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help on LCD Display

 
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Jan 18, 2007 5:02 pm     Reply with quote
I assume you're talking about Mark's LCD driver in the Code Library:
http://www.ccsinfo.com/forum/viewtopic.php?t=20182

I don't have PCM vs. 4.009 to test. The closest I have is vs. 4.014.
I installed that version and compiled the test program shown below.
I programmed it into a 16F877 installed on a PicDem2-Plus board,
with the 4 MHz "can" type external oscillator. It ran OK. I didn't
get any extra characters on the LCD after sending it a "clear screen"
command (\f). I have the original PicDem2-Plus board, not the
latest type, which has a power on/off control connected to pin D7 on
the PIC. Mark's driver (as posted) was for the original PicDem2-Plus.

Try this program. If you still have the problem, it might be caused
by vs. 4.009 of the compiler.
Code:

#include <16F877.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock=4000000)

#include <lcdd.c>

//============================
void main()
{

lcd_init();

while(1)
  {
   lcd_putc('\f');
   delay_ms(500);
   lcd_putc("Hello World\n");
   lcd_putc("This is Line two");
   delay_ms(500);
  }

}
humble pie
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help on LCD Display
PostPosted: Fri Jan 19, 2007 1:31 am     Reply with quote
Thanks PCM programmer, I will try out.
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