Where I describe the impact of data types on math on an AVR microcontroller (ATmega328P) and pitfalls to avoid.

Introduction#

While working on the mapping entry I ran into a problem with the mapping function. The function wasn’t returning correct …

Where I describe how to map values in one domain to another domain.

Introduction#

Mapping is the concept of translating a range of numbers to a second range of numbers, where the second range might be smaller (typically) or larger than the first range. …

Where I comment on the differences between developing code using Standard C vs using the Arduino Framework.

Introduction#

The goal of the AVR C content is to demonstrate how you are able to develop code in C without the Arduino Software Framework. This …

This page provides a broad level of short hints and comments as to C programming and AVR programming.

C Best Practices#

From Embedded C Coding Standard Barr Group

While the entire book is outstanding, I want to call out some specific practices which I …

Where I describe the function - analogRead().

Introduction#

The function analogRead() is similar to digitalRead(), in the sense, it takes a pin number as a parameter and returns the pin’s value. In the case of analogRead, the value will be a number …

Where I describe the struct, buttons[] and how to use it to debounce and check for button presses.

Introduction#

Describing buttons[] is slightly different than describing a function such as analogWrite() and digitalRead() as buttons[] is a struct. The …

Where I describe the function - digitalRead().

Introduction#

The function digitalRead() is analogous to digitalWrite(), in the sense, it takes a pin number as a parameter and as compared to setting its value, it returns the pin’s value. The value …

Where I describe the function - pinMode().

Introduction#

The function, pinMode() is one of the most important and one of the most forgotten of all of the Arduino framework. It is important, as it sets the function of the pin in question. And when its …

Where I describe the function - digitalWrite().

Introduction#

The digitalWrite() function is a basic building block of using a microcontroller. The function will either raise the value of an output pin to 5V or it will lower it to GND (0V), and in doing so …

Where I attempt to gather in one place, all of the errors found while building (compile/link/locate) and uploading code to the Uno.

1. Everytime, I run make, I get an error from Makefile like “Makefile:65: *** missing separator. Stop.” or …