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用Packet Sniffer抓包,没有ADV_CONNECT_REQ请求发起!

Other Parts Discussed in Thread: CC2540

1,现在我手上有一个旧的外设,CC2540芯片的。设备与APP连接是正常的,抓包截图如下:

2,我自己开发的设备,与手机APP连接不了,截图如下:

我自己开发的设备与手机APP连接,手机APP没有发起ADV_CONNECT_REQ请求,请问什么原因,谢谢帮助解答。