CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support

PIC18F46K22 issues?

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
thefloyd



Joined: 02 Sep 2009
Posts: 46

View user's profile Send private message

PIC18F46K22 issues?
PostPosted: Wed Sep 12, 2012 6:26 pm     Reply with quote

For the life of me I can't seem to get my PIC18F46K22s to work. I've tried a couple.

simple example:

#include <18f46k22test.h>


void main()
{
setup_oscillator(OSC_4MHZ|OSC_INTRC);

//Example blinking LED program
while(true)
{
output_low(LED);
delay_ms(DELAY);
output_high(LED);
delay_ms(DELAY);
}

}

.h file:
#include <18F46K22.h>
#device adc=10

#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES INTRC //Internal RC Osc
#FUSES NOIESO //Internal External Switch Over mode disabled
#FUSES NOBROWNOUT //No brownout reset
#FUSES WDT_NOSLEEP //Watch Dog Timer, disabled during SLEEP
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)

#use delay(int=4000000)

#define LED PIN_A0
#define DELAY 1000


I've fiddled with everything from 64mhz down to 4mhz, changing the setup_oscillator() and #use delay lines as appropriate. Something is clearly happening, because I get as far as executing output_low (if I swap the order and set output_high first I get that far as well). As soon as I hit the delay, it's off to la-la land. I'm guessing the pic is oscillating at something like 32khz or something like that, whereas the delays are all timed for Xmhz.

why? Am I insane?
asmboy



Joined: 20 Nov 2007
Posts: 2128
Location: albany ny

View user's profile Send private message AIM Address

PostPosted: Wed Sep 12, 2012 6:47 pm     Reply with quote

1- learn to use the 'code' icon

2- here is a devel/ test setup that works for me
Code:

#include <18f46k22.h>
#Fuses INTRC_IO,NOPLLEN,PRIMARY_ON,NOFCMEN,NOIESO,PUT, 
#Fuses  BROWNOUT,BORV29,NOWDT,                                                             
#Fuses CCP2C1,NOPBADEN,CCP3B5,                       
#Fuses NOHFOFST,TIMER3B5,NOMCLR,               
#Fuses NOSTVREN,NOLVP,NOXINST,NODEBUG                     
#Fuses NOPROTECT,NOCPB,NOCPD,NOWRT,NOWRTC
#Fuses NOWRTB,NOWRTD,NOEBTR,NOEBTRB                             


#use delay( clock=8000000,INTERNAL ) // clock changed to 80000
#use rs232(baud=57600, xmit=PIN_C6, rcv=PIN_C7, ERRORS )
thefloyd



Joined: 02 Sep 2009
Posts: 46

View user's profile Send private message

PostPosted: Wed Sep 12, 2012 7:05 pm     Reply with quote

Thanks, that definitely works. I'm able to blink an LED at 8mhz using that setup.

I'll fiddle with the fuses and delay to see if I can get the PLL working and the higher clock speeds.
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group