#include <htc.h>
#include <sys.h>
#include <stdlib.h>

unsigned char i, j, k, m, n, dat1, dat2, dat3, dat4, hbyte[20], lbyte[20];
unsigned char dat1a, dat2a, dat3a, dat4a;

void main(void)
{
 while(1)
 {
 RCSTA=0b10010000;  //enable serial port, enable continuous read
 TXSTA=0b00100100;  //transmit enabled, asyncronous, high speed mode
 SPBRG=20;          //baud rate = 56K
 OPTION=0b00000000;
 TRISA=0b00000001;  //set A0 as an input port
 ADCON1=0b10001110;  //right justified,fast speed,only A0 is A2D
 ADCON0=0b00000001;  //fast speed, channel A0, turn A2D on

 for (j=1;j<20;j++)
   {
      ADCON0=0b00000101;    //initiate A2D on channel A0
      while((ADCON0 & 0b00000100) == 4) {};   //wait till A2D is done
      hbyte[j]=ADRESH;                  //capture high bytes
      lbyte[j]=ADRESL;                  //capture low bytes
   }
 for (j=1;j<20;j++)
   { 
      while((PIR1 & 0b00010000)==0){};   //wait till serial port is cleared
      TXREG=hbyte[j];                    //transfer high byte
      for(i=1;i<3;i++) {}                //wait some time
      while((PIR1 & 0b00010000)==0){};
      TXREG=lbyte[j];
      for(i=1;i<3;i++) {}       
   }
 }
}