using LPC2119 : PWM, Timers, and external interrupts.

I'm working on a system, where I have: 3 switches, 2 led's, and a motor (set PWM single edge)Note: the motor is replaced with 2 LEDs on PWM1 and PWM3(configured on P0.0 and P0.1). When the switch on P0.6 is pressed PWM1 is activated and after a finite delay PWM1 switches off and PWM3 switches on, and keeps repeating. the other 2 switches are set with external interrupts on P0.14 and P0.15 and the 2 leds on P0.12 and P0.13, when any of these 2 switches is activated the PWM1 and PWM3 are turned OFF. while if P0.14 switch is LOW the led on P0.12 binkis at a rate of 200ms and when the switch on P0.15 is activated LOW the LED on P0.13 blinks at a rate of 100ms.

this is my code, when compiled on ARM7 LPC2119 the leds on pins P0.0 and P0.1 will be ON. any advice pls?

#include <LPC21xx.h>

//global variables
unsigned int SW;

__irq void T0_isr (void);
void EXTINTVectoredIRQ (void) __irq;

void one_sec (void);
void led_100ms (void);
void led_200ms (void);

int main ()
{

        PLLCFG = 0x00000022;
        PLLCON = 0x00000001;

        PLLFEED = 0x000000AA; // Update PLL registers with feed sequance
        PLLFEED = 0x00000055;

        while(! (PLLSTAT & 0x00000400)); // Test Lock bit

        PLLCON = 0x00000003; // Connect the PLL

        PLLFEED = 0x000000AA; // Update PLL registers
        PLLFEED = 0x00000055;

        VPBDIV = 0x00000002; // Set the VLSi peripheral bus to 30 Mhx

        PINSEL0 = 0xFF00300F; // port p0.1 and p0.0 is set for PWM
                              // Enable the interrupts
                              // set ports for maths registor MR0 and MR1
        PINSEL1 = 0; //set as GPIO
        PINSEL2 = 0; //set as GPIO

        IO0DIR = 0XFFFF3FBF; //p0.6, p0.14 and p0.15 inputs

        //PWM initialization
            PWMTCR = 2; //Reset counter, disable PWM peripheral
            PWMPR = 3; //PWMTC runs @ 7.5MHz
            PWMMR0 = 9000;
            PWMMR1 = 50;
            PWMMR3 = 100;
            PWMMCR = 2; // PWMTC will reset on match with PWMMRO
            PWMPCR = 0x0A00; // enable PWM1 and PWM3
            PWMLER = 0x0B; //writing ones to corresponding bits so that the values loaded
                           //on the match regsters will become effective
            PWMTCR = 9; // enable PWM peripheral and start counters

        //external interrupts
        VICVectCntl0 = 0x0000002F;//select priority slot for given interrupt
        VICVectAddr0 = 0x0000002F & (unsigned)EXTINTVectoredIRQ;
        VICIntEnable = 0x00008000;//enable interrupt
        VICVectCntl4 = 0x0000002E;
        VICVectAddr4 = 0x0000002E &(unsigned)T0_isr;
        VICIntEnable = 0x00008000;//enable interrupt

        while(1)
        {

                SW = IO0PIN & 0x0000C040;//reading all switches at the same time P0.6,
                                         //P0.14 & P0.15

                if (SW==0x00000040) //when p0.6
                {
                        IO0SET = 0x00000001;//P0.0 on
                        one_sec();
                        IO0CLR = 0x00000001;//P0.0 off

                        IO0SET = 0x00000002;//P0.1 on
                        one_sec();
                        IO0CLR = 0x00000002;//P0.1 off
                }

                if(SW == 0x00008000) //if P0.15 is LOW
                {
                        led_100ms();
                }

                if (SW == 0x00004000)  //if P0.14 is LOW
                {
                        led_200ms();
                }
        }
}

void EXTINTVectoredIRQ (void) __irq
{
        IO0SET = 0x00003000;
        EXTINT = 0x00000001;//clear peripheral interrupts flag
        VICVectAddr = 0x00000000;//write to signal ed of interrupt
}

void T0_isr (void) __irq   //ISR have to be written before the main function
  {
        while(1)
          {
        T0IR = 0x00000001; //writing 1 on match 0 interrupt flag will reset it
        VICVectAddr = 0x00000000; //end of interrupt - dummy write
          }
  }

void led_200ms (void)
  {
         IO0CLR = 0x00002003;// LED OFF
         IO0SET = 0x00001000; // LED ON P0.12

                        //timer
             T1TCR = 0x00000020;
             T1IR = 0x00000000;
             T1CTCR = 0x00000000;// timer mode
             T1TC = 0x00000000;
             T1PR = 0;
             T1PC = 0x00000000;
             T1MCR = 0x00000130;
             T1EMR = 0xFFFF0000;
             T1MR0 = 6000000;/////200ms
             T1MR1 = 6000000;
             T1TCR = 0x00000010;

         IO0CLR = 0x00001000;// LED OFF
  }

void led_100ms (void)
  {
        IO0CLR = 0x00001003;// LED OFF
        IO0SET = 0x00002000; // LED ON P0.13

                        //timer
            T1TCR = 0x00000002;
            T1IR = 0x00000000;
            T1CTCR = 0x00000000;
            T1TC = 0x00000000;
            T1PR = 0;
            T1PC = 0x00000000;
            T1MCR = 0x00000013;
            T1EMR = 0xFFFF0000;
            T1MR0 = 3000000;/////100ms
            T1MR1 = 3000000;
            T1TCR = 0x00000001;

         IO0CLR = 0x00002000;// LED OFF
  }

void one_sec (void) //Local
{
        unsigned short w;
        unsigned short a;
        unsigned short b;

        for(a=0; a<=10; a++)//for 10sec
        {
        for(w=0; w<20010; w++)// 1sec x 10
                  {
                    for(b=0; b<5902; b++)// 1ms
                    {
                          //do nothing
                    }
                  }
        }
}