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-Jeff
On Jul 28, 2009, at 13:50 PM, Matthias Ringwald wrote:
On Jul 25, 2009, at 2:45 AM, Jeff Johnson wrote:
Hi Jeff,
Cheers
Matthias Ringwald
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Fantastic information! Thanks. I wanted to try making an iPhone app
that would emulate a bluetooth number pad I could use with a laptop or
in conjunction with one of the compact iMac keyboards. I know there's
an app that lets you use the iPhone as a number pad, but it's WiFi and
requires the installation of software... I thought it would be neat if
you didn't have to do that.
I've been looking around trying to see whether it's possible to use
a iPhone to emulate a bluetooth keyboard (no real reason, just
think it would be a fun exercise). I can't find any information
either way; could someone point me in the right direction?
whether this is possible depends on your "setup". Using Apple's
iPhone SDK and any OS up till 3.0, it is impossible - mainly
because Apple only provides an API for "Made for iPhone" BT
accessories and for Bluetooth Gaming between multiple iPhones.
However, the iPhone does contains a popular Cambridge Silicon Radio
(CSR) chipset with a standard Bluetooth HCI interface. So in theory,
you could run any standard user-space Bluetooth stack you can find
and do whatever you want, including sending key events as standard
HID events over an L2CAP channel.
So far, people successfully used at least the following 3 open-
source Bluetooth stacks on the iPhone to get some Bluetooth
functionality:
* the lwBT stack: http://www.sm.luth.se/~conny/lwbt/
* the stack that comes as part of the BTnode research platform: http://www.btnode.ethz.ch
* the new BTstack project: http://code.google.com/p/btstack
None of these will allow you to sent your key events right away, but
it might be interesting to have a look. To summaries the answer to
your question: yes, it is possible, but sadly only on a jailbroken
iPhone.
What use case did you have in mind, when asking for BT keyboard
support (even though for a fun excercise) ?
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On Jul 25, 2009, at 2:45 AM, Jeff Johnson wrote:
Hi Jeff,
Cheers
Matthias Ringwald
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I've been looking around trying to see whether it's possible to use
a iPhone to emulate a bluetooth keyboard (no real reason, just think
it would be a fun exercise). I can't find any information either
way; could someone point me in the right direction?
whether this is possible depends on your "setup". Using Apple's iPhone
SDK and any OS up till 3.0, it is impossible - mainly because Apple
only provides an API for "Made for iPhone" BT accessories and for
Bluetooth Gaming between multiple iPhones.
However, the iPhone does contains a popular Cambridge Silicon Radio
(CSR) chipset with a standard Bluetooth HCI interface. So in theory,
you could run any standard user-space Bluetooth stack you can find and
do whatever you want, including sending key events as standard HID
events over an L2CAP channel.
So far, people successfully used at least the following 3 open-source
Bluetooth stacks on the iPhone to get some Bluetooth functionality:
* the lwBT stack: http://www.sm.luth.se/~conny/lwbt/
* the stack that comes as part of the BTnode research platform: http://www.btnode.ethz.ch
* the new BTstack project: http://code.google.com/p/btstack
None of these will allow you to sent your key events right away, but
it might be interesting to have a look. To summaries the answer to
your question: yes, it is possible, but sadly only on a jailbroken
iPhone.
What use case did you have in mind, when asking for BT keyboard
support (even though for a fun excercise) ?
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"Error - failed to open the RFCOMM channel with error 00000004"
Any idea what error "4" might mean?
Thanks for any insight.
- Peter Sichel
Sustainable Softworks
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I'm using Apple's RFComm sample code and sometimes see an unexpected
error
The typical sequence is the device fails to open because it is
configured for exclusive access and another connection is already
open. I sometimes see error 4 as my program tries to close out the
previous connection and establish a new one.
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-Jeff
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I've been looking around trying to see whether it's possible to use a
iPhone to emulate a bluetooth keyboard (no real reason, just think it
would be a fun exercise). I can't find any information either way;
could someone point me in the right direction?
This email sent to site_archiver(a)lists.apple.com