kiran_hk wrote:
>
... snip ...
>
>> You may need to learn how to program either in assembly or c and
>> read documentation with understanding.  What skills and
>> experience do you already have?
> 
> Sir, I know programming in C. But I never programmed assembly
> program using C.  I don't have any past experience. Is it quite
> difficult to use the products I mentioned above? Please guide me
> appropriately. I wanted to save the digitized data to a text file
> in the PC.

In my opinion you can't do embedded programming without
understanding assembly coding for at least your object machine.

You have been omitting attribution lines for material you quote. 
Those are the initial lines that say "whozit wrote:", and the
number of attribution marks (+1) identifies the appropriate lines.

-- 
 [mail]: Chuck F (cbfalconer at maineline dot net) 
 [page]: <http://cbfalconer.home.att.net>
            Try the download section.

kiran_hk wrote:
>> kiran_hk wrote:
>>> I have downloaded MPLAB IDE v8.30 and installed it.
>>> I wanted to communicate PIC18F452 and PC
>>> I am using a sensor for my project which gives analog data.I am
> digitizing
>>> using 10 Bit ADC in the PIC. I want save the data from the ADC to a
> file in
>>> the computer. 
>>> Now how should I proceed in the programming the PIC.
>>> Can you help me in this regard?
>>> I am trying to use ICD 2 module in the MPLAB software.
>>> Thank you.
>> Do it with FlashForth. It will impress your teachers.
>>
>> http://flashforth.sf.net
>>
> Can that software help me to receive the data from the ADC module of PIC
> 18f452 to a text file in the computer?
> Kiran.

After you have programmed the FF kernel to the PIC, you can via the
serial port experiment with how the PIC works.

Here is the Forth source code of how to read the AD converter on the 
PIC18F452. The Forth source is compiled into the PIC by typing it in
on the command line, or be sending it from a file.

hex ram
\ Define the PIC registers
ffc4 constant adresh
ffc3 constant adresl
ffc2 constant adcon0
ffc1 constant adcon1
ff80 constant porta
ff92 constant trisa

bin
: adinit ( -- )      \ Init the registers
   00111111 trisa  c!
   11001100 adcon1 c!
   10000001 adcon0 c!
;
hex

: ad@ ( channel -- n )
   3 lshift
   adcon0 c@ c1 and or
   adcon0 c!            \ Select the AD channel
   pause                \ Aquisition delay and possible task switch
   4 adcon0 mset        \ Start conversion
   begin
     4 adcon0 mtst 0=   \ Wait for conversion to complete
   until1
   adresl @             \ Fetch the result
;

For example with the command " 1 ad@ <enter>" you can read the AD 
conversion result for channel 1 !

   decimal <enter>
   adinit <enter>
   1 ad@ <enter>
   . 1023

The converted value 1023 is returned on the parameter stack and printed 
with "." to the serial port.

If you want to read out many samples in a loop you define a new word for 
that.
'results' prints ad conversion values until a key has been pressed.

decimal      \ Use decimal for compilation

: results
   decimal    \ use decimal for output
   adinit     \ Initialise the A/D converter.
   begin
     10 ms    \ 10 ms delay between each sample
     ad@ .    \ Convert and output the ad conversion value
     key?     \ Check for key press
   until
   key drop   \ read and drop the keypress value
;

You can save the values into file from a terminal emulator with the 
capture function. Use for example TeraTerm as terminal emulator.

C is very nice and the 'standard' way of doing things, but with Forth 
you have command line interface with a interpreter and a compiler
directly on the PIC.

IMHO, this makes learning the PIC functionality easier, because you can
read and write the PIC registers from the command line and observe what
happens directly without stopping the processor.

On Apr 1, 6:06=A0pm, "kiran_hk" <kiran.ide...@gmail.com> wrote:
> I have downloaded MPLAB IDE v8.30 and installed it.
> I wanted to communicate PIC18F452 and PC
> I am using a sensor for my project which gives analog data.I am digitizin=
g
> using 10 Bit ADC in the PIC. I want save the data from the ADC to a file =
in
> the computer.
> Now how should I proceed in the programming the PIC.
> Can you help me in this regard?
> I am trying to use ICD 2 module in the MPLAB software.
> Thank you.

So you want to use the Debug system as a One-Off Data logger ?

I don't know about ICD 2 specifically, but usually separate terminal
programs are included for data communication.

The better ones of these can save, and read from files.

The Debug systems task- focus is mainly to 'show you the registers',
not to stream user ADC data.

So, see what virtual terminal support microchip offer, but usually it
involves
writing code to send your data to the serial port, and then
(hopefully) your HW has a path already wired from that serial port,
back to the PC.
-jg

On Wed, 01 Apr 2009 23:32:47 -0500, "kiran_hk"
<kiran.ideal1@gmail.com> wrote:

>>On Wed, 01 Apr 2009 01:06:59 -0500, "kiran_hk"
>><kiran.ideal1@gmail.com> wrote:
>>
>>>I have downloaded MPLAB IDE v8.30 and installed it.
>>>I wanted to communicate PIC18F452 and PC
>>>I am using a sensor for my project which gives analog data.I am
>digitizing
>>>using 10 Bit ADC in the PIC. I want save the data from the ADC to a file
>in
>>>the computer. 
>>>Now how should I proceed in the programming the PIC.
>>>Can you help me in this regard?
>>>I am trying to use ICD 2 module in the MPLAB software.
>>>Thank you.
>>
>>You may need to learn how to program either in assembly or c and read
>>documentation with understanding.  What skills and experience do you
>>already have?
>>
>>Jon
>>
>Sir, I know programming in C. But I never programmed assembly program
>using C.

Which already tells me you either have a lot to learn about embedded
programming (far too much for guidance) or have limited ability to use
English to communicate accurately.

>I don't have any past experience.

That's a problem.  You need to start where you are at and move forward
and you may need to admit that the task ahead of you needs to be set
aside until you gain more appreciation of the details involved.

>Is it quite difficult to use the products I mentioned above?

I know MPLAB and the PIC18F family to some degree.  I don't consider
them difficult.

But all of the details that surround taking samples and getting them
loaded into a PC, while not necessarily difficult for someone with the
experience... may be quite difficult for you, lacking experience.

>Please guide me appropriately. I wanted to save
>the digitized data to a text file in the PC.

Frankly, the tools you have, ICD 2 and MPLAB, are themselves fairly
easy to use.  It's possible that's your only problem -- learning to
use them.  But there are PDF files available for that and they are
reasonably okay, if you simply read forward and follow instructions. I
don't know what hardware bit you are using, except for the processor.
But that really doesn't sound like your only problem.

If I had to set a path for you, it would be to start out getting a
program running that can turn an LED on and off, slowly.  Eventually
getting to the point where you could blink an LED in such a way that
doesn't appear to blink at all but instead appears to change in
brightness, up and down, once say every 5 seconds.  If you can get
that much done, you are ready to start next into learning to use an
ADC and store data somewhere.

It's possible that there is already a canned program to do what you
want.  I don't know what hardware blob you have and even if so, I'm
still unaware of the program you might use without knowing how to
program much.

You need to take some small steps, right now.  Get some success there,
first.  Forget the project for a moment.  What's the immediate problem
in front of you?  Do you know how to write any c code at all, get it
downloaded to your target board, run the debugger on it, and trace
through some results with understanding?

Jon

>kiran_hk wrote:
>> I have downloaded MPLAB IDE v8.30 and installed it.
>> I wanted to communicate PIC18F452 and PC
>> I am using a sensor for my project which gives analog data.I am
digitizing
>> using 10 Bit ADC in the PIC. I want save the data from the ADC to a
file in
>> the computer. 
>> Now how should I proceed in the programming the PIC.
>> Can you help me in this regard?
>> I am trying to use ICD 2 module in the MPLAB software.
>> Thank you.
>
>Do it with FlashForth. It will impress your teachers.
>
>http://flashforth.sf.net
>
Can that software help me to receive the data from the ADC module of PIC
18f452 to a text file in the computer?
Kiran.

>On Wed, 01 Apr 2009 01:06:59 -0500, "kiran_hk"
><kiran.ideal1@gmail.com> wrote:
>
>>I have downloaded MPLAB IDE v8.30 and installed it.
>>I wanted to communicate PIC18F452 and PC
>>I am using a sensor for my project which gives analog data.I am
digitizing
>>using 10 Bit ADC in the PIC. I want save the data from the ADC to a file
in
>>the computer. 
>>Now how should I proceed in the programming the PIC.
>>Can you help me in this regard?
>>I am trying to use ICD 2 module in the MPLAB software.
>>Thank you.
>
>You may need to learn how to program either in assembly or c and read
>documentation with understanding.  What skills and experience do you
>already have?
>
>Jon
>
Sir, I know programming in C. But I never programmed assembly program
using C.
I don't have any past experience. Is it quite difficult to use the
products I mentioned above? Please guide me appropriately. I wanted to save
the digitized data to a text file in the PC.
-Kiran

kiran_hk wrote:
> I have downloaded MPLAB IDE v8.30 and installed it.
> I wanted to communicate PIC18F452 and PC
> I am using a sensor for my project which gives analog data.I am digitizing
> using 10 Bit ADC in the PIC. I want save the data from the ADC to a file in
> the computer. 
> Now how should I proceed in the programming the PIC.

How do you want to save the analog data ??
What is your hardware design ??
Are you in a programming class or a hardware class ??

First thing to learn: Write the specifications for your project.

Your future boss will like that.

don

kiran_hk wrote:
> I have downloaded MPLAB IDE v8.30 and installed it.
> I wanted to communicate PIC18F452 and PC
> I am using a sensor for my project which gives analog data.I am digitizing
> using 10 Bit ADC in the PIC. I want save the data from the ADC to a file in
> the computer. 
> Now how should I proceed in the programming the PIC.
> Can you help me in this regard?
> I am trying to use ICD 2 module in the MPLAB software.
> Thank you.

Do it with FlashForth. It will impress your teachers.

http://flashforth.sf.net

On Wed, 01 Apr 2009 01:06:59 -0500, "kiran_hk"
<kiran.ideal1@gmail.com> wrote:

>I have downloaded MPLAB IDE v8.30 and installed it.
>I wanted to communicate PIC18F452 and PC
>I am using a sensor for my project which gives analog data.I am digitizing
>using 10 Bit ADC in the PIC. I want save the data from the ADC to a file in
>the computer. 
>Now how should I proceed in the programming the PIC.
>Can you help me in this regard?
>I am trying to use ICD 2 module in the MPLAB software.
>Thank you.

You may need to learn how to program either in assembly or c and read
documentation with understanding.  What skills and experience do you
already have?

Jon