Re: Bluetooth-dev Digest, Vol 12, Issue 21
Re: Bluetooth-dev Digest, Vol 12, Issue 21
- Subject: Re: Bluetooth-dev Digest, Vol 12, Issue 21
- From: Don Clark <email@hidden>
- Date: Mon, 16 Mar 2015 10:47:09 -0400
- Acceptlanguage: en-US
- Thread-topic: Bluetooth-dev Digest, Vol 12, Issue 21
Yes, I see this fairly frequently. I’m also using a Nordic chip, but it’s
an nRF51822. I’ve added code that sees this disconnect and retries, but
its’a real pain, and I assume that it’s caused by some timing issue
between Core Bluetooth and the device.
Don
On 2/7/15, 3:00 PM, "email@hidden"
<email@hidden> wrote:
>Date: Fri, 06 Feb 2015 16:35:16 -0600
>From: Justin Cooper <email@hidden>
>To: "email@hidden" <email@hidden>
>Subject: peripheral disconnects when discovering services
>Message-ID:
> <CAOkf_k-D5hsGYY1t1VdLb7ADZNwU0=6LvBJyATcM-EqOodj=email@hidden>
>Content-Type: text/plain; charset="utf-8"
>
>Hello!
>
>
>I am having an intermittent issue, where I get an unexpected disconnect
>from our hardware peripheral (which uses the Nordic nrf8001 chip) about 1
>out of 20 times.
>
>The disconnect always happens at exactly the same place. Here is my
>connection sequence:
>
> -
>
> central.scanForPeripheralsWithServices([serviceUUIDUART], options: nil)
> -
>
> didDiscoverPeripheral -> look for matching name in advertisementData,
>if
> found continue with:
> -
>
> store a reference to peripheral as myPeripheral
> -
>
> central.connectPeripheral(peripheral, options: nil)
> -
>
> central.stopScan()
> -
>
> wait for didConnectPeripheral then call
>myPeripheral?.discoverServices([
> serviceUUIDUART])
>
>
>Right here is where it fails, again about 1 out of 20 times.
>
>I've posted my debug output log and the error code I receive in
>didDisconnectPeripheral.
>
>
>This test is running in a loop, by the way, where we connect, discover
>services, send and receive data, then disconnect. Then we wait for, say,
>6
>second and start the loop over.
>
>
>Has anyone else seen errors like this when connecting?
>
>
>
>*Found Peripheral 50000 <__NSConcreteUUID 0x1742250a0>
>36DC3DDA-9384-D02F-BF95-12527501BB86*
>
>*connected to peripheral <CBPeripheral: 0x1700f0d00, identifier =
>36DC3DDA-9384-D02F-BF95-12527501BB86, name = 50000, state = connected>*
>
>*my peripheral is <CBPeripheral: 0x1700f0d00, identifier =
>36DC3DDA-9384-D02F-BF95-12527501BB86, name = 50000, state = connected>*
>
>*going to discover services for Snail and VIU*
>
>*disconnected from peripheral <CBPeripheral: 0x1700f0d00, identifier =
>36DC3DDA-9384-D02F-BF95-12527501BB86, name = 50000, state = disconnected>
>for reasons Error Domain=CBErrorDomain Code=10 "The connection has failed
>unexpectedly." UserInfo=0x17426f980 {NSLocalizedDescription=The connection
>has failed unexpectedly.}*
>
>
>
>Thanks!
>
>
>*Justin*
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