arduino-cpp-projects

A collection of Arduino Uno projects written in C and C++ for learning embedded systems development.

Overview

This repository contains various Arduino projects implemented in C and C++ to explore embedded programming concepts. The goal is to understand low-level hardware interaction, memory management, and efficient code practices for embedded development.

Since the goal is to learn C & C++ for embedded systems, some of the projects also contain a version of the code written in the Arduino language (.ino) as aprototype for ease of rewrites.

Compiling and uploading

Each of the c/c++ projects contains a makefile that can be used to compile, upload and clean the projects.

make
make upload
make clean

But you can also upload the arduino sketches located in the projects with the arduino-cli:

# 1. Install the core for your board (example for Arduino Uno)
arduino-cli core install arduino:avr
# 2. Create a new sketch (optional)
arduino-cli sketch new MySketch
# 3. Compile the sketch
arduino-cli compile --fqbn arduino:avr:uno /path/to/your/sketch
# 4. Upload to board (Linux / Unix)
arduino-cli upload -p /dev/ttyACM0 --fqbn arduino:avr:uno /path/to/your/sketch
# Windows
arduino-cli upload -p COM7 --fqbn arduino:avr:uno /path/to/your/sketch

Projects

• blink - Classic LED blink, exploring GPIO control and timing
  • .ino version:
    • 340 bytes (1%) of program storage space
    • 9 bytes (0%) of dynamic memory
  • .c version:
    • Program: 176 bytes (0.5% Full)
    • Data: 0 bytes (0.0% Full)
• tmp36 - Temperature sensor reading with ADC operations
  • .ino version:
    • 5108 bytes (15%) of program storage space
    • 232 bytes (11%) of dynamic memory
  • .c version:
    • Program: 4256 bytes (13.0% Full)
    • Data: 48 bytes (2.3% Full)
• ssd1306_tmp36 - Temperature sensor reading and displaying result on ssd1306
  • .ino version:
    • 20026 bytes (62%) of program storage space
    • 631 bytes (30%) of dynamic memory, leaving 1417 bytes for local variables

Next up: i2c ssd1306+tmp36 More projects coming...

Resources

Datasheets

• ATmega328P Datasheet - Microchip ATmega328P
• TMP36 Datasheet - Analog Devices TMP36

Docs

• AVR Libc Documentation - nongnu.org/avr-libc
• Arduino to AVR Guide - Arduino to bare AVR transition guide
• AVRDUDE Documentation - AVRDUDE manual
• AVR Fuse Calculator - engbedded.com/fusecalc

Books

• "Make: AVR Programming" by Elliot Williams
• "Programming Arduino" by Simon Monk
• "AVR Microcontroller and Embedded Systems" by Mazidi

Vidoes

• **Fundamentals of Microcontrollers - Arduino bare-metal breakdown" by Mitch Davis