><category></category></item><item><title><![CDATA[[Bluedroid] 蓝牙重新打开之后蓝牙鼠标(HOGP)大概率无法自动回连]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/130155922</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/130155922</guid><author>qq_44698973</author><pubDate>Fri, 14 Apr 2023 16:49:09 +0800</pubDate><description><![CDATA[蓝牙重新打开之后蓝牙鼠标(HOGP)大概率无法自动回连]]></description><category></category></item><item><title><![CDATA[Android7 AT指令修改BT MAC地址]]></title><link>https://blog.youkuaiyun.com/qq_44698973/article/details/125245199</link><guid>https://blog.youkuaiyun.com/qq_44698973/article/details/125245199</guid><author>qq_44698973</author><pubDate>Sun, 12 Jun 2022 15:02:14 +0800</pubDate><description><![CDATA[高通Android7 AT指令修改蓝牙MAC地址不生效问题]]></description><category></category></item></channel></rss>