Техническая Спецификация для Microchip Technology DM163025-1
2012 Microchip Technology Inc.
DS30684A-page 327
PIC18(L)F2X/45K50
EXAMPLE 20-1:
SETUP FOR CTMU CALIBRATION ROUTINES
#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
}