GSM/GPS Location detect project

Microcontroller, DSP and FPGA Topics

Re: GSM/GPS Location detect project

Postby Neo » Wed Sep 25, 2013 7:19 pm

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Re: GSM/GPS Location detect project

Postby SemiconductorCat » Thu Sep 26, 2013 2:48 am

As neo told above Dalvik VM does provide good interface to access GPS. Even that is the normally used
method when they do this on RPI like board too. Read his instructions. You could ask code examples on
android section.

>> Phone eke hardware architecture ගෙන අපට හොයාගන්න විදිහක් නැද්ද?

Why not? It's based on ARM9 or ARM5 and based on the ARM7 ISA set.
If you want to dig into this then you should read a good book on ARM Hardware system design.
This is the book that I'm using ,
ARM System
Developer’s Guide
Designing and Optimizing
System Software
Andrew N. Sloss
Dominic Symes

Learning curve is slow and you requires lots of patience, but it really worth learning it. Because ARM hardware
knowledge is specially asking on job advertisements. There is a professional certification on ARM too:
https://www.prometric.com/en-us/clients ... nding.aspx
Unlike SCJP this is really valid , because very few are doing such exam. And no classes/instructor who teaching
this course locally.

But if you need a video series [entry level ] then while reading that book you could go through this lessons too.
First year of ARM learning you don't need to buy any board , but second year you may need to buy something like
RPI. This is their first video in intro ARM video session,

It's all about self learning here.

First year you may need a good computer only with linux installed and you need to download the sources of
Qemu and Gcc and make ARM ports. The course will teach you how to.


In any case you want to read Android source , now we have a cross reference: [in the case you don't need
to download whole source tree].
http://androidxref.com/

If you are a beginner then you may find hard time to reverse engineer phone designed in close mind.
But there are some phones which are designed to hack in mind, They are explicitly designed to be hacked.
Life will be easy with such phone.

>> http://www.xda-developers.com/holiday-g ... e-of-2012/

and also xda forum have good source on RE android phones.
as well as this stack exchange : http://reverseengineering.stackexchange.com/ [used this to ask more general questions
on RE , use xda for asking more specific questions on android phones].


Service manuals and schematics are lots of good sources too: for a example.
Nexus Service manual + schematics : http://depositfiles.com/files/6kq0oh29f [posted orignally on xda forum]

Don't try to find a ARM processor reading schematics, you won't find it unless you will find a OMAP or TI chip
which have ARM processor integrated. Android operaring system and drivers should be ported into that chipset.
That's what android porting guys are doing.

So , many things here up to you, since I could give you a very very very little. I'm too so newbie to this field like you.
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Re: GSM/GPS Location detect project

Postby lasantha0229 » Thu Sep 26, 2013 4:04 pm

අය්යා මට හරියටම GPS එකෙන් ගන්න data GSM හරහා Database  එකට යනකම් path එක ගෙන ටිකක් පැහැදිලිව දැනගන්න ඔනී
ඒකට අපට ඔනි වෙන Hardware part මොනවද?
මට GPS/MUC/GSM Hardware part වල link වෙන වෙනම දෙන්න පුලුවන්ද?
I heard that if I made this using gsm/gps + MCU its more than 25,000 cost. :o
Signal නැති වෙලාවට කොහොමද data යන්නේ?
Android app වලින් measure කරන speed එහෙම Accuracy ද?
GUI interface එකටයි Database එකටයි හොද Open source software මොනවද?
මේ වැඩේ සම්පූර්නයෙන් Open source වලින් කරගන්න පුලුවන්ද මුල ඉදන්ම?
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Re: GSM/GPS Location detect project

Postby Neo » Sun Sep 29, 2013 9:00 am

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Re: GSM/GPS Location detect project

Postby lasantha0229 » Fri Oct 04, 2013 4:52 am

:biggrin:  ඔව් අයියා ඔයා කියන කතාව හරි වැඩේ පටන් ගන්න ඔනී ඉක්මනටම.ඒත් මට ඊට කලින් ගැටලු තියෙන තැන් වගයක් පැහැදිලි කරගෙන යන එක හොදයි  :arrow:

Micro controller with 2 serial ports කියන්නේ මොනවගේ model එකක්ද?
Vehicle එකක් ඇතුලේ වගේ GPS/GSM එක තියෙද්දි antenna එකක් ඔනිද?
GPS එකේ inbuilt memory තියෙනවද?
Can GPS get data form sat without data connection (without signal Does GPS work?)
අපට පැ‍ය 3ක් 4ක් විතර this unit එක වැඩ කරන්ඩ battery කොහොමද ඕනි Can use phone battery?
How we connect SD card to MCU?
Which memory card can we use?
sorry මට අයියා තාම පැහැදිලි උනේ නැහැ අපේ unit එකේ GPRS වලින් යවන data,database එකකට update වෙන්නේ කොහොමද කියලා  :(
AT Command ලියන්නෙත් MCU එකටද? ඒ කොහොමද? :o
Can I use my computer as database server and how? and how i connect my unit with this database?
How i connect remote machine to database server ?
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Re: GSM/GPS Location detect project

Postby Neo » Fri Oct 04, 2013 7:46 am

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Re: GSM/GPS Location detect project

Postby lasantha0229 » Fri Oct 04, 2013 3:31 pm

How i interface phone battery with PIC ?
Can GPS get data form satallite without data connection (without signal Does GPS work?)
How i interface microsd card with PIC (with module or direct solder?)? and can I buy it from lankatronic?
How i interface Phone speaker with PIC ?
මට මේවටත් උදඋ කරන්න අයියා  :) Thankz very much
මට ඔනී Unit එක හුගක් small size එකට හදාගන්න can  i do it using those module?  :(
Why we can't use phone GSM/GPS (Small size) modules for this?
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Re: GSM/GPS Location detect project

Postby Neo » Fri Oct 04, 2013 7:24 pm

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Re: GSM/GPS Location detect project

Postby lasantha0229 » Sat Oct 05, 2013 4:01 pm

thankz ayiya  :biggrin:
අයියා මට ඔය unit එක 4hour වගේ වැඩ කරගන්න හොද small battery  එකක් කියන්න පුලුවන්ද? (without using vehicle power)
what is PCB dual later design ?
මම අද හෙටම බඩු ටික අරගෙන වැඩේට බහිනවා.
Lankatronic එකේ Lakdrunio, out of stock නි  :(
Lakdrunio එකක් use කරලා atmel එකක් ප්‍රොග්ම් කරලා PIC එකක් වගේ USE කරන්න පුලුවන්නි නේද for circuit?
what are the atmel model for this project ?
කොහොමද අපි GPS එකෙන් ගන්න LOCATION DATA map එකකට පෙන්නන විදිහට හදන්නේ?
ඒකට use කරන පුලුවන් internet modem (UNIT SEND GPS DATA THROUGH GPRS TO THIS DISPLAY) තියෙන display model (LCD OR DISPLAY only for show map and location) මොනාද තියෙන්නේ ?
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Re: GSM/GPS Location detect project

Postby SemiconductorCat » Sat Oct 05, 2013 5:44 pm

Lasantha ,
you are describing a 'daughter board' something like this:
http://www.mouser.com/new/microchip/microchipAC32001/

They were used on those cheap sensor networks.
I'm not sure that you would need something like to design your own hardware?
Then a FPGA daughter area is preferred. I think there are sensor arrays with that
daughter area. However I found that above link on the microchip network.
Feel free to ask from their product and sales engineers.
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