Hi Andrea, The implementation on OS X and iOS are different. iOS devices has smaller battery capacity and put more constraints on the parameters. For more information, please see page 18 in the Apple Bluetooth Guidelines available at: https://developer.apple.com/hardwaredrivers/BluetoothDesignGuidelines.pdf What connection parameters are you requesting? Thanks, Joakim On May 21, 2012, at 9:14 AM, Andrea Tiso wrote:

Hi everybody,

I've been developing an iPad app that should communicate with a device using Bluetooth LE (Bluegiga BLE112). I'm using a "new iPad" with iOS 5.1.1 and xCode 4.3.2. I've noticed something that I cannot explain. I'm not able to update the communication parameters, even if they fall within the limits reported in the Apple Bluetooth Guidelines. When I try so set them through the device I get not error (response = 0x00) but the parameters remain the default ones (interval min 84ms…). What is getting me crazy is that the same code works just fine with a small MacOsX application I developed! It seems that iOS simply ignores the connection parameters update request, while MacOSX does not.

Is there anybody who can explain that?

Thanks for your help

Best regards

Andrea

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