I am trying to discover a bluetooth device and connect to it through the use of CBCentralManager. The device is a headset. It can be discovered through bluetooth scan on the phone. The device name is "A1-25". When I connect "A1-25" directly from phone bluetooth settings, I can play songs with it, it's working fine.
However, when I started scanning peripherals using CBCentralManager. I can't see a peripheral named "A1-25". But rather, I saw a peripheral named "EQ_Test_llyan". But before, when I scan nearby devices from the bluetooth settings, "EQ_Test_llyan" did not come out.
2017-12-13 16:35:07.233021+0800 Test[1405:500801] started scanning
2017-12-13 16:35:17.469375+0800 Test[1405:500801] discovered peripheral with name EQ_Test_llyan advertisementData:{
kCBAdvDataIsConnectable = 1;
kCBAdvDataLocalName = "EQ_Test_llyan";
kCBAdvDataManufacturerData = <b0024551 5f544553 54>;
}
2017-12-13 16:35:17.470672+0800 Test[1405:500801] connecting with device!!!!!!!
2017-12-13 16:35:17.654884+0800 Test[1405:500801] connected to peripheral name:EQ_Test_llyan id:7326E741-BF68-D9E8-D7A6-5F27227685A7
2017-12-13 16:35:17.656526+0800 Test[1405:500801] discovering services for peripheral name:EQ_Test_llyan
2017-12-13 16:35:18.193311+0800 Test[1405:500801] discovered services:(
) for peripheral name:EQ_Test_llyan
The peripheral "EQ_Test_llyan" has no services (see above log), so I can't communicate with it. Now, when I went back to the bluetooth devices in the phone settings I am now connected to "EQ_Test_llyan", but not to "A1-25". Now, I try to play the music, the sound does not come out from the headset.
When I turned off the headset, I will be disconnected from "EQ_Test_llyan" and "A1-25" will be gone. Therefore I conclude that "EQ_Test_llyan" and "A1-25" comes from the same device.
Take note that I can connect to both at the same time. I will just connect to "EQ_Test_llyan" programmatically, then it will appear on the settings. Then I manually connect to "A1-25" from the phone settings. It will be like what it shows on the picture below. When I play the music, I can still hear sound coming out from headset. So, it's working fine as long as I am connected to "A1-25", but not to "EQ_Test_llyan" alone.
So my questions are:
- Is CBPeripheral referring to the actual device? Because if it is, why can't I scan "A1-25" but I can scan "EQ_Test_llyan"?
- Take note that when the phone is connected to "A1-25", it has an "i" beside it, this means that the connection can be terminated. But when the phone is connected to "EQ_Test_llyan", there's no "i" beside it. So, it can't be disconnected unless you turned off the device. So, what's the difference between the two? Is "AI-25" the real device, while "EQ_Test_llyan" is just a connection? I don't understand.
