IMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to devices with cellular capability. This identifier is used primarily for distinguishing each device when it connects to a mobile network.

Before attempting to read the IMEI, ensure that the device has successfully registered on the GSM network. This can be verified by checking that the SENSOR_GSM_REGISTERED status is set to true. Once the device is registered, the IMEI can be read using the read_buf(IMEI, ...) function.

1. IMEI Read Example Code

#include <io>
#include <read>
#include <float>
#include <string>
#include <core>
#include <write>
#include <define>
#include <socket>
#include <debug>

#define RS232_SPEED                     115200
#define WORD_LENGTH                     WORDLENGTH_8
#define STOP_BITS                       STOPBITS_1
#define PARITY                          PARITY_NONE

forward wait_for_modem();

new str_temp[16];

main()
{
    Init(RS232, RS232_SPEED, WORD_LENGTH, STOP_BITS, PARITY);
    debug_init(RS232);
    wait_for_modem();
    read_buf(IMEI, 15, str_temp);
    debug_print("IMEI: ");
    debug_print(str_temp);
    for(;;)
    {
        Delay(10000);
    }
}

wait_for_modem()
{
    while (get_val(SENSOR_GSM_REGISTERED) == false)
    {
        Delay(1000);
        debug_print("Waiting for Modem...\r\n");
    }
}