DVice8
- 6th August 2012, 10:37
Hi, since a couple of days I am trying to get the built-in CPS Module to work on the PIC16LF1947 with the AN6 (=RF1) pin but without any succes. I don't think the CPS module is even oscillating while if the appropriate registers CPSCON0 and CPSCON1 are set it should start up. Also looking at the Timer1, that uses the CPS oscillator as source, it doesn't count anything. I really don't know what I am doing wrong. It all seems to be so straight forward but it isn't at all.
#include <htc.h>#include <pic.h>
#include <stdio.h>
__CONFIG( WDTE_OFF //Wacthdog Timer Disable
& FOSC_INTOSC
& MCLRE_ON
& FCMEN_OFF //Fail-Safe Clock Monitor enable bit enabled
& LVP_OFF //Low Voltage Programing On
& CP_OFF //Table Read-Protect
& CLKOUTEN_ON); //Clock out enable bit
#define _XTAL_FREQ 8000000
void capInit(void);
void interrupt isr(void);
int reading;
int average = 0;
void main(void){
OSCCON = 0b01110010; // 4xPLL off, 4MHz, internal clock
ANSELA = 0; // Digitaal
TRISA = 0; // Ouput
LATA = 0; // Low signal
LATF = 0; // Low signal
ANSELF = 1; // Analoog
TRISF = 1; // Input
RA1 = 0; // Red
RA2 = 0; // Green
RA3 = 0; // Bleu
capInit();
while(1){}
}
void capInit(void){
CPSCON0 = 0b10001101; // Cap sense ON, internal osc, High Range
CPSCON1 = 0b00000110; // channel 6
OPTION_REG = 0b11101000; // T0CS: Transition on RA4/T0CKI
// Prescaler assigned to WDT
TMR0IF = 0;
TMR0IE = 1;
T1CON = 0b01000001;
TMR1IF = 0;
TMR1IE = 1;
T1GCON = 0b11110001;
TMR1GIF = 0;
TMR1GIE = 1;
GIE = 1;
}
void interrupt isr(void){
if (TMR0IE && TMR0IF) // Overflow interrupt
TMR0IF = 0; // Clear T0IF every time
if (TMR1GIF && TMR1GIE){ // Gate interrupt
TMR1GIF = 0;
TMR0 = 0;
reading = TMR1L + (unsigned int)(TMR1H << 8);
if (reading < average - (average >> 4))
RA1 = 1;
else if (reading > average - (average >> 3)){
RA2 = 1;
average = average - (unsigned int)(average >> 4);
average = average + (unsigned int)(reading >> 4);
}
TMR1L = 0x00; // Reset Timer1
TMR1H = 0x00; // " "
TMR1ON = 1; // Restart Timer1
TMR0 = 0xFE;
T1GGO = 1;
}
}
#include <htc.h>#include <pic.h>
#include <stdio.h>
__CONFIG( WDTE_OFF //Wacthdog Timer Disable
& FOSC_INTOSC
& MCLRE_ON
& FCMEN_OFF //Fail-Safe Clock Monitor enable bit enabled
& LVP_OFF //Low Voltage Programing On
& CP_OFF //Table Read-Protect
& CLKOUTEN_ON); //Clock out enable bit
#define _XTAL_FREQ 8000000
void capInit(void);
void interrupt isr(void);
int reading;
int average = 0;
void main(void){
OSCCON = 0b01110010; // 4xPLL off, 4MHz, internal clock
ANSELA = 0; // Digitaal
TRISA = 0; // Ouput
LATA = 0; // Low signal
LATF = 0; // Low signal
ANSELF = 1; // Analoog
TRISF = 1; // Input
RA1 = 0; // Red
RA2 = 0; // Green
RA3 = 0; // Bleu
capInit();
while(1){}
}
void capInit(void){
CPSCON0 = 0b10001101; // Cap sense ON, internal osc, High Range
CPSCON1 = 0b00000110; // channel 6
OPTION_REG = 0b11101000; // T0CS: Transition on RA4/T0CKI
// Prescaler assigned to WDT
TMR0IF = 0;
TMR0IE = 1;
T1CON = 0b01000001;
TMR1IF = 0;
TMR1IE = 1;
T1GCON = 0b11110001;
TMR1GIF = 0;
TMR1GIE = 1;
GIE = 1;
}
void interrupt isr(void){
if (TMR0IE && TMR0IF) // Overflow interrupt
TMR0IF = 0; // Clear T0IF every time
if (TMR1GIF && TMR1GIE){ // Gate interrupt
TMR1GIF = 0;
TMR0 = 0;
reading = TMR1L + (unsigned int)(TMR1H << 8);
if (reading < average - (average >> 4))
RA1 = 1;
else if (reading > average - (average >> 3)){
RA2 = 1;
average = average - (unsigned int)(average >> 4);
average = average + (unsigned int)(reading >> 4);
}
TMR1L = 0x00; // Reset Timer1
TMR1H = 0x00; // " "
TMR1ON = 1; // Restart Timer1
TMR0 = 0xFE;
T1GGO = 1;
}
}