32 lines
580 B
C++
32 lines
580 B
C++
#include <Keypad.h>
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const byte ROWS = 4;
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const byte COLS = 4;
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char keys[ROWS][COLS] = {
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{'1','2','3','A'},
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{'4','5','6','B'},
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{'7','8','9','C'},
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{'*','0','#','D'}
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};
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byte rowPins[ROWS] = {5, 4, 3, 2};
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byte colPins[COLS] = {9, 8, 7, 6};
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const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
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LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
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Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
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void setup(){
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lcd.begin(16, 2);
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Serial.begin(9600);
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}
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void loop(){
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char key = keypad.getKey();
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if (key){
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Serial.println(key);
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}
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}
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