CIPAD 48 2e partie Comment créer des menus

Introduction

This tutorial provides step-by-step instructions on creating menus in Arduino programming, based on the second part of lesson 48 from Daniel Talbot's course. This guide is especially useful for beginners looking to enhance their Arduino projects with user-friendly menu systems.

Step 1: Set Up Your Arduino Environment

• Ensure you have the Arduino IDE installed on your computer.
• Connect your Arduino board to the computer via USB.
• Open the Arduino IDE and select the correct board type and port.
• Verify that your libraries are up to date; you may need the LiquidCrystal library for LCD displays.

Step 2: Define Your Menu Structure

• Decide on the menu options you want to offer. For example:
  • Option 1: Start
  • Option 2: Settings
  • Option 3: Exit
• Create an array to hold these options in your code:

const char* menuOptions[] = {"Start", "Settings", "Exit"};

Step 3: Initialize Display and Input

• Set up your display (e.g., LCD or OLED) in the setup() function. For an LCD, your code might look like this:

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 2); // Set up the LCD's number of columns and rows
}

• Implement input handling. If using buttons, define the button pins and set them as input:

const int buttonPin = 7; // Example pin for a button
pinMode(buttonPin, INPUT);

Step 4: Display Menu Options

• Create a function to display the menu options on the screen. Use a loop to iterate through the menu options:

void displayMenu(int selectedOption) {
  lcd.clear();
  for (int i = 0; i < 3; i++) {
    if (i == selectedOption) {
      lcd.print("> "); // Highlight selected option
    }
    lcd.print(menuOptions[i]);
    lcd.setCursor(0, i + 1);
  }
}

Step 5: Handle User Input

• In the loop() function, read the button state to navigate through the menu options:

void loop() {
  static int selectedOption = 0;
  displayMenu(selectedOption);

  if (digitalRead(buttonPin) == HIGH) {
    selectedOption = (selectedOption + 1) % 3; // Cycle through options
    delay(200); // Debounce delay
  }
}

Step 6: Implement Menu Actions

• Define actions for each menu option when selected. This can be done using a switch statement:

void executeOption(int option) {
  switch(option) {
    case 0:
      // Code for Start
      break;
    case 1:
      // Code for Settings
      break;
    case 2:
      // Code for Exit
      break;
  }
}

Conclusion

In this tutorial, you learned how to create a simple menu system for your Arduino projects. You set up the environment, defined menu options, and implemented user input handling. As a next step, consider expanding your menu with more options or integrating additional features like settings adjustments. Happy coding!