Re: About GSM project

haresh wrote:
My Last post many friends have problem abt my university. I join this
group for help. If i said any thing wrong then sorry.
Right I am working project which is using 8051 to connect GSM modem
And GPS receiver .Its for tracking vehicle and send MSG on my or any
mobile about vehicle location.

So If u have any idea Let me know right now i have a problem circuit
design.

Thank You,
Haresh

Haresh,

Your request was just fine. The problem is that many newsgroups are
populated with people who 1) want to make a joke about your request, or
2) want to sound so knowledgeable that you request is just an irritation.

--

From what you have described, you want the the 8051 to manage the data flow
between the GPS and the GSM modem.

There are many variations of the 8051. Some have two serial ports. Using one
of those would save you time. Try the SiLabs 8051F344 development kit which
comes with a prototype board and a debugger + programming tools.

Set up one serial port (baud rate, and format) to talk to the GPS. Setup the
other serial port to drive the GSM modem. Start you programming by working with
the GPS port. Develop code to pull in the GPS messages. Then adjust those
messages into the format needed. Develop code to establish and close a connection
with the GSM modem. Then connect all of the pieces together.

Most of the work will involve setting up the 8051 hardware to host your application.
The newer 8051's are feature rich and need a lot of initialization code to setup the
part for use. Study the data *** extensively and read as many software examples
as you can. No matter how good your application is, if you do not setup the hardware
correctly, you will have problems ranging from erratic behavior to just plain dead.

From an application viewpoint, I would use an interrupt to service each serial port
receive data. Toss the data into a small circular buffer and then to all processing
and messaging in the foreground.

As someone suggested, ww2.8052.com is a good resource. There are quick solutions.
You will have to read a lot. There is much to know to make this type of project
a success.

Good luck and let us know how it goes.

B. Farmer
.