main.cpp

00001 #include "mbed.h"
00002 #include "TextLCD.h"
00003 #include "Keypad.h"
00004 TextLCD lcd(PTE24, PTE25, PTD1, PTD3, PTD2, PTD0, TextLCD::LCD16x2); // rs, e, d4-d7
00005 Keypad kpad(PTA2, PTB23, PTA1, PTB9, PTC4, PTC12, PTC3, PTC2);
00006 DigitalIn borrador(PTC17);
00007 int main() {
00008     char key;
00009     int released = 1;
00010     
00011     while(1){
00012         if(borrador){ //Testear la dualidad del botón borrador con el ejercicio 3.
00013             lcd.cls();
00014         }
00015         else{
00016             key = kpad.ReadKey();                   //read the current key pressed
00017 
00018         if(key == '\0')
00019             released = 1;                       //set the flag when all keys are released
00020            
00021         if((key != '\0') && (released == 1)) {  //if a key is pressed AND previous key was released
00022             lcd.printf("%c", key);            
00023             released = 0;                       //clear the flag to indicate that key is still pressed
00024         }
00025         }
00026     }
00027 }