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Raspberry_Pi_Temperature_Monitor

The Temperature Monitor is a C program for Raspberry Pi 5 and 4B that monitors and logs system temperature in real-time. It features threshold-based logging, automatic log rotation, and daemon mode for background processing. The program provides visual feedback with color-coded terminal output and is easy to configure and use.

Features

  • Real-time temperature monitoring with visual feedback.
  • Temperature logging with threshold-based activation.
  • Automatic log rotation to manage disk space.
  • Option to run as a daemon for background processing.
  • Color-coded temperature display in the terminal for easy monitoring.

Installation

Prerequisites

  • A Unix-like operating system (Linux preferred).
  • GCC compiler.
  • Access to temperature sensors (e.g., via vcgencmd on Raspberry Pi).

Compiling the Program

Clone the repository and compile the source code:

git clone https://github.com/Xza85hrf/Raspberry_Pi_Temperature_Monitor.git
cd Raspberry_Pi_Temperature_Monitor
gcc -o enhanced_temperature_monitor enhanced_temperature_monitor.c
And run it with:
./enhanced_temperature_monitor

Configuration

Modify the following parameters according to your needs within the program:

  • threshold: The temperature threshold above which alerts will be logged.
  • log_file: Path to the log file.
  • poll_interval: Time interval in seconds between each temperature read.

Usage

Run the program from the command line:

./enhanced_temperature_monitor [-t threshold] [-l log_file] [-i poll_interval] [-d]

Options

  • -t threshold: Set the temperature threshold (default is 80.0°C).
  • -l log_file: Specify a custom log file path.
  • -i poll_interval: Set the polling interval in seconds.
  • -d: Run as a daemon.

Code Overview

The main functionalities are divided among several functions:

  • log_temperature(): Logs temperatures that exceed the configured threshold.
  • check_temperature(): Checks if the current temperature exceeds the threshold and logs it if so.
  • read_temperature(): Reads the current temperature using system-specific commands.
  • daemonize(): Converts the process to a daemon.
  • rotate_log(): Rotates the log file when it reaches a specified size limit.
  • moving_average(): Calculates a moving average of the temperature to smooth out rapid changes.

Main Functions

log_temperature()

Logs the temperature to the specified log file. Uses color coding for different temperature ranges.

check_temperature()

Checks if the temperature exceeds the threshold and logs a warning if it does.

read_temperature()

Reads the current temperature using the vcgencmd command on Raspberry Pi.

daemonize()

Converts the program into a daemon for background processing.

rotate_log()

Rotates the log file when it exceeds 1 MB to manage disk space.

moving_average()

Calculates a moving average of the temperature to smooth out rapid changes.

Contributing

Contributions to the Temperature Monitor project are welcome. Here’s how you can contribute:

  1. Fork the repository.
  2. Create a new branch for your feature (git checkout -b feature/my-new-feature).
  3. Commit your changes (git commit -am 'Add some feature').
  4. Push to the branch (git push origin feature/my-new-feature).
  5. Create a new Pull Request.

License

This project is licensed under the MIT License - see the LICENSE file for details.