Latest Firmware Technical Articles

File systems can be great for handling data and organizing memory, but most file systems require large amounts of memory.…

File systems can be great for handling data and organizing memory, but most file systems require large amounts of memory. This is where MicroFAT comes in!

Learn how to make flashing your ARM-based MCU easy by using OpenOCD debugger with an FT2232H adapter.

Learn how to make flashing your ARM-based MCU easy by using OpenOCD debugger with an FT2232H adapter.

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of…

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of FIR filters over IIR designs, e.g. stability and linear-phase response. Finally, we'll go over an introduction to designing FIR filters via the window method.

Using Finite State Machines (FSM) is a common industrial practice in coding but their use extends beyond everyday…

Using Finite State Machines (FSM) is a common industrial practice in coding but their use extends beyond everyday software. They can easily be used in projects, help prevent bugs, stop infinite loops hogging the processor, and ease debugging.

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert…

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert this data into an analog signal without overburdening the CPU.

Learn about the NES Controller's data protocol, then use this knowledge to easily integrate into an Arduino Uno.

Learn about the NES Controller's data protocol, then use this knowledge to easily integrate into an Arduino Uno.

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the…

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the DAC’s sampling rate.

Learn how to communicate between your PC and the SAM4S using the Atmel Software Framework’s USB module and simple ASCII…

Learn how to communicate between your PC and the SAM4S using the Atmel Software Framework’s USB module and simple ASCII commands.

Part One in this two-article series focuses on the hardware setup and on using a pulse-width-modulated signal to control a servo.

Part One in this two-article series focuses on the hardware setup and on using a pulse-width-modulated signal to control a servo.

The new development board features a 32 MHz Quark and a host of features at a $14.95 price tag.

The new development board features a 32 MHz Quark and a host of features at a $14.95 price tag.

This article covers everything you need to know to generate pulse-width-modulated signals with Atmel’s SAM4S Xplained…

This article covers everything you need to know to generate pulse-width-modulated signals with Atmel’s SAM4S Xplained Pro development board.

This article provides additional details related to code development, hardware configuration, and the OLED interface.

This article provides additional details related to code development, hardware configuration, and the OLED interface.

Learn about basic procedures and techniques for creating your own projects with Atmel’s SAM4S Xplained Pro development platform.

Learn about basic procedures and techniques for creating your own projects with Atmel’s SAM4S Xplained Pro development platform.

Test-driven development (TDD) is an iterative process for writing software, where the unit tests are developed just…

Test-driven development (TDD) is an iterative process for writing software, where the unit tests are developed just before the implementation. TDD isn't used widely in embedded software, but it's the best way to get started with unit testing.

No I2C interface with that sensor? No problem. Program a PIC chip as an I2C slave device for custom sensor and I/O…

No I2C interface with that sensor? No problem. Program a PIC chip as an I2C slave device for custom sensor and I/O interfacing. Here, we use three DHT22 sensors on a single I2C interface.

We will explore how P, I, and D gain influences system performance, and in the process we will find a gain configuration…

We will explore how P, I, and D gain influences system performance, and in the process we will find a gain configuration that works well for our temperature controller.

SIMCOM's SIM 900A in Europe? Read on to learn how.

SIMCOM's SIM 900A in Europe? Read on to learn how.

With USB communications and a Scilab graphical user interface, we can really see what the PID controller is doing.

With USB communications and a Scilab graphical user interface, we can really see what the PID controller is doing.

We will implement a basic PID (proportional–integral–derivative) controller in firmware and observe the results using…

We will implement a basic PID (proportional–integral–derivative) controller in firmware and observe the results using an oscope and LEDs.