Guten Tag,
ich versuche mit einem 4x4 Tastenfeld eine Tastatur zu emuieren (ähnlich wie bei den sehr alten Handys)
z.b. taste "1" einmal drücken kommt eine "1" zwei mal kommt eine "A" ..usw
dabei gibt das Arduino Mega die geschriebene Wörter auf einem Lcd aus.
Das Problem ist dass es nach eine gewisse Zeit keine Buchstaben mehr ausgibt sondern direkt die Nummern.
im Anhang ist das Code mit einem Bild von dem Problem
Ich danke euch im voraus für Lösungen bzw. Empfehlungen
mfg Zakoo
#include <Keypad.h>
#include <LiquidCrystal.h>
//Hier wird die größe des Keypads definiert
const byte COLS = 4; //3 Spalten
const byte ROWS = 4; //4 Zeilen
//Die Ziffern/Zeichen:
char hexaKeys[ROWS][COLS] = {
{'1' , '2' , '3' , 'A'},
{'4' , '5' , '6' , 'B'},
{'7' , '8' , '9' , 'C'},
{'*' , '0' , '#' , 'D'}
};
char Charakters[16][4] = {
{ '1' , 'A' , 'B' , 'C' }, //1
{ '2' , 'D' , 'E' , 'F' }, //2
{ '3' , 'G' , 'H' , 'I' }, //3
{ '.' , '.' , '.' , '.' }, //A remove the last latter
{ '4' , 'J' , 'K' , 'L' }, //4
{ '5' , 'M' , 'N' , 'O' }, //5
{ '6' , 'P' , 'Q' , 'R' }, //6
{ '.' , '.' , '.' , '.' }, //B clear the lcd
{ '7' , 'S' , 'T' , 'U' }, //7
{ '8' , 'V' , 'W' , 'X' }, //8
{ '9' , 'Y' , 'Z' , '.' }, //9
{ '.' , '.' , '.' , '.' }, //C clear the actual lcd row
{ '*' , '\'' , '.' , '-' }, //*
{ '0' , ' ' , ':' , ')' }, //0
{ '.' , '.' , '.' , '.' }, //#
{ '.' , '.' , '.' , '.' } //D changes the lcd row
};
byte colPins[COLS] = {5 , 4 , 3 , 2 }; //Definition der Pins für die 3 Spalten
byte rowPins[ROWS] = { 10 , 9 , 8 , 7 };//Definition der Pins für die 4 Zeilen
char pressedKey; //pressedKey entspricht in Zukunft den gedrückten Tasten
Keypad myKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); //Das Keypad kann absofort mit myKeypad angesprochen werden
LiquidCrystal lcd(40, 41, 30, 31, 32, 33);
byte c = 0;
byte r = 0;
String WritenWord = "";
String Temp = "";
String TopString = "";
String BottomString = "";
byte LcdRow = 0;
byte PressedKeyRow = -1;
byte PressedKeyCol = -1;
byte LastPressedKeyRow = -1;
byte LastPressedKeyCol = -1;
char NewLetter = '.';
unsigned int counter = 0;
unsigned int LastTime;
unsigned int Offset = 500;
bool test = false;
void setup() {
lcd.begin(16, 2);
lcd.cursor();
Serial.begin(9600);
}
void loop() {
writeWord();
}
/*
*/
void writeWord() {
if (checkKey()) {
while ((LastTime + Offset) > millis()) {
test = checkKey();
// Serial.print((LastTime + Offset));
Serial.println("WL");
// Serial.println(millis());
}
Serial.println("OUT");
LastPressedKeyRow = -1;
LastPressedKeyCol = -1;
counter = 0;
if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'A') {
WritenWord = Temp;
lcd.setCursor(0, LcdRow);
lcd.print(WritenWord);
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'B') {
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'C') {
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'D') {
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == '#') {
} else {
WritenWord += NewLetter;
lcd.setCursor(0, LcdRow);
lcd.print(WritenWord);
/******************************************************************************/
// Serial.print("writen Word is : ");
//Serial.println(WritenWord);
}
}
}
/*
*/
bool checkKey() {
pressedKey = myKeypad.getKey(); //pressedKey entspricht der gedrückten Taste
if (pressedKey) {
LastTime = millis();
for (r = 0 ; r < ROWS ; r++) {
for (c = 0 ; c < COLS ; c++) {
if (pressedKey == hexaKeys[r][c]) {
PressedKeyRow = r;
PressedKeyCol = c;
if (PressedKeyRow == LastPressedKeyRow && PressedKeyCol == LastPressedKeyCol) {
counter ++;
// Serial.println(counter);
} else {
counter = 0;
LastPressedKeyRow = PressedKeyRow;
LastPressedKeyCol = PressedKeyCol;
}
updetLCD();
return true;
}
}
}
}
return false;
}
/*
*/
void updetLCD() {
if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'A') {
counter = 0;
deletLastLetter();
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'B') {
counter = 0;
clearLcd();
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'C') {
counter = 0;
clearActualRow();
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == 'D') {
counter = 0;
changLcdRow();
} else if (hexaKeys[PressedKeyRow][PressedKeyCol] == '#') {
counter = 0;
scrollLcd();
} else {
NewLetter = Charakters[PressedKeyRow * 4 + PressedKeyCol][counter % 4];
Temp = WritenWord + NewLetter ;
lcd.setCursor(0, LcdRow);
lcd.print(Temp);
}
LastTime = millis();
}
Keysfunction:
void deletLastLetter() {
if (WritenWord.length() > 0) {
Temp = WritenWord;
Temp.remove(Temp.length() - 1);
lcd.clear();
if (LcdRow > 0) {
lcd.setCursor(0, 0);
lcd.print(TopString);
} else {
lcd.setCursor(0, 1);
lcd.print(BottomString);
}
lcd.setCursor(0, LcdRow);
lcd.print(Temp);
}
}
void clearLcd() {
WritenWord = "";
TopString = "";
BottomString = "";
LcdRow = 0;
lcd.clear();
}
void clearActualRow() {
WritenWord = "";
lcd.clear();
if (LcdRow > 0) {
lcd.setCursor(0, 0);
lcd.print(TopString);
lcd.setCursor(0, 1);
} else {
lcd.setCursor(0, 1);
lcd.print(BottomString);
lcd.setCursor(0, 0);
}
}
void changLcdRow() {
if (LcdRow > 0) {
LcdRow = 0;
BottomString = WritenWord;
WritenWord = TopString;
lcd.setCursor(WritenWord.length(), LcdRow);
} else {
LcdRow = 1;
TopString = WritenWord;
WritenWord = BottomString;
lcd.setCursor(WritenWord.length(), LcdRow);
}
}
void scrollLcd() {
for (int positionCounter = 0; positionCounter < 13; positionCounter++) {
lcd.scrollDisplayLeft();
delay(200);
}
for (int positionCounter = 0; positionCounter < 29 ; positionCounter++) {
lcd.scrollDisplayRight();
delay(200);
}
for (int positionCounter = 0; positionCounter < 16; positionCounter++) {
lcd.scrollDisplayLeft();
delay(200);
}
}
KeyPad_with_Lib.ino (4.54 KB)
KeysFunction.ino (1.38 KB)
