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Message |
falonsos
Joined: 01 May 2010
Posts: 5
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| 16F877A LCD at 20 MHz |
 Posted: Sat May 01, 2010 6:09 pm |
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Hello.
I have been working very hard trying to make a 16x2 LCD work. But I just couldn't make it...
I hope somebody can help me with this. The code I'm using is:
| Code: |
#include <16F877A.h>
#use delay(clock=20000000)
#FUSES NOWDT //No Watch Dog Timer
#FUSES RC //Resistor/Capacitor Osc with CLKOUT
#FUSES NOPUT //No Power Up Timer
#FUSES NOPROTECT //Code not protected from reading
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD //No EE protection
#FUSES NOWRT //Program memory not write protected
#FUSES HS
#include <lcd.c>
void main()
{
lcd_init();
printf(lcd_putc,"/fhello world");//lcd_putc("hello");
while(TRUE)
{
}
}
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Thanks a lot!! |
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Humberto
Joined: 08 Sep 2003
Posts: 1215
Location: Buenos Aires, La Reina del Plata
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| Posted: Sat May 01, 2010 6:55 pm |
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| Quote: |
#FUSES RC //Resistor/Capacitor Osc with CLKOUT
#FUSES HS
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You have a redundant pre-processor directive, the compiler always validate the last option:
HS in this case, wich assume that you have a crystal in the oscillator module.
Regards,
Humberto |
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falonsos
Joined: 01 May 2010
Posts: 5
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| Posted: Sat May 01, 2010 7:03 pm |
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Thanks! I will delete that line right away!
But, I'm using a crystal in the oscillator module of 20 MHz. So I don't think that's the problem. |
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bkamen
Joined: 07 Jan 2004
Posts: 1614
Location: Central Illinois, USA
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| Posted: Sat May 01, 2010 8:55 pm |
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Did you write the driver for the LCD yourself or are you using something included with CCS PIC-C?
Most of the time, the common mistakes are:
PIN Assignments
Timing Issues
PORT settings (TRIS)
I see you're include LCD.C, but no where have you defined where the LCD is hooked up (what port, pins, etc)
-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D |
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