PIC18F23K22-ESLASHML datasheet(321/496 Pages) MICROCHIP

321 / 496 page

 2010 Microchip Technology Inc.

Preliminary

DS41412C-page 321

PIC18(L)F2X/4XK22

EXAMPLE 19-1:

SETUP FOR CTMU CALIBRATION ROUTINES

#include "p18cxxx.h"

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

/*Setup 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

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

//Setup 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

}

PIC18F23K22-E/ML Datasheet(PDF) 321 Page - Microchip Technology

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