BCD-Code Tastenabfrage, Dezimalzahl Ausgabe

International Deutsch
40

kopiere Sketch hierher damit Sie den Beitrag als Lösung markieren können.

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4); //  addresse 0x3F schreiben wenn mit 0x27 nicht klappt
#include <Keypad.h>

char H[3];
char L[3];
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'0', '1', '2', '3'},
  {'4', '5', '6', '7'},
  {'8', '9', 'A', 'B'},
  {'C', 'D', 'E', 'F'}
};

Keypad keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);


void setup() {
  lcd.init();
  lcd.clear();
  lcd.setCursor(0, 0); lcd.print("FEDC BA98 7654 3210");
  lcd.setCursor(0, 01); lcd.print("0000 0000 0000 0000");
}

void loop() {
  static uint16_t Total = 0;
  char key = keypad.getKey();
  if (key) {
    if (key > '9')key -= 7;
    key -= '0';

    Total = Total ^ (1 << key);

    lcd.setCursor(0, 1);
    for (byte i = 16; i > 0; i--) {
      lcd.print(Total & 1 << i-1?'1':'0');
      if (i % 4 == 1)lcd.print(' ');
    }

    sprintf (H, "%02X", Total >> 8);
    sprintf (L, "%02X", Total & 0xFF);
    lcd.setCursor(7, 2);
    lcd.print(H);
    lcd.setCursor(17, 2);
    lcd.print(L);

    lcd.setCursor(12, 3);
    lcd.print("     ");
    lcd.setCursor(12, 3);
    lcd.print(Total);
    key=0;
    delay(100);
  }
}
1 Like