Buttons not responding using pullup resistors

i using ethernet pro (based on arduino uno) , using 5-way tactile switch (joystick) (http://www.sparkfun.com/products/11160)

i followed schematic (http://dlnmh9ip6v2uc.cloudfront.net/datasheets/breakoutboards/5-way_tactile_switch_bob_v10.pdf) connected "vcc" (pin1 on joystick) 5v source , resistors 5v power source well. way, connected "pin1, vcc" , ends of resistors in parallel 5v source. , had common ground.

problem is, there's no response... idea how can troubleshoot? also, here's code using...

code: [select]

#include <bmserial.h>
#include <roboclaw.h>

#define address 0x80



// joypad buttons
const int upa = 0;
const int downa = 1;
const int upb = 2;
const int downb = 3;

// roboclaw stuff
roboclaw roboclaw(12,13);
int mspeed = 64;

void setup()
{
  pinmode(upa, input);
  pinmode(downa, input);
  pinmode(upb, input);
  pinmode(downb, input);

  digitalwrite(0, high);
  digitalwrite(1, high);
  digitalwrite(2, high);
  digitalwrite(3, high);
 
  serial.begin(2400);
}

void loop()
{
     if(digitalread(upa) == high)
  {   
    roboclaw.forwardm1(address, mspeed);
  }

    if(digitalread(downa) == low)
  {   
    roboclaw.backwardm1(address, mspeed); 
  }
 
    if(digitalread(upb) == low)
  {   
    roboclaw.forwardm2(address, mspeed); 
  }
 
    if(digitalread(downb) == low)
  {   
    roboclaw.backwardm2(address, mspeed); 
  }
   
}

quote from: teamhydraucd on apr 29, 2012, 08:33 am

problem is, there's no response... idea how can troubleshoot?

yes...

1. use neither pin 0 nor pin 1 pushbuttons.  use them serial.

2. riddle code serial.println calls can differentiate between pushbutton problems , roboclaw problems.

quote

[font=courier new]void loop()
{
  if(digitalread(upa) == high)
  {   
    serial.println( f( "up" ) );
    roboclaw.forwardm1(address, mspeed);
  }

  if(digitalread(downa) == low)
  {   
    serial.println( f( "down" ) );
    roboclaw.backwardm1(address, mspeed); 
  }
[/font]

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