5 way switch shield code problem

hi,

i have lcd4884 shield , try perform button press activate action once when button pressed.
i use libary called analogkeypad has debounce build in.
http://www.oryshed.com/arduino/lcd-48x84-shield

although switch function works perfect , gives single printfunction in monitor when select key pressed , kept pressed.
however own function activated switch key press needs perform single step keeps running.

i need function step thorugh menu stucture , other button functions perform other steps.

must simple overlook basic.

code: [select]



#include "analogkeypad.h"

/*************************************************
* send pressed key serial monitor *
**************************************************/
void printkey(int8_t keycode);

boolean btnselect;

void setup()
{
  serial.begin(9600);
  serial.println(f("analog keypad v1.0"));
  serial.println(f("press key..."));
}

analogkeypad keypad(a0);

void loop()
{   
int8_t keycode;

// simple way read keys
// keyupevent must called regularly main loop
// takes care of reading analog input , debouncing
if ( (keycode = keypad.keyupevent()) != analogkeypad::no_key)
{  serial.print("event key up: ");
    printkey(keycode);
}     
 
//    alternative way of reading keys if need more fine grained control
//       if (keypad.run())                                      // must called regularly main loop
//       { if (keypad.waspressed())
//             serial.print(f("pressed: "));
//         else if (keypad.wasreleased())
//             serial.print(f("released: "));
//
//         printkey(keypad.getcurrentkey());
//       }

if (btnselect == 1)
{
  serial.println ("   print once per button press   ");
}

}

void printkey(int8_t keycode)
{   string keyname;

    switch (keycode)
    { case 'u':
           keyname = "up";
           
           break;
      case 'd':
           keyname = "down";
         
           break;
      case 'l':
           keyname = "left";
           
           break;
      case 'r':
           keyname = "right";
           
           break;
      case 's':
           keyname = "===============================================select";
           btnselect = 1;
           break;
    }
    serial.println(keyname);
}



paco

in case wondering, me...

code: [select]

/**********************************************************************************
must called regularly main loop register key events.

returns key code of released key or no_key if no key released
**********************************************************************************/
int8_t analogkeypad::keyupevent()
{
    if (run() && wasreleased())
        return getcurrentkey();
    else
        return analogkeypad::no_key;
}

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