BLE GAP

###GAP Generic Access Profile controls connections and advertising in Bluetooth. GAP is what makes your device visible to the outside world, and determines how two devices can (or can't) interact with each other.

###Device Roles The key concepts to keep in mind are Central devices and Peripheral devices.

• Peripheral devices are small, low power, resource constrained devices that can connect to a much more powerful central device. Peripheral devices are things like a heart rate monitor, a BLE enabled proximity tag, etc.
• Central devices are usually the mobile phone, tablet or computer that you connect to with far more processing power and memory. The Central device will on most cases have network access and provide the possibility pass the BLE data anywhere you would like to.

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