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How GAP and GATT Work — Bluetooth Low Energy Basics

Originally Published in 2013 and Updated April 1, 2024: Bluetooth Low Energy (BLE) continues to evolve, and understanding the roles of the Generic Access Profile (GAP) and the Generic Attribute Profile (GATT) is crucial in leveraging this technology effectively. This updated article provides expanded information on GAP vs GATT and additional resources to support you on your BLE development journey. Introduction Bluetooth Low Energy…

BLE

BLE Connectivity Architecture: The Ultimate Guide

By: Alec Letourneau

Introduction Building your first connected product is no easy task. There are many wireless networking protocols, each with its benefits and tradeoffs. However, if you're interested in widespread support, including iOS or Android devices…

BLE

The Ultimate Guide to Managing Your BLE Connection

By: Bret Hassler

Introduction One of the core aspects of designing a BLE application is determining how connections will be managed. There’s more to it than simply starting a connection whenever the devices should communicate. You must consider the…

BLE

Architecting iOS and Android Apps for IoT BLE Systems

By: Gretchen Walker

When you buy a Fitbit, you’re not just paying for the wearable hardware. You’re buying a key that unlocks access to a greater integrated system. Before you can even start using the device, you must first download the app, pair it with your…

BLE

Maximizing BLE Throughput Part 4: Everything You Need to Know

By: Ashish Derhgawen

Welcome to part 4 of the “Maximizing BLE Throughput” blog post series! This blog post will provide the key takeaways from our previous 3 posts and also bring us up-to-date with the latest BLE spec (such as 2M PHY). Update: Please check out…

BLE

Maximizing BLE Throughput Part 3: Data Length Extension (DLE)

By: Zach Michel

Welcome back BLE enthusiasts, to the 3rd installment in Punch Through’s ‘Maximizing BLE Throughput’ blog post series. BLE 5's Data Length Extensions are one of the largest performance improvements ever made to the BLE specification. Here's…

BLE

Maximizing BLE Throughput Part 2: Use Larger ATT MTU

By: Punch Through

It's commonly accepted with BLE that as throughput goes up, so does power consumption. However, by intelligently choosing your MTU size, you can actually increase throughput while also decreasing power consumption. Update: Please check out…

BLE

Maximizing BLE Throughput on iOS and Android

By: Punch Through

Still confused about how fast you can really send data over Bluetooth Low Energy? It's not just you. A google search will turn up many incomplete answers. Each OS and device has it’s own restrictions, such as connection interval and number of…