Comments

• 

  Bernt Christian Egeland February 9, 2013 at 10:12am

  Hi

  Im manually run these AT commands:

  AT+CGATT?   //attached to GPRS ?
  AT+IPR=57600
  AT+IFC=2,2   //"it's better to use hardware flow control"
  AT+CIPMODE=1  //Enable transparent mode
  AT+CSTT="internet.public"  //set APN
  AT+CIICR   //open GPRS
  AT+CIFSR      // Get local IP address
  AT+CIPSERVER=1,1234//Start the TCP server, listening port:1234

   

  Be sure your APN is correct. i had to use internet.public for my purpose.

  I also get external IP from my cell vendor wich meens im not behind any firewall  :)

  After i write all AT commands i swop the TX RX connections from my computer to the APM2.5 UART0 ( See pic bellow in Red section)

  I then start my MP and choose TCP. 

   

  My GCS is my computer with regular broadband internet and Mission Planner.

   

  Im trying to write the Adrucopter software for auto startup and hopefully im able to set the parameters( IP, Serial, Port) from my Mission Planner without changing my code.

   

  Im using :

  APM 2.5 with orginal 2.9.1 software.

  SIM900

  Mission Planner

   

  Ludvig

   

   
• 

  Bernt Christian Egeland February 9, 2013 at 5:05am

  Hi

  Finally i got this working with TCP protocoll. ;) ;)

  The latency is under 500ms, ;) im impressed how great this work.

  I will try UDP later and compare the transfer speed.

  My next step will be to implement the AT commands into the Arducopter 2.9.1 software for auto configuration of sim900 modul.

  Any suggestions for how and where to put the code?

  Ludvig
• 

  Bernt Christian Egeland February 4, 2013 at 11:20pm

  Hi Gents..

  Im newbie in this section so please be gentle to me...  ;)

  Have been testing the SIM900 for a while with AT commands on Adruino Mega board and works perfect.

  So i decided to test this SIM900 on my Arducopter.

  I have an APM 2,5 and SIM 900. I have connected SIM900 TX RX to the UART0 pins. (see picture RED )

  

   

  I downloaded andreas-apm2-wip code and installed to the board.

   

  From this point i need some help. ;)

  Can someone please clearify some questions for me.

  - The andreas-apm2-wip code is based on 2.6 version. If i want to use latest software e.g 2,9 , how to accomplish that?

  - If i want to use home internet and not USB dongle GSM for my mission planner, how to set up the mission planner? I can only set COM port and speed???

  - I cant find any place in the code to change the MDM parameters.? where?

  MDM_IP1 192.000000  - First byte of IP address
  MDM_IP2 168.000000 - Second byte of IP address
  MDM_IP3 0.000000
  MDM_IP4 161.000000 - Fourth byte...

   

  Thx in advice.

   

  Ludvig

   
• ockhams barber February 4, 2013 at 9:56pm

  Hi Toby,

  Yes I agree support has gone to the dogs since they moved it off-shore. Ah well that's modern business. %$##@#E it.
• 

  Toby Mills February 4, 2013 at 11:37am

  Sounds like TPG will be no good for you then. I bet they do have a public APN, just a case of finding someone who can give you the info.
• ockhams barber February 3, 2013 at 8:37pm

  Hi Toby,

  No the apn is simply TPG and according to the company that is the only apn they have.
• 

  Rick Eis February 3, 2013 at 9:50am

  Harrison,

  Well, the various rules and laws I think are a topic for another thread.

  I just would like to see a step by step plan on doing something that someone did that was a success. Then others like myself can start experimenting. :)

  Right now I don't even know what can be done realistically or how to do it, much less what rule or law I'm breaking .... make sense?   

  Rick
• 

  Rick Eis February 3, 2013 at 9:15am

  Yes, Harrison that looks really cool....  

  I just don't want to start buying things till I see what other folks are doing.

  If someone could post a step by step process they have done successfully, we may discover this would be the best way to go. Or maybe someone else has already tried that and has a better way.
• 

  Rick Eis February 3, 2013 at 9:04am

  Is there someone who could write up a little "how to" to get started in this - 

  If someone has something up and running - could they post a guideline for a newbie to get started experimenting.

  Thanks,

  Rick
• 

  Toby Mills February 3, 2013 at 7:18am

  Greg ,ry....
  
  Internet
  Yesinternet
  Or
  Connect
  
  As your apn settings