alan smith wrote:
> NXP now has a bt1.2 module, BGB203 and BGB204.  Not sure on pricing tho
About $5-$6 dollars in 10K quantities.

BGB203 is flash based with ARM7TDMI core with built-in bluetooth radio 
in a module.  While BGB204 is ROM based.

I am using BGB203 in some of the products I developed.  The problem with 
this chip is that you will need a Bluetooth stack (HCI level) which is 
very complex to make from scratch.  You either license one from Ericsson 
or from Philips/NXP.  My client negotiated Philips to release to them 
the HCI object file for the projects.  I only make the upper HCI 
software and the user interfacing.

CSR bluecore chips are better.  HCI and even up to RFCOMM stack are 
already included in the chip/module.  User programs/profiles are loaded 
in flash and run in VM (virtual machine).

SPP (serial port profile) is the profile needed for RS232 converter 
application.  For the hardware only a 3.3V regulator, MAX3232, a CSR 
bluecore module and few passives are needed.  Even MAX3232 is not need 
if you don't need RS232 voltage levels and want to connect directly to 
your processor.

regards,

Reggie
http://www.microelektronics.com
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