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PIC18F4550 - LCD #fuses problem

 
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carrie_



Joined: 17 May 2008
Posts: 6

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PIC18F4550 - LCD #fuses problem
PostPosted: Sun May 18, 2008 4:09 am     Reply with quote
Hello all Smile

i'm trying to initialize the LCD, just to show maybe "HELLO WORLD" nothing too fancy, but I'm stuck while compiling this code below. Another tab appears which says 18F4550.h. And when i click for more help, it says "Unknown keyword in #fuses"

i am really new in this, and any form of help would be deeply appreciated.

Code:

#include <18F4550.h>
#fuses NOWDT,XT, NOPUT, NOPROTECT
#use delay(clock=48000000)
#include <LCD.c>

void main()
   {
      lcd_init();
     
      while(1)
         {
            printf(lcd_putc,"Hello World");
         }
   }

PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun May 18, 2008 10:30 am     Reply with quote
It compiles with no errors with vs. 4.073.

However, the XT fuse will not run the PIC at 48 MHz. XT is for 4 MHz
operation, typically. This is clearly stated in the oscillator section of
the 18F4550 data sheet.
http://ww1.microchip.com/downloads/en/DeviceDoc/39632D.pdf
carrie_



Joined: 17 May 2008
Posts: 6

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PostPosted: Wed May 21, 2008 7:59 am     Reply with quote
thank you, PCM Programmer! i've uninstalled & reinstalled my CCS and it works now! thanks a bunch for taking your time to help!
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