#include "mbed.h"
Serial pc(USBTX,USBRX);
DigitalOut myled(LED2);
int i=0;
int deep[100];
void initadc()
{
  pc.printf("in adc\n");
  LPC_SC->PCONP|=(1<<1);////power up timr
  LPC_SC->PCONP|=(1<<15);/// SELECT PCONP GPIO 15th pin
  LPC_SC->PCONP|=(1<<12);/// SELECT PCONP PCADC 12TH pin
  LPC_SC->PCLKSEL0 &= ~(1<<24);
  LPC_SC->PCLKSEL0 &= ~(1<<25);//SETTING UP OF CCLK for 25Mhz;
  int CCLK = LPC_ADC->ADCR|=(1<<8); ///SET PRESCALAR VALUE /1 so that it works at 13mhz;ie works at 12.5 Mhz
  pc.printf("cclkvalue is %d\n",CCLK);
  LPC_PINCON->PINSEL1|=(1<<14);/// select pin (p0.23 ad0.0)
  LPC_PINCON->PINMODE1|=(2<<15);///
  LPC_ADC->ADCR |=(1<<21); //ADC on
  LPC_ADC->ADINTEN |=(1<<0); /// interrupt enable on dis pin 
}
void initchan(int ch)
{
 LPC_ADC->ADCR|=(1<<ch);//SELECT CHANNEL(SEL BITS)
 pc.printf("in channel");
}
void initpcon()
{    
   pc.printf("in pconp\n");
   LPC_SC->PCONP|=(1<<1);////power up timr
   LPC_SC->PCLKSEL0 &=~(1<<2)|~(1<<3); ////////cclk/4=25mhz;
}
void inittimer()
{   
     pc.printf("intimer\n");
     LPC_TIM0->CTCR&=~(1<<0);////init timer
     LPC_TIM0->TCR=(1<<1);////RESET TIMER
     LPC_TIM0->PR=0x00;
     LPC_TIM0->MR0= 2500;
     LPC_TIM0->MCR =(3<<0);///ENABLE TIMER0 INTERRUPT 
 }

 void deepu()
 {

      while((LPC_TIM0->IR&0x01)!=0x01);///wait till it matches the TC value of MRO
      LPC_ADC->ADCR |= (1<<24); // START = start conversion now 
      while ((LPC_ADC->ADGDR & (0x80000000))==0); //wait till done bit in adcr is set/* Wait for Conversion end */ 
      deep[i] = (LPC_ADC->ADDR0 >> 4) & 0xFFF;
      LPC_ADC->ADCR &= ~(1<<24);///stop adc conversion
      LPC_TIM0->IR|=(1<<0); ///AND disable 
      LPC_TIM0->MCR&=~(1<<0);
      pc.printf("%f\n",(float)(deep[i]*((float)3.3/4096)));
      myled=!myled;
       }
void lool()
{
     LPC_TIM0->MCR =(3<<0);/// ENABLE INTERRUPT TIMER AND RESET
     NVIC_EnableIRQ(TIMER0_IRQn);
     LPC_TIM0->TCR=(1<<0);
}
 int main()
 {
     //int i;
     initadc();
     initchan(0);
     initpcon();
     inittimer();
     NVIC_SetVector(TIMER0_IRQn,(uint32_t)&deepu); 
     
    /// inittimer();

while(1)
{
        lool();
 }    
  }