https://github.com/amid68/led-blinking-with-serial-communication
A basic "Hello, World!" project in Arduino
https://github.com/amid68/led-blinking-with-serial-communication
arduino hello-world
Last synced: 7 months ago
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A basic "Hello, World!" project in Arduino
- Host: GitHub
- URL: https://github.com/amid68/led-blinking-with-serial-communication
- Owner: Amid68
- License: mit
- Created: 2024-09-03T12:04:48.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2024-09-09T12:07:30.000Z (almost 2 years ago)
- Last Synced: 2024-11-21T23:59:27.289Z (over 1 year ago)
- Topics: arduino, hello-world
- Language: C
- Homepage:
- Size: 1.03 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# LED Blinking with Serial Communication
## Description
This repository contains two versions of a basic project that blinks an LED connected to pin 8 and sends "Hello, World!" over the serial port every second:
- **Arduino IDE version**: Uses the Arduino framework and libraries for easy development.
- **Embedded C version**: Written in pure C, using AVR registers and timers directly for accurate timing and serial communication.
## Project Setup
## Hardware Requirements
- Arduino board
- LED and 220Ω resistor
- 2 Jumper wires
- Breadboard
## Files in the Repository
### Arduino Version
- **Path**: `arduino/hello_world/hello_world.ino`
- **Description**: This is the original Arduino IDE project. It blinks an LED connected to pin 8 and sends "Hello, World!" over the serial port every second using Arduino libraries.
### Embedded C Version
- **Path**: `src/`
- **Description**: This version uses AVR libraries and timers in pure C for the same functionality. No Arduino-specific libraries are used.
- `src/main.c`: Main logic file.
- `src/usart/usart.c` and `usart.h`: Handles serial communication using USART.
- `src/timer/timer.c` and `timer.h`: Handles Timer1 for LED blinking.
- `src/delay/delay.c` and `delay.h`: Provides accurate delay using Timer0.
## How to Use
### Arduino IDE Version
1. Connect the LED and resistor in series between pin 8 and ground.
2. Open the `arduino/sketch/hello_world.ino` file in the Arduino IDE.
3. Select the correct board and port from the **Tools** menu.
4. Upload the code to your Arduino board.
5. Open the Serial Monitor at 9600 baud to see the "Hello, World!" message.
### Embedded C Version (Pure C)
#### Prerequisites
- **GNU AVR Toolchain**: Make sure `avr-gcc`, `avr-libc`, and `avrdude` are installed.
- **Make**: For building the project using a `Makefile`.
#### Compilation and Upload Steps
1. Connect the LED and resistor in series between pin 8 and ground.
2. Clone or download the repository and navigate to the root directory.
3. **Modify the Makefile**: Open the `Makefile` and update the `AVRDUDE_PORT` line to use the correct port for your system.
- For **macOS**, the port may look like `/dev/cu.usbserial-xxxx`.
- For **Linux**, it could be `/dev/ttyUSB0` or `/dev/ttyACM0`.
- For **Windows**, it might be `COMx` (where `x` is the COM port number).
Example:
```makefile
AVRDUDE_PORT = /dev/ttyUSB0 # Update this to match your system
```
4. Run the following commands to compile and upload the program:
```bash
make clean # Clean any previous build files
make # Compile the project and generate the .hex file
make upload # Upload the compiled .hex file to your Arduino board
```
5. Open your serial terminal or the Arduino IDE Serial Monitor at 9600 baud to see the "Hello, World!" message being printed every second.