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MAX5144-SPI-C-Driver

This repository contains a robust and reusable C++ driver for the MAX5144 DAC IC, designed to interface with SPI-enabled TEC controllers such as the MAX1978 on Raspberry Pi. The driver ensures precise control over the DAC's 14-bit resolution, enabling accurate temperature regulation.

Features

  • Full SPI Implementation: Supports SPI Mode 0 with configurable bus, channel, and clock speed.
  • Error Handling: Ensures valid DAC output range and robust exception handling.
  • GPIO Control: Manages the chip-select (CS) line via WiringPi.
  • Clean Architecture: C++ object-oriented design for maintainability and extensibility.
  • Integration Ready: Compatible with Raspberry Pi setups and WiringPi library.

Getting Started

Clone the Repository

git clone https://github.com/dcl920108/MAX5144-SPI-C-Driver.git
cd MAX5144-SPI-C-Driver

File Structure

MAX5144-SPI-C-Driver/
├── include/
│   └── MAX5144.h     # Header file for MAX5144 class
├── src/
│   ├── MAX5144.cpp   # Implementation of MAX5144 class
│   └── main.cpp      # Example usage of MAX5144 driver
├── CMakeLists.txt    # CMake configuration file
└── README.md         # Project documentation

Build and Run

  1. Install Dependencies Ensure WiringPi is installed on your Raspberry Pi:

    sudo apt-get install wiringpi

  2. Configure CMake Navigate to the project directory and create a build directory:

    mkdir build
cd build
cmake ..

  3. Compile Compile the project using make:

    make

  4. Run the Example Execute the generated binary:

    ./TemperatureControlProject

Code Example

MAX5144 Class

Here’s an example of how to initialize and use the driver:

#include "MAX5144.h"
#include <iostream>

int main() {
    try {
        // Initialize MAX5144 with SPI bus 1, channel 1, and GPIO 17 for CS
        MAX5144 dac(1, 1, 17);

        // Set DAC output to 4854
        dac.setDacOutput(4854);

        std::cout << "DAC output successfully set!" << std::endl;
    } catch (const std::exception &e) {
        std::cerr << "Error: " << e.what() << std::endl;
        return 1;
    }

    return 0;
}

CMake Configuration

The CMakeLists.txt ensures proper setup for the project:

cmake_minimum_required(VERSION 3.10)
project(MAX5144-SPI-C-Driver)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_FLAGS "-g")

# Include directories
include_directories(include)

# Main executable
add_executable(TemperatureControlProject src/main.cpp src/MAX5144.cpp)
target_link_libraries(TemperatureControlProject wiringPi)

Tips for Beginners

CMake

CMake can be intimidating for beginners due to its verbose error messages. Follow these tips:

  1. Ensure all paths (e.g., include_directories) are correct.
  2. Pay attention to target_link_libraries to link WiringPi properly.
  3. If errors arise, try running: 
    cmake --debug-output ..

Contributing

We welcome contributions! Please fork this repository, create a feature branch, and submit a pull request.

License

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

Let me know if you need further refinements!