Glossary

A language and message format used by an application program to communicate with an operating system, application, or other service.

The attribute protocol allows a device referred to as the server to expose a set of attributes and their associated values to a peer device referred to as the client. Bluetooth Core Specification, Version 5.1, Vol 3, Part F, Section 1.1

A vendor-independent hardware abstraction layer for the Cortex®-M processor series that defines generic tool interfaces.

A mechanism for upgrading the firmware of a device.

A part of a CPU specially designed to perform operations on floating point numbers.

The Bluetooth system defines a base profile which all Bluetooth devices implement. This profile is the Generic Access Profile (GAP), which defines the basic requirements of a Bluetooth device. Bluetooth Core Specification, Version 5.1, Vol 1, Part A, Section 6.2

Generic Attribute Profile (GATT) is built on top of the Attribute Protocol (ATT) and establishes common operations and a framework for the data transported and stored by the Attribute Protocol. Bluetooth Core Specification, Version 5.1, Vol 1, Part A, Section 6.4

Type of a computer device that interacts directly with, and most often takes input from, humans and may deliver output to humans. The term "HID" most commonly refers to the USB-HID specification.

A semiconductor chip consisting of fabricated transistors, resistors, and capacitors.

A control protocol for the link and physical layers that is carried over logical links in addition to user data. Bluetooth Core Specification, Version 5.1, Vol 1, Part A, Section 1.2

In a radio receiving system, an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio.

Provides a channel-based abstraction to applications and services. It carries out segmentation and reassembly of application data and multiplexing and de-multiplexing of multiple channels over a shared logical link. Bluetooth Core Specification, Version 5.1, Vol 1, Part A, Section 1.2

The default stack pointer. By default, the nRF52 has a shared call stack for the application and the SoftDevice, managed by the MSP.

A man-in-the-middle attack is a form of eavesdropping where communication between two devices is monitored and modified by an unauthorized party who relays information between the two devices giving the illusion that they are directly connected.

A peripheral that can be used to generate events when a memory region is accessed by the CPU.

A device used to increase the transmit power level of a radio signal.

Enables peripherals to interact autonomously with each other using tasks and events independent of the CPU.

A separate stack pointer that can be used for application threads. This is an optional configuration, but it may be required if using an RTOS.

A unique identifier assigned to a design that has completed Bluetooth® Qualification.

A module in the SoftDevice that is dedicated to providing various signal quality measurements. The application can use this data to estimate the quality of received signal.

A set of tools used for developing applications for a specific device or operating system.

A SoftDevice component that controls the SoftDevice state and configures the behavior of certain core functionality.

Provides means for bonding devices, encrypting and decrypting data, and enabling device privacy.

A protocol used for pairing and key distribution.

A microchip that integrates all the necessary electronic circuits and components of a computer or other electronic systems on a single integrated circuit.

Generates a software exception in which access to system resources or privileged operations can be provided.