GSM Based Electronic Notice Board

I am making Major Project of GSM based Electronic Notice Board using GSM SIM300, AT89C51 and LCD..

So I need help in the coding..


I have made the Hardware part, I am only left with Coding Part..

Can anyone help me out with it.??

It is urgent..

For simpler details, I am using 8051 Microcontroller that is AT89C51, with 16X2 LCD attached to it at P0 with:

RS pin connected to P2^5
RW pin connected to P2^7
EN pin connected to P2^6..

GSM SIM300 is connected to RS232 via DB-9 Connector which is further connected to Microcontroller with its 10 and 11th pins..

I want to send message from Mobile and that message should be displayed on the LCD via GSM SIM300..

For this hardware part, I want code, I know the code for how to print string on LCD but I have no idea of AT commands and other Serial Programming, So I need help with this part..

Can someone please help me with this Coding Part, I will be very thankful to you..

It is urgent, as I have to submit my Project within this week...

Waiting for a reply from a helpful person...

@ waterineyes
firstly you has to go with serial communication
go to tutorial section
http://www.8051projects.net/serial-communication/
for gsm
http://www.8051projects.net/t41321/embedded-gsm-development/gsm-modem-8051.htm

Some how I manage to get this:

Can you check it for me if it is right or wrong, I am getting an error and Hex file is not generating:

Build target 'Target 1'
compiling e-Notice.c...
C51 FATAL-ERROR -
ACTION: GOBAL OPTIMIZATION
FUNCTION: Rxmsg
ERROR: CANNOT OPTIMIZE FUNCTION
COMPILATION TERMINATED.
use the following work-around:
#pragma OPTIMIZE (7)
/* your original function */
Rxmsg () {
....
}
/* end of your original function */
#pragma OPTIMIZE (8)
Target not created..



My Full Code is attached below:

This is my full code...

Please help at the earliest..

I think you are using a very big buffer
>> unsigned char p[90];

which controller are you using?

I am using AT89C51, 8051 simply...

@Ajay Bhargav, I need the working code urgently as I have to submit it in another two days..

Hi Waterineyes(nice name)

Have u seen the link given by mojaka,
There you can find the working code.

Try that
If some thing is not clear contact us back.
We are happy to help U.