Hi Srinil,
MPLAB and C18 are used to program the PIC, to build a C program that
will read data from a PC serial port you will need to use a C compiler
for the PC.
>From what you are saying I get that you have a GPS on COM2 and you want
to pass some data from it to the PIC connected in COM1. You can program
the PIC to read data from a serial port and then you need to write a
program that will read data from COM2 and output it in COM1 in a format
that the PIC will be able to understand.
I would say that you should divide this in three parts:

- reading data from GPS on COM2.
- outputting data to COM1.
- getting the PIC to read data from COM1.

Then you just need to put it all together and it should work.
Looking at the way you are asking this question it seems to me that you
are just starting and trying to achieve this may just be a bit
difficult, so dividing it into several tasks will let you learn a bit
more and it will not be as frustrating. 

For the serial comms with the PIC look for it in the PICLIST and adapt
the program to your needs. For the PC side try Google.

http://www.piclist.com/techref/microchip/rs232.htm


Hope it helps 
Best regards
		Luis

   



-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of srinil@katuns.org
Sent: 03 July 2007 12:54
To: piclist@mit.edu
Subject: [PIC][EE]reading data from COM1 port of PC by PIC 

Hi,



    How I can read data from my PC COM1 port  using MPLAB and C18(using
C 
programming language)

   1. is it possible to use inline assembly to read COM1 port using
MPLAB,

beacause i couldn't find any library function in MPLAB that used to read

COM1 port of a PC

  2.my virtual gps is conected to COM2(COM1 and COM2 connected using 
virtual serial port kit).




  regards
 srinil kumar
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