问在PIC12LF1552上读取pic输入

EN

#include <xc.h>
#include "pic12lf1552.h"
#include <stdio.h>
#include <stdlib.h>
// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

// CONFIG1
#pragma config FOSC = INTOSC    // Oscillator Selection (INTOSC oscillator: I/O function on CLKIN pin)
#pragma config WDTE = OFF       // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable (PWRT disabled)
#pragma config MCLRE = ON       // MCLR Pin Function Select (MCLR/VPP pin function is MCLR)
#pragma config CP = OFF         // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config BOREN = OFF      // Brown-out Reset Enable (Brown-out Reset disabled)
#pragma config CLKOUTEN = OFF   // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)

// CONFIG2
#pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)
#pragma config STVREN = OFF     // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will not cause a Reset)
#pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LPBOR = OFF      // Low-Power Brown Out Reset (Low-Power BOR is disabled)
#pragma config LVP = OFF        // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)


#define LED PORTAbits.RA2
#define SWITCH PORTAbits.RA5

void MSDelay (unsigned int);

void main(void)
{
    //Set up I/O pins
    TRISAbits.TRISA2 = 0; //RA2 = LED output
    TRISAbits.TRISA5 = 1; //RA5 = switch
    ADCON1=0b00100;
 //    ADCON1 = ;
    //int b;
   // int i;



    if(SWITCH == 0)
    {
        LED=1;
        MSDelay(2000);
        LED=0;
    }
    else
    {
        LED=0;
        MSDelay(2000);
    }
    }



void MSDelay(unsigned int itime)
{
    unsigned int i;
    unsigned char j;
    for(i=0; i<itime;i++);
    for(j=0; j<165;j++);
}