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cpp

Careful Coyote answered on March 18, 2024 Popularity 1/10 Helpfulness 1/10

answer cpp

cpp

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#include <Arduino.h>
#include <U8g2lib.h>
#include <Keypad.h>
#include <Keyboard.h>

// Define the OLED display
U8G2_SSD1322_NHD_128X64_F_4W_SW_SPI u8g2(U8G2_R0, 13, 11, 10, 9, 8);

// Define keypad pins and keys
const byte ROWS = 5;
const byte COLS = 5;
byte rowPins[ROWS] = {2,  3,  4,  5,  6};  // Connect to the row pinouts of the keypad
byte colPins[COLS] = {A0, A1, A2, A3, A4}; // Connect to the column pinouts of the keypad
char keys[ROWS][COLS] = {
  {'p',   '1',   '2',   '3',   'A'},
  {'4',   '5',   '6',   '7',   'B'}, 
  {'8',   '9',   '0',   '#',   'C'},
  {'*',   'F',   'E',   'D',   'G'},
  {'H',   'I',   'J',   'K'}
};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Power state flag
bool powerOn = false;

// Track button state
bool buttonPressed = false;
unsigned long buttonPressStartTime = 0;

void setup() {
  Serial.begin(9600);
  Keyboard.begin();
  u8g2.begin();
  u8g2.setFont(u8g2_font_6x10_tf);
  u8g2.setFontRefHeightExtendedText();
  u8g2.setDrawColor(1);
  u8g2.setFontPosTop();
  u8g2.setFontDirection(0);
  u8g2.drawStr(5, 10, "Power is OFF");
  u8g2.sendBuffer();
}

void loop() {
  char key = keypad.getKey();

  // Handle 'p' button press
  if (key == 'p') {
    buttonPressed = true;
    buttonPressStartTime = millis();
  } else if (buttonPressed && key == NO_KEY) { // Handle button release
    buttonPressed = false;
    unsigned long duration = millis() - buttonPressStartTime;

    if (duration >= 3000) { // If button is held for 3 seconds or more
      powerOn = !powerOn;
      if (powerOn) {
        displayMessage("Power is ON");
        delay(2000); // Display for 2 seconds
        clearDisplay();
        displayMessage("System is Ready");
        delay(2000);
        clearDisplay();
        displayMessage("Press Enter Keys");
        delay(2000);
        clearDisplay();
      } else {
        displayMessage("Power is OFF");
        delay(2000); // Display for 2 seconds
        clearDisplay();
      }
    }
  }

  // Handle keypad inputs when power is on
  if (powerOn && key != NO_KEY) {
    Keyboard.write(key);
    displayMessage(String(key) + " [ OK ]");
    delay(1000); // Display for 1 second
    clearDisplay();
  }
}

// Display a message on the OLED display
void displayMessage(const String& message) {
  u8g2.clearBuffer();
  u8g2.drawStr(5, 10, message.c_str());
  u8g2.sendBuffer();
}

// Clear the OLED display
void clearDisplay() {
  u8g2.clearBuffer();
  u8g2.sendBuffer();
}

Popularity 1/10 Helpfulness 1/10 Language c

Source: chat.openai.com

Tags: c

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Contributed on Mar 18 2024

Careful Coyote

0 Answers Avg Quality 2/10

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