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Choosing a development environment for an embedded system is one of the more consequential parts of the project.

Most Arm Cortex-M projects today employ an Integrated Development Environment (IDE) which supplies an editor, compiler, project manager, build tool, terminal, debugger GUI, debugger, and debugging probe or interface.

The IDE's like Eclipse, IAR, Greenhills, Keil, and Code Composer Studio have become so complex that simply learning to use them may take a big chunk of time for each team member at the beginning of the project.

The dollar cost of an IDE seat can be as high as several thousand dollars.

For small development projects, involving one or two people and a few man months worth of work, a full blown IDE can occupy a big chunk of the budget, especially when it's learning curve is considered.

Luckily, help is on the way, and from the most unlikely source.

Microsoft has funded an IDE for use in web-development. It supports a wide variety of computing languages, including scripting languages such as JavaScript and TypeScript. It also allows simple configuration with a few JSON schemes. The name of this environment is Visual Studio Code, or VSCode for short.

This book shows how to use VSCode, Arm Embedded Compiler Tools, a make file, and OpenOCD debug server, to build a simple, cross-platform IDE for developing Cortex-M projects.

The book comes with three compressed files containing build directories for macOS, Linux, and Windows platforms. Each directory is a VSCode project, with complete MIT licensed source code, and a make file, for building the example project for the STM32F7 Discovery Board

The project is a digital theremin, with ADSR note envelopes, multiple waveforms, a filter, and a cross-channel beat frequency control.

The eBook gives detailed instructions for obtaining VSCode, the Arm Compiler Tools, a Cortex-Debug extension for VSCode, and the OpenOCD debug server. It describes how to setup the three simple scripts necessary to integrate these tools into a fully functional IDE for Cortex-M development for macOS, Linux, and Windows..

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