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sandeepmistry / node-bleacon

A Node.js library for creating, discovering, and configuring iBeacons
MIT License
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Scanning and broadcasting simultaneously? #10

Closed pcl closed 10 years ago

pcl commented 10 years ago

Hi,

(This is more of a question than an issue... if you've got a preferred means for addressing questions, let me know.)

Does Bleacon / iBeacon / BLE support simultaneously scanning for iBeacons and also broadcasting an iBeacon? My experience seems to indicate that after I call Bleacon.startScanning(), any in-process broadcasts are terminated.

If this is a limitation, I'd be interested in knowing where in the stack it comes from. Can I get around it by running multiple processes on the same machine to address the same BLE chip, for example?

Thanks,

-Patrick

pcl commented 10 years ago

Also: I know the proximityUUIDs that I want to scan for, but my script is currently simply calling Bleacon.startScanning(). If it helps, I can make a different call to just scan for the particular proximityUUIDs that I'm interested in.

sandeepmistry commented 10 years ago

Are you running bleacon on Linux or OS X?

pcl commented 10 years ago

OSX now, but I am targeting Linux on a raspberry pi.

On Sunday, May 25, 2014, Sandeep Mistry notifications@github.com wrote:

Are you running bleacon on Linux or OS X?

— Reply to this email directly or view it on GitHubhttps://github.com/sandeepmistry/node-bleacon/issues/10#issuecomment-44129447 .

Patrick Linskey 202 669 5907

pcl commented 10 years ago

FYI, some experimentation indicates that the behavior on my Mac is a bit unpredictable, at least when running separate processes for transmit and receive. In some attempts, I am able to perform both operations, but the system commonly stops broadcasting at some point. Once this happens, it seems to persist across process boundaries, to the extent that I have to shut down BT and restart it to broadcast again.

On Sunday, May 25, 2014, Patrick Linskey plinskey@gmail.com wrote:

OSX now, but I am targeting Linux on a raspberry pi.

On Sunday, May 25, 2014, Sandeep Mistry notifications@github.com<javascript:_e(%7B%7D,'cvml','notifications@github.com');> wrote:

Are you running bleacon on Linux or OS X?

— Reply to this email directly or view it on GitHubhttps://github.com/sandeepmistry/node-bleacon/issues/10#issuecomment-44129447 .

Patrick Linskey 202 669 5907

Patrick Linskey 202 669 5907

sandeepmistry commented 10 years ago

I'm seeing similar behaviour on my MacBook Air (OS X 10.9.2) as well - using test.js sometimes both scanning and advertising run fine, other times I have to restart bluetooth. The XPC messages are acknowledged by blued.

Linux doesn't seem to have this issue.

pcl commented 10 years ago

So far, I don't have any luck with scanning or broadcasting on my Raspberry Pi. When I run with DEBUG=bleacon,bleno,bindings I get this in the logs:

bleacon startScanning: uuid = undefined, major = undefined, minor = undefined +0ms bleno stateChange poweredOff +0ms

The same code on my Mac gives me this:

bindings sendCBMsg: 1, { "kCBMsgArgName": "node-1401039990287", "kCBMsgArgOptions": { "kCBInitOptionShowPowerAlert": 1 }, "kCBMsgArgType": 1 } +0ms bleacon startScanning: uuid = undefined, major = undefined, minor = undefined +0ms bindings xpcEvent: { "kCBMsgArgs": { "kCBMsgArgState": 5 }, "kCBMsgId": 6 } +346ms bindings state change poweredOn +0ms bleno stateChange poweredOn +0ms

Are there any known reports of Raspberry Pi + Bleacon success?

Thanks,

-Patrick

On Sun, May 25, 2014 at 8:53 AM, Sandeep Mistry notifications@github.comwrote:

I'm seeing similar behaviour on my MacBook Air (OS X 10.9.2) as well - using test.js sometimes both scanning and advertising run fine, other times I have to restart bluetooth. The XPC messages are acknowledged by blued.

Linux doesn't seem to have this issue.

— Reply to this email directly or view it on GitHubhttps://github.com/sandeepmistry/node-bleacon/issues/10#issuecomment-44133698 .

Patrick Linskey 202 669 5907

sandeepmistry commented 10 years ago

It's hard to scan/broadcast when your Bluetooth adapter is powered off :)

Try running, sudo hciconfig hci0 up

pcl commented 10 years ago

Was hoping it'd be something like that... I'm new to bt on Linux. Thanks! I'll try this out once I get home.

On Sunday, May 25, 2014, Sandeep Mistry notifications@github.com wrote:

It's hard to scan/broadcast when your Bluetooth adapter is powered off :)

Try running, sudo hciconfig hci0 up

— Reply to this email directly or view it on GitHubhttps://github.com/sandeepmistry/node-bleacon/issues/10#issuecomment-44141789 .

Patrick Linskey 202 669 5907

sandeepmistry commented 10 years ago

Issue resolved, closing.