This fixes the pins not being initialized before using them.

[madmaze]

Currently as far as I can tell GSM_RESET is not in use, but if we define it, we might as well initialize it.

This fixes issue mentioned here: https://code.google.com/p/gsm-shield-arduino/issues/detail?id=97

[salvatiobueno]

Hi Madmaze!

I have a doubt... With this library how I get a phone number from contact agenda of the SIM card? Is possible? I saw some files but I didn't found nothing...

Thanks so much and sorry for my english! Salva.

[madmaze]

Hi Salva,

What do you mean by contact agenda? Do you mean the contact name associated with a number? At the moment only retrieving of the number is possible, see SIM900.cpp line 776. Using the AT+CPBR command, you should be able to extend those functions to allow you to retrieve the text associated with a phonebook entry. SIM900 datasheet page 69. I have not tried this, but file an issue here and it'll get put on the enhancements list.

Thanks,

Matthias

[salvatiobueno]

Sorry Madmaze,

I need to number to the contact, not the their name. What is the function to get it?

Thank you so much! Salva.

[madmaze]

Hi Salva,

Have a look at the function I mentioned in my previous response. It allows you to retrieve a phone number based on it's position on the simcard. Currently only the retrieval of a phone number at a know position is implemented. Find a position of an entry on the simcard given a name has not yet been implemented. See the "AT+CPBF" section on page page 67 of the datasheet for more info. If you want this feature, file an issue and I will add it to the queue of enhancements.

Thanks, Matthias

[salvatiobueno]

Ahh ok!! I look it!! Thank you so much again! :-)

[salvatiobueno]

Hi Madmaze!!

I have a doubt... It's possible to power ON the GSM Shield trought Arduino code without press the POWER ON in the Shield? I'm looking this: https://github.com/MarcoMartines/GSM-GPRS-GPS-Shield/blob/GSMSHIELD/GSM.h It uses the PIN 8 to ON and PIN 9 to RESET... It works right?

Thank you so much!!

[madmaze]

Hi Salva,

Yes you should be able to, make sure you have the newest version of the code. I recently fixed an issue here: https://github.com/MarcoMartines/GSM-GPRS-GPS-Shield/commit/787e16826bf4447d29081a4abfb0dbc946f6eadd Also what kind of board do you have? you will likely have to adjust the GSM_ON pin.

Cheers, Matthias

[salvatiobueno]

Hi Matthias!

Thank you! I use the Arduino UNO board and GSM Shield Icomsat SIM900... How I can turn on the gsm shield? Sending a high output to the GSM_ON pin?

thanks for everything Matthias!

[madmaze]

Hi Salva,

As long as you have the right GSM_ON pin set, it should turn on by itself. If it does not, you can do it manually by setting the GSM_ON pin to HIGH for 1200ms-1500ms then LOW again.

Thanks, Matthias

[salvatiobueno]

Ok, thank you Matthias, I tried it! I need to turn on (from Arduino) the gsm shield to avoid having to press button ON in the GSM shield...

[madmaze]

Thats interesting, so with the board you have(icomsat sim900) the library does not manage to automatically power it on correct? What pin did you set GSM_ON to? Are you sure you are running the latest version of the code Release 3.07.2?

[MarcoMartines]

Unfortunately this library has been developed with the OpenElectronics/FuturaElettronica shield not for icomsat. However on the forum (www.gsmlib.org/forum) there are different users with your board. Maybe you can find some help there.

[salvatiobueno]

Sorry Matthias,

I didn't latest version of library... I just update, and tried it tomorrow! I will tell you!

PD: Marco, I using this library with my GSM Shield IcomSat and not have problems... Thanks!

Salva.

[MarcoMartines]

I mean the PowerOn problem.

[salvatiobueno]

Hi guys!

I use the latest version of library and I plug in power to Arduino, the LED power of GSM Shield turn ON, but... I need to press GSM Reset button on the shield to get NET status... I just want only plug in power to Arduino and everything starts without press any button in gsm shield... :-(

I start thinking that's impossible...

Moreover...

I tried to get IMEI using function in the library without success, this is the code:

void sendSMSlog(void){ char *text2 = " TEL: "; // Si devuelve el Nº IMEI y el nº de tel SIM OK, envía SMS de LOG if (1 == gsm.getIMEI(IMEI) && 1 == gsm.GetPhoneNumber(1, teluser)){ strcpy (SMStext, "ALARM ON! IMEI: "); strcat (SMStext, IMEI); strcat (SMStext, text2); strcat (SMStext, teluser); sms.SendSMS(telcentral, SMStext); Serial.println("\nSMS log sent OK"); } }

Can you help me? I'm doing something incorrect?

THANKS for everything guys!

[madmaze]

As a workaround for the power-on problem, You can set the GSM_ON pin of the library to something you are not using. like 80 or 100 or something. Then do this:

int pwrPin = 8; // set this to whatever is the correct pin for you.
pinMode(pwrPin, OUTPUT); 
void togglePower() {
    digitalWrite(pwrPin, HIGH);
    delay(1200);
    digitalWrite(pwrPin, LOW);
    delay(3000);  // This is relatively arbitrary, just some interval to give it time to power on and connect.
}

If with the above code, you still have to hit reset, then you can also toggle the reset pin in the same fashion. As for the SMS-snippet, I don't know why that doesn't work. I will look into it this evening.

Cheers,

Matthias

[salvatiobueno]

Thank you Matt,

I try to set GSM_RESET and turn on high pulse, I suspect that's the problem... I also will look in this evening... And will tell you!

Relative to SMS-snippet, basically the problem is with getIMEI(IMEI) function... I tried to remove it and the function works well and sending SMS... :-(

Thank you for everything Matt! PD: I owe a beer!