Iot sdk thesis



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EIT Thesis IoT SDK by Hrudaynath

Annex 
CoAP 
Method Codes 
 
Response Codes 


78 
Class Details 
 
 


79 
NB-IoT 
Source Code for NB-IoT using BC66 
void
modem_init(); 
void
sendData(
char
sensor, 
int
val); 
#define MODEM Serial1
uint8_t ATflag=
0

int
i=
0

char
ATCheck[
50
]; 
void
setup()

Serial.begin(
9600
); 
MODEM.begin(
9600
); 
delay(
2000
); 
Serial.write(
"\r\nPress RESET Button on Modem"
); 
delay(
5000
); 
Serial.write(
"\r\nInitializing Modem"
); 
modem_init(); 
Serial.write(
"\r\nModem Initialized"
); 
delay(
2000
); 

void
loop()
{
if
(Serial.available())
{
// If anything comes in Serial (USB),
MODEM.write(Serial.read());
// read it and send it out MODEM (pins 0 & 
1)

if
(MODEM.available())
{
// If anything comes in MODEM (pins 0 & 1)
Serial.write(MODEM.read());
// read it and send it out Serial (USB)


void
modem_init() 

/*AT Command*/
Serial.write(
"\r\nAT Polling"
); 


80 
while
(ATflag==
0


delay(
1000
); 
MODEM.println(
"AT"
); 
MODEM.flush();
delay(
2000
); 
while
(MODEM.available()>
0


char
printChar = MODEM.read(); 
Serial.write(printChar); 
if
(printChar == 
'+'


ATflag=
1

}
}

Serial.write(
"\r\nAT Polling Finished"
); 
ATflag = 
0

/*-------------------------------------AT Command finished------------------
--------------------*/
/*------------------Setting-up the PDN Context------------------------------*/
Serial.write(
"\r\nSetting-up the PDN Context"
); 
while
(ATflag==
0


delay(
1000
); 
MODEM.println(
"AT+QGACT=1,1,\"u.iot.mt.gr.hu\""
); 
MODEM.flush();
delay(
4000
); 
while
(MODEM.available()>
0


char
printChar = MODEM.read(); 
Serial.write(printChar); 
if
(printChar == 
'K'


ATflag = 
1




ATflag = 
0

/*------------END Setting-up the PDN Context------------------------------*/
/*------------------Setting-up the REST API ------------------------------*/


81 
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"
); 
MODEM.flush();
delay(
4000
); 
while
(MODEM.available()>
0


char
printChar = MODEM.read(); 
Serial.write(printChar); 
if
(printChar == 
'K'


ATflag = 
1




ATflag = 
0

/*---------------END Setting-up the REST API ------------------------------*/
/*----------------------Disabling Sleep Mode ------------------------------*/
Serial.write(
"\r\nDisabling Sleep Mode\r\n"
); 
while
(ATflag==
0


delay(
1000
); 
MODEM.println(
"AT+QSCLK=0"
); 
MODEM.flush();
delay(
4000
); 
while
(MODEM.available()>
0


char
printChar = MODEM.read(); 
Serial.write(printChar); 
if
(printChar == 
'K'


ATflag = 
1




ATflag = 
0

/*----------------END Disabling Sleep Mode ------------------------------*/
Serial.write(
"\r\nSending the first data\r\n"
); 


82 
while
(ATflag==
0


delay(
1000
); 
MODEM.println(
"AT+QISEND=0,18,Client Initialized"
); 
MODEM.flush();
delay(
4000
); 
while
(MODEM.available()>
0


char
printChar = MODEM.read(); 
Serial.write(printChar); 
if
(printChar == 
'K'


ATflag = 
1




ATflag = 
0



Document Outline

  • Summary
  • 1 Introduction
    • 1.1 What is Internet-of-Things?
    • 1.2 Internet of Things: Projected Growth
    • 1.3 Internet of Things: Device Management
    • 1.4 The Problem
    • 1.5 Objectives of Thesis
      • 1.5.1 In-depth study and presentation of the OMA LWM2M standard
      • 1.5.2 Study and analysis of IPSO object model, CoAP
      • 1.5.3 Study, analysis and implementation of NB-IoT based communication
      • 1.5.4 Integration of IPSO, LWM2M, CoAP, DTLS, AT Commands Driver into a protocol stack
      • 1.5.5 Automated code generation (E.g. XML to C/C++)
      • 1.5.6 Implementation of automatic software deployment on SoC
      • 1.5.7 Implement end-to-end testing with a LWM2M server
    • 1.6 Summary: The Complete Architecture of the System
  • 2 Literature Review
    • 2.1 Low-power Wide-area Networks
    • 2.2 Narrow-Band IoT (NB-IoT)
      • 2.2.1 Overview
      • 2.2.2 NB-IoT Deployment
        • In-Band Deployment
        • Guard-band Deployment
        • Standalone Deployment
      • 2.2.3 NB-IoT Applications
      • 2.2.4 Role of NB-IoT in the Thesis
    • 2.3 IPSO Smart Objects
      • 2.3.1 Representation of the IPSO Object
      • 2.3.2 IPSO Object: Example of Temperature Sensor
      • 2.3.3 Composite Objects
      • 2.3.4 Role of IPSO in the Thesis
    • 2.4 Constrained Application Protocol (CoAP)
      • 2.4.1 Messaging Model of CoAP
      • 2.4.2 CoAP Message Format
      • 2.4.3 Security in CoAP
      • 2.4.4 CoAP v/s HTTP
    • 2.5 Datagram Transport Layer Security (DTLS)
      • 2.5.1 Transport Layer Security (TLS)
      • 2.5.2 DTLS Overview
      • 2.5.3 Epoch
      • 2.5.4 Sequence Number
      • 2.5.5 DTLS Handshake [24]
        • Stateless cookie exchange for DoS attack prevention
        • Handshake message fragmentation and re-assembly
      • 2.5.6 Timeout and Retransmission
      • 2.5.7 DTLS: Role in Thesis
    • 2.6 Light-weight Machine-to-Machine Protocol (LWM2M)
      • 2.6.1 Architecture and Protocol Stack
      • 2.6.2 Interfaces
        • Bootstrap
        • Device Discovery and Registration
        • Device Management and Service Enablement
        • Information Reporting
      • 2.6.3 LWM2M: Role in Thesis
  • 3 Implementation, Testing and Results
    • 3.1 NB-IoT based Communication
      • 3.1.1 NB-IoT implementation without on-board Modem (Arduino Mega + BC66)
        • Implementation
        • Results
      • 3.1.2 NB-IoT implementation with on-board Modem (SODAQ SARA)
        • Implementation
        • Results
    • 3.2 Automated Code Generation
    • 3.3 Stack integration: adding the DTLS support
      • 3.3.1 Role of UNIX libraries in Eclipse tinydtls and their Resolution
      • 3.3.2 Session API (tinydtls/session.c, tinydtls/session.h)
      • 3.3.3 DTLS Connections API (dtlsconnection.c, dtlsconnection.h)
      • 3.3.4 Integration to Wakaama and other changes
      • 3.3.5 Results
    • 3.4 End-to-end Testing
  • 4 Conclusion
  • 5 Future Work
  • Acknowledgements
  • References
  • Annex

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