101 lines
2.4 KiB
Arduino
101 lines
2.4 KiB
Arduino
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/*4x4 Matrix Keypad connected to Arduino
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This code prints the key pressed on the keypad to the serial port*/
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//LIBRERIAS
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#include <Wire.h>
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#include <Keypad.h>
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#include <LiquidCrystal.h>
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//------------
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//MATRIZ
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const byte numRows= 3; //number of rows on the keypad
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const byte numCols= 11; //number of columns on the keypad
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//keymap defines the key pressed according to the row and columns just as appears on the keypad
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char keymap[numRows][numCols]=
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{
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{'z','b','c','v','b',' ','n','m','.','?','ç'},
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{'q','w','e','r','t','y','u','i','p','`','o'},
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{'a','s','d','f','g','h','j','k','ñ','´','l'}
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};
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//Code that shows the the keypad connections to the arduino terminals
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byte rowPins[numRows] = {31,33,35}; //Rows 0 to 3 13 12 11
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byte colPins[numCols]= {37,39,41,43,45,47,49,51,53,52,50}; //Columns 0 to 3 10 9 8 7 6 5 4 3 2 14 15
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//-------------
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//initializes an instance of the Keypad class
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char texto[7];
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int v1;
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int v2;
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int x=0;
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byte a = 0;
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int value=0;
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Keypad myKeypad= Keypad(makeKeymap(keymap), rowPins, colPins, numRows, numCols);
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LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
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void setup()
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{
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lcd.begin(16, 2); // start the library
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lcd.setCursor(0,0);
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//ENVIADO
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pinMode(22,OUTPUT);
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pinMode(24,INPUT);
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digitalWrite(22, HIGH);
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Wire.begin();
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//-------
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Serial.begin(9600);
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v1 = 0;
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v2 = 0;
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}
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byte env = 0;
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//If key is pressed, this key is stored in 'keypressed' variable
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//If key is not equal to 'NO_KEY', then this key is printed out
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//if count=17, then count is reset back to 0 (this means no key is pressed during the whole keypad scan process
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void loop(){
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value=digitalRead(24);
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char keypressed = myKeypad.getKey();
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v1 = 0;
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if (x != 7){
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if (keypressed != NO_KEY){
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v1 = 1;
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if(v1 == 1 && v2 == 0){
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texto [x] =keypressed;
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lcd.print(keypressed);
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Serial.print(keypressed);
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//Serial.print(texto[x]);
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x++;
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}
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}
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}
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v2 = v1;
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delay(100);
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if(keypressed == '?'){
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lcd.clear();
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lcd.print("ENVIANDO...");
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//----ENVIO----
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enviar();
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delay(5000);
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x = 0;
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lcd.clear();
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//-------------
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}
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}
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void enviar()
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{
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int Nletras= x;
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int indexLetras=0;
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for(int Nmariposas=0; Nmariposas<Nletras; Nmariposas=Nmariposas+1)
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{
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Wire.beginTransmission(Nmariposas); // transmit to device #x+1
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Wire.write(texto[Nmariposas]);
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Wire.endTransmission(); // stop transmitting
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}
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}
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