Microchip Technology MA160014 Data Sheet

 2010-2012 Microchip Technology Inc.

DS41412F-page 325

#include "p18cxxx.h"

/**************************************************************************/

/*Set up CTMU *****************************************************************/

/**************************************************************************/

void setup(void)

{ //CTMUCONH/1 - CTMU Control registers

    

    CTMUCONH = 0x00;    //make sure CTMU is disabled

    CTMUCONL = 0x90;

    //CTMU continues to run when emulator is stopped,CTMU continues

    //to run in idle mode,Time Generation mode disabled, Edges are blocked

    //No edge sequence order, Analog current source not grounded, trigger

    //output disabled, Edge2 polarity = positive level, Edge2 source =

    //source 0, Edge1 polarity = positive level, Edge1 source = source 0,

    

    

    //CTMUICON - CTMU Current Control Register

    CTMUICON = 0x01;    //0.55uA, Nominal - No Adjustment

    

/**************************************************************************/

//Set up AD converter;

/**************************************************************************/

    TRISA=0x04;                 //set channel 2 as an input

    

    // Configure AN2 as an analog channel

ANSELAbits.ANSA2=1;

TRISAbits.TRISA2=1;

    

   // ADCON2

   ADCON2bits.ADFM=1;           // Results format 1= Right justified

   ADCON2bits.ACQT=1;           // Acquition time 7 = 20TAD 2 = 4TAD 1=2TAD

   ADCON2bits.ADCS=2;           // Clock conversion bits 6= FOSC/64 2=FOSC/32

   // ADCON1

   ADCON1bits.PVCFG0 =0;         // Vref+ = AVdd

   ADCON1bits.NVCFG1 =0;         // Vref- = AVss

  //  ADCON0

   ADCON0bits.CHS=2;            // Select ADC channel

   ADCON0bits.ADON=1;           // Turn on ADC 

    

}