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hello sir/madam, This forum is very good. last time also i had used this.Got very nice information.:)
Now i want to interface GSM module with 8051. 1)can i do it without using hyper terminal? (i guess it can be done by using serial port of 8051. am i right?
2) i don't know the basics of how gsm module is interfaced with micro-controller. so i haven't purchased any modem. so i don't have datasheets or manuals. i was referring some datasheets which i got from internet but i din't get much after reading those. I have decided to clear my basics first and then i will purchase it. is it ok? any idea where will i get this info?
3) please tell me where will i get this?
4) actually in my project i want to make a system which will send a message to a particular number when pre-decided speed limit is crossed. so i will have to mount that module on vehicle directly along with micro-controller.
5) also i am not getting from where i should start to interface GSM module to microcontroller.. (i.e. i know the destination but don't know how to reach there :o)
Get a GSM module with a serial port.
Get a GSM module that has _good_ documentation available.
Either get a GSM module with same logic levels for the serial port as your processor uses - or insert a logic-level shifter between module and processor.
Keep an eye on what supply voltages the GSM module requieres. Life can be easier if you have a module that can use the same supply voltage as the processor. Or that uses one of the more common voltages, like 3.3V.
Consider if the GSM module can be bought with a development board - most modules uses a very fine-pitch connector that you may have troubles buying. And troubles soldering. You can even find sites specializing in hobbyists, that sells small kits with the module mounted on some form of breakout board - can be cheaper than buying an SDK from the module manufacturer.
Read the documentation for the module, to figure out what AT commands to use to get the expected result.
Code, test, debug, repeat.
Unless you extract speed information from the vehicle using CAN or your own speed sensor on a wheel, you would have to look into adding a GPS to the design too. Note that there exists modems that also contains a GPS - but prioritize documentation and how to physically connect and mount the module before prioritizing a module with internal GPS. As a hobbyist, the manufacturers and distributors will not break their backs to get you support with datasheets etc...
thank you for nice information...:)
You can even find sites specializing in hobbyists, that sells small kits with the module mounted on some form of breakout board
can you please tell me such sites which are better suit me? you are experienced in this field..:)
ever heard of Google and Wikipedia...?
other Search Engines are available...
www.8052.com/.../160143
You probably also need to study the so-called "bible" for the 8051 architecture: www.8052.com/.../187976
And:
http://www.8052.com/tutorial
http://www.keil.com/books/
yes yes... but i asked here because you people are more experienced than me..
ohk thank you... i'll see those websites and will get back to you....:)
You need to do your own basic study.
If you then have specific questions, people will help - but won't do your basic study for you.
If you want the job done for you - at a fee - see: http://www.keil.com/condb
yes sir:) i'm posting here to clear my basic concepts only:) n i know u all surly help me to clear my doubts:) thank you for that:)