| View previous topic :: View next topic |
| Author |
Message |
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
| PIC184520 need tutorials and sample code please |
 Posted: Wed Feb 04, 2009 9:22 pm |
 |
|
Hi, I'm new to microcontrollers and well all I have been able to do is compile
a printf("hello world");
however, it being connected to a ICD 2 in MPLAB using the CCS Compiler I don't know where the printf is printing out to or if it's not.
When I compile and debug my code it's compiles, builds, and runs just fine, but nothing is output at all.
I'm completely new PIC programming but I'm familiar with C as I am a .Net developer and have been working in C++ and C# for 2 years.
I have been through this forum, Microchips forum, microchips samples, and have done an extensive search on google that has lasted for 2 days
and I have yet to get this board to light up and LED.
I don't know what functions to call, I don't know what jumpers should be here or there, and there's no good step-by-step tutorial on PICDEM2 Plus board using CCS C compiler getting this board up and running.
I'm frustrated beyond belief, but I have yet to give up.
Someone please help me tonight
I'll be on AIM I'm on now, and I will continue to search
I have also search on CCS forum, and archive but only got a political debate on the PIC184520 only having shipped x amount of chips.
Please help me I'm frustrated beyond belief, and I just need help get a jump start on what to call in my main.c file, where the classes, functions are that i can call using the CCS C compiler and then I'm sure I can do the rest.
Thanks in advance. |
|
 |
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Wed Feb 04, 2009 9:39 pm |
|
|
Which version of the PicDem2-Plus board do you have ?
Does it look exactly like this one ?
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010072
Or does it look like this one ?
http://www.microchipdirect.com/ProductSearch.aspx?Keywords=DM163022
Note the differences in the "prototype area" on the right side of the
boards, below the LCD. That's a quick way to tell which one you have.
Do you have the PCH compiler from CCS ? The following program should
blink the LED on pin B0. Jumper J6 must be installed for this to work.
The PicDem2-Plus board (both versions) has an external "can" oscillator
instead of a crystal. That's why EC_IO fuse is used instead of the XT fuse.
| Code: |
#include <18F4520.H>
#fuses EC_IO,NOWDT,PUT,BROWNOUT,NOLVP
#use delay(clock=4000000)
//========================
void main()
{
while(1)
{
output_high(PIN_B0);
delay_ms(500);
output_low(PIN_B0);
delay_ms(500);
}
} |
|
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
| Posted: Wed Feb 04, 2009 9:53 pm |
|
|
Thanks, I'll try it out.
I have the board that is featured in your second link.
Thanks for the reply.
Is there a way I can talk to you on AIM ? coden4fun aim or csfinch@live.com on MSN
Thanks for the quick reply so quickly.
I'm just a little confused on how to start, and hopefully once I start and get some good tutorial, article or book I can reference then I can just go to town.
again thanks for your reply. kudos!!! |
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
| Posted: Wed Feb 04, 2009 9:57 pm |
|
|
| PCM programmer wrote: | Which version of the PicDem2-Plus board do you have ?
Does it look exactly like this one ?
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010072
Or does it look like this one ?
http://www.microchipdirect.com/ProductSearch.aspx?Keywords=DM163022
Note the differences in the "prototype area" on the right side of the
boards, below the LCD. That's a quick way to tell which one you have.
Do you have the PCH compiler from CCS ? The following program should
blink the LED on pin B0. Jumper J6 must be installed for this to work.
The PicDem2-Plus board (both versions) has an external "can" oscillator
instead of a crystal. That's why EC_IO fuse is used instead of the XT fuse.
| Code: |
#include <18F4520.H>
#fuses EC_IO,NOWDT,PUT,BROWNOUT,NOLVP
#use delay(clock=4000000)
//========================
void main()
{
while(1)
{
output_high(PIN_B0);
delay_ms(500);
output_low(PIN_B0);
delay_ms(500);
}
} |
|
I have received the following error
*** Error 111 "main.c" Line 2(7,71): Unknown keyword in #FUSES "NOLVP"
*** Error 128 "main.c" Line 5(2,6): A #DEVICE required before this line
3 Errors, 0 Warnings.
Halting build on first failure as requested.
BUILD FAILED: Wed Feb 04 22:44:29 2009 |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Wed Feb 04, 2009 10:09 pm |
|
|
It works for me. It compiles OK with PCH vs. 4.085:
| Quote: | Executing: "C:\Program Files\PICC\Ccsc.exe" "PCH_Test.c" +FH +DF +LY -T -A +M -Z +Y=9 +EA -EW
Memory usage: ROM=0% RAM=0% - 0%
0 Errors, 0 Warnings.
Loaded C:\Program Files\PICC\Projects\PCH_Test\PCH_Test.cof.
BUILD SUCCEEDED: Wed Feb 04 19:54:37 2009 |
What's your compiler version ? It's a number in this format: x.xxx
If you have a modern version of the CCS compiler (last three years or
so) then CCS has a tutorial on how to setup the compiler with MPLAB,
complete with screenshots:
http://www.ccsinfo.com/faq.php?page=ccs_mplab
You can download the MPLAB "plug-in" from this page:
http://www.ccsinfo.com/downloads.php |
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
| Posted: Wed Feb 04, 2009 10:14 pm |
|
|
I don't think that's the problem, for I have the latest version 4.086 PCH PCM PCD
and the latest MPLAB IDE all in pro trial version
could it be 18f452.h instead of 18f4520.h ? |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Wed Feb 04, 2009 10:22 pm |
|
|
Can you post a link to the web page that has the specs for this "pro trial
version" ?
Also, the web page here shows only vs. 4.085. It's possible there is a
4.086, but I'd like to see a link to it.
http://www.ccsinfo.com/devices.php?page=versioninfo |
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
| Posted: Wed Feb 04, 2009 10:34 pm |
|
|
so which one do I download and install and which one do I remove then?
I mean can I program my board I have with a trial version of the CCS C compiler somewhere? |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Wed Feb 04, 2009 10:41 pm |
|
|
You have got to have some version of the CCS compiler that supports
your PIC.
Do you have a link to some other version than the demo ?
If so, post it. It will probably say which PICs it supports. |
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
| Posted: Wed Feb 04, 2009 10:47 pm |
|
|
which PIC should it support?
PIC18 right? |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Wed Feb 04, 2009 10:53 pm |
|
|
You said you have a PicDem2-Plus board. Look at the IC's that you
got with that board (read the part numbers on the top of the ICs)
and post which PICs you have. |
|
|
coden4fun
Joined: 04 Feb 2009
Posts: 9
|
|
| Posted: Wed Feb 04, 2009 10:56 pm |
|
|
| PCM programmer wrote: | You said you have a PicDem2-Plus board. Look at the IC's that you
got with that board (read the part numbers on the top of the ICs)
and post which PICs you have. |
IC's I'm new to all of this. I really don't know what to look for at all. A company gave this to me to mess around with, and they were going to set it up at the company, but they didn't have time to do some debugging, so they didn't set it up.
All I know is I have
PICDEM 2 Plus Demo Board 2006 the chip has 4520LCDr1.HEX
The only thing I have is that board, lan RJ45, power cable and an ICD 2 debugger |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Wed Feb 04, 2009 11:14 pm |
|
|
OK. It's apparent that you have an 18F4520 PIC, which has a label on it.
The label refers to the program that is pre-programmed into that PIC by
the Microchip factory. But the CCS demo doesn't support that PIC.
If you want to use the CCS demo, I suggest that you buy one of the
PICs on the list that the demo supports. For example, you could buy
the 18F458 in the 40-pin DIP package. Here is the website:
http://www.mouser.com
Mouser Part #: 579-PIC18F458-I/P
Manufacturer Part #: PIC18F458-I/P
The cost is about $8 (USD) plus shipping.
Remember, the CCS demo is only good for one month. Then it shuts off.
Or, you could buy the command-line PCH compiler, and integrate it
with MPLAB (a free download from the Microchip website). It's $200 USD.
http://www.ccsinfo.com/content.php?page=Purchasing1
Or, maybe there's some other deal available somewhere. |
|
|
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
