Error when building program in hitech - c

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slaamdunk@gmail.com

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what does the following error mean. I am using pic - 12f615

Error [192] C:\Program Files (x86)\Microchip\tx_37pricing.c; 31.1 undefined identifier "IOSCFS"
 

Venkadesh_M said:
just OR with Its value as 0x80..
Click to expand...

HI,
I am still getting the error. This is my code

Code C - [expand]
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#include    <htc.h>
 
#ifndef _XTAL_FREQ
#define _XTAL_FREQ 8000000
#endif
 
__CONFIG(FOSC_INTOSC & WDTE_OFF & PWRTE_OFF & MCLRE_OFF & CP_OFF & BOREN_OFF & CLKOUTEN_OFF & IESO_OFF & FCMEN_OFF);
__CONFIG(WRT_OFF & STVREN_OFF & BORV_LO & LVP_OFF);
 
 
 
int wave(unsigned int x)
{
int y;
y=x;
while(x>0){
GPIObits.GP1=1;
__delay_ms(100);
GPIObits.GP1=0;
__delay_ms(100);
x--;
 
}
}
 
void main (){
 
IOSCFS=0x80;            // set clock to 16MHz
//CCP1CON = 0x00;        // disable CCP1
GPIObits.GP1 = 0x00;
GPIObits.GP1 = 0;
 
while(1){
wave(96);
__delay_ms(10000);
}
}
 
Last edited by a moderator:

You don't set configuration words like that (and it can only do 4MHz or 8MHz). It is set by the __CONFIG as you already have. I am not sure of the syntax - for the XC8 it would be #pragma config IOSCFS = 8MHZ. You should be able to find it from your compiler help.

Keith
 

I am sorry the comment is a typo, I am trying to set the internal oscillator at 8 MHz. So should I set my internal oscillator frequency in the __CONFIG statement ?
 

Correct. Unfortunately I don't know the syntax of the __CONFIG, just the #pragma form.

Keith
 

How do I configure the CONFIG register in 12F615 ?
Can I use __Config or do I have to define all the pins of CONFIG ?
 
Last edited:

you can't change clock frequency in runtime by putting IOSCFS=0x80; It will also one of the bits of config reg..
 

change the configuration settings to :-

__CONFIG(IOSCFS_8MHZ & FOSC_INTOSCIO & BOREN_OFF & CP_OFF & MCLRE_OFF & WDTE_OFF & PWRTE_OFF);

and disable this line :-
// IOSCFS=0x80;
 

mithun mohan said:
change the configuration settings to :-

__CONFIG(IOSCFS_8MHZ & FOSC_INTOSCIO & BOREN_OFF & CP_OFF & MCLRE_OFF & WDTE_OFF & PWRTE_OFF);

and disable this line :-
// IOSCFS=0x80;
Click to expand...


Hi,
Thanks for the reply. I tried the following code to see clock output waveform in a CRO, but I am not able to.
How do I enable CLKOUT high ? Is it by default set high also I am getting a MCLRE and INT OSC contention error.
Can you please guide me here, have been tryin to get this for a while
Thank you



Code: 
#include    <htc.h>
//#include <PIC12F615.h>
#ifndef _XTAL_FREQ
#define _XTAL_FREQ 8000000
#endif


__CONFIG(IOSCFS_8MHZ & MCLRE_OFF & WDTE_OFF & PWRTE_OFF & CP_OFF & BOREN_OFF & FOSC_INTOSCIO);



void main (){
ANSEL=0x00;
PORTA=0;
//GPIO=0;
TRISIO4 = 0;
//CCP1CON = 0x00;        // disable CCP1
//GP2 = 0;
//GPIObits.GP1 = 0;
//while(1){
//GP2=1;
//__delay_ms(10);
//GP2=0;
//__delay_ms(10);
while(1);

}
 

Hi slaamdunk,

That is why because you have had entrusted the CLOCK OUT pin to act as digital IO through configuration setting FOSC_INTOSCIO

Alter the FOSC_INTOSCIO setting to FOSC_INTOSCCLK..

you will get FOSC/4 = 2 MHz on the clock out pin

check the output and get me back

good wishes..
 
Last edited:


FOSC_INTOSCCLK - did work and I was able to see the 2MHz clock output.
Thank you
 

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