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 Post subject: GPRS SIM900 Module
PostPosted: Mon Jul 10, 2017 8:27 am 

Joined: Wed Apr 26, 2017 10:45 am
Posts: 27
Good Morning,

To use the the GPRS SIM900 Module in mySignals HW V1 how to make it work : should i use the code :

bitClear(MySignals.expanderState, EXP_3G_ON);
MySignals.expanderWrite(MySignals.expanderState);

MySignals.initSensorUART();
MySignals.enableSensorUART(EXPANSION);

or
pinMode(onModulePin, OUTPUT);

then this function

void power_on(){

uint8_t answer=0;

// checks if the module is started
answer = sendATcommand("AT", "OK", 2000);
if (answer == 0)
{
// power on pulse
digitalWrite(onModulePin,HIGH);
delay(3000);
digitalWrite(onModulePin,LOW);

// waits for an answer from the module
while(answer == 0){ // Send AT every two seconds and wait for the answer
answer = sendATcommand("AT", "OK", 2000);
}
}

}


Thank you in advance


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Tue Jul 11, 2017 6:28 am 

Joined: Mon Sep 28, 2009 11:06 am
Posts: 10492
Hello Nour_Neifar,

are you trying to use this module:
https://www.cooking-hacks.com/documenta ... l-sim-900/


or this module?:
Image

Regards


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Tue Jul 11, 2017 7:07 am 

Joined: Wed Apr 26, 2017 10:45 am
Posts: 27
Good Morning
I'm using the second module( which is in the photo not in the link)


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Wed Jul 12, 2017 6:31 am 

Joined: Mon Sep 28, 2009 11:06 am
Posts: 10492
Hello Nour_Neifar,

in this case you have to use "Expansion_board_SIM900" in our library examples.

Regards


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Wed Jul 26, 2017 9:21 am 

Joined: Wed Apr 26, 2017 10:45 am
Posts: 27
Good Morning

I'm asking about the type of sim that should be connected to the GPRS SIM900 Module.


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Thu Jul 27, 2017 6:37 am 

Joined: Mon Sep 28, 2009 11:06 am
Posts: 10492
Hello Nour_Neifar,

You should use Standart SIM.
Image

Regards


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Tue Aug 01, 2017 9:30 am 

Joined: Wed Apr 26, 2017 10:45 am
Posts: 27
Good Morning

I used a standard SIM to the module and i connected the module to the shield but the module did not start. The answer is 0 and it Send AT every two seconds and wait for the answer.

How i can fix this problem ?

Thank you in advance


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Wed Aug 02, 2017 6:21 am 

Joined: Mon Sep 28, 2009 11:06 am
Posts: 10492
Hello Nour_Neifar,

could you send us some photos of your hardware? We recommend reading this tutorial:
https://www.cooking-hacks.com/documenta ... l-sim-900/

and this post:
viewtopic.php?f=19&t=5946

First use the module in gateway mode to check the commands.

Regards


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Wed Aug 02, 2017 9:06 am 

Joined: Wed Apr 26, 2017 10:45 am
Posts: 27
Good morning,

Here is some pictures:

https://goo.gl/photos/aat9TcjpSUaZt4s5A

https://goo.gl/photos/t8sWgKeJ58oyjgPn7

https://goo.gl/photos/19CDKrqrEkTv6E5t6

In order to check if i can successfuly communicate with the module over a serial connection, I used a free tool call Putty but it still sending AT .

https://goo.gl/photos/Ew4sfqHrpBB4sFTD6


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 Post subject: Re: GPRS SIM900 Module
PostPosted: Thu Aug 03, 2017 6:31 am 

Joined: Mon Sep 28, 2009 11:06 am
Posts: 10492
Hello Nour_Neifar,

Please contact directly with our technical service:

http://www.libelium.com/contact/#RMA

Regards.


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