Iot sdk thesis

Table 3.1.1.1 AT Commands NB-IoT with BC66 module 
The code snippet of the C function to send the AT commands in Table 3.1.1.1 is 
displayed below. The complete source code for the NB-IoT communication implementation 
project has been added in annex.

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38 
void
modem_init()
{ 
Serial.write(
"\r\nAT Polling"
);
while
(ATflag==
0
)
{ 
delay(
1000
);
MODEM.println(
"AT"
); 
//Sending "AT" to modem, to check if it is alive
/*Character comparison logic; if(observed modem response == expected response) 
ATflag = 1; (removed for compact display of code)*/
Serial.write(
"\r\nAT Polling Finished"
);
ATflag = 
0
;
Serial.write(
"\r\nSetting-up the PDN Context"
);
while
(ATflag==
0
)
{ 
delay(
1000
);
MODEM.println(
"AT+QGACT=1,1,\"u.iot.mt.gr.hu\""
); 
//Sent to Modem
/*Character comparison logic; ATflag = 1; (removed for compact display of 
code)*/
} 
Serial.write(
"\r\nSetting-up the REST API\r\n"
);
while
(ATflag==
0
)
{ 
delay(
1000
);
MODEM.println(
"AT+QIOPEN=1,0,\"UDP\",\"165.227.145.200\",41243,0,1"
);
/*Character comparison logic; ATflag = 1; (removed for compact display of 
code)*/
} 
Serial.write(
"\r\nDisabling Sleep Mode\r\n"
);
while
(ATflag==
0
) {
delay(
1000
);
MODEM.println(
"AT+QSCLK=0"
);
//Sent to Modem
/*Character comparison logic; ATflag = 1; (removed for compact display 
of code)*/
} 
Serial.write(
"\r\nSending the first data\r\n"
);
while
(ATflag==
0
)
{ 
delay(
1000
);
MODEM.println(
"AT+QISEND=0,18,Client Initialized"
);
//Sent to Modem
/*Character comparison logic; ATflag = 1; (removed for compact display 
of code)*/
} 
} 

---

39 
Results 
On successful compilation and uploading of the code, the following is observed on 
Serial monitor: (NOTE: BC66 has to be RESET manually before it can be initialized with AT 
commands)