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  Topic: Using PLL of PIC18F4550
Abdulla M.A.

Replies: 6
Views: 13194

PostForum: General CCS C Discussion   Posted: Fri Jan 14, 2011 3:09 am   Subject: Using PLL of PIC18F4550
That's meaning the max. frequency for PWM I can getting from 4550 with
crystal of 48MHZ is 12MHZ, is there any PIC can giving me more
frequencies???
thankx

Abdulla
  Topic: Using PLL of PIC18F4550
Abdulla M.A.

Replies: 6
Views: 13194

PostForum: General CCS C Discussion   Posted: Tue Jan 11, 2011 9:11 am   Subject: Using PLL of PIC18F4550
Hi guys,
I would like to get a square wave of 40MHZ frequency from portb, pin0.
is this a correct program?? BTW, H4 option did not work with me.

#include <18f4550.h>
#use delay (clock= ...
  Topic: Getting char from computer and type it on GLCD (problem)
Abdulla M.A.

Replies: 5
Views: 5273

PostForum: General CCS C Discussion   Posted: Fri Oct 22, 2010 7:43 am   Subject: Getting char from computer and type it on GLCD (problem)
Correct this.
text[1] = '\0'; // null terminate my single char making it a string
now, the program work fine.

if I just want to get the xt and yt from computer, I assumed I should
add the follo ...
  Topic: Getting char from computer and type it on GLCD (problem)
Abdulla M.A.

Replies: 5
Views: 5273

PostForum: General CCS C Discussion   Posted: Fri Oct 22, 2010 5:22 am   Subject: Getting char from computer and type it on GLCD (problem)
I get the input as a string, I stored it in text array, nothing changed!!
gets(text);
glcd_text57(xt,yt,text[i],1,on);

I think glcd_text57 deal with char. because "Hello" message appea ...
  Topic: Getting char from computer and type it on GLCD (problem)
Abdulla M.A.

Replies: 5
Views: 5273

PostForum: General CCS C Discussion   Posted: Fri Oct 22, 2010 12:29 am   Subject: Getting char from computer and type it on GLCD (problem)
Hi guys,
when I execute the program and start typing letters, nothing appear
on the GLCD, why???

#include <16f877a.h>
#use delay(clock=4000000)
#include <HDM64GS12.c>
#incl ...
  Topic: Problem with PWM
Abdulla M.A.

Replies: 4
Views: 5458

PostForum: General CCS C Discussion   Posted: Thu Sep 23, 2010 1:28 pm   Subject: Problem with PWM
Thank you alot John for your help.

Abdulla
  Topic: Problem with PWM
Abdulla M.A.

Replies: 4
Views: 5458

PostForum: General CCS C Discussion   Posted: Mon Sep 20, 2010 4:51 am   Subject: Problem with PWM
Yes, it became low after I made the duty cycle=0, and remove L_L
from the setup_ccp1(ccp_pwm1_l_l); but it's not pure low, it's about 0.7v. Thank you.

Can you tell me, why setup_pwm1(ccp_off); did ...
  Topic: Problem with PWM
Abdulla M.A.

Replies: 4
Views: 5458

PostForum: General CCS C Discussion   Posted: Sun Sep 19, 2010 9:50 am   Subject: Problem with PWM
Hi guys,
If would like to remove the marks in the signal below, so what I have to
do???

http://i232.photobucket.com/albums/ee137/eced2008/untitled.jpg

my code:

#include <18f4550.h>
# ...
  Topic: HELP: Verify FAILED at data address 000h
Abdulla M.A.

Replies: 4
Views: 6783

PostForum: General CCS C Discussion   Posted: Sun Aug 08, 2010 1:01 pm   Subject: HELP: Verify FAILED at data address 000h
http://sites.google.com/site/abdulla877/file-cabinet

File name:Winpicpgm

Abdulla
  Topic: HELP: Verify FAILED at data address 000h
Abdulla M.A.

Replies: 4
Views: 6783

PostForum: General CCS C Discussion   Posted: Sun Aug 08, 2010 1:13 am   Subject: HELP: Verify FAILED at data address 000h
Use PICprog with JDM programmer, ICprog will not work with it.

Abdulla
  Topic: library glcd 128x64 KS0108
Abdulla M.A.

Replies: 1
Views: 5890

PostForum: General CCS C Discussion   Posted: Thu Jul 29, 2010 5:33 am   Subject: library glcd 128x64 KS0108
You have to use graphics.c with HDM64GS12.c, i.e.

#include <HDM64GS12.c>
#include <graphics.c >

Abdulla
  Topic: Remote garage door opener
Abdulla M.A.

Replies: 6
Views: 13203

PostForum: General CCS C Discussion   Posted: Sat Jul 17, 2010 11:59 am   Subject: Remote garage door opener
Check the circuit connection in the link below.

http://sites.google.com/site/abdulla877/about/pic-tutorials/auto-power-off-circuit

Abdulla
  Topic: Remote garage door opener
Abdulla M.A.

Replies: 6
Views: 13203

PostForum: General CCS C Discussion   Posted: Sat Jul 17, 2010 4:21 am   Subject: Remote garage door opener
Notes:
1- your circuit will not work, because you did not connect pull-up
resistors to the keypad.

2- the 5v should connect to Mclr across 10k resistor

3- you need a current limiting resist ...
  Topic: pic16f877 and LCD (black squares )
Abdulla M.A.

Replies: 11
Views: 12641

PostForum: General CCS C Discussion   Posted: Sat Jul 17, 2010 4:16 am   Subject: pic16f877 and LCD (black squares )
1- May be the problem was in the initialization of the LCD, there was no
enough time after set/clear "E" or "RS" to initialize the LCD.

2- Give an delay time after ---> lcd_ ...
  Topic: rand() function not working?
Abdulla M.A.

Replies: 3
Views: 3573

PostForum: General CCS C Discussion   Posted: Thu Jul 08, 2010 10:23 am   Subject: rand() function not working?
Did you set the value of "seed" and initialized the random number
generator "srand"???

Abdulla
 
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