http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb This work is licensed under a Creative Commons Attribution-Noncommercial 2.5 India License.Rickey's World Disclaimer Ajay Bhargav - contact@nospam.com contact@nospam.com Mon, 01 Dec 2008 11:49:16 -0800 Mon, 01 Dec 2008 11:49:16 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php http://www.8051projects.net/forum-t8063.html
Thanks for taking intereset in my issue.

I did one project with GSM modem interfacing with 8051 microcontroller. I successfully completed send and receive information through SMS. But the issue is the time lag. SMS is not that fast so I thought of switching form GSM to GPRS connectivity.

Now issue is i don't have good knowledge of TCP/IP and don't know how to send string to GPRS modem & how to receive and interprit the GPRS string..

Can anyone help me to come out of the issue...., please advise me for some good reading material for GPRS communication, TCP/IP etc (if at all required for this project )

Thanks you all in advance.

Have good day.

Divyang]]> Thu, 03 Apr 2008 06:33:29 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html Ajay<contact@nospam.com> Thu, 03 Apr 2008 09:08:44 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
My modem is wavecom which supports GPRS also. I am not very sure of the model number as its assembled by a local vender in Mumbai, India. Document given with the modem shows that it supports GPRS too. My sms application working fine on it.

Again thanks for your time and efforts.

Divyang]]> Divyang<kapdivyang@nospam.com> Fri, 04 Apr 2008 01:32:10 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html I will tell shyam to assist you in this matter. He has been working on GPRS modems. He is little busy with his work so couldnt come online.
Please wait till he come and help you out.]]> Ajay<contact@nospam.com> Fri, 04 Apr 2008 11:18:59 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html ask your supplier for openAt developer suit..
it is really very easy to send data via GPRS using wavecom and OpenAt.
which company do u work for???

]]> shyam<shyam@nospam.com> Fri, 04 Apr 2008 20:21:00 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
At present I am working for TCS.
My exact issue is that I don't want point to point connection because if more then one remot unit tries to contact to a master unit then they have to be in queue. Instead if they connect to a common interetnet site then I guess no queue required to log online data. "Many data packets can come from many sources at a time and no queue required" this is what I believe, why I want to switch to GPRS.

The question is "Whether my belief is true or not?", "Am I going on correct way for my requirement?"
]]> Divyang<kapdivyang@nospam.com> Tue, 08 Apr 2008 05:18:42 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
ok which module are u using i mean q24plus/q2686 ????

if u are using the OPEN-AT development suit then u can use the WIP functionality ..

once u start reading that document you can procceed ahead!!


]]> shyam<shyam@nospam.com> Tue, 08 Apr 2008 06:12:09 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
he is the most appropriate guy to answer ur querries!!!

you can also consider visiting the Wavecom development forum managed by the wavecom people themselves!!
]]> shyam<shyam@nospam.com> Tue, 08 Apr 2008 07:04:01 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
At present I don't know which module or model of wavecom will be used in the project. I am preparing project plan for the same. If you have any suggestion then please convey..

]]> Divyang<kapdivyang@nospam.com> Thu, 10 Apr 2008 01:46:55 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
if you want to make it cost effective plus u need less control pins go for q24plus... (can be developed on a 2 sided PCB).. it has in built ARM7 proccessor.
else if u want more controll pins and a better proccessor ARM-9 go for q2686
remember u'll need a 4 -layered pcb plus a lot more money...

u people neednot abt money i guess ]]> shyam<shyam@nospam.com> Thu, 10 Apr 2008 02:38:50 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
One more thing to ask... It's about bulk sms facility, If I want to send a same query to all remote unit, at present I am sending one by one sms to all intended mobile numbers ( and it takes hell lot of time!!! ). But I know that some modem has bulk sms facility, my understanding about bulk sms is sending same sms to multiple units more efficiently.. (i.e with lower microcontroller over head and taking less time to send them all...) is it true?... Is it advisable to use that facility??

Thanks.



]]> Divyang<kapdivyang@nospam.com> Sun, 13 Apr 2008 18:08:31 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
yes most of us trying to make SMS server kinda devices are facing this problem.....

if u r going for bulk SMS in that case (q24Plus) modules will be in a state of wait!!!

but in OPenAT u might be running a lot of other timers!! so may be sometimes the bulk sms gets canceled...

better create different threads for different recepients and then rum them concurrently...

the above statement also keeps in consideration that u are firing AT commands rather than the OpenAT apis.
if using OpenAT Apis there will not be much of a problem cause u have a tiny OS (firmware) to back on!!
]]> shyam<shyam@nospam.com> Sun, 13 Apr 2008 20:23:38 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
This time I get confused.. not getting you properly.. Your one statement -"OPenAT u might be running a lot of other timers!! so may be sometimes the bulk sms gets canceled" - reveals that OPenAT is not reliable and the last statement of your post contradict it by saying - "if using OpenAT Apis there will not be much of a problem"… Hope you understand my problem…should I go for OPenAT or firing AT commands by separate application without using OPenAT..

]]> Divyang<kapdivyang@nospam.com> Mon, 14 Apr 2008 14:48:29 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
sorru for confusing you .. didnt mean it ]]> shyam<shyam@nospam.com> Tue, 15 Apr 2008 00:13:38 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html ]]> Divyang<kapdivyang@nospam.com> Tue, 15 Apr 2008 18:36:44 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html
u have Infosys at ur phonecall what else u want???

]]> shyam<shyam@nospam.com> Tue, 15 Apr 2008 19:11:02 -0700 http://www.8051projects.net/forum-t8063.html http://www.8051projects.net/forum-t8063.html i am extremely sorry I could not reply forum. Dear divyang Please paste the response of few command given here. so I will be able to help you out in resolving your problems
ATi3
AT+WOPEN?
AT+WOPEN=2
these are most imporatnt command for me to understand the issue.]]> Shailesh NAYAK<nayaktel@nospam.com> Mon, 28 Apr 2008 16:14:04 -0700 http://www.8051projects.net/forum-t8063.html