---
title: "Ragul D (@ragul-d) | Hashnode"
description: "sharing thoughts on embedded systems and firmware engineering. Read the latest articles by Ragul D on Hashnode."
url: "https://hashnode.com/@ragul-d"
---

@ragul-d

# Ragul D

@ragul-d · Chennai, India · Joined May 2026

sharing thoughts on embedded systems and firmware engineering

### [Understanding Memory-Mapped IO in ARM Cortex-M](https://firmware-engineering.hashnode.dev/understanding-memory-mapped-io-in-arm-cortex-m?utm_source=hashnode&utm_medium=feed)

Learn how Memory-Mapped IO works in ARM Cortex-M microcontrollers. Understand peripheral registers, volatileand hardware interaction

5 min read · [firmware-engineering.hashnode.dev](https://firmware-engineering.hashnode.dev/understanding-memory-mapped-io-in-arm-cortex-m?utm_source=hashnode&utm_medium=feed)

[May 12](https://hashnode.com/posts/understanding-memory-mapped-io-in-arm-cortex-m/6a0333df937b84f7798ae0c0)