Calling a phone number on boot up - Electron

Troubleshooting
1

HI,

I have been searching high and low but not having much luck. I have check the Doc’s and examples but still not working. Maybe its not possible. I dont even have a sample code to show because I’m not even close.

I am using a Particle with a relay attached and using SMS to turn the relay on and off. All is working well.

What I want to do now is have a “alert phone number” (the users phone number) stored in EEPROM so that several units can run the same software.

The particle when powered up sends a SMS to the alert number to sat it has booted up. (currently working with a phone number defined in the code)

I want to be able to send a SMS to change the alert number in the EEPROM effectively setting up the device so so i can hand it over to another person with out the need to re-flash the device and hard code their number in.

Any help would be appreciated.

I am not running a coin cell battery and therefore the SRAM is not an option at the moment.

2

So your now using a 3rd part SIM to receive and send SMS messages successfully.

Now you just want to write code to store a new phone number in EEPROM when received via SMS message?

3

Kind of. I want to be able to change the phone number of the alert number via sms and have it stored in the EEPROM

4

You’re already able to receive SMS messages right?

If so you just need to store that incoming SMS data into EEPROM.

Have you tried to do that yet?

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5

What is your prime issue - receiving SMS or storing the number in EEPROM?

For the former there are several threads available and I’ve done it, so it is possible
https://community.particle.io/search?q=receive%20sms

For the latter, the EEPROM docs should be comprehensive.

1 Like
6

Yes. Sending and receiving sms I’m all over.
I’ve looked at the put and get but can’t work it out.
Currently the code has a

String alertNumber = “+614xxxxxxxx”

at the start.

in setup it send a sms

sendSMS(“This device has been Powered Up”, alertNumber);

I want to call the alertNumber from EEPROM.

I also want to be able to change that phone number in the EEPROM by say sending a sms changenumber,614xxxxxxxx

7

Setup

int addr = 10;
uint16_t value1;
EEPROM.get(addr, value);
if(value == 0xFFFF) {
  // EEPROM was empty -> initialize value1
  value1 = +614xxxxxxxx;
string alertNumber = value1 
}

sendSMS("This device has been Powered Up", alertNumber);

in the loop I have this code;

if (smsProvided_Command == "newnumber")
  {
    if (smsProvided_Command_Option.length() != 12)
    {
      sendSMS("Error: Alert number must be 12 digits and in this format: +614xxxxxxxx", phoneReturn);
      return 0;
    }
    if (smsProvided_Command_Option.startsWith("+61"))
    {
      sendSMS("Mobile alert number changed to: " + smsProvided_Command_Option, alertNumber);

      // **_(STORE ALERTNUMBER IN EEPROM HERE)_** //
      int addr = 10;
      uint16_t value1 = + smsProvided_Command_Option;
      EEPROM.put(addr, value1);

      sendSMS("Mobile number changed to: " + smsProvided_Command_Option, phoneReturn);
      return 1;

    }
    else
    {
      sendSMS("Error: Mobile number must start with  +614 --only Australian numbers are supported. e.g. 0488.. becomes +61488..", phoneReturn);
      return 0;
    }
    return 0;
  }
8

String objects are not well supported with EEPROM.put() and EEPROM.get() since a String object doesn’t actually hold the string inside the object but only a pointer to the heap location.
So I’d suggest using a character array (char alertNumber[32]) to hold your string. This should work without issue.

BTW, you also can’t use uint16_t to store a telephone number unless you have very short ones :wink:

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