KeyBuffer Class Reference

 #include "mbed.h"
 #include "RepeatButton.h"

 Serial pc(USBTX, USBRX);

 #define REPEAT_DELAY 500
 #define REPEAT_PERIOD 100
 #define KEY_LEFT 1
 #define KEY_UP 2
 #define KEY_RIGHT 3
 #define KEY_DOWN 4
 #define KEY_PUSH 5
 
 KeyBuffer TheKeyBuffer(32);
 
 RepeatButton naviLeft(p5, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_LEFT);
 RepeatButton naviUp(p6, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_UP);
 RepeatButton naviRight(p7, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_RIGHT);
 RepeatButton naviDown(p9, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_DOWN);
 RepeatButton naviPush(p8, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_PUSH);
 
 DigitalOut led1(LED1);
 
 int main() 
 {
     int x=0, y=0, value;
     pc.baud(115200);
     pc.printf("Repeat key demo.\r\n");
     while(1) 
     {
         // Read TheKeyBuffer until empty.
         for(value = TheKeyBuffer.Read(); value != -1; value = TheKeyBuffer.Read())
         {
             switch(value)
             {
                 case KEY_LEFT:
                     x--;
                 break;
                 
                 case KEY_RIGHT:
                     x++;
                 break;
                 
                 case KEY_DOWN:
                     y--;
                 break;
                 
                 case KEY_UP:
                     y++;
                 break;
                 
                 case KEY_PUSH:
                     x = 0;
                     y = 0;
                 break;
             }
         }
         pc.printf("(x, y) = (%d, %d)\r\n", x, y);
         wait(0.05);
         led1 = led1^1;
     }
 }