> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of David Duffy (AVD)
> Sent: 10 May 2010 06:38
> To: Microcontroller discussion list - Public.
> Subject: [EE] Bluetooth control via iPhone
> 
> We're designing a PIC based board for a client, and he'd like a remote
> control for it. The remote needs to set and retrieve a few parameters
as
> well as display some statistics.
> 
> The board runs from a (15-20Ah ?) 12V sealed battery, so low standby
> consumption is important.  It currently lasts for 8-12 weeks between
> charges.
> 
> The main current draw is a small motor that runs several (3 - 30)
times
> a day, for about 20 seconds each time. The board will have an RTC, but
I
> don't expect that to draw any significant current.
> 
> He has had something like this designed for him in the past (by
another
> company), but asked of the possibility of controlling the equipment
via
> an iPhone using Bluetooth.
> 
> He'd like (password protected) control from up to 20 metres away, but
I
> think the distance is negotiable. There are no safety hazards involved
> in the equipment being remotely controlled.
> 
> I've not delved into iPhone application development before, but do
have
> over 10 years experience with Delphi (Windows) programming.
> 
> How feasible does this all sound?  Has anyone here gone down that road
> yet?
> 
> The other thing on his "wish list" is SMS reporting of equipment
faults
> and tamper/abuse alarms.  I suspect this will blow the unit price out
> somewhat.  Has anyone in Australia used this type of service?
> David...

The iPhones Bluetooth implementation is extremely limited; the original
version supported only the Hands Free Profile and Headset Profile, i.e.
just enough for hands free audio and nothing else.  The later versions
added a couple of extra profiles including AVRCP which might be of use.

http://support.apple.com/kb/HT3647

If you were hoping for a simple bluetooth/UASRT conversion and roll your
own protocol then I believe the only way to achieve this is using the
third party iBluetooth application.  Obviously the phone will need to be
"jail broken" in order to install third party apps that are not
available from Apples app store.

This is another example of Apples triumph of marketing over function.
The features that Apple includes in the iPhone are slick and work well,
but the omissions are just ridiculous (e.g. no native MMS support in the
original!).

Mike

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