arduino nano 与oled 0.96寸滚动显示菜单的代码

admin 2023-5-12 354

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Initialize the OLED display using the Adafruit_SSD1306 library.
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

// Declare variables for menu navigation.
const int NUM_MENUS = 3;
const int MENU_ITEMS[NUM_MENUS] = {6, 5, 7};
const char *MENU_NAMES[NUM_MENUS] = {"Menu 1", "Menu 2", "Menu 3"};
const char *SUBMENU_NAMES[NUM_MENUS][7] = {
    {"Submenu 1-1", "Submenu 1-2", "Submenu 1-3", "Submenu 1-4", "Submenu 1-5", "Submenu 1-6"},
    {"Submenu 2-1", "Submenu 2-2", "Submenu 2-3", "Submenu 2-4", "Submenu 2-5"},
    {"Submenu 3-1", "Submenu 3-2", "Submenu 3-3", "Submenu 3-4", "Submenu 3-5", "Submenu 3-6", "Submenu 3-7"}};

int currentMenu = 0;
int subMenu = 0;
int parentMenu = 0;
int scrollOffset = 0; // Keep track of the current scroll offset.

int buttonPin = 2; // Connect the button to digital pin D2.
bool lastButtonState = HIGH;

void setup() {
  Serial.begin(9600);

  Wire.begin();

  // Initialize the OLED display.
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;)
      ; // Don't proceed, loop forever
  }

  pinMode(buttonPin, INPUT_PULLUP);

  // Clear the screen before displaying menu items.
  display.clearDisplay();
  display.display();
}

void loop() {
  bool buttonState = digitalRead(buttonPin);

  if (buttonState != lastButtonState) {
    lastButtonState = buttonState;
    if (buttonState == LOW) {
      // Button is pressed, perform the menu action.
      performMenuAction();
    }
  }

  // Update the OLED display with the current menu items and scrollbar.
  display.clearDisplay();
  display.setCursor(0, 0);
  display.setTextSize(1);
  display.setTextColor(WHITE);

  // Display parent menu name at the top of the screen.
  display.print(MENU_NAMES[parentMenu]);
  display.print(" > ");

  // Calculate the maximum number of visible submenu items.
  int maxVisibleItems = min(MENU_ITEMS[currentMenu], 4);

  // Display the submenu items with the current scroll offset.
  for (int i = scrollOffset; i < scrollOffset + maxVisibleItems; i++) {
    if (i == subMenu) {
      display.setTextColor(BLACK, WHITE); // Highlight selected item.
    } else {
      display.setTextColor(WHITE);
    }
    display.print(SUBMENU_NAMES[currentMenu][i]);
    display.println();
  }

  // Calculate and display the scrollbar.
  int scrollbarHeight = SCREEN_HEIGHT - (maxVisibleItems * 8);
  if (scrollbarHeight > 0) {
    int scrollbarPosition = map(scrollOffset, 0, MENU_ITEMS[currentMenu] - maxVisibleItems, 0, scrollbarHeight);
    display.drawLine(SCREEN_WIDTH - 2, 0, SCREEN_WIDTH - 2, SCREEN_HEIGHT, WHITE);
    display.fillRect(SCREEN_WIDTH - 2, scrollbarPosition, 2, maxVisibleItems * 8, WHITE);
  }

  display.display();
}
void performMenuAction() {
  unsigned long buttonPressTime = millis();
  delay(50);
  bool buttonState = digitalRead(buttonPin);
  if (buttonState == LOW) {
    // Button is still pressed.
    while (digitalRead(buttonPin) == LOW) {
      // Wait for the button to be released.
    }
    unsigned long buttonReleaseTime = millis();
    unsigned long buttonDuration = buttonReleaseTime - buttonPressTime;

    if (buttonDuration < 200) {
      // Short press: Scroll down one item.
      if (subMenu < MENU_ITEMS[currentMenu] - 1) {
        subMenu++;
        if (subMenu >= scrollOffset + 4) {
          scrollOffset++;
        }
      }
    } else {
      // Long press: Go back to parent menu.
      if (parentMenu != currentMenu) {
        currentMenu = parentMenu;
        subMenu = 0;
        scrollOffset = 0;
      }
    }

    // If a submenu was selected, enter it and reset the scroll offset.
    if (currentMenu < NUM_MENUS - 1 && subMenu < MENU_ITEMS[currentMenu]) {
      parentMenu = currentMenu;
      currentMenu++;
      subMenu = 0;
      scrollOffset = 0;
    }
  }
}


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