From: Marcel Holtmann <marcel@holtmann.org>
To: Albert Huang <ashuang@gmail.com>
Cc: BlueZ Mailing List <bluez-devel@lists.sourceforge.net>
Subject: Re: [Bluez-devel] how well supported is hci_read_rssi and hci_read_link_quality?
Date: Wed, 23 Jun 2004 09:31:51 +0200 [thread overview]
Message-ID: <1087975911.4209.58.camel@pegasus> (raw)
In-Reply-To: <ef9938ec0406222219c5d442b@mail.gmail.com>
Hi Albert,
> Does anyone have a rough estimate, or even a list, of the devices that
> support hci_read_rssi and hci_read_link_quality? Am I correct in
> assuming that some devices supoprt it and some don't? For example, a
> program that reads rssi and link quality that works beautifully on an
> x86 with a d-link usb bluetooth dongle doesn't seem to work at all on
> an HP ipaq h5550. On the ipaq, the link quality is always 0 and rssi
> is always 255.
the link quality command is vendor specific, so you can't rely on it. We
only know how CSR uses it. The RSSI must be announced in the features
bits.
> The attached patch changes cmd_lq in hcitool.c to print out an
> unsigned integer instead of a signed integer.
Does this make any difference? The link quality is only uint8.
Regards
Marcel
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next prev parent reply other threads:[~2004-06-23 7:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-23 5:19 [Bluez-devel] how well supported is hci_read_rssi and hci_read_link_quality? Albert Huang
2004-06-23 7:31 ` Marcel Holtmann [this message]
2004-06-23 15:12 ` Albert Huang
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