Microchip Technology MA180025 データシート

 2010 Microchip Technology Inc.

DS39933D-page 313

#include "p18cxxx.h"

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

/*Setup CTMU *****************************************************************/

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

void setup(void)

{ //CTMUCON - CTMU Control register

    

    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,

    // Set Edge status bits to zero

    

    

    //CTMUICON - CTMU Current Control Register

    CTMUICON = 0x01;

//0.55uA, Nominal - No Adjustment

    

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

//Setup AD converter;

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

    TRISA=0x04;

//set channel 2 as an input

    

    // ADCON2

    ADCON2bits.ADFM=1;

// Resulst 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.ADCAL=0; 

// Normal A/D conversion operation

ADCON1bits.PCFG=0xC; 

// Configures AN0 to AN2 as analog

// ADCON0

ADCON0bits.VCFG0 =0;

// Vref+ = AVdd

ADCON0bits.VCFG1 =0;

// Vref- = AVss

ADCON0bits.CHS=2;

// Select ADC channel

ADCON0bits.ADON=1;

// Turn on ADC 

    

}