[Bluez-users] RE[2]: inquiry scan problems

 > > [my description of the inquiry problems with java (jsr82)]
 > can your reproduce it without using any JSR-82 stuff?

yes. i tried the inquiries with "hcitool scan".
again, i do 5 and more inquiries in a row with one second sleep between 
inquiries single "hcitool scan"'s...

here what i noted:
- it needs in average 4 inquiries to get a new device after it's in 
rainge (4 single "hcitool scan" until it's visible).
- it needs in average 2 inquiries to see that a device is no longer in 
rainge (or has bluetooth disabled). the first new inquiry usually gives 
"n/a" as the friendlyName, the second one doesn't list it again.
does maybe bluez or my bluetooth dongle cache old inquiries or is there 
still radiation in the air :-) ?

- during scans, if nothin changes (no new/disappeared devices), the 
friendlyName changes to n/a for a single inquiry (very rare, but it happens)

- if multiple new devices come in rainge, old devices migt have a n/a 
friendlyName (the right one comes back in the next scan)


thanks for your time...

kind regards
Marco


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Hi Marco,

yes. i tried the inquiries with "hcitool scan".
again, i do 5 and more inquiries in a row with one second sleep between 
inquiries single "hcitool scan"'s...

here what i noted:
- it needs in average 4 inquiries to get a new device after it's in 
rainge (4 single "hcitool scan" until it's visible).
- it needs in average 2 inquiries to see that a device is no longer in 
rainge (or has bluetooth disabled). the first new inquiry usually gives 
"n/a" as the friendlyName, the second one doesn't list it again.
does maybe bluez or my bluetooth dongle cache old inquiries or is there 
still radiation in the air :-) ?

for me this sounds more like a job periodic inquiry.

Regards

Marcel




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Hello Marcel

what do you mean by "job periodic inquiry"?
what is this? i don't know what this means...

kind regards
Marco Trudel


Marcel Holtmann wrote:

Hi Marco,

quoted

yes. i tried the inquiries with "hcitool scan".
again, i do 5 and more inquiries in a row with one second sleep between 
inquiries single "hcitool scan"'s...

here what i noted:
- it needs in average 4 inquiries to get a new device after it's in 
rainge (4 single "hcitool scan" until it's visible).
- it needs in average 2 inquiries to see that a device is no longer in 
rainge (or has bluetooth disabled). the first new inquiry usually gives 
"n/a" as the friendlyName, the second one doesn't list it again.
does maybe bluez or my bluetooth dongle cache old inquiries or is there 
still radiation in the air :-) ?

for me this sounds more like a job periodic inquiry.

Regards

Marcel




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Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. 
http://productguide.itmanagersjournal.com/
_______________________________________________
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Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

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Hi Marco,

what do you mean by "job periodic inquiry"?
what is this? i don't know what this means...

look at the HCI part of the Bluetooth specification for the commands and
events for periodic inquiry.

Regards

Marcel




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Read honest & candid reviews on hundreds of IT Products from real users.
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