12F683 boostc configuration help

RobertTrue · Aug 11, 2009

Hi I'm new to pic programming but not new to C programming,
Can someone help me configure a 12F683 in boostC I just want to be able to use the gpio register to blink leds on the 5 output pins. I have read most of the datasheet and the newcomers sticky and I still cant figure it out.

Here is the code so far.

Code:

#include <system.h>
#include <PIC12F683.h>

#pragma DATA _CONFIG, _WDT_OFF & _INTOSCIO
#pragma CLOCK_FREQ 4000000

char count = 00000000b;
char GPP0 = 00000001b;
char GPP1 = 00000010b;
char GPP2 = 00000100b;
char GPP4 = 00010000b;
char GPP5 = 00100000b;


void main()
{

 osccon      = 01100001b; 

 cmcon0      = 7;    //set digital IO 
 
 adcon0      = 0 ;
 
 ansel       = 00000000b;
 
 wpu         = 0;
 
 trisio      = 00001000b;    //set input , output
 gpio        = 00000000b;
 
 
 
 
while(1)
{
    
 
    set_bit(gpio,GPP0);
    set_bit(gpio,GPP1);
    set_bit(gpio,GPP2);
    set_bit(gpio,GPP4);
    set_bit(gpio,GPP5);
    
    delay_ms(1000);
    
    clear_bit(gpio,GPP0);
    clear_bit(gpio,GPP1);
    clear_bit(gpio,GPP2);
    clear_bit(gpio,GPP4);
    clear_bit(gpio,GPP5);
    
    delay_ms(1000);
   
}



}

RobertTrue · Aug 11, 2009

when I run this program all of the pins blink except 2 and 7 (GP5,GP0)

RobertTrue · Aug 11, 2009

Any ideas as to what I'm doing wrong?
Can someone post the configuration that they would use?
Its doesn't have to be in C

kpatz · Aug 11, 2009

Try changing:

Code:

char GPP0 = 00000001b;
char GPP1 = 00000010b;
char GPP2 = 00000100b;
char GPP4 = 00010000b;
char GPP5 = 00100000b;

to

Code:

char GPP0 = 0;
char GPP1 = 1;
char GPP2 = 2;
char GPP4 = 4;
char GPP5 = 5;

The set_bit and clear_bit functions (bsf and bcf in assembly) take the bit number (0-7) as a parameter, not a bit mask.

You could also set all the GPIO bits for your LEDs with a single command: gpio = 00110111b;
and clear them with gpio = 0;

RobertTrue · Aug 11, 2009

kpatz said:
Try changing:

Code:

char GPP0 = 00000001b; char GPP1 = 00000010b; char GPP2 = 00000100b; char GPP4 = 00010000b; char GPP5 = 00100000b;

to

Code:

char GPP0 = 0; char GPP1 = 1; char GPP2 = 2; char GPP4 = 4; char GPP5 = 5;

The set_bit and clear_bit functions (bsf and bcf in assembly) take the bit number (0-7) as a parameter, not a bit mask.

You could also set all the GPIO bits for your LEDs with a single command: gpio = 00110111b;
and clear them with gpio = 0;

That was the problem it works now TYVM.

12F683 boostc configuration help

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