![]() ![]() ![]() adafruit-nrfutil - a modified version of Nordic's nrfutil is used to upload via DFU bootloader. Nordic's nRF5x Command Line Tools include nrfjprog, which can be used to upload via the SWD debug interface. In addition to the compiler, you'll need software that can take that compiled code and upload it to a Nordic nRF5 chip via either the bootloader or the SWD interface. There are a handful of ARM C compilers out there, but we'll be focusing on the open-source ARM GCC toolchain in this tutorial. To compile those source files you'll need a C compiler for the ARM architecture. Installing the ARM Toolchain & Nordic ToolsĪll of the nRF5 SDK's examples, components, and libraries are written in C. This tutorial is primarily designed to support the SparkFun Pro nRF52840 Mini Breakout - especially the section covering SDK modifications to enable programming-via-bootloader. For most examples, you'll need to make some Makefile (and potentially linker-script) modifications to load it onto your nRF52840 using the pre-programmed bootloader. The SDK isn't tailor-made for the SparkFun nRF52840 Mini Breakout.Whether you want to blink an LED or set up your nRF52 board as a BLE central device, there are a lot of new functions, macros, and programming paradigms to familiarize yourself with. Developing with the nRF5 SDK is hard if you've never done it before. We're not in Arduino- or Python-land anymore.If you're stuck, feel free to reach out in this tutorial's comments section. You'll encounter errors that may seem to be impossibly isolated to your setup and your computer. Setting up a from-scratch toolchain and IDE can be a daunting task. Whether you'd prefer to use Eclipse, Sublime, Notepad++, or, as we'll demonstrate in this tutorial Visual Studio Code, your options are nearly endless! Flexibility to use your favorite IDE/editor.Access to more advanced features that may not have Arduino or CircuitPython support built out: NFC, ANT, capacitive-touch sensing, FreeRTOS just to name a few.Just take a peek at the nRF5 SDK Documentation. Nordic's documentation is equally-comprehensive and well-organized.Everything from blinky to BLE heart-rate monitors are are included in the SDK. Lots of example applications! The list of examples in Nordic's nRF5 SDK is exhaustive.Pros and ConsĪs with any development approach, there are benefits and disadvantages to building a homebrew programming environment. So this tutorial will put extra focus on modifying the SDK to seamlessly bootload code via USB. SparkFun's nRF52840 ships with a USB-Serial DFU bootloader. It focuses on developing for the SparkFun Pro nRF52840 Mini Breakout. This tutorial will cover download and setup of every software tool - armgcc, nrfutil, and the nRF5 SDK - you need for nRF52 development. ![]()
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